ESP32 Core v2.0.1 / 2.0.1 RC1 crashes if using pinMode with GPIO1

[khoih-prog]

Core ESP32 Core v2.0.1 / 2.0.1 RC1 crashes if using pin pinMode with GPIO1, INPUT or OUTPUT mode. No issue with core v2.0.0-

With the following simple sketch, it's working OK if using PIN_D2 or PIN_D3, but crash if using PIN_D1

#define PIN_D1            1         // Pin D1 mapped to pin GPIO1/TX0 of ESP32
#define PIN_D2            2         // Pin D2 mapped to pin GPIO2/ADC12/TOUCH2/LED_BUILTIN of ESP32
#define PIN_D3            3         // Pin D3 mapped to pin GPIO3/RX0 of ESP32

#define PIN_OUT           PIN_D1

void setup() 
{
  // put your setup code here, to run once:
  Serial.begin(115200);
  while (!Serial);

  delay(1000);
  
  Serial.print("\nStarting D1_Crash using with pin = "); Serial.print(PIN_OUT); Serial.print(" on "); Serial.println(ARDUINO_BOARD);

  pinMode(PIN_OUT, OUTPUT);
}

void loop() 
{
  digitalWrite(PIN_OUT, HIGH);
  Serial.println("H");        // H means High
  delay(1000);
  digitalWrite(PIN_OUT, LOW);
  Serial.println("L");        // H means High
  delay(1000);
}

[me-no-dev]

any logs from that crash?

[khoih-prog]

Even with Core Debug Level: "Verbose", the terminal debug has almost nothing

⸮

Using

#define PIN_OUT           PIN_D2

the debug terminal is

Starting D1_Crash using with pin = 2 on ESP32_DEV
H
L
H
L
H
L
H
L
H
...

[VojtechBartoska]

Hello, is this still valid @khoih-prog?

GPIO was refactored in meantime, if yes, are you able to test this on v2.0.3-RC1?

[khoih-prog]

Hi @VojtechBartoska

Just retest on ESP32_DEV and still have crashes when using PIN_D1 and v2.0.3-RC1

No crash at all when testing with ESP32_S2, ESP32_S3 and ESP32_C3 using PIN_D1

[P-R-O-C-H-Y]

Hi @khoih-prog,
what board are you using with ESP32_DEV?

[P-R-O-C-H-Y]

@khoih-prog
For ESP32 the Serial uses by default these pins:
UART0 RX pin 3
UART0 TX pin 1
Thats when you do pinMode on pin 1, the Serial no longer works.

[khoih-prog]

Hi @P-R-O-C-H-Y

Thanks for the clarification. So sorry, this is my weird and funny mistake. The board is still working, not crash at all. Just the Serial @ UART0 in not working.