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Networking and Communications

This week, we did some experiments on communicating between boards via TTL protocal. Documented by Darren Chan

Experiment1 - USB-TTL -> HelloBoard

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void setup() {
Serial.begin(9600);
Serial1.begin(9600);
}

void loop() {
Serial.println("Hello Serial");
Serial1.println("Hello Serial1");
delay(1000);
}

Experiment2 - HelloBoard -> USB-TTL

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void setup() {
Serial.begin(9600);
Serial1.begin(9600);
}

void loop() {
  // put your main code here, to run repeatedly:
  if (Serial.available()) {      // If anything comes in Serial (USB),
    Serial1.write(Serial.read());   // read it and send it out Serial1 (pins 0 & 1)
  }

  if (Serial1.available()) {     // If anything comes in Serial1 (pins 0 & 1)
    Serial.write(Serial1.read());   // read it and send it out Serial (USB)
  }
}

Experiment3 - HelloBoard <-> Arduino MEGA 2560

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void setup() {
  Serial1.begin(9600);
}

void loop() {
  if (Serial1.available()) {
    //if letter 'Q' received, send back 'A'
    if (Serial1.read() == 'Q')
      Serial1.write('A');
  }
}
C++
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void setup() {
  Serial.begin(9600);
  Serial1.begin(9600);
}

void loop() {
  Serial1.write('Q');
  delay(500);
  if (Serial1.available()) {
    Serial.write(Serial1.read());
  }
}

Downloads

SAMD11C_Serial_Test.zip Communication_Test_MEGA.zip SAMD11C_Serial_SelfLoop.zip Communication_Test_SAMD11C.zip

Last update: May 3, 2022