diff options
| author | krolyxon <me@krolyxon.com> | 2026-06-08 23:12:15 +0530 |
|---|---|---|
| committer | krolyxon <me@krolyxon.com> | 2026-06-08 23:12:15 +0530 |
| commit | 8a4d103196312b8a18afc0a2ba0fc13ff1a0b180 (patch) | |
| tree | a92424ac65fbdb93702ea8c44a5c52c9fd66e28c /.pio/libdeps/esp32-s3-n16r8/RF24/RF24.h | |
| parent | 1d557527be495c59bbc07f194d903b1cec1780d3 (diff) | |
remove .pio
Diffstat (limited to '.pio/libdeps/esp32-s3-n16r8/RF24/RF24.h')
| -rw-r--r-- | .pio/libdeps/esp32-s3-n16r8/RF24/RF24.h | 2568 |
1 files changed, 0 insertions, 2568 deletions
diff --git a/.pio/libdeps/esp32-s3-n16r8/RF24/RF24.h b/.pio/libdeps/esp32-s3-n16r8/RF24/RF24.h deleted file mode 100644 index f8fa473..0000000 --- a/.pio/libdeps/esp32-s3-n16r8/RF24/RF24.h +++ /dev/null @@ -1,2568 +0,0 @@ -/* - Copyright (C) 2011 J. Coliz <maniacbug@ymail.com> - - This program is free software; you can redistribute it and/or - modify it under the terms of the GNU General Public License - version 2 as published by the Free Software Foundation. - */ - -/** - * @file RF24.h - * - * Class declaration for RF24 and helper enums - */ - -#ifndef RF24_H_ -#define RF24_H_ - -#include "RF24_config.h" -#include "nRF24L01.h" - -#if defined(RF24_LINUX) || defined(LITTLEWIRE) - #include "utility/includes.h" -#elif defined SOFTSPI - #include <DigitalIO.h> -#endif - -/** - * @defgroup PALevel Power Amplifier level - * Power Amplifier level. The units dBm (decibel-milliwatts or dB<sub>mW</sub>) - * represents a logarithmic signal loss. - * @see - * - RF24::setPALevel() - * - RF24::getPALevel() - * @{ - */ -typedef enum -{ - /** - * (0) represents: - * nRF24L01 | Si24R1 with<br>lnaEnabled = 1 | Si24R1 with<br>lnaEnabled = 0 - * :-------:|:-----------------------------:|:----------------------------: - * -18 dBm | -6 dBm | -12 dBm - */ - RF24_PA_MIN = 0, - /** - * (1) represents: - * nRF24L01 | Si24R1 with<br>lnaEnabled = 1 | Si24R1 with<br>lnaEnabled = 0 - * :-------:|:-----------------------------:|:----------------------------: - * -12 dBm | 0 dBm | -4 dBm - */ - RF24_PA_LOW, - /** - * (2) represents: - * nRF24L01 | Si24R1 with<br>lnaEnabled = 1 | Si24R1 with<br>lnaEnabled = 0 - * :-------:|:-----------------------------:|:----------------------------: - * -6 dBm | 3 dBm | 1 dBm - */ - RF24_PA_HIGH, - /** - * (3) represents: - * nRF24L01 | Si24R1 with<br>lnaEnabled = 1 | Si24R1 with<br>lnaEnabled = 0 - * :-------:|:-----------------------------:|:----------------------------: - * 0 dBm | 7 dBm | 4 dBm - */ - RF24_PA_MAX, - /** - * (4) This should not be used and remains for backward compatibility. - */ - RF24_PA_ERROR -} rf24_pa_dbm_e; - -/** - * @} - * @defgroup Datarate datarate - * How fast data moves through the air. Units are in bits per second (bps). - * @see - * - RF24::setDataRate() - * - RF24::getDataRate() - * @{ - */ -typedef enum -{ - /** (0) represents 1 Mbps */ - RF24_1MBPS = 0, - /** (1) represents 2 Mbps */ - RF24_2MBPS, - /** (2) represents 250 kbps */ - RF24_250KBPS -} rf24_datarate_e; - -/** - * @} - * @defgroup CRCLength CRC length - * The length of a CRC checksum that is used (if any). Cyclical Redundancy - * Checking (CRC) is commonly used to ensure data integrity. - * @see - * - RF24::setCRCLength() - * - RF24::getCRCLength() - * - RF24::disableCRC() - * @{ - */ -typedef enum -{ - /** (0) represents no CRC checksum is used */ - RF24_CRC_DISABLED = 0, - /** (1) represents CRC 8 bit checksum is used */ - RF24_CRC_8, - /** (2) represents CRC 16 bit checksum is used */ - RF24_CRC_16 -} rf24_crclength_e; - -/** - * @} - * @defgroup fifoState FIFO state - * The state of a single FIFO (RX or TX). - * Remember, each FIFO has a maximum occupancy of 3 payloads. - * @see RF24::isFifo() - * @{ - */ -typedef enum -{ - /// @brief The FIFO is not full nor empty, but it is occupied with 1 or 2 payloads. - RF24_FIFO_OCCUPIED, - /// @brief The FIFO is empty. - RF24_FIFO_EMPTY, - /// @brief The FIFO is full. - RF24_FIFO_FULL, - /// @brief Represents corruption of data over SPI (when observed). - RF24_FIFO_INVALID, -} rf24_fifo_state_e; - -/** - * @} - * @defgroup StatusFlags Status flags - * @{ - */ - -/** - * @brief An enumeration of constants used to configure @ref StatusFlags - */ -typedef enum -{ - /// An alias of `0` to describe no IRQ events enabled. - RF24_IRQ_NONE = 0, - /// Represents an event where TX Data Failed to send. - RF24_TX_DF = 1 << nRF24L01::MASK_MAX_RT, - /// Represents an event where TX Data Sent successfully. - RF24_TX_DS = 1 << nRF24L01::TX_DS, - /// Represents an event where RX Data is Ready to `RF24::read()`. - RF24_RX_DR = 1 << nRF24L01::RX_DR, - /// Equivalent to `RF24_RX_DR | RF24_TX_DS | RF24_TX_DF`. - RF24_IRQ_ALL = (1 << nRF24L01::MASK_MAX_RT) | (1 << nRF24L01::TX_DS) | (1 << nRF24L01::RX_DR), -} rf24_irq_flags_e; - -/** - * @} - * @brief Driver class for nRF24L01(+) 2.4GHz Wireless Transceiver - */ -class RF24 -{ -private: -#ifdef SOFTSPI - SoftSPI<SOFT_SPI_MISO_PIN, SOFT_SPI_MOSI_PIN, SOFT_SPI_SCK_PIN, SPI_MODE> spi; -#elif defined(SPI_UART) - SPIUARTClass uspi; -#endif - -#if defined(RF24_LINUX) || defined(XMEGA_D3) /* XMEGA can use SPI class */ - SPI spi; -#endif // defined (RF24_LINUX) || defined (XMEGA_D3) -#if defined(RF24_SPI_PTR) - _SPI* _spi; -#endif // defined (RF24_SPI_PTR) - - rf24_gpio_pin_t ce_pin; /* "Chip Enable" pin, activates the RX or TX role */ - rf24_gpio_pin_t csn_pin; /* SPI Chip select */ - uint32_t spi_speed; /* SPI Bus Speed */ -#if defined(RF24_LINUX) || defined(XMEGA_D3) || defined(RF24_RP2) - uint8_t spi_rxbuff[32 + 1]; //SPI receive buffer (payload max 32 bytes) - uint8_t spi_txbuff[32 + 1]; //SPI transmit buffer (payload max 32 bytes + 1 byte for the command) -#endif - uint8_t status; /* The status byte returned from every SPI transaction */ - uint8_t payload_size; /* Fixed size of payloads */ - uint8_t pipe0_reading_address[5]; /* Last address set on pipe 0 for reading. */ - uint8_t pipe0_writing_address[5]; /* Last address set on pipe 0 for writing. */ - uint8_t config_reg; /* For storing the value of the CONFIG register */ - bool _is_p_variant; /* For storing the result of testing the toggleFeatures() affect */ - bool _is_p0_rx; /* For keeping track of pipe 0's usage in user-triggered RX mode. */ - -protected: - /** - * SPI transactions - * - * Common code for SPI transactions including CSN toggle - * - */ - inline void beginTransaction(); - - inline void endTransaction(); - - /** Whether ack payloads are enabled. */ - bool ack_payloads_enabled; - /** The address width to use (3, 4 or 5 bytes). */ - uint8_t addr_width; - /** Whether dynamic payloads are enabled. */ - bool dynamic_payloads_enabled; - - /** - * Read a chunk of data in from a register - * - * @param reg Which register. Use constants from nRF24L01.h - * @param[out] buf Where to put the data - * @param len How many bytes of data to transfer - * @note This returns nothing. Older versions of this function returned the status - * byte, but that it now saved to a private member on all SPI transactions. - */ - void read_register(uint8_t reg, uint8_t* buf, uint8_t len); - - /** - * Read single byte from a register - * - * @param reg Which register. Use constants from nRF24L01.h - * @return Current value of register @p reg - */ - uint8_t read_register(uint8_t reg); - -public: - /** - * @name Primary public interface - * - * These are the main methods you need to operate the chip - */ - /**@{*/ - - /** - * RF24 Constructor - * - * Creates a new instance of this driver. Before using, you create an instance - * and send in the unique pins that this chip is connected to. - * - * See [Related Pages](pages.html) for device specific information - * - * @param _cepin The pin attached to Chip Enable on the RF module. - * Review our [Linux general](rpi_general.md) doc for details about selecting pin numbers on Linux systems. - * @param _cspin The pin attached to Chip Select (often labeled CSN) on the radio module. - * - For the Arduino Due board, the [Arduino Due extended SPI feature](https://www.arduino.cc/en/Reference/DueExtendedSPI) - * is not supported. This means that the Due's pins 4, 10, or 52 are not mandated options (can use any digital output pin) for - * the radio's CSN pin. - * @param _spi_speed The SPI speed in Hz ie: 1000000 == 1Mhz - * - Users can specify default SPI speed by modifying @ref RF24_SPI_SPEED in @ref RF24_config.h - * - For Arduino, the default SPI speed will only be properly configured this way on devices supporting SPI TRANSACTIONS - * - Older/Unsupported Arduino devices will use a default clock divider & settings configuration - * - For Linux: The old way of setting SPI speeds using BCM2835 driver enums has been removed as of v1.3.7 - */ - RF24(rf24_gpio_pin_t _cepin, rf24_gpio_pin_t _cspin, uint32_t _spi_speed = RF24_SPI_SPEED); - - /** - * A constructor for initializing the radio's hardware dynamically - * @warning You MUST use begin(rf24_gpio_pin_t, rf24_gpio_pin_t) or begin(_SPI*, rf24_gpio_pin_t, rf24_gpio_pin_t) to pass both the - * digital output pin numbers connected to the radio's CE and CSN pins. - * @param _spi_speed The SPI speed in Hz ie: 1000000 == 1Mhz - * - Users can specify default SPI speed by modifying @ref RF24_SPI_SPEED in @ref RF24_config.h - * - For Arduino, the default SPI speed will only be properly configured this way on devices supporting SPI TRANSACTIONS - * - Older/Unsupported Arduino devices will use a default clock divider & settings configuration - * - For Linux: The old way of setting SPI speeds using BCM2835 driver enums has been removed as of v1.3.7 - */ - RF24(uint32_t _spi_speed = RF24_SPI_SPEED); - -#if defined(RF24_LINUX) - virtual ~RF24() {}; -#endif - - /** - * Begin operation of the chip - * - * Call this in setup(), before calling any other methods. - * @code - * if (!radio.begin()) { - * Serial.println(F("radio hardware not responding!")); - * while (1) {} // hold program in infinite loop to prevent subsequent errors - * } - * @endcode - * @return - * - `true` if the radio was successfully initialized - * - `false` if the MCU failed to communicate with the radio hardware - */ - bool begin(void); - -#if defined(RF24_SPI_PTR) || defined(DOXYGEN_FORCED) - /** - * Same as begin(), but allows specifying a non-default SPI bus to use. - * - * @note This function assumes the `SPI::begin()` method was called before to - * calling this function. - * - * @warning This function is for the Arduino platforms only - * - * @param spiBus A pointer or reference to an instantiated SPI bus object. - * The `_SPI` datatype is a "wrapped" definition that will represent - * various SPI implementations based on the specified platform. - * @see Review the [Arduino support page](arduino.md). - * - * @return same result as begin() - */ - bool begin(_SPI* spiBus); - - /** - * Same as begin(), but allows dynamically specifying a SPI bus, CE pin, - * and CSN pin to use. - * - * @note This function assumes the `SPI::begin()` method was called before to - * calling this function. - * - * @warning This function is for the Arduino platforms only - * - * @param spiBus A pointer or reference to an instantiated SPI bus object. - * The `_SPI` datatype is a "wrapped" definition that will represent - * various SPI implementations based on the specified platform. - * @param _cepin The pin attached to Chip Enable on the RF module. - * Review our [Linux general](rpi_general.md) doc for details about selecting pin numbers on Linux systems. - * @param _cspin The pin attached to Chip Select (often labeled CSN) on the radio module. - * - For the Arduino Due board, the [Arduino Due extended SPI feature](https://www.arduino.cc/en/Reference/DueExtendedSPI) - * is not supported. This means that the Due's pins 4, 10, or 52 are not mandated options (can use any digital output pin) for the radio's CSN pin. - * - * @see Review the [Arduino support page](arduino.md). - * - * @return same result as begin() - */ - bool begin(_SPI* spiBus, rf24_gpio_pin_t _cepin, rf24_gpio_pin_t _cspin); -#endif // defined (RF24_SPI_PTR) || defined (DOXYGEN_FORCED) - - /** - * Same as begin(), but allows dynamically specifying a CE pin - * and CSN pin to use. - * @param _cepin The pin attached