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#include <Arduino.h>
#include "../libs/ELECHOUSE_CC1101_SRC_DRV.h"
#include "cc1101.h"
#include "../config.h"
#include "SPI.h"
// ===== CONFIG =====
#define RAW_BUF_MAX 512
// ===== STATE =====
static bool cc1101Inited = false;
// ===== CAPTURE STATE =====
volatile unsigned long captureBuffer[RAW_BUF_MAX];
volatile int pulseIndex = 0;
volatile unsigned long lastEdgeTime = 0;
volatile bool capturing = false;
// ===== RF SETTINGS =====
float currentFreq = 433.92;
float dataRate = 3.79372;
float deviation = 0.0;
float rxBW = 325.0;
int powerLevel = 10;
// ===== ISR =====
void IRAM_ATTR pulseISR()
{
unsigned long now = micros();
if (!capturing) return;
if (pulseIndex >= RAW_BUF_MAX) return;
unsigned long duration = now - lastEdgeTime;
if (duration < 150) return;
captureBuffer[pulseIndex++] = duration;
lastEdgeTime = now;
}
// ===== OOK SETUP =====
void setupOOKMode()
{
ELECHOUSE_cc1101.SetRx();
ELECHOUSE_cc1101.setMHZ(currentFreq);
ELECHOUSE_cc1101.setModulation(2); // ASK/OOK
ELECHOUSE_cc1101.setDRate(dataRate);
ELECHOUSE_cc1101.setDeviation(0);
ELECHOUSE_cc1101.setRxBW(rxBW);
ELECHOUSE_cc1101.setSyncMode(0);
ELECHOUSE_cc1101.setPA(powerLevel);
}
// ===== INIT (LAZY, SAFE) =====
// ================= CC1101 INIT =================
bool initCC1101()
{
Serial.println();
Serial.println("===== CC1101 INIT =====");
// ===== SPI =====
SPI.begin(
cc1101_SCK,
cc1101_MISO,
cc1101_MOSI,
CC1101_CS
);
pinMode(CC1101_CS, OUTPUT);
digitalWrite(CC1101_CS, HIGH);
delay(100);
// ===== GDO =====
ELECHOUSE_cc1101.setGDO(
CC1101_GDO0,
-1
);
ELECHOUSE_cc1101.setSpiPin(
cc1101_SCK,
cc1101_MISO,
cc1101_MOSI,
CC1101_CS
);
// ===== DETECT =====
Serial.println("Checking chip...");
if (!ELECHOUSE_cc1101.getCC1101())
{
Serial.println("❌ CC1101 NOT FOUND");
return false;
}
Serial.println("✅ CC1101 FOUND");
// ===== IMPORTANT =====
// DO NOT CALL Init()
// it freezes on some ESP32-S3 setups
// ===== MANUAL CONFIG =====
ELECHOUSE_cc1101.setMHZ(currentFreq);
// 2 = ASK/OOK
ELECHOUSE_cc1101.setModulation(2);
ELECHOUSE_cc1101.setDRate(dataRate);
ELECHOUSE_cc1101.setRxBW(rxBW);
ELECHOUSE_cc1101.setDeviation(0);
// disable sync requirement
ELECHOUSE_cc1101.setSyncMode(0);
ELECHOUSE_cc1101.setPA(powerLevel);
// async serial mode
ELECHOUSE_cc1101.setCCMode(0);
// enter RX
ELECHOUSE_cc1101.SetRx();
pinMode(CC1101_GDO0, INPUT);
Serial.println("✅ RX MODE READY");
cc1101Inited = true;
return true;
}
// ===== CAPTURE CONTROL =====
void startCapture()
{
pulseIndex = 0;
capturing = true;
lastEdgeTime = micros();
attachInterrupt(
digitalPinToInterrupt(CC1101_GDO0),
pulseISR,
CHANGE
);
Serial.println("Looking for RF... ");
}
bool isCC1101Ready() {
return cc1101Inited;
}
void stopCapture()
{
capturing = false;
detachInterrupt(digitalPinToInterrupt(CC1101_GDO0));
Serial.println("Capture stopped");
}
// ===== DEBUG PRINT =====
void printCapture()
{
Serial.println("Captured pulses:");
for (int i = 0; i < pulseIndex; i++)
{
Serial.println(captureBuffer[i]);
}
}
// ================= REPLAY =================
void replaySignal()
{
Serial.println();
Serial.println("Replaying signal...");
stopCapture();
ELECHOUSE_cc1101.SetTx();
pinMode(CC1101_GDO0, OUTPUT);
for (int i = 0; i < pulseIndex; i++)
{
digitalWrite(
CC1101_GDO0,
(i % 2 == 0) ? HIGH : LOW
);
delayMicroseconds(captureBuffer[i]);
}
digitalWrite(CC1101_GDO0, LOW);
ELECHOUSE_cc1101.SetRx();
pinMode(CC1101_GDO0, INPUT);
Serial.println("Replay complete");
}
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