serialEvent not called (Esp32-S2 Reverse TFT)

[avsteele]

serialEvent() does not appear to run on this board when data is received. Other serial operations seem to be OK.

I am not an expert on this but I think it should be called as long as there isn't something wrong with the hardware pins (Rx0=44, Tx0=43). Are these tied to something odd for this board?

Relevant code is below:
https://github.com/espressif/arduino-es ... Serial.cpp

I haven't had trouble with serialEvent on other boards, e.g. the Esp32 V2 feather.

The simple sketch to check this:

Code: Select all

int incomingByte = 0; // for incoming serial data

void setup() {
  Serial.begin(115200); // opens serial port, sets data rate to 9600 bps
}

bool gotEvent = false;
bool gotEvent1 = false;
bool gotEvent2 = false;

void loop() {
  if (Serial.available() > 0) {
    // read the incoming byte:
    incomingByte = Serial.read();

    // say what you got:
    Serial.print("I received: ");
    Serial.println(incomingByte, DEC);
  }
  if(gotEvent || gotEvent1 || gotEvent2)
  {
    Serial.println("event");
    gotEvent= false;
    gotEvent1= false;
    gotEvent2= false;
  }
}

void serialEvent() {
  gotEvent = true;  
}

void serialEvent1() {
  gotEvent1 = true;  
}

void serialEvent2() {
  gotEvent2 = true;  
}

[mikeysklar]

There serial port pins look different in the Eagle schematic off the Downloads page than the ones noted in the ESP IDF definitions.

Screenshot from 2023-04-01 11-04-25.png (131.22 KiB) Viewed 20 times

[avsteele]

Hmm, thanks. Not sure I fully follow how this all goes together. Can something be changed in the library files to fix this?