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