Serial monitor always prints null (macOS)

PlatformIO IDE
2

Replace the code with the most simple

#include <Arduino.h>
void setup() {
  Serial.begin(115200);
  Serial.println("Start");
}

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

Does the issue still occur?

If notyes, does adding the two monitor_... options in here help?

2 Likes