to Chip Enable on the RF module - * @param _cspin The pin attached to Chip Select (often labeled CSN) on the radio module. - * - For the Arduino Due board, the [Arduino Due extended SPI feature](https://www.arduino.cc/en/Reference/DueExtendedSPI) - * is not supported. This means that the Due's pins 4, 10, or 52 are not mandated options (can use any digital output pin) for the radio's CSN pin. - * @return same result as begin() - */ - bool begin(rf24_gpio_pin_t _cepin, rf24_gpio_pin_t _cspin); - - /** - * Checks if the chip is connected to the SPI bus - */ - bool isChipConnected(); - - /** - * Start listening on the pipes opened for reading. - * - * 1. Be sure to call openReadingPipe() first. - * 2. Do not call write() while in this mode, without first calling stopListening(). - * 3. Call available() to check for incoming traffic, and read() to get it. - * - * Open reading pipe 1 using address `0xCCCECCCECC` - * @code - * byte address[] = {0xCC, 0xCE, 0xCC, 0xCE, 0xCC}; - * radio.openReadingPipe(1,address); - * radio.startListening(); - * @endcode - * - * @note If there was a call to openReadingPipe() about pipe 0 prior to - * calling this function, then this function will re-write the address - * that was last set to reading pipe 0. This is because openWritingPipe() - * will overwrite the address to reading pipe 0 for proper auto-ack - * functionality. - */ - void startListening(void); - - /** - * Stop listening for incoming messages, and switch to transmit mode. - * - * Do this before calling write(). - * @code - * radio.stopListening(); - * radio.write(&data, sizeof(data)); - * @endcode - * - * @warning When the ACK payloads feature is enabled, the TX FIFO buffers are - * flushed when calling this function. This is meant to discard any ACK - * payloads that were not appended to acknowledgment packets. - */ - void stopListening(void); - - /** - * @brief Similar to startListening(void) but changes the TX address. - * @param txAddress The new TX address. - * This value will be cached for auto-ack purposes. - */ - void stopListening(const uint8_t* txAddress); - - /** - * Check whether there are bytes available to be read - * @code - * if(radio.available()){ - * radio.read(&data,sizeof(data)); - * } - * @endcode - * - * @see available(uint8_t*) - * - * @return True if there is a payload available, false if none is - * - * @warning This function relies on the information about the pipe number - * that received the next available payload. According to the datasheet, - * the data about the pipe number that received the next available payload - * is "unreliable" during a FALLING transition on the IRQ pin. This means - * you should call clearStatusFlags() before calling this function - * during an ISR (Interrupt Service Routine). For example: - * @code - * void isrCallbackFunction() { - * bool tx_ds, tx_df, rx_dr; - * uint8_t flags = radio.clearStatusFlags(); // resets the IRQ pin to HIGH - * radio.available(); // returned data should now be reliable - * } - * - * void setup() { - * pinMode(IRQ_PIN, INPUT); - * attachInterrupt(digitalPinToInterrupt(IRQ_PIN), isrCallbackFunction, FALLING); - * } - * @endcode - */ - bool available(void); - - /** - * Read payload data from the RX FIFO buffer(s). - * - * The length of data read is usually the next available payload's length - * @see - * - getPayloadSize() - * - getDynamicPayloadSize() - * - * @note I specifically chose `void*` as a data type to make it easier - * for beginners to use. No casting needed. - * - * @param buf Pointer to a buffer where the data should be written - * @param len Maximum number of bytes to read into the buffer. This - * value should match the length of the object referenced using the - * `buf` parameter. The absolute maximum number of bytes that can be read - * in one call is 32 (for dynamic payload lengths) or whatever number was - * previously passed to setPayloadSize() (for static payload lengths). - * @remark - * @parblock - * Remember that each call to read() fetches data from the - * RX FIFO beginning with the first byte from the first available - * payload. A payload is not removed from the RX FIFO until it's - * entire length (or more) is fetched using read(). - * - * - If `len` parameter's value is less than the available payload's - * length, then the payload remains in the RX FIFO. - * - If `len` parameter's value is greater than the first of multiple - * available payloads, then the data saved to the `buf` - * parameter's object will be supplemented with data from the next - * available payload. - * - If `len` parameter's value is greater than the last available - * payload's length, then the last byte in the payload is used as - * padding for the data saved to the `buf` parameter's object. - * The nRF24L01 will repeatedly use the last byte from the last - * payload even when read() is called with an empty RX FIFO. - * @endparblock - * @note To use this function in the python wrapper, remember that - * only the `len` parameter is required because this function (in the - * python wrapper) returns the payload data as a buffer protocol object - * (bytearray object). - * @code{.py} - * # let `radio` be the instantiated RF24 object - * if radio.available(): - * length = radio.getDynamicPayloadSize() # or radio.getPayloadSize() for static payload sizes - * received_payload = radio.read(length) - * @endcode - * - * @note This function no longer returns a boolean. Use available to - * determine if packets are available. The `RX_DR` Interrupt flag is now - * cleared with this function instead of when calling available(). - * @code - * if(radio.available()) { - * radio.read(&data, sizeof(data)); - * } - * @endcode - */ - void read(void* buf, uint8_t len); - - /** - * Be sure to call openWritingPipe() first to set the destination - * of where to write to. - * - * This blocks until the message is successfully acknowledged by - * the receiver or the timeout/retransmit maxima are reached. In - * the current configuration, the max delay here is 60-70ms. - * - * The maximum size of data written is the fixed payload size, see - * getPayloadSize(). However, you can write less, and the remainder - * will just be filled with zeroes. - * - * TX/RX/RT interrupt flags will be cleared every time write is called - * - * @param buf Pointer to the data to be sent - * @param len Number of bytes to be sent - * - * @code - * radio.stopListening(); - * radio.write(&data,sizeof(data)); - * @endcode - * - * @note The `len` parameter must be omitted when using the python - * wrapper because the length of the payload is determined automatically. - * To use this function in the python wrapper: - * @code{.py} - * # let `radio` be the instantiated RF24 object - * buffer = b"Hello World" # a `bytes` object - * radio.write(buffer) - * @endcode - * - * @return - * - `true` if the payload was delivered successfully and an acknowledgement - * (ACK packet) was received. If auto-ack is disabled, then any attempt - * to transmit will also return true (even if the payload was not - * received). - * - `false` if the payload was sent but was not acknowledged with an ACK - * packet. This condition can only be reported if the auto-ack feature - * is on. - */ - bool write(const void* buf, uint8_t len); - - /** - * New: Open a pipe for writing via byte array. Old addressing format retained - * for compatibility. - * - * @deprecated Use `RF24::stopListening(uint8_t*)` instead. - * - * Only one writing pipe can be opened at once, but this function changes - * the address that is used to transmit (ACK payloads/packets do not apply - * here). Be sure to call stopListening() prior to calling this function. - * - * Addresses are assigned via a byte array, default is 5 byte address length - * - * @code - * uint8_t addresses[][6] = {"1Node", "2Node"}; - * radio.openWritingPipe(addresses[0]); - * @endcode - * @code - * uint8_t address[] = { 0xCC, 0xCE, 0xCC, 0xCE, 0xCC }; - * radio.openWritingPipe(address); - * address[0] = 0x33; - * radio.openReadingPipe(1, address); - * @endcode - * - * @warning This function will overwrite the address set to reading pipe 0 - * as stipulated by the datasheet for proper auto-ack functionality in TX - * mode. Use this function to ensure proper transmission acknowledgement - * when the address set to reading pipe 0 (via openReadingPipe()) does not - * match the address passed to this function. If the auto-ack feature is - * disabled, then this function will still overwrite the address for - * reading pipe 0 regardless. - * - * @see - * - setAddressWidth() - * - startListening() - * - stopListening() - * - * @param address The address to be used for outgoing transmissions (uses - * pipe 0). Coordinate this address amongst other receiving nodes (the - * pipe numbers don't need to match). This address is cached to ensure proper - * auto-ack behavior; stopListening() will always restore the latest cached TX - * address. - * - * @remark There is no address length parameter because this function will - * always write the number of bytes that the radio addresses are configured - * to use (set with setAddressWidth()). - */ - - void openWritingPipe(const uint8_t* address); - - /** - * Open a pipe for reading - * - * Up to 6 pipes can be open for reading at once. Open all the required - * reading pipes, and then call startListening(). - * - * @see - * - openWritingPipe() - * - setAddressWidth() - * - * @note Pipes 0 and 1 will store a full 5-byte address. Pipes 2-5 will technically - * only store a single byte, borrowing up to 4 additional bytes from pipe 1 per the - * assigned address width. - * Pipes 1-5 should share the same address, except the first byte. - * Only the first byte in the array should be unique, e.g. - * @code - * uint8_t addresses[][6] = {"Prime", "2Node", "3xxxx", "4xxxx"}; - * openReadingPipe(0, addresses[0]); // address used is "Prime" - * openReadingPipe(1, addresses[1]); // address used is "2Node" - * openReadingPipe(2, addresses[2]); // address used is "3Node" - * openReadingPipe(3, addresses[3]); // address used is "4Node" - * @endcode - * - * @warning - * @parblock - * If the reading pipe 0 is opened by this function, the address - * passed to this function (for pipe 0) will be restored at every call to - * startListening(). - * - * Read - * http://maniacalbits.blogspot.com/2013/04/rf24-addressing-nrf24l01-radios-require.html - * to understand how to avoid using malformed addresses. This address - * restoration is implemented because of the underlying necessary - * functionality of openWritingPipe(). - * @endparblock - * - * @param number Which pipe to open. Only pipe numbers 0-5 are available, - * an address assigned to any pipe number not in that range will be ignored. - * @param address The 24, 32 or 40 bit address of the pipe to open. - * - * There is no address length parameter because this function will - * always write the number of bytes (for pipes 0 and 1) that the radio - * addresses are configured to use (set with setAddressWidth()). - */ - void openReadingPipe(uint8_t number, const uint8_t* address); - - /**@}*/ - /** - * @name Advanced Operation - * - * Methods you can use to drive the chip in more advanced ways - */ - /**@{*/ - - /** - * Set radio's CE (Chip Enable) pin state. - * - * @warning Please see the datasheet for a much more detailed description of this pin. - * - * @note This is only publicly exposed for advanced use cases such as complex networking or - * streaming consecutive payloads without robust error handling. - * Typical uses are satisfied by simply using `startListening()` for RX mode or - * `stopListening()` and `write()` for TX mode. - * - * @param level In RX mode, `HIGH` causes the radio to begin actively listening. - * In TX mode, `HIGH` (+ 130 microsecond delay) causes the radio to begin transmitting. - * Setting this to `LOW` will cause the radio to stop transmitting or receiving in any mode. - */ - void ce(bool level); - - /** - * Print a giant block of debugging information to stdout - * - * @warning Does nothing if stdout is not defined. See fdevopen in stdio.h - * The printf.h file is included with the library for Arduino. - * @code - * #include <printf.h> - * setup() { - * Serial.begin(115200); - * printf_begin(); - * // ... - * } - * @endcode - */ - void printDetails(void); - - /** - * Decode and print the given STATUS byte to stdout. - * - * @param flags The STATUS byte to print. - * This value is fetched with update() or getStatusFlags(). - * - * @warning Does nothing if stdout is not defined. See fdevopen in stdio.h - */ - void printStatus(uint8_t flags); - - /** - * Print a giant block of debugging information to stdout. This function - * differs from printDetails() because it makes the information more - * understandable without having to look up the datasheet or convert - * hexadecimal to binary. Only use this function if your application can - * spare extra bytes of memory. - * - * @warning Does nothing if stdout is not defined. See fdevopen in stdio.h - * The printf.h file is included with the library for Arduino. - * @code - * #include <printf.h> - * setup() { - * Serial.begin(115200); - * printf_begin(); - * // ... - * } - * @endcode - * - * @note If the automatic acknowledgements feature is configured differently - * for each pipe, then a binary representation is used in which bits 0-5 - * represent pipes 0-5 respectively. A `0` means the feature is disabled, and - * a `1` means the feature is enabled. - */ - void printPrettyDetails(void); - - /** - * Put a giant block of debugging information in a char array. This function - * differs from printPrettyDetails() because it uses `sprintf()` and does not use - * a predefined output stream (like `Serial` or stdout). Only use this function if - * your application can spare extra bytes of memory. This can also be used for boards that - * do not support `printf()` (which is required for printDetails() and printPrettyDetails()). - * - * @remark - * The C standard function [sprintf()](http://www.cplusplus.com/reference/cstdio/sprintf) - * formats a C-string in the exact same way as `printf()` but outputs (by reference) - * into a char array. The formatted string literal for sprintf() is stored - * in nonvolatile program memory. - * - * @warning Use a buffer of sufficient size for the `debugging_information`. Start - * with a char array that has at least 870 elements. There is no overflow protection when using - * sprintf(), so the output buffer must be sized correctly or the resulting behavior will - * be undefined. - * @code - * char buffer[870] = {'\0'}; - * uint16_t used_chars = radio.sprintfPrettyDetails(buffer); - * Serial.println(buffer); - * Serial.print(F("strlen = ")); - * Serial.println(used_chars + 1); // +1 for c-strings' null terminating byte - * @endcode - * - * @param debugging_information The c-string buffer that the debugging - * information is stored to. This must be allocated to a minimum of 870 bytes of memory. - * @returns The number of characters altered in the given buffer. Remember that, - * like `sprintf()`, this returned number does not include the null terminating byte. - * - * This function is available in the python wrapper, but it accepts no parameters and - * returns a string. It does not return the number of characters in the string. - * @code{.py} - * debug_info = radio.sprintfPrettyDetails() - * print(debug_info) - * print("str_len =", len(debug_info)) - * @endcode - * - * @note If the automatic acknowledgements feature is configured differently - * for each pipe, then a binary representation is used in which bits 0-5 - * represent pipes 0-5 respectively. A `0` means the feature is disabled, and - * a `1` means the feature is enabled. - */ - uint16_t sprintfPrettyDetails(char* debugging_information); - - /** - * Encode radio debugging information into an array of uint8_t. This function - * differs from other debug output methods because the debug information can - * be decoded by an external program. - * - * This function is not available in the python wrapper because it is intended for - * use on processors with very limited available resources. - * - * @remark - * This function uses much less ram than other `*print*Details()` methods. - * - * @code - * uint8_t encoded_details[43] = {0}; - * radio.encodeRadioDetails(encoded_details); - * @endcode - * - * @param encoded_status The uint8_t array that RF24 radio details are - * encoded into. This array must be at least 43 bytes in length; any less would surely - * cause undefined behavior. - * - * Registers names and/or data corresponding to the index of the `encoded_details` array: - * | index | register/data | - * |------:|:--------------| - * | 0 | CONFIG | - * | 1 | EN_AA | - * | 2 | EN_RXADDR | - * | 3 | SETUP_AW | - * | 4 | SETUP_RETR | - * | 5 | RF_CH | - * | 6 | RF_SETUP | - * | 7 | STATUS | - * | 8 | OBSERVE_TX | - * | 9 | CD (aka RPD) | - * | 10-14 | RX_ADDR_P0 | - * | 15-19 | RX_ADDR_P1 | - * | 20 | RX_ADDR_P2 | - * | 21 | RX_ADDR_P3 | - * | 22 | RX_ADDR_P4 | - * | 23 | RX_ADDR_P5 | - * | 24-28 | TX_ADDR | - * | 29 | RX_PW_P0 | - * | 30 | RX_PW_P1 | - * | 31 | RX_PW_P2 | - * | 32 | RX_PW_P3 | - * | 33 | RX_PW_P4 | - * | 34 | RX_PW_P5 | - * | 35 | FIFO_STATUS | - * | 36 | DYNPD | - * | 37 | FEATURE | - * | 38-39 | ce_pin | - * | 40-41 | csn_pin | - * | 42 | SPI speed (in MHz) or'd with (isPlusVariant << 4) | - */ - void encodeRadioDetails(uint8_t* encoded_status); - - /** - * Test whether there are bytes available to be read from the - * FIFO buffers. - * - * @note This function is named `available_pipe()` in the python wrapper. - * @parblock - * Additionally, the `available_pipe()` function (which - * takes no arguments) returns a 2 item tuple containing (ordered by - * tuple's indices): - * - A boolean describing if there is a payload available to read from - * the RX FIFO buffers. - * - The pipe number that received the next available payload in the RX - * FIFO buffers. If the item at the tuple's index 0 is `False`, then - * this pipe number is invalid. - * - * To use this function in python: - * @code{.py} - * # let `radio` be the instantiated RF24 object - * has_payload, pipe_number = radio.available_pipe() # expand the tuple to 2 variables - * if has_payload: - * print("Received a payload with pipe", pipe_number) - * @endcode - * @endparblock - * - * @param[out] pipe_num Which pipe has the payload available - * @code - * uint8_t pipeNum; - * if(radio.available(&pipeNum)){ - * radio.read(&data, sizeof(data)); - * Serial.print("Received data on pipe "); - * Serial.println(pipeNum); - * } - * @endcode - * - * @warning According to the datasheet, the data saved to `pipe_num` is - * "unreliable" during a FALLING transition on the IRQ pin. This means you - * should call clearStatusFlags() before calling this function during - * an ISR (Interrupt Service Routine). For example: - * @code - * void isrCallbackFunction() { - * radio.clearStatusFlags(); // resets the IRQ pin to inactive HIGH - * uint8_t pipe = 7; // initialize pipe data - * radio.available(&pipe); // pipe data should now be reliable - * } - * - * void setup() { - * pinMode(IRQ_PIN, INPUT); - * attachInterrupt(digitalPinToInterrupt(IRQ_PIN), isrCallbackFunction, FALLING); - * } - * @endcode - * - * @return - * - `true` if there is a payload available in the top (first out) - * level RX FIFO. - * - `false` if there is nothing available in the RX FIFO because it is - * empty. - */ - bool available(uint8_t* pipe_num); - - /** - * Use this function to check if the radio's RX FIFO levels are all - * occupied. This can be used to prevent data loss because any incoming - * transmissions are rejected if there is no unoccupied levels in the RX - * FIFO to store the incoming payload. Remember that each level can hold - * up to a maximum of 32 bytes. - * @return - * - `true` if all three 3 levels of the RX FIFO buffers are occupied. - * - `false` if there is one or more levels available in the RX FIFO - * buffers. Remember that this does not always mean that the RX FIFO - * buffers are empty; use available() to see if the RX FIFO buffers are - * empty or not. - */ - bool rxFifoFull(); - - /** - * @param about_tx `true` focuses on the TX FIFO, `false` focuses on the RX FIFO - * @return - * - @ref RF24_FIFO_OCCUPIED (`0`) if the specified FIFO is neither full nor empty. - * - @ref RF24_FIFO_EMPTY (`1`) if the specified FIFO is empty. - * - @ref RF24_FIFO_FULL (`2`) if the specified FIFO is full. - * - @ref RF24_FIFO_INVALID (`3`) if the data fetched over SPI was malformed. - */ - rf24_fifo_state_e isFifo(bool about_tx); - - /** - * @deprecated Use RF24::isFifo(bool about_tx) instead. - * See our [migration guide](migration.md) to understand what you should update in your code. - * - * @param about_tx `true` focuses on the TX FIFO, `false` focuses on the RX FIFO - * @param check_empty - * - `true` checks if the specified FIFO is empty - * - `false` checks is the specified FIFO is full. - * @return A boolean answer to the question "is the [TX/RX] FIFO [empty/full]?" - */ - bool isFifo(bool about_tx, bool check_empty); - - /** - * Enter low-power mode - * - * To return to normal power mode, call powerUp(). - * - * @note After calling startListening(), a basic radio will consume about 13.5mA - * at max PA level. - * During active transmission, the radio will consume about 11.5mA, but this will - * be reduced to 26uA (.026mA) between sending. - * In full powerDown mode, the radio will consume approximately 900nA (.0009mA) - * - * @code - * radio.powerDown(); - * avr_enter_sleep_mode(); // Custom function to sleep the device - * radio.powerUp(); - * @endcode - */ - void powerDown(void); - - /** - * Leave low-power mode - required for normal radio operation after calling powerDown() - * - * To return to low power mode, call powerDown(). - * @note This will take up to 5ms for maximum compatibility - */ - void powerUp(void); - - /** - * Write for single NOACK writes. Optionally disable - * acknowledgements/auto-retries for a single payload using the - * multicast parameter set to true. - * - * Can be used with enableAckPayload() to request a response - * @see - * - setAutoAck() - * - write() - * - * @param buf Pointer to the data to be sent - * @param len Number of bytes to be sent - * @param multicast Request ACK response (false), or no ACK response - * (true). Be sure to have called enableDynamicAck() at least once before - * setting this parameter. - * @return - * - `true` if the payload was delivered successfully and an acknowledgement - * (ACK packet) was received. If auto-ack is disabled, then any attempt - * to transmit will also return true (even if the payload was not - * received). - * - `false` if the payload was sent but was not acknowledged with an ACK - * packet. This condition can only be reported if the auto-ack feature - * is on. - * - * @note The `len` parameter must be omitted when using the python - * wrapper because the length of the payload is determined automatically. - * To use this function in the python wrapper: - * @code{.py} - * # let `radio` be the instantiated RF24 object - * buffer = b"Hello World" # a `bytes` object - * radio.write(buffer, False) # False = the multicast parameter - * @endcode - */ - bool write(const void* buf, uint8_t len, const bool multicast); - - /** - * This will not block until the 3 FIFO buffers are filled with data. - * Once the FIFOs are full, writeFast() will simply wait for a buffer to - * become available or a transmission failure (returning `true` or `false` - * respectively). - * - * @warning - * @parblock - * It is important to never keep the nRF24L01 in TX mode and FIFO full for more than 4ms at a time. If the auto - * retransmit is enabled, the nRF24L01 is never in TX mode long enough to disobey this rule. Allow the FIFO - * to clear by issuing txStandBy() or ensure appropriate time between transmissions. - * - * Use txStandBy() when this function returns `false`. - * - * Example (Partial blocking): - * @code - * radio.writeFast(&buf,32); // Writes 1 payload to the buffers - * txStandBy(); // Returns 0 if failed. 