IR Recieve

ESPMegaPRO-OS-SDK/lib/ESPMegaPRO/IRReceiver.cpp

@@ -0,0 +1,45 @@
+#include <IRReceiver.hpp>
+#include <functional>
+
+volatile unsigned int IRReceiver::irBufferPtr = 0;
+volatile unsigned int IRReceiver::irBuffer[1000];
+uint8_t IRReceiver::pin;
+
+void IRReceiver::begin(uint8_t pin) {
+    IRReceiver::pin = pin;
+    IRReceiver::irBufferPtr = 0;
+}
+
+void IRReceiver::start_long_receive() {
+    irBufferPtr = 0;
+    attachInterrupt(digitalPinToInterrupt(pin), IRReceiver::handleInterrupt, CHANGE);
+}
+
+ir_data_t IRReceiver::end_long_receive() {
+    detachInterrupt(digitalPinToInterrupt(pin));
+    // The data in the array is the time between each transition, so we need to convert it to the time of each transition
+    ir_data_t data;
+    const size_t size = irBufferPtr-1;
+    Serial.println("Allocating memory");
+    data.data = (unsigned int*)calloc(size, sizeof(unsigned int));
+    if (data.data == nullptr) {
+        Serial.println("Failed to allocate memory");
+        data.size = 0;
+        return data;
+    }
+    Serial.println("Copying data");
+    // The data in the array is the time between each transition, so we need to convert it to the time of each transition
+    for (size_t i = 1; i <= size; i++) {
+        Serial.printf("Copying data at index %d\n", i);
+        data.data[i-1] = irBuffer[i] - irBuffer[i-1];
+    }
+    //memcpy(data.data, (const unsigned int*)irBuffer, (size)*sizeof(unsigned int));
+    Serial.println("Done");
+    data.size = irBufferPtr;
+    return data;
+}
+
+void IRAM_ATTR IRReceiver::handleInterrupt() {
+    if (irBufferPtr > 1000) return; //full buffer = bad data
+    irBuffer[irBufferPtr++] = micros(); //just continually record the time-stamp of signal transitions  
+}