Ardiuno Comm

main.cpp

//maps pin => interrput number
const int INTMAP[] = {-1, -1, 0, 1, -1, -1};

const int COM_SendPin = 2;
const int COM_RecPin = 3;
const int COM_Timing = 6;
const int COM_HalfTiming = 3;

void COM_send(uint8_t b) {
	digitalWrite(COM_SendPin, 1);
	delayMicroseconds(COM_Timing);
	uint8_t checkSum = 0;
	for (int digit = 0; digit < 8; ++digit) {
		uint8_t value = (b >> digit) & 0x1;
		checkSum ^= value;
		digitalWrite(COM_SendPin, value);
		delayMicroseconds(COM_Timing);
	}
	digitalWrite(COM_SendPin, checkSum);
	delayMicroseconds(COM_Timing);
	digitalWrite(COM_SendPin, 1);
	delayMicroseconds(COM_Timing);
	digitalWrite(COM_SendPin, 0);
	delayMicroseconds(COM_HalfTiming);
}

// volatile bool COM_Recieving = false;
uint8_t COM_recieve() {
	while (!digitalRead(COM_RecPin));
	//wait until the start bit is done
	delayMicroseconds(COM_Timing);
	//read bits
	uint8_t number = 0;
	uint8_t checkSum = 0;
	for (int digit = 0; digit < 8; ++digit) {
		delayMicroseconds(COM_HalfTiming);
		uint8_t value = (digitalRead(COM_RecPin) ? 0x1 : 0x0);
		checkSum ^= value;
		number = (number << 1) | value;
		delayMicroseconds(COM_HalfTiming);
	}
	delayMicroseconds(COM_HalfTiming);
	uint8_t checkSumCheck = (digitalRead(COM_RecPin) ? 0x1 : 0x0);
	delayMicroseconds(COM_HalfTiming);
	if (checkSumCheck == checkSum) {
		Serial.print("Sucess: ");
		Serial.println(number, BIN);
	} else {
		Serial.print("Failed: ");
		Serial.println(number, BIN);
	}
	delayMicroseconds(COM_Timing + COM_HalfTiming);
}

void setup() {
	Serial.begin(9600);
	pinMode(COM_RecPin, INPUT);
	pinMode(COM_SendPin, OUTPUT);
}

void loop() {
	
}