1 if success. Blocks only until MAX_RT timeout or success. Data flushed on fail. - * - * radio.writeFast(&buf,32); // Writes 1 payload to the buffers - * txStandBy(1000); // Using extended timeouts, returns 1 if success. Retries failed payloads for 1 seconds before returning 0. - * @endcode - * @endparblock - * - * @see - * - setAutoAck() - * - txStandBy() - * - write() - * - writeBlocking() - * - * @param buf Pointer to the data to be sent - * @param len Number of bytes to be sent - * @return - * - `true` if the payload passed to `buf` was loaded in the TX FIFO. - * - `false` if the payload passed to `buf` was not loaded in the TX FIFO - * because a previous payload already in the TX FIFO failed to - * transmit. This condition can only be reported if the auto-ack feature - * is on. - * - * @note The `len` parameter must be omitted when using the python - * wrapper because the length of the payload is determined automatically. - * To use this function in the python wrapper: - * @code{.py} - * # let `radio` be the instantiated RF24 object - * buffer = b"Hello World" # a `bytes` object - * radio.writeFast(buffer) - * @endcode - */ - bool writeFast(const void* buf, uint8_t len); - - /** - * Similar to writeFast(const void*, uint8_t) but allows for single NOACK writes. - * Optionally disable acknowledgements/auto-retries for a single payload using the - * multicast parameter set to `true`. - * - * @warning If the auto-ack feature is enabled, then it is strongly encouraged to call - * txStandBy() when this function returns `false`. - * - * @see - * - setAutoAck() - * - txStandBy() - * - write() - * - writeBlocking() - * - * @param buf Pointer to the data to be sent - * @param len Number of bytes to be sent - * @param multicast Request ACK response (false), or no ACK response - * (true). Be sure to have called enableDynamicAck() at least once before - * setting this parameter. - * @return - * - `true` if the payload passed to `buf` was loaded in the TX FIFO. - * - `false` if the payload passed to `buf` was not loaded in the TX FIFO - * because a previous payload already in the TX FIFO failed to - * transmit. This condition can only be reported if the auto-ack feature - * is on (and the multicast parameter is set to false). - * - * @note The `len` parameter must be omitted when using the python - * wrapper because the length of the payload is determined automatically. - * To use this function in the python wrapper: - * @code{.py} - * # let `radio` be the instantiated RF24 object - * buffer = b"Hello World" # a `bytes` object - * radio.writeFast(buffer, False) # False = the multicast parameter - * @endcode - */ - bool writeFast(const void* buf, uint8_t len, const bool multicast); - - /** - * This function extends the auto-retry mechanism to any specified duration. - * It will not block until the 3 FIFO buffers are filled with data. - * If so the library will auto retry until a new payload is written - * or the user specified timeout period is reached. - * @warning It is important to never keep the nRF24L01 in TX mode and FIFO full for more than 4ms at a time. If the auto - * retransmit is enabled, the nRF24L01 is never in TX mode long enough to disobey this rule. Allow the FIFO - * to clear by issuing txStandBy() or ensure appropriate time between transmissions. - * - * Example (Full blocking): - * @code - * radio.writeBlocking(&buf, sizeof(buf), 1000); // Wait up to 1 second to write 1 payload to the buffers - * radio.txStandBy(1000); // Wait up to 1 second for the payload to send. Return 1 if ok, 0 if failed. - * // Blocks only until user timeout or success. Data flushed on fail. - * @endcode - * @note If used from within an interrupt, the interrupt should be disabled until completion, and sei(); called to enable millis(). - * @see - * - txStandBy() - * - write() - * - writeFast() - * - * @param buf Pointer to the data to be sent - * @param len Number of bytes to be sent - * @param timeout User defined timeout in milliseconds. - * - * @note The `len` parameter must be omitted when using the python - * wrapper because the length of the payload is determined automatically. - * To use this function in the python wrapper: - * @code{.py} - * # let `radio` be the instantiated RF24 object - * buffer = b"Hello World" # a `bytes` object - * radio.writeBlocking(buffer, 1000) # 1000 means wait at most 1 second - * @endcode - * - * @return - * - `true` if the payload passed to `buf` was loaded in the TX FIFO. - * - `false` if the payload passed to `buf` was not loaded in the TX FIFO - * because a previous payload already in the TX FIFO failed to - * transmit. This condition can only be reported if the auto-ack feature - * is on. - */ - bool writeBlocking(const void* buf, uint8_t len, uint32_t timeout); - - /** - * This function should be called as soon as transmission is finished to - * drop the radio back to STANDBY-I mode. If not issued, the radio will - * remain in STANDBY-II mode which, per the data sheet, is not a recommended - * operating mode. - * - * @note When transmitting data in rapid succession, it is still recommended by - * the manufacturer to drop the radio out of TX or STANDBY-II mode if there is - * time enough between sends for the FIFOs to empty. This is not required if auto-ack - * is enabled. - * - * Relies on built-in auto retry functionality. - * - * Example (Partial blocking): - * @code - * radio.writeFast(&buf, 32); - * radio.writeFast(&buf, 32); - * radio.writeFast(&buf, 32); //Fills the FIFO buffers up - * bool ok = radio.txStandBy(); //Returns 0 if failed. 1 if success. - * //Blocks only until MAX_RT timeout or success. Data flushed on fail. - * @endcode - * @see txStandBy(uint32_t timeout, bool startTx) - * @return - * - `true` if all payloads in the TX FIFO were delivered successfully and - * an acknowledgement (ACK packet) was received for each. If auto-ack is - * disabled, then any attempt to transmit will also return true (even if - * the payload was not received). - * - `false` if a payload was sent but was not acknowledged with an ACK - * packet. This condition can only be reported if the auto-ack feature - * is on. - */ - bool txStandBy(); - - /** - * This function allows extended blocking and auto-retries per a user defined timeout - * - * Fully Blocking Example: - * @code - * radio.writeFast(&buf, 32); - * radio.writeFast(&buf, 32); - * radio.writeFast(&buf, 32); //Fills the FIFO buffers up - * bool ok = radio.txStandBy(1000); //Returns 0 if failed after 1 second of retries. 1 if success. - * //Blocks only until user defined timeout or success. Data flushed on fail. - * @endcode - * @note If used from within an interrupt, the interrupt should be disabled until completion, and sei(); called to enable millis(). - * @param timeout Number of milliseconds to retry failed payloads - * @param startTx If this is set to `true`, then this function puts the nRF24L01 - * in TX Mode. `false` leaves the primary mode (TX or RX) as it is, which can - * prevent the mandatory wait time to change modes. - * @return - * - `true` if all payloads in the TX FIFO were delivered successfully and - * an acknowledgement (ACK packet) was received for each. If auto-ack is - * disabled, then any attempt to transmit will also return true (even if - * the payload was not received). - * - `false` if a payload was sent but was not acknowledged with an ACK - * packet. This condition can only be reported if the auto-ack feature - * is on. - */ - bool txStandBy(uint32_t timeout, bool startTx = 0); - - /** - * Write an acknowledgement (ACK) payload for the specified pipe - * - * The next time a message is received on a specified `pipe`, the data in - * `buf` will be sent back in the ACK payload. - * - * @see - * - enableAckPayload() - * - enableDynamicPayloads() - * - * @note ACK payloads are handled automatically by the radio chip when a - * regular payload is received. It is important to discard regular payloads - * in the TX FIFO (using flush_tx()) before loading the first ACK payload - * into the TX FIFO. This function can be called before and after calling - * startListening(). - * - * @warning Only three of these can be pending at any time as there are - * only 3 FIFO buffers. Dynamic payloads must be enabled. - * - * @note ACK payloads are dynamic payloads. Calling enableAckPayload() - * will automatically enable dynamic payloads on pipe 0 (required for TX - * mode when expecting ACK payloads) & pipe 1. To use ACK payloads on any other - * pipe in RX mode, call enableDynamicPayloads(). - * - * @param pipe Which pipe# (typically 1-5) will get this response. - * @param buf Pointer to data that is sent - * @param len Length of the data to send, up to 32 bytes max. Not affected - * by the static payload size set by setPayloadSize(). - * - * @note The `len` parameter must be omitted when using the python - * wrapper because the length of the payload is determined automatically. - * To use this function in the python wrapper: - * @code{.py} - * # let `radio` be the instantiated RF24 object - * buffer = b"Hello World" # a `bytes` object - * radio.writeAckPayload(1, buffer) # load an ACK payload for response on pipe 1 - * @endcode - * - * @return - * - `true` if the payload was loaded into the TX FIFO. - * - `false` if the payload wasn't loaded into the TX FIFO because it is - * already full or the ACK payload feature is not enabled using - * enableAckPayload(). - */ - bool writeAckPayload(uint8_t pipe, const void* buf, uint8_t len); - - /** - * Clear the Status flags that caused an interrupt event. - * - * @remark This function is similar to `whatHappened()` because it also returns the - * Status flags that caused the interrupt event. However, this function returns - * a STATUS byte instead of bit-banging into 3 1-byte booleans - * passed by reference. - * - * @note When used in an ISR (Interrupt Service routine), there is a chance that the - * returned bits 0b1110 (rx_pipe number) is inaccurate. See available(uint8_t*) (or the - * datasheet) for more detail. - * - * @param flags The IRQ flags to clear. Default value is all of them (`RF24_IRQ_ALL`). - * Multiple flags can be cleared by OR-ing rf24_irq_flags_e values together. - * - * @returns The STATUS byte from the radio's register before it was modified. Use - * enumerations of rf24_irq_flags_e as masks to interpret the STATUS byte's meaning(s). - * - * @ingroup StatusFlags - */ - uint8_t clearStatusFlags(uint8_t flags = RF24_IRQ_ALL); - - /** - * Set which flags shall be reflected on the radio's IRQ pin. - * - * @remarks This function is similar to maskIRQ() but with less confusing parameters. - * - * @param flags A value of rf24_irq_flags_e to influence the radio's IRQ pin. - * The default value (`RF24_IRQ_NONE`) will disable the radio's IRQ pin. - * Multiple events can be enabled by OR-ing rf24_irq_flags_e values together. - * ```cpp - * radio.setStatusFlags(RF24_IRQ_ALL); - * // is equivalent to - * radio.setStatusFlags(RF24_RX_DR | RF24_TX_DS | RF24_TX_DF); - * ``` - * - * @ingroup StatusFlags - */ - void setStatusFlags(uint8_t flags = RF24_IRQ_NONE); - - /** - * Get the latest STATUS byte returned from the last SPI transaction. - * - * @note This does not actually perform any SPI transaction with the radio. - * Use `RF24::update()` instead to get a fresh copy of the Status flags at - * the slight cost of performance. - * - * @returns The STATUS byte from the radio's register as the latest SPI transaction. Use - * enumerations of rf24_irq_flags_e as masks to interpret the STATUS byte's meaning(s). - * - * @ingroup StatusFlags - */ - uint8_t getStatusFlags(); - - /** - * Get an updated STATUS byte from the radio. - * - * @returns The STATUS byte fetched from the radio's register. Use enumerations of - * rf24_irq_flags_e as masks to interpret the STATUS byte's meaning(s). - * - * @ingroup StatusFlags - */ - uint8_t update(); - - /** - * Non-blocking write to the open writing pipe used for buffered writes - * - * @note Optimization: This function now leaves the CE pin high, so the radio - * will remain in TX or STANDBY-II Mode until a txStandBy() command is issued. Can be used as an alternative to startWrite() - * if writing multiple payloads at once. - * @warning It is important to never keep the nRF24L01 in TX mode with FIFO full for more than 4ms at a time. If the auto - * retransmit/autoAck is enabled, the nRF24L01 is never in TX mode long enough to disobey this rule. Allow the FIFO - * to clear by issuing txStandBy() or ensure appropriate time between transmissions. - * - * @see - * - write() - * - writeFast() - * - startWrite() - * - writeBlocking() - * - setAutoAck() (for single noAck writes) - * - * @param buf Pointer to the data to be sent - * @param len Number of bytes to be sent - * @param multicast Request ACK response (false), or no ACK response - * (true). Be sure to have called enableDynamicAck() at least once before - * setting this parameter. - * @param startTx If this is set to `true`, then this function sets the - * nRF24L01's CE pin to active (enabling TX transmissions). `false` has no - * effect on the nRF24L01's CE pin and simply loads the payload into the - * TX FIFO. - * - * @note The `len` parameter must be omitted when using the python - * wrapper because the length of the payload is determined automatically. - * To use this function in the python wrapper: - * @code{.py} - * # let `radio` be the instantiated RF24 object - * buffer = b"Hello World" # a `bytes` object - * radio.startFastWrite(buffer, False, True) # 3rd parameter is optional - * # False means expecting ACK response (multicast parameter) - * # True means initiate transmission (startTx parameter) - * @endcode - */ - void startFastWrite(const void* buf, uint8_t len, const bool multicast, bool startTx = 1); - - /** - * Non-blocking write to the open writing pipe - * - * Just like write(), but it returns immediately. To find out what happened - * to the send, catch the IRQ and then call clearStatusFlags() or update(). - * - * @see - * - write() - * - writeFast() - * - startFastWrite() - * - clearStatusFlags() - * - setAutoAck() (for single noAck writes) - * - * @param buf Pointer to the data to be sent - * @param len Number of bytes to be sent - * @param multicast Request ACK response (false), or no ACK response - * (true). Be sure to have called enableDynamicAck() at least once before - * setting this parameter. - * - * @return - * - `true` if payload was written to the TX FIFO buffers and the - * transmission was started. - * - `false` if the TX FIFO is full and the payload could not be written. In - * this condition, the transmission process is restarted. - * @note The `len` parameter must be omitted when using the python - * wrapper because the length of the payload is determined automatically. - * To use this function in the python wrapper: - * @code{.py} - * # let `radio` be the instantiated RF24 object - * buffer = b"Hello World" # a `bytes` object - * radio.startWrite(buffer, False) # False = the multicast parameter - * @endcode - */ - bool startWrite(const void* buf, uint8_t len, const bool multicast); - - /** - * The function will instruct the radio to re-use the payload in the - * top level (first out) of the TX FIFO buffers. This is used internally - * by writeBlocking() to initiate retries when a TX failure - * occurs. Retries are automatically initiated except with the standard - * write(). This way, data is not flushed from the buffer until calling - * flush_tx(). If the TX FIFO has only the one payload (in the top level), - * the re-used payload can be overwritten by using write(), writeFast(), - * writeBlocking(), startWrite(), or startFastWrite(). If the TX FIFO has - * other payloads enqueued, then the aforementioned functions will attempt - * to enqueue the a new payload in the TX FIFO (does not overwrite the top - * level of the TX FIFO). Currently, stopListening() also calls flush_tx() - * when ACK payloads are enabled (via enableAckPayload()). - * - * Upon exiting, this function will set the CE pin HIGH to initiate the - * re-transmission process. If only 1 re-transmission is desired, then the - * CE pin should be set to LOW after the mandatory minumum pulse duration - * of 10 microseconds. - * - * @remark This function only applies when taking advantage of the - * auto-retry feature. See setAutoAck() and setRetries() to configure the - * auto-retry feature. - * - * @note This is to be used AFTER auto-retry fails if wanting to resend - * using the built-in payload reuse feature. After issuing reUseTX(), it - * will keep resending the same payload until a transmission failure - * occurs or the CE pin is set to LOW (whichever comes first). In the - * event of a re-transmission failure, simply call this function again to - * resume re-transmission of the same payload. - */ - void reUseTX(); - - /** - * Empty all 3 of the TX (transmit) FIFO buffers. This is automatically - * called by stopListening() if ACK payloads are enabled. However, - * startListening() does not call this function. - * - * @return Current value of status register - */ - uint8_t flush_tx(void); - - /** - * Empty all 3 of the RX (receive) FIFO buffers. - * - * @return Current value of status register - */ - uint8_t flush_rx(void); - - /** - * Test whether there was a carrier on the line for the - * previous listening period. - * - * Useful to check for interference on the current channel. - * - * @return true if was carrier, false if not - */ - bool testCarrier(void); - - /** - * Test whether a signal (carrier or otherwise) greater than - * or equal to -64dBm is present on the channel. Valid only - * on nRF24L01P (+) hardware. On nRF24L01, use testCarrier(). - * - * Useful to check for interference on the current channel and - * channel hopping strategies. - * - * @code - * bool goodSignal = radio.testRPD(); - * if(radio.available()){ - * Serial.println(goodSignal ? "Strong signal > -64dBm" : "Weak signal < -64dBm" ); - * radio.read(&payload,sizeof(payload)); - * } - * @endcode - * @return true if a signal greater than or equal to -64dBm was detected, - * false if not. - */ - bool testRPD(void); - - /** - * Test whether this is a real radio, or a mock shim for - * debugging. Setting either pin to 0xff is the way to - * indicate that this is not a real radio. - * - * @return true if this is a legitimate radio - */ - bool isValid(); - - /** - * Close a pipe after it has been previously opened. - * Can be safely called without having previously opened a pipe. - * @param pipe Which pipe number to close, any integer not in range [0, 5] - * is ignored. - */ - void closeReadingPipe(uint8_t pipe); - -#if defined(FAILURE_HANDLING) - /** - * - * If a failure has been detected, it usually indicates a hardware issue. By default the library - * will cease operation when a failure is detected. - * This should allow advanced users to detect and resolve intermittent hardware issues. - * - * In most cases, the radio must be re-enabled via radio.begin(); and the appropriate settings - * applied after a failure occurs, if wanting to re-enable the device immediately. - * - * The three main failure modes of the radio include: - * - * 1. Writing to radio: Radio unresponsive - * - Fixed internally by adding a timeout to the internal write functions in RF24 (failure handling) - * 2. Reading from radio: Available returns true always - * - Fixed by adding a timeout to available functions by the user. This is implemented internally in RF24Network. - * 3. Radio configuration settings are lost - * - Fixed by monitoring a value that is different from the default, and re-configuring the radio if this setting reverts to the default. - * - * See the included example, GettingStarted_HandlingFailures - * - * @code - * if(radio.failureDetected) { - * radio.begin(); // Attempt to re-configure the radio with defaults - * radio.failureDetected = 0; // Reset the detection value - * radio.openWritingPipe(addresses[1]); // Re-configure pipe addresses - * radio.openReadingPipe(1, addresses[0]); - * report_failure(); // Blink LEDs, send a message, etc. to indicate failure - * } - * @endcode - */ - bool failureDetected; - uint16_t failureRecoveryAttempts; - -#endif // defined (FAILURE_HANDLING) - - /**@}*/ - /** - * @name Optional Configurators - * - * Methods you can use to get or set the configuration of the chip. - * None are required. Calling begin() sets up a reasonable set of - * defaults. - */ - /**@{*/ - - /** - * Set the address width from 3 to 5 bytes (24, 32 or 40 bit) - * - * @param a_width The address width (in bytes) to use; this can be 3, 4 or - * 5. - */ - void setAddressWidth(uint8_t a_width); - - /** - * Set the number of retry attempts and delay between retry attempts when - * transmitting a payload. The radio is waiting for an acknowledgement - * (ACK) packet during the delay between retry attempts. - * - * @param delay How long to wait between each retry, in multiples of - * 250 us. The minimum of 0 means 250 us, and the maximum of 15 means - * 4000 us. The default value of 5 means 1500us (5 * 250 + 250). - * @param count How many retries before giving up. The default/maximum is 15. Use - * 0 to disable the auto-retry feature all together. - * - * @note Disable the auto-retry feature on a transmitter still uses the - * auto-ack feature (if enabled), except it will not retry to transmit if - * the payload was not acknowledged on the first attempt. - */ - void setRetries(uint8_t delay, uint8_t count); - - /** - * Set RF communication channel. The frequency used by a channel is - * calculated as: - * @verbatim 2400 MHz + <channel number> @endverbatim - * Meaning the default channel of 76 uses the approximate frequency of - * 2476 MHz. - * - * @note In the python wrapper, this function is the setter of the - * `channel` attribute.To use this function in the python wrapper: - * @code{.py} - * # let `radio` be the instantiated RF24 object - * radio.channel = 2 # set the channel to 2 (2402 MHz) - * @endcode - * - * @param channel Which RF channel to communicate on, 0-125 - */ - void setChannel(uint8_t channel); - - /** - * Get RF communication channel - * - * @note In the python wrapper, this function is the getter of the - * `channel` attribute.To use this function in the python wrapper: - * @code{.py} - * # let `radio` be the instantiated RF24 object - * chn = radio.channel # get the channel - * @endcode - * - * @return The currently configured RF Channel - */ - uint8_t getChannel(void); - - /** - * Set Static Payload Size - * - * This implementation uses a pre-established fixed payload size for all - * transmissions. If this method is never called, the driver will always - * transmit the maximum payload size (32 bytes), no matter how much - * was sent to write(). - * - * @note In the python wrapper, this function is the setter of the - * `payloadSize` attribute.To use this function in the python wrapper: - * @code{.py} - * # let `radio` be the instantiated RF24 object - * radio.payloadSize = 16 # set the static payload size to 16 bytes - * @endcode - * - * @param size The number of bytes in the payload - */ - void setPayloadSize(uint8_t size); - - /** - * Get Static Payload Size - * - * @note In the python wrapper, this function is the getter of the - * `payloadSize` attribute.To use this function in the python wrapper: - * @code{.py} - * # let `radio` be the instantiated RF24 object - * pl_size = radio.payloadSize # get the static payload size - * @endcode - * - * @see setPayloadSize() - * - * @return The number of bytes in the payload - */ - uint8_t getPayloadSize(void); - - /** - * Get Dynamic Payload Size - * - * For dynamic payloads, this pulls the size of the payload off - * the chip - * - * @note Corrupt packets are now detected and flushed per the - * manufacturer. - * @code - * if(radio.available()){ - * if(radio.getDynamicPayloadSize() < 1){ - * // Corrupt payload has been flushed - * return; - * } - * radio.read(&data,sizeof(data)); - * } - * @endcode - * - * @return Payload length of last-received dynamic payload - */ - uint8_t getDynamicPayloadSize(void); - - /** - * Enable custom payloads in the acknowledge packets - * - * ACK payloads are a handy way to return data back to senders without - * manually changing the radio modes on both units. - * - * @remarks The ACK payload feature requires the auto-ack feature to be - * enabled for any pipe using ACK payloads. This function does not - * automatically enable the auto-ack feature on pipe 0 since the auto-ack - * feature is enabled for all pipes by default. - * - * @see setAutoAck() - * - * @note ACK payloads are dynamic payloads. This