AVR32DA32, millis()/micros() - problem

[hikssss]

Hi all, I made a board on AVR32DA32, installed kernel v.1.5.11, in Arduino IDE 2.3.3.
When using millis()/micros() functions - they do not work. Changed different settings and selected different timers from the menu - no help. What can you think of?

[grandaspanna]

Any chance you're not using setup()/loop() and instead using main()?

For elimination of any doubt, post a code example.

[hikssss]

[grandaspanna]

Looks reasonable - just wanted to eliminate one possibility. I don't see an obvious issue, but Arduino 2.X is not officially supported. Are you able to repeat the behaviour with 1.8.x? I've used some DA chips successfully...

[hikssss]

I'll try it on the 1.8 and post it here.
I also tried attiny826,- millis/micros/delay seem to work fine.

[hikssss]

nothing has changed (((

[grandaspanna]

That's pretty annoying. The 826 uses a different core. Which version of the Dx core do you have installed?

[hikssss]

V.1.5.11

[grandaspanna]

Mmmm, ok. I've got a DA28 board that runs fine and uses millis() quite a bit. However, I'm running it at 16MHz (neopixel library doesn't seem to be happy with 24MHz). Also, I'm not using optiboot.

[hikssss]

OK, I'll try it now at 16mhz and no bootloader.

[hikssss]

New problem, when I program directly without bootloader, Serial.print does not work anymore....
Outputs the first letter of the message with high speed. I tried different variants and it didn't help.

[hikssss]

I also have AVR128DB28 available, but it needs to be soldered on the board. I will do it a little later and check its behavior.

[hikssss]

I tested AVR128DB28 - everything is fine, both with bootloader and without bootloader everything works! I tried another AVR32DA32 - does not work normally. I think the problem is in DxCore, right?

[fsievers]

Is it possible that you MCU is rebooting after one iteration of the loop?
Can you add a counter variable that increases on every loop() call and also print it's value?

[hikssss]

with a bootloader:

without a bootloader:

[hikssss]

When loading a sketch without a bootloader, the MCU keeps resetting. This can be seen by a slightly glowing LED

void setup() {
  Serial.begin(9600);
  pinMode(LED_BUILTIN, OUTPUT);
  digitalWrite(LED_BUILTIN, HIGH);
}

void loop() {
  digitalWrite(LED_BUILTIN, LOW);
  static uint16_t a = 0;
  Serial.print("a: "); Serial.print(a++); Serial.println();
  Serial.print("millis: "); Serial.print(millis()); Serial.println();
  Serial.print("micros: "); Serial.print(micros()); Serial.println();
}

[hikssss]

Who else would check avr32da32, that would be great. But 99.9% it's a kernel bug.

[MX682X]

for me this looks like interrupts are not working correctly. Try adding this to setup:

  pinMode(PIN_PA6, OUTPUT);
  pinConfigure(PIN_PA7, (PIN_DIR_INPUT | PIN_PULLUP | PIN_ISC_FALL));

and that at the end of the sketch.

ISR(PORTA_PORT_vect) {
  digitalWrite(PIN_PA6, HIGH);
  VPORTA.INTFLAGS |= 0x80;
}

Substitute PORT letter and Pin Number to whatever is available. A button or Wire on Input and an LED or something on the output.

If it is indeed not working, try adding a
sei();
to setup and check if it still isn't working. If it starts working, we'll know that the "I" flag in SREG is missing for some reason