UART TRANSFER BETWEEN TWO ARDUINO UNO R3
void setup() { // set push button pin as input pinMode(8, INPUT_PULLUP); pinMode(13, OUTPUT); digitalWrite(13, LOW); Serial.begin(9600); } void loop() { if (Serial.available()) { // read one byte from serial buffer and save to data_rcvd char data_rcvd = Serial.read(); if (data_rcvd == '1') { digitalWrite(13, HIGH); } if (data_rcvd == '0') { digitalWrite(13, LOW); // switch LED Off } } if (digitalRead(8) == HIGH) { // send the char '0' to serial if button is not pressed. Serial.write('0'); } else { // send the char '1' to serial if button is pressed. Serial.wr...
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