| 1 | #include <Arduino.h> |
| 2 | #include "../libs/ELECHOUSE_CC1101_SRC_DRV.h" |
| 3 | #include "cc1101.h" |
| 4 | #include "../config.h" |
| 5 | #include "SPI.h" |
| 6 | |
| 7 | // ===== CONFIG ===== |
| 8 | #define RAW_BUF_MAX 512 |
| 9 | |
| 10 | // ===== STATE ===== |
| 11 | static bool cc1101Inited = false; |
| 12 | |
| 13 | // ===== CAPTURE STATE ===== |
| 14 | volatile unsigned long captureBuffer[RAW_BUF_MAX]; |
| 15 | volatile int pulseIndex = 0; |
| 16 | volatile unsigned long lastEdgeTime = 0; |
| 17 | volatile bool capturing = false; |
| 18 | |
| 19 | // ===== RF SETTINGS ===== |
| 20 | float currentFreq = 433.92; |
| 21 | float dataRate = 3.79372; |
| 22 | float deviation = 0.0; |
| 23 | float rxBW = 325.0; |
| 24 | int powerLevel = 10; |
| 25 | |
| 26 | // ===== ISR ===== |
| 27 | void IRAM_ATTR pulseISR() |
| 28 | { |
| 29 | unsigned long now = micros(); |
| 30 | |
| 31 | if (!capturing) return; |
| 32 | if (pulseIndex >= RAW_BUF_MAX) return; |
| 33 | |
| 34 | unsigned long duration = now - lastEdgeTime; |
| 35 | |
| 36 | if (duration < 150) return; |
| 37 | |
| 38 | captureBuffer[pulseIndex++] = duration; |
| 39 | lastEdgeTime = now; |
| 40 | } |
| 41 | |
| 42 | // ===== OOK SETUP ===== |
| 43 | void setupOOKMode() |
| 44 | { |
| 45 | ELECHOUSE_cc1101.SetRx(); |
| 46 | ELECHOUSE_cc1101.setMHZ(currentFreq); |
| 47 | |
| 48 | ELECHOUSE_cc1101.setModulation(2); // ASK/OOK |
| 49 | ELECHOUSE_cc1101.setDRate(dataRate); |
| 50 | ELECHOUSE_cc1101.setDeviation(0); |
| 51 | ELECHOUSE_cc1101.setRxBW(rxBW); |
| 52 | ELECHOUSE_cc1101.setSyncMode(0); |
| 53 | ELECHOUSE_cc1101.setPA(powerLevel); |
| 54 | } |
| 55 | |
| 56 | // ===== INIT (LAZY, SAFE) ===== |
| 57 | // ================= CC1101 INIT ================= |
| 58 | bool initCC1101() |
| 59 | { |
| 60 | Serial.println(); |
| 61 | Serial.println("===== CC1101 INIT ====="); |
| 62 | |
| 63 | // ===== SPI ===== |
| 64 | SPI.begin( |
| 65 | cc1101_SCK, |
| 66 | cc1101_MISO, |
| 67 | cc1101_MOSI, |
| 68 | CC1101_CS |
| 69 | ); |
| 70 | |
| 71 | pinMode(CC1101_CS, OUTPUT); |
| 72 | digitalWrite(CC1101_CS, HIGH); |
| 73 | |
| 74 | delay(100); |
| 75 | |
| 76 | // ===== GDO ===== |
| 77 | ELECHOUSE_cc1101.setGDO( |
| 78 | CC1101_GDO0, |
| 79 | -1 |
| 80 | ); |
| 81 | |
| 82 | ELECHOUSE_cc1101.setSpiPin( |
| 83 | cc1101_SCK, |
| 84 | cc1101_MISO, |
| 85 | cc1101_MOSI, |
| 86 | CC1101_CS |
| 87 | ); |
| 88 | |
| 89 | // ===== DETECT ===== |
| 90 | Serial.println("Checking chip..."); |
| 91 | |
| 92 | if (!ELECHOUSE_cc1101.getCC1101()) |
| 93 | { |
| 94 | Serial.println("❌ CC1101 NOT FOUND"); |
| 95 | return false; |
| 96 | } |
| 97 | |
| 98 | Serial.println("✅ CC1101 FOUND"); |