function automatically - * enables dynamic payloads on pipes 0 & 1 by default. Call - * enableDynamicPayloads() to enable on all pipes (especially for RX nodes - * that use pipes other than pipe 0 to receive transmissions expecting - * responses with ACK payloads). - */ - void enableAckPayload(void); - - /** - * Disable custom payloads on the acknowledge packets - * - * @see enableAckPayload() - */ - void disableAckPayload(void); - - /** - * Enable dynamically-sized payloads - * - * This way you don't always have to send large packets just to send them - * once in a while. This enables dynamic payloads on ALL pipes. - * - */ - void enableDynamicPayloads(void); - - /** - * Disable dynamically-sized payloads - * - * This disables dynamic payloads on ALL pipes. Since Ack Payloads - * requires Dynamic Payloads, Ack Payloads are also disabled. - * If dynamic payloads are later re-enabled and ack payloads are desired - * then enableAckPayload() must be called again as well. - * - */ - void disableDynamicPayloads(void); - - /** - * Enable dynamic ACKs (single write multicast or unicast) for chosen - * messages. - * - * @note This function must be called once before using the multicast - * parameter for any functions that offer it. To use multicast behavior - * about all outgoing payloads (using pipe 0) or incoming payloads - * (concerning all RX pipes), use setAutoAck() - * - * @see - * - setAutoAck() for all pipes - * - setAutoAck(uint8_t, bool) for individual pipes - * - * @code - * radio.write(&data, 32, 1); // Sends a payload with no acknowledgement requested - * radio.write(&data, 32, 0); // Sends a payload using auto-retry/autoACK - * @endcode - */ - void enableDynamicAck(); - - /** - * Determine whether the hardware is an nRF24L01+ or not. - * - * @return true if the hardware is nRF24L01+ (or compatible) and false - * if its not. - */ - bool isPVariant(void); - - /** - * Enable or disable the auto-acknowledgement feature for all pipes. This - * feature is enabled by default. Auto-acknowledgement responds to every - * received payload with an empty ACK packet. These ACK packets get sent - * from the receiving radio back to the transmitting radio. To attach an - * ACK payload to a ACK packet, use writeAckPayload(). - * - * If this feature is disabled on a transmitting radio, then the - * transmitting radio will always report that the payload was received - * (even if it was not). Please remember that this feature's configuration - * needs to match for transmitting and receiving radios. - * - * @warning When using the `multicast` parameter to write(), this feature - * can be disabled for an individual payload. However, if this feature is - * disabled, then the `multicast` parameter will have no effect. - * - * @note If disabling auto-acknowledgment packets, the ACK payloads - * feature is also disabled as this feature is required to send ACK - * payloads. - * - * @see - * - write() - * - writeFast() - * - startFastWrite() - * - startWrite() - * - writeAckPayload() - * - * @param enable Whether to enable (true) or disable (false) the - * auto-acknowledgment feature for all pipes - */ - void setAutoAck(bool enable); - - /** - * Enable or disable the auto-acknowledgement feature for a specific pipe. - * This feature is enabled by default for all pipes. Auto-acknowledgement - * responds to every received payload with an empty ACK packet. These ACK - * packets get sent from the receiving radio back to the transmitting - * radio. To attach an ACK payload to a ACK packet, use writeAckPayload(). - * - * Pipe 0 is used for TX operations, which include sending ACK packets. If - * using this feature on both TX & RX nodes, then pipe 0 must have this - * feature enabled for the RX & TX operations. If this feature is disabled - * on a transmitting radio's pipe 0, then the transmitting radio will - * always report that the payload was received (even if it was not). - * Remember to also enable this feature for any pipe that is openly - * listening to a transmitting radio with this feature enabled. - * - * @warning If this feature is enabled for pipe 0, then the `multicast` - * parameter to write() can be used to disable this feature for an - * individual payload. However, if this feature is disabled for pipe 0, - * then the `multicast` parameter will have no effect. - * - * @note If disabling auto-acknowledgment packets on pipe 0, the ACK - * payloads feature is also disabled as this feature is required on pipe 0 - * to send ACK payloads. - * - * @see - * - write() - * - writeFast() - * - startFastWrite() - * - startWrite() - * - writeAckPayload() - * - enableAckPayload() - * - disableAckPayload() - * - * @param pipe Which pipe to configure. This number should be in range - * [0, 5]. - * @param enable Whether to enable (true) or disable (false) the - * auto-acknowledgment feature for the specified pipe - */ - void setAutoAck(uint8_t pipe, bool enable); - - /** - * Set Power Amplifier (PA) level and Low Noise Amplifier (LNA) state - * - * @param level The desired @ref PALevel as defined by @ref rf24_pa_dbm_e. - * @param lnaEnable Enable or Disable the LNA (Low Noise Amplifier) Gain. - * See table for Si24R1 modules below. @p lnaEnable only affects - * nRF24L01 modules with an LNA chip. - * - * | @p level (enum value) | nRF24L01<br>description | Si24R1<br>description when<br> @p lnaEnable = 1 | Si24R1<br>description when<br> @p lnaEnable = 0 | - * |:---------------------:|:-------:|:--------:|:-------:| - * | @ref RF24_PA_MIN (0) | -18 dBm | -6 dBm | -12 dBm | - * | @ref RF24_PA_LOW (1) | -12 dBm | -0 dBm | -4 dBm | - * | @ref RF24_PA_HIGH (2) | -6 dBm | 3 dBm | 1 dBm | - * | @ref RF24_PA_MAX (3) | 0 dBm | 7 dBm | 4 dBm | - * - * @note The getPALevel() function does not care what was passed @p lnaEnable parameter. - */ - void setPALevel(uint8_t level, bool lnaEnable = 1); - - /** - * Fetches the current @ref PALevel. - * - * @return One of the values defined by @ref rf24_pa_dbm_e. - * See tables in @ref rf24_pa_dbm_e or setPALevel() - */ - uint8_t getPALevel(void); - - /** - * Returns automatic retransmission count (ARC_CNT) - * - * Value resets with each new transmission. Allows roughly estimating signal strength. - * - * @return Returns values from 0 to 15. - */ - uint8_t getARC(void); - - /** - * Set the transmission @ref Datarate - * - * @warning setting @ref RF24_250KBPS will fail for non-plus modules (when - * isPVariant() returns false). - * - * @param speed Specify one of the following values (as defined by - * @ref rf24_datarate_e): - * | @p speed (enum value) | description | - * |:---------------------:|:------------:| - * | @ref RF24_1MBPS (0) | for 1 Mbps | - * | @ref RF24_2MBPS (1) | for 2 Mbps | - * | @ref RF24_250KBPS (2) | for 250 kbps | - * - * @return true if the change was successful - */ - bool setDataRate(rf24_datarate_e speed); - - /** - * Fetches the currently configured transmission @ref Datarate - * - * @return One of the values defined by @ref rf24_datarate_e. - * See table in @ref rf24_datarate_e or setDataRate() - */ - rf24_datarate_e getDataRate(void); - - /** - * Set the @ref CRCLength (in bits) - * - * CRC cannot be disabled if auto-ack is enabled - * @param length Specify one of the values (as defined by @ref rf24_crclength_e) - * | @p length (enum value) | description | - * |:--------------------------:|:------------------------------:| - * | @ref RF24_CRC_DISABLED (0) | to disable using CRC checksums | - * | @ref RF24_CRC_8 (1) | to use 8-bit checksums | - * | @ref RF24_CRC_16 (2) | to use 16-bit checksums | - */ - void setCRCLength(rf24_crclength_e length); - - /** - * Get the @ref CRCLength (in bits) - * - * CRC checking cannot be disabled if auto-ack is enabled - * @return One of the values defined by @ref rf24_crclength_e. - * See table in @ref rf24_crclength_e or setCRCLength() - */ - rf24_crclength_e getCRCLength(void); - - /** - * Disable CRC validation - * - * @warning CRC cannot be disabled if auto-ack/ESB is enabled. - */ - void disableCRC(void); - - /** - * - * The driver will delay for this duration when stopListening() is called - * - * When responding to payloads, faster devices like ARM(RPi) are much faster than Arduino: - * 1. Arduino sends data to RPi, switches to RX mode - * 2. The RPi receives the data, switches to TX mode and sends before the Arduino radio is in RX mode - * 3. If AutoACK is disabled, this can be set as low as 0. If AA/ESB enabled, set to 100uS minimum on RPi - * - * @warning If set to 0, ensure 130uS delay after stopListening() and before any sends - */ - uint32_t txDelay; - - /** - * - * On all devices but Linux and ATTiny, a small delay is added to the CSN toggling function - * - * This is intended to minimize the speed of SPI polling due to radio commands - * - * If using interrupts or timed requests, this can be set to 0 Default:5 - */ - uint32_t csDelay; - - /** - * Transmission of constant carrier wave with defined frequency and output power - * - * @param level Output power to use - * @param channel The channel to use - * - * @warning If isPVariant() returns true, then this function takes extra - * measures that alter some settings. These settings alterations include: - * - setAutoAck() to false (for all pipes) - * - setRetries() to retry `0` times with a delay of 250 microseconds - * - set the TX address to 5 bytes of `0xFF` - * - flush_tx() - * - load a 32 byte payload of `0xFF` into the TX FIFO's top level - * - disableCRC() - */ - void startConstCarrier(rf24_pa_dbm_e level, uint8_t channel); - - /** - * Stop transmission of constant wave and reset PLL and CONT registers - * - * @warning this function will powerDown() the radio per recommendation of - * datasheet. - * @note If isPVariant() returns true, please remember to re-configure the radio's settings - * @code - * // re-establish default settings - * setCRCLength(RF24_CRC_16); - * setAutoAck(true); - * setRetries(5, 15); - * @endcode - * @see startConstCarrier() - */ - void stopConstCarrier(void); - - /** - * @brief Open or close all data pipes. - * - * This function does not alter the addresses assigned to pipes. It is simply a - * convenience function that allows controlling all pipes at once. - * @param isEnabled `true` opens all pipes; `false` closes all pipes. - */ - void toggleAllPipes(bool isEnabled); - - /** - * @brief configure the RF_SETUP register in 1 transaction - * @param level This parameter is the same input as setPALevel()'s `level` parameter. - * See @ref rf24_pa_dbm_e enum for accepted values. - * @param speed This parameter is the same input as setDataRate()'s `speed` parameter. - * See @ref rf24_datarate_e enum for accepted values. - * @param lnaEnable This optional parameter is the same as setPALevel()'s `lnaEnable` - * optional parameter. Defaults to `true` (meaning LNA feature is enabled) when not specified. - */ - void setRadiation(uint8_t level, rf24_datarate_e speed, bool lnaEnable = true); - - /**@}*/ - /** - * @name Deprecated - * - * Methods provided for backwards compatibility. - */ - /**@{*/ - - /** - * Open a pipe for reading - * @deprecated For compatibility with old code only, see newer function - * openReadingPipe(). - * See our [migration guide](migration.md) to understand what you should update in your code. - * - * @note Pipes 1-5 should share the first 32 bits. - * Only the least significant byte should be unique, e.g. - * @code - * openReadingPipe(1, 0xF0F0F0F0AA); - * openReadingPipe(2, 0xF0F0F0F066); - * @endcode - * - * @warning - * @parblock - * Pipe 0 is also used by the writing pipe so should typically be avoided as a reading pipe. - * If used, the reading pipe 0 address needs to be restored at every call to startListening(). - * - * See http://maniacalbits.blogspot.com/2013/04/rf24-addressing-nrf24l01-radios-require.html - * @endparblock - * - * @param number Which pipe# to open, 0-5. - * @param address The 40-bit address of the pipe to open. - */ - void openReadingPipe(uint8_t number, uint64_t address); - - /** - * Open a pipe for writing - * @deprecated For compatibility with old code only, see newer function - * openWritingPipe(). - * See our [migration guide](migration.md) to understand what you should