From f34b1e2fbd94bcc8d0ee2e2e2e43e214d0b329a1 Mon Sep 17 00:00:00 2001
From: krolyxon <me@krolyxon.com>
Date: Mon, 11 May 2026 14:01:44 +0530
Subject: Migrate to PlatformIO

Now since i have been able to make PSRAM working with platformio, i
don't have to use this shitty Arduino-IDE anymore which does not even
allow me to use subfolders like a normal programmer would do
---
 src/rf/cc1101.cpp | 205 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 205 insertions(+)
 create mode 100644 src/rf/cc1101.cpp

(limited to 'src/rf/cc1101.cpp')

diff --git a/src/rf/cc1101.cpp b/src/rf/cc1101.cpp
new file mode 100644
index 0000000..603a0d7
--- /dev/null
+++ b/src/rf/cc1101.cpp
@@ -0,0 +1,205 @@
+#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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