ESP32 HardwareSerial WDT reset

[raz0rf0x]

I am trying to read from an RS485 module using UART2 on pins 16&17 at 1200 8N1.
For some reason whenever there is incoming data from the serial it crashes on a WDT reset.
Stack trace says that it is freaking out at the Serial2.read(); line.

Code: Select all

Meditation Error: Core  1 panic'ed (Interrupt wdt timeout on CPU1)

The gist of it is this:

Code: Select all

 
 HardwareSerial RS485Serial(2);
 ...
 RS485Serial.begin(1200);
 ...
    while(RS485Serial.available()) {
      messageBuffer[bufferlen++] = RS485Serial.read();}

Any ideas what may be causing that?

[ESP_Sprite]

What hardware are you using?