| 99 | |
| 100 | // ===== IMPORTANT ===== |
| 101 | // DO NOT CALL Init() |
| 102 | // it freezes on some ESP32-S3 setups |
| 103 | |
| 104 | // ===== MANUAL CONFIG ===== |
| 105 | ELECHOUSE_cc1101.setMHZ(currentFreq); |
| 106 | |
| 107 | // 2 = ASK/OOK |
| 108 | ELECHOUSE_cc1101.setModulation(2); |
| 109 | |
| 110 | ELECHOUSE_cc1101.setDRate(dataRate); |
| 111 | |
| 112 | ELECHOUSE_cc1101.setRxBW(rxBW); |
| 113 | |
| 114 | ELECHOUSE_cc1101.setDeviation(0); |
| 115 | |
| 116 | // disable sync requirement |
| 117 | ELECHOUSE_cc1101.setSyncMode(0); |
| 118 | |
| 119 | ELECHOUSE_cc1101.setPA(powerLevel); |
| 120 | |
| 121 | // async serial mode |
| 122 | ELECHOUSE_cc1101.setCCMode(0); |
| 123 | |
| 124 | // enter RX |
| 125 | ELECHOUSE_cc1101.SetRx(); |
| 126 | |
| 127 | pinMode(CC1101_GDO0, INPUT); |
| 128 | |
| 129 | Serial.println("✅ RX MODE READY"); |
| 130 | |
| 131 | cc1101Inited = true; |
| 132 | return true; |
| 133 | } |
| 134 | // ===== CAPTURE CONTROL ===== |
| 135 | void startCapture() |
| 136 | { |
| 137 | pulseIndex = 0; |
| 138 | capturing = true; |
| 139 | lastEdgeTime = micros(); |
| 140 | |
| 141 | attachInterrupt( |
| 142 | digitalPinToInterrupt(CC1101_GDO0), |
| 143 | pulseISR, |
| 144 | CHANGE |
| 145 | ); |
| 146 | |
| 147 | Serial.println("Looking for RF... "); |
| 148 | } |
| 149 | |
| 150 | bool isCC1101Ready() { |
| 151 | return cc1101Inited; |
| 152 | } |
| 153 | |
| 154 | void stopCapture() |
| 155 | { |
| 156 | capturing = false; |
| 157 | |
| 158 | detachInterrupt(digitalPinToInterrupt(CC1101_GDO0)); |
| 159 | |
| 160 | Serial.println("Capture stopped"); |
| 161 | } |
| 162 | |
| 163 | // ===== DEBUG PRINT ===== |
| 164 | void printCapture() |
| 165 | { |
| 166 | Serial.println("Captured pulses:"); |
| 167 | |
| 168 | for (int i = 0; i < pulseIndex; i++) |
| 169 | { |
| 170 | Serial.println(captureBuffer[i]); |
| 171 | } |
| 172 | } |
| 173 | |
| 174 | |
| 175 | // ================= REPLAY ================= |
| 176 | void replaySignal() |
| 177 | { |
| 178 | Serial.println(); |
| 179 | Serial.println("Replaying signal..."); |
| 180 | |
| 181 | stopCapture(); |
| 182 | |
| 183 | ELECHOUSE_cc1101.SetTx(); |
| 184 | |
| 185 | pinMode(CC1101_GDO0, OUTPUT); |
| 186 | |
| 187 | for (int i = 0; i < pulseIndex; i++) |
| 188 | { |
| 189 | digitalWrite( |
| 190 | CC1101_GDO0, |
| 191 | (i % 2 == 0) ? HIGH : LOW |
| 192 | ); |
| 193 | |
| 194 | delayMicroseconds(captureBuffer[i]); |
| 195 | } |
| 196 | |
| 197 | digitalWrite(CC1101_GDO0, LOW); |
| 198 | |
| 199 | ELECHOUSE_cc1101.SetRx(); |
| 200 | |
| 201 | pinMode(CC1101_GDO0, INPUT); |
| 202 | |
| 203 | Serial.println("Replay complete"); |
| 204 | } |
| 205 | |