update in your code. - * - * Addresses are 40-bit hex values, e.g.: - * - * @code - * openWritingPipe(0xF0F0F0F0F0); - * @endcode - * - * @param address The 40-bit address of the pipe to open. - */ - void openWritingPipe(uint64_t address); - - /** - * Determine if an ack payload was received in the most recent call to - * write(). The regular available() can also be used. - * - * @deprecated For compatibility with old code only, see synonymous function available(). - * Use read() to retrieve the ack payload and getDynamicPayloadSize() to get the ACK payload size. - * See our [migration guide](migration.md) to understand what you should update in your code. - * - * @return True if an ack payload is available. - */ - bool isAckPayloadAvailable(void); - - /** - * This function is used to configure what events will trigger the Interrupt - * Request (IRQ) pin active LOW. - * - * @deprecated Use setStatusFlags() instead. - * See our [migration guide](migration.md) to understand what you should update in your code. - * - * The following events can be configured: - * 1. "data sent": This does not mean that the data transmitted was - * received, only that the attempt to send it was complete. - * 2. "data failed": This means the data being sent was not received. This - * event is only triggered when the auto-ack feature is enabled. - * 3. "data received": This means that data from a receiving payload has - * been loaded into the RX FIFO buffers. Remember that there are only 3 - * levels available in the RX FIFO buffers. - * - * By default, all events are configured to trigger the IRQ pin active LOW. - * When the IRQ pin is active, use clearStatusFlags() or getStatusFlags() to - * determine what events triggered it. - * Remember that calling clearStatusFlags() also clears these - * events' status, and the IRQ pin will then be reset to inactive HIGH. - * - * The following code configures the IRQ pin to only reflect the "data received" - * event: - * @code - * radio.maskIRQ(1, 1, 0); - * @endcode - * - * @param tx_ok `true` ignores the "data sent" event, `false` reflects the - * "data sent" event on the IRQ pin. - * @param tx_fail `true` ignores the "data failed" event, `false` reflects the - * "data failed" event on the IRQ pin. - * @param rx_ready `true` ignores the "data received" event, `false` reflects the - * "data received" event on the IRQ pin. - */ - void maskIRQ(bool tx_ok, bool tx_fail, bool rx_ready); - - /** - * Call this when you get an Interrupt Request (IRQ) to find out why - * - * This function describes what event triggered the IRQ pin to go active - * LOW and clears the status of all events. - * - * @deprecated Use clearStatusFlags() instead. - * See our [migration guide](migration.md) to understand what you should update in your code. - * - * @see setStatusFlags() - * - * @param[out] tx_ok The transmission attempt completed (TX_DS). This does - * not imply that the transmitted data was received by another radio, rather - * this only reports if the attempt to send was completed. This will - * always be `true` when the auto-ack feature is disabled. - * @param[out] tx_fail The transmission failed to be acknowledged, meaning - * too many retries (MAX_RT) were made while expecting an ACK packet. This - * event is only triggered when auto-ack feature is enabled. - * @param[out] rx_ready There is a newly received payload (RX_DR) saved to - * RX FIFO buffers. Remember that the RX FIFO can only hold up to 3 - * payloads. Once the RX FIFO is full, all further received transmissions - * are rejected until there is space to save new data in the RX FIFO - * buffers. - * - * @note This function expects no parameters in the python wrapper. - * Instead, this function returns a 3 item tuple describing the IRQ - * events' status. To use this function in the python wrapper: - * @code{.py} - * # let`radio` be the instantiated RF24 object - * tx_ds, tx_df, rx_dr = radio.whatHappened() # get IRQ status flags - * print("tx_ds: {}, tx_df: {}, rx_dr: {}".format(tx_ds, tx_df, rx_dr)) - * @endcode - */ - void whatHappened(bool& tx_ok, bool& tx_fail, bool& rx_ready); - - /** - * Similar to startListening(void) but changes the TX address. - * - * @deprecated Use stopListening(const uint8_t*) instead. - * See our [migration guide](migration.md) to understand what you should update in your code. - * - * @param txAddress The new TX address. - * This value will be cached for auto-ack purposes. - */ - void stopListening(const uint64_t txAddress); - -private: - /**@}*/ - /** - * @name Low-level internal interface. - * - * Protected methods that address the chip directly. Regular users cannot - * ever call these. They are documented for completeness and for developers who - * may want to extend this class. - */ - /**@{*/ - - /** - * initializing function specific to all constructors - * (regardless of constructor parameters) - */ - void _init_obj(); - - /** - * initialize radio by performing a soft reset. - * @warning This function assumes the SPI bus object's begin() method has been - * previously called. - */ - bool _init_radio(); - - /** - * initialize the GPIO pins - */ - bool _init_pins(); - - /** - * Set chip select pin - * - * Running SPI bus at PI_CLOCK_DIV2 so we don't waste time transferring data - * and best of all, we make use of the radio's FIFO buffers. A lower speed - * means we're less likely to effectively leverage our FIFOs and pay a higher - * AVR runtime cost as toll. - * - * @param mode HIGH to take this unit off the SPI bus, LOW to put it on - */ - void csn(bool mode); - - /** - * Write a chunk of data to a register - * - * @param reg Which register. Use constants from nRF24L01.h - * @param buf Where to get the data - * @param len How many bytes of data to transfer - * @return Nothing. Older versions of this function returned the status - * byte, but that it now saved to a private member on all SPI transactions. - */ - void write_register(uint8_t reg, const uint8_t* buf, uint8_t len); - - /** - * Write a single byte to a register - * - * @param reg Which register. Use constants from nRF24L01.h - * @param value The new value to write - * @return Nothing. Older versions of this function returned the status - * byte, but that it now saved to a private member on all SPI transactions. - */ - void write_register(uint8_t reg, uint8_t value); - - /** - * Write the transmit payload - * - * The size of data written is the fixed payload size, see getPayloadSize() - * - * @param buf Where to get the data - * @param len Number of bytes to be sent - * @param writeType Specify if individual payload should be acknowledged - * @return Nothing. Older versions of this function returned the status - * byte, but that it now saved to a private member on all SPI transactions. - */ - void write_payload(const void* buf, uint8_t len, const uint8_t writeType); - - /** - * Read the receive payload - * - * The size of data read is the fixed payload size, see getPayloadSize() - * - * @param buf Where to put the data - * @param len Maximum number of bytes to read - * @return Nothing. Older versions of this function returned the status - * byte, but that it now saved to a private member on all SPI transactions. - */ - void read_payload(void* buf, uint8_t len); - -#if !defined(MINIMAL) - - /** - * Decode and print the given 'observe_tx' value to stdout - * - * @param value The observe_tx value to print - * - * @warning Does nothing if stdout is not defined. See fdevopen in stdio.h - */ - void print_observe_tx(uint8_t value); - - /** - * Print the name and value of an 8-bit register to stdout - * - * Optionally it can print some quantity of successive - * registers on the same line. This is useful for printing a group - * of related registers on one line. - * - * @param name Name of the register - * @param reg Which register. Use constants from nRF24L01.h - * @param qty How many successive registers to print - */ - void print_byte_register(const char* name, uint8_t reg, uint8_t qty = 1); - - /** - * Print the name and value of a 40-bit address register to stdout - * - * Optionally it can print some quantity of successive - * registers on the same line. This is useful for printing a group - * of related registers on one line. - * - * @param name Name of the register - * @param reg Which register. Use constants from nRF24L01.h - * @param qty How many successive registers to print - */ - void print_address_register(const char* name, uint8_t reg, uint8_t qty = 1); - - /** - * Put the value of a 40-bit address register into a char array - * - * Optionally it can print some quantity of successive - * registers on the same line. This is useful for printing a group - * of related registers on one line. - * - * @param out_buffer Output buffer, char array - * @param reg Which register. Use constants from nRF24L01.h - * @param qty How many successive registers to print - * @return The total number of characters written to the given buffer. - */ - uint8_t sprintf_address_register(char* out_buffer, uint8_t reg, uint8_t qty = 1); -#endif - - /** - * Turn on or off the special features of the chip - * - * The chip has certain 'features' which are only available when the 'features' - * are enabled. See the datasheet for details. - */ - void toggle_features(void); - -#if defined(FAILURE_HANDLING) || defined(RF24_LINUX) - - void errNotify(void); - inline int8_t errHandler(bool* doRecovery); - inline void errHandler(); - - bool failureFlushed; -#endif - - /** - * @brief Manipulate the @ref Datarate and txDelay - * - * This is a helper function to setRadiation() and setDataRate() - * @param speed The desired data rate. - */ - inline uint8_t _data_rate_reg_value(rf24_datarate_e speed); - - /** - * @brief Manipulate the @ref PALevel - * - * This is a helper function to setRadiation() and setPALevel() - * @param level The desired @ref PALevel. - * @param lnaEnable Toggle the LNA feature. - */ - inline uint8_t _pa_level_reg_value(uint8_t level, bool lnaEnable); - - /**@}*/ -}; - -/** - * @example{lineno} examples/GettingStarted/GettingStarted.ino - * Written by [2bndy5](http://github.com/2bndy5) in 2020 - * - * A simple example of sending data from 1 nRF24L01 transceiver to another. - * - * This example was written to be used on 2 devices acting as "nodes". - * Use the Serial Monitor to change each node's behavior. - */ - -/** - * @example{lineno} examples/AcknowledgementPayloads/AcknowledgementPayloads.ino - * Written by [2bndy5](http://github.com/2bndy5) in 2020 - * - * A simple example of sending data from 1 nRF24L01 transceiver to another - * with Acknowledgement (ACK) payloads attached to ACK packets. - * - * This example was written to be used on 2 devices acting as "nodes". - * Use the Serial Monitor to change each node's behavior. - */ - -/** - * @example{lineno} examples/ManualAcknowledgements/ManualAcknowledgements.ino - * Written by [2bndy5](http://github.com/2bndy5) in 2020 - * - * A simple example of sending data from 1 nRF24L01 transceiver to another - * with manually transmitted (non-automatic) Acknowledgement (ACK) payloads. - * This example still uses ACK packets, but they have no payloads. Instead the - * acknowledging response is sent with `write()`. This tactic allows for more - * updated acknowledgement payload data, where actual ACK payloads' data are - * outdated by 1 transmission because they have to loaded before receiving a - * transmission. - * - * This example was written to be used on 2 devices acting as "nodes". - * Use the Serial Monitor to change each node's behavior. - */ - -/** - * @example{lineno} examples/StreamingData/StreamingData.ino - * Written by [2bndy5](http://github.com/2bndy5) in 2020 - * - * A simple example of streaming data from 1 nRF24L01 transceiver to another. - * - * This example was written to be used on 2 devices acting as "nodes". - * Use the Serial Monitor to change each node's behavior. - */ - -/** - * @example{lineno} examples/MulticeiverDemo/MulticeiverDemo.ino - * Written by [2bndy5](http://github.com/2bndy5) in 2020 - * - * A simple example of sending data from as many as 6 nRF24L01 transceivers to - * 1 receiving transceiver. This technique is trademarked by - * Nordic