crazy sketti
New member
I've got a board which requires communication between a Teensy 4.1 and a Teensy 4.0. I decided to use Serial to achieve this, but am having trouble with them communicating. Each board has to be able to communicate with the other at the press of a button. The 4.1 should be able to send bytes (or strings) of data to the 4.0, and the 4.0 needs to send data to the 4.1 (strings), each when a button is pressed. I've attached a simplified code for each board. Is there a certain library I have to use to accomplish this, or is communication only 1 way (master/slave only)?
Code:
//Teensy 4.0 Code
#include <Bounce.h>
const int HomeEntpin = 25;
String sendchoice = "Teensy 4.0 command received";
int recchoice = 0;
Bounce H = Bounce(HomeEntpin, 10);
#include <Bounce.h>
void setup() {
Serial.begin(9600);
Serial1.begin(9600);
pinMode(HomeEntpin, INPUT);
}
void loop() {
if (H.update()) {
if (H.fallingEdge()) {
Serial.println("A pressed");
Serial1.println(sendchoice);
Serial.println("String sent");
}
}
if (Serial2.available() > 0) {
Serial.println("Serial 1 Read");
recchoice = Serial1.read();
Serial.println(recchoice);
delay(100);
}
}
Code:
//Teensy 4.1 code
#include <Bounce.h>
const int Apin = 20;
Bounce A = Bounce(Apin,10);
String recchoice = "";
int sendchoice = 1;
void setup() {
Serial.begin(9600);
Serial2.begin(9600);
pinMode(Apin, INPUT);
}
void loop() {
if (A.update()) {
if (A.fallingEdge()) {
Serial.println("A pressed");
Serial2.write(sendchoice);
Serial.println("Int 1 sent");
}
}
if (Serial2.available() > 0) {
Serial.println("Serial 2 Read");
recchoice = Serial2.read();
Serial.println(recchoice);
delay(100);
}
}