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I am trying to connect my Pi 4 running Rasbian 2020 to an Arduino, after making all the connections I try to communicate with the Arduino by using Minicom. However, Minicom doe not respond to anything I am typing nor any of the commands such as ctrl + a.

I am running Minicom with the following command: minicom -b 9600 -o -D /dev/ttyAMA0

This is the code I have running on the Arduino:

byte number = 0;

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


void loop(){
if (Serial.available()) {
number = Serial.read();
Serial.print("character recieved: ");
Serial.println(number, DEC);
}
}
Beulah Akindele
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1 Answers1

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/dev/ttyAMA0 is connected to Bluetooth so this won't work.

See How do I make serial work on the Raspberry Pi3 or later

It IS POSSIBLE to disable Bluetooth but this is unnecessary to use serial. In the unlikely event you really need a fully featured UART the Pi4 has another 4.

There is no such thing as "Rasbian 2020"

Milliways
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