Semiconductors as "MultiCeiver". - * - * This example was written to be used on up to 6 devices acting as TX nodes & - * only 1 device acting as the RX node (that's a maximum of 7 devices). - * Use the Serial Monitor to change each node's behavior. - */ - -/** - * @example{lineno} examples/InterruptConfigure/InterruptConfigure.ino - * Written by [2bndy5](http://github.com/2bndy5) in 2020 - * - * This example uses Acknowledgement (ACK) payloads attached to ACK packets to - * demonstrate how the nRF24L01's IRQ (Interrupt Request) pin can be - * configured to detect when data is received, or when data has transmitted - * successfully, or when data has failed to transmit. - * - * This example was written to be used on 2 devices acting as "nodes". - * Use the Serial Monitor to change each node's behavior. - */ - -/** - * @example{lineno} examples/old_backups/GettingStarted_HandlingFailures/GettingStarted_HandlingFailures.ino - * Written by [TMRh20](http://github.com/TMRh20) in 2019 - * - * This example demonstrates the basic getting started functionality, but with - * failure handling for the radio chip. Addresses random radio failures etc, - * potentially due to loose wiring on breadboards etc. - */ - -/** - * @example{lineno} examples/old_backups/TransferTimeouts/TransferTimeouts.ino - * Written by [TMRh20](https://github.com/TMRh20) - * - * This example demonstrates the use of and extended timeout period and - * auto-retries/auto-reUse to increase reliability in noisy or low signal scenarios. - * - * Write this sketch to two different nodes. Put one of the nodes into 'transmit' - * mode by connecting with the serial monitor and sending a 'T'. The data <br> - * transfer will begin, with the receiver displaying the payload count and the - * data transfer rate. - */ - -/** - * @example{lineno} examples/old_backups/pingpair_irq/pingpair_irq.ino - * Updated by [TMRh20](https://github.com/TMRh20) - * - * This is an example of how to user interrupts to interact with the radio, and a demonstration - * of how to use them to sleep when receiving, and not miss any payloads.<br> - * The pingpair_sleepy example expands on sleep functionality with a timed sleep option for the transmitter. - * Sleep functionality is built directly into my fork of the RF24Network library<br> - */ - -/** - * @example{lineno} examples/old_backups/pingpair_sleepy/pingpair_sleepy.ino - * Updated by [TMRh20](https://github.com/TMRh20) - * - * This is an example of how to use the RF24 class to create a battery- - * efficient system. It is just like the GettingStarted_CallResponse example, but the<br> - * ping node powers down the radio and sleeps the MCU after every - * ping/pong cycle, and the receiver sleeps between payloads. <br> - */ - -/** - * @example{lineno} examples/rf24_ATTiny/rf24ping85/rf24ping85.ino - * <b>2014 Contribution by [tong67](https://github.com/tong67)</b><br> - * Updated 2020 by [2bndy5](http://github.com/2bndy5) for the - * [SpenceKonde ATTinyCore](https://github.com/SpenceKonde/ATTinyCore)<br> - * The RF24 library uses the [ATTinyCore by - * SpenceKonde](https://github.com/SpenceKonde/ATTinyCore) - * - * This sketch is a duplicate of the ManualAcknowledgements.ino example - * (without all the Serial input/output code), and it demonstrates - * a ATTiny25/45/85 or ATTiny24/44/84 driving the nRF24L01 transceiver using - * the RF24 class to communicate with another node. - * - * A simple example of sending data from 1 nRF24L01 transceiver to another - * with manually transmitted (non-automatic) Acknowledgement (ACK) payloads. - * This example still uses ACK packets, but they have no payloads. Instead the - * acknowledging response is sent with `write()`. This tactic allows for more - * updated acknowledgement payload data, where actual ACK payloads' data are - * outdated by 1 transmission because they have to loaded before receiving a - * transmission. - * - * This example was written to be used on 2 devices acting as "nodes". - */ - -/** - * @example{lineno} examples/rf24_ATTiny/timingSearch3pin/timingSearch3pin.ino - * <b>2014 Contribution by [tong67](https://github.com/tong67)</b><br> - * Updated 2020 by [2bndy5](http://github.com/2bndy5) for the - * [SpenceKonde ATTinyCore](https://github.com/SpenceKonde/ATTinyCore)<br> - * The RF24 library uses the [ATTinyCore by - * SpenceKonde](https://github.com/SpenceKonde/ATTinyCore) - * - * This sketch can be used to determine the best settle time values to use for - * RF24::csDelay in RF24::csn() (private function). - * @see RF24::csDelay - * - * The settle time values used here are 100/20. However, these values depend - * on the actual used RC combination and voltage drop by LED. The - * intermediate results are written to TX (PB3, pin 2 -- using Serial). - * - * For schematic details, see introductory comment block in the rf24ping85.ino sketch. - */ - -/** - * @example{lineno} examples/old_backups/pingpair_dyn/pingpair_dyn.ino - * - * This is an example of how to use payloads of a varying (dynamic) size on Arduino. - */ - -/** - * @example{lineno} examples_linux/getting_started.py - * Written by [2bndy5](http://github.com/2bndy5) in 2020 - * - * This is a simple example of using the RF24 class on a Raspberry Pi. - * - * Remember to install the [Python wrapper](python_wrapper.md), then - * navigate to the "RF24/examples_linux" folder. - * <br>To run this example, enter - * @code{.sh}python3 getting_started.py @endcode and follow the prompts. - * - * @note this example requires python v3.7 or newer because it measures - * transmission time with `time.monotonic_ns()`. - */ - -/** - * @example{lineno} examples_linux/acknowledgement_payloads.py - * Written by [2bndy5](http://github.com/2bndy5) in 2020 - * - * This is a simple example of using the RF24 class on a Raspberry Pi to - * transmit and retrieve custom automatic acknowledgment payloads. - * - * Remember to install the [Python wrapper](python_wrapper.md), then - * navigate to the "RF24/examples_linux" folder. - * <br>To run this example, enter - * @code{.sh}python3 acknowledgement_payloads.py @endcode and follow the prompts. - * - * @note this example requires python v3.7 or newer because it measures - * transmission time with `time.monotonic_ns()`. - */ - -/** - * @example{lineno} examples_linux/manual_acknowledgements.py - * Written by [2bndy5](http://github.com/2bndy5) in 2020 - * - * This is a simple example of using the RF24 class on a Raspberry Pi to - * transmit and respond with acknowledgment (ACK) transmissions. Notice that - * the auto-ack feature is enabled, but this example doesn't use automatic ACK - * payloads because automatic ACK payloads' data will always be outdated by 1 - * transmission. Instead, this example uses a call and response paradigm. - * - * Remember to install the [Python wrapper](python_wrapper.md), then - * navigate to the "RF24/examples_linux" folder. - * <br>To run this example, enter - * @code{.sh}python3 manual_acknowledgements.py @endcode and follow the prompts. - * - * @note this example requires python v3.7 or newer because it measures - * transmission time with `time.monotonic_ns()`. - */ - -/** - * @example{lineno} examples_linux/streaming_data.py - * Written by [2bndy5](http://github.com/2bndy5) in 2020 - * - * This is a simple example of using the RF24 class on a Raspberry Pi for - * streaming multiple payloads. - * - * Remember to install the [Python wrapper](python_wrapper.md), then - * navigate to the "RF24/examples_linux" folder. - * <br>To run this example, enter - * @code{.sh}python3 streaming_data.py @endcode and follow the prompts. - * - * @note this example requires python v3.7 or newer because it measures - * transmission time with `time.monotonic_ns()`. - */ - -/** - * @example{lineno} examples_linux/interrupt_configure.py - * Written by [2bndy5](http://github.com/2bndy5) in 2020 - * - * This is a simple example of using the RF24 class on a Raspberry Pi to - * detecting (and verifying) the IRQ (interrupt) pin on the nRF24L01. - * - * Remember to install the [Python wrapper](python_wrapper.md), then - * navigate to the "RF24/examples_linux" folder. - * <br>To run this example, enter - * @code{.sh}python3 interrupt_configure.py @endcode and follow the prompts. - * - * @note this example requires python v3.7 or newer because it measures - * transmission time with `time.monotonic_ns()`. - */ - -/** - * @example{lineno} examples_linux/multiceiver_demo.py - * Written by [2bndy5](http://github.com/2bndy5) in 2020 - * - * This is a simple example of using the RF24 class on a Raspberry Pi for - * using 1 nRF24L01 to receive data from up to 6 other transceivers. This - * technique is called "multiceiver" in the datasheet. - * - * Remember to install the [Python wrapper](python_wrapper.md), then - * navigate to the "RF24/examples_linux" folder. - * <br>To run this example, enter - * @code{.sh}python3 multiceiver_demo.py @endcode and follow the prompts. - * - * @note this example requires python v3.7 or newer because it measures - * transmission time with `time.monotonic_ns()`. - */ - -/** - * @example{lineno} examples_linux/scanner.cpp - * - * Example to detect interference on the various channels available. - * This is a good diagnostic tool to check whether you're picking a - * good channel for your application. - * - * Inspired by cpixip. - * See http://arduino.cc/forum/index.php/topic,54795.0.html - * - * Use ctrl+C to exit - */ - -/** - * @example{lineno} examples/scanner/scanner.ino - * - * Example to detect interference on the various channels available. - * This is a good diagnostic tool to check whether you're picking a - * good channel for your application. - * - * Inspired by cpixip. - * See http://arduino.cc/forum/index.php/topic,54795.0.html - */ - -/** - * @example{lineno} examples_linux/gettingstarted.cpp - * Written by [2bndy5](http://github.com/2bndy5) in 2020 - * - * A simple example of sending data from 1 nRF24L01 transceiver to another. - * - * This example was written * This example was written to be used on up to 6 devices acting as TX nodes & - * only 1 device acting as the RX node (that's a maximum of 7 devices). - acting as "nodes". - * Use `ctrl+c` to quit at any time. - */ - -/** - * @example{lineno} examples_linux/acknowledgementPayloads.cpp - * Written by [2bndy5](http://github.com/2bndy5) in 2020 - * - * A simple example of sending data from 1 nRF24L01 transceiver to another - * with Acknowledgement (ACK) payloads attached to ACK packets. - * - * This example was written to be used on 2 devices acting as "nodes". - * Use `ctrl+c` to quit at any time. - */ - -/** - * @example{lineno} examples_linux/manualAcknowledgements.cpp - * Written by [2bndy5](http://github.com/2bndy5) in 2020 - * - * A simple example of sending data from 1 nRF24L01 transceiver to another - * with manually transmitted (non-automatic) Acknowledgement (ACK) payloads. - * This example still uses ACK packets, but they have no payloads. Instead the - * acknowledging response is sent with `write()`. This tactic allows for more - * updated acknowledgement payload data, where actual ACK payloads' data are - * outdated by 1 transmission because they have to loaded before receiving a - * transmission. - * - * This example was written to be used on 2 devices acting as "nodes". - * Use `ctrl+c` to quit at any time. - */ - -/** - * @example{lineno} examples_linux/streamingData.cpp - * Written by [2bndy5](http://github.com/2bndy5) in 2020 - * - * A simple example of sending data from 1 nRF24L01 transceiver to another. - * - * This example was written to be used on 2 devices acting as "nodes". - * Use `ctrl+c` to quit at any time. - */ - -/** - * @example{lineno} examples_linux/multiceiverDemo.cpp - * Written by [2bndy5](http://github.com/2bndy5) in 2020 - * - * A simple example of sending data from as many as 6 nRF24L01 transceivers to - * 1 receiving transceiver. This technique is trademarked by - * Nordic Semiconductors as "MultiCeiver". - * - * This example was written to be used on up to 6 devices acting as TX nodes & - * only 1 device acting as the RX node (that's a maximum of 7 devices). - * Use `ctrl+c` to quit at any time. - */ - -#endif // RF24_H_ |