BIGTREETECH Octopus Pro V1.1 STM32H723ZE trying to program

[MeisterPilaf]

Hello everyone, I am trying to use the BIGTREETECH Octopus Pro V1.1 board for my project. It is my first time using the STM32 MCU (STM32H723ZE) and the STM32duino project, so I don't know what I am doing wrong.I am trying to upload a simple blink sketch via Arduino DFU or compile and put the *.bin file on the SD card to flash the board. Im able by flashing the board using the SD card but no blink. If I do that with the DFU mode, I always overwrite the bootloader which I obtained from the GitHub repository of BTT.

https://github.com/bigtreetech/BIGTREETECH-OCTOPUS-Pro/blob/master/Hardware/BIGTREETECH%20Octopus%20Pro%20V1.1-Pin.jpg

my sketch:

#include <Arduino.h>

void setup() {
  // Setze den Pin PA8 als Ausgang
  pinMode(PA_8, OUTPUT);
}

void loop() {
  // Schalte den Pin PA8 ein
  digitalWrite(PA_8, HIGH);
  delay(1000); // Warte eine Sekunde

  // Schalte den Pin PA8 aus
  digitalWrite(PA_8, LOW);
  delay(1000); // Warte eine Sekunde
}

My settings on Arduino IDE:

also tried with that:

Both are not working. I am not able to get the board to trigger the PA_8 pin.

I am pretty sure I have to configure something else in order to program it correctly, but I have no clue what to do.

Maybe someone here can help me.

Thank you in advance

[fpistm]

Use PA8 instead of PA_8.
PYn are pin number used for the Arduino API, while PY_n are PinName mainly used internally by the core.

[fpistm]

You use PA8? Not PA_8?

[MeisterPilaf]

yes:

`#include <Arduino.h>

void setup() {
// Setze den Pin PA8 als Ausgang
pinMode(PA8, OUTPUT);
}

void loop() {
// Schalte den Pin PA8 ein
digitalWrite(PA8, HIGH);
delay(1000); // Warte eine Sekunde

// Schalte den Pin PA8 aus
digitalWrite(PA8, LOW);
delay(1000); // Warte eine Sekunde
}`

[fpistm]

Looking at the scematics, PA8 is not connected to a LED it is FAN_0 signal connected to a 74HCT365...

PB0 is connected to LED signal, anyway it seems used to drive a RGB LED.

[MeisterPilaf]

Yes, but in the schematics, you can see that PA8 is also connected to an LED as an indicator that FAN_0 is ON. Also, I measured with my multimeter if the pin triggers, and I see no 3.3V for 1 second.

[fpistm]

Yes but also link to other signal:

Anyway if you was able to measure PA8 the code probably stuck before.
As stated try to debug to see if the clock config is properly done as they call error handler in case of error...

[MeisterPilaf]

I tried it now with the STM32CubeIDE, and it is working. I can now blink PA8.

` HAL_GPIO_WritePin(GPIOA, GPIO_PIN_8, GPIO_PIN_RESET);
/* USER CODE END 2 */

/* Infinite loop /
/ USER CODE BEGIN WHILE /
while (1)
{
/ USER CODE END WHILE /
HAL_GPIO_TogglePin(GPIOA, GPIO_PIN_8);
HAL_Delay(1000);
/ USER CODE BEGIN 3 /
}
/ USER CODE END 3 */
}`

I did not configure anything except for PA8 set to GPIO_OUTPUT. I just selected the correct MCU and changed the main.c with the code above.

Why does it not work when I'm using the Arduino IDE?

[fpistm]

Probably the clock config... try to comment it to see if it works with default one. Or use the one from your cube ide project.

[MeisterPilaf]

where can i find the clock config? Sorry for the questions.

[fpistm]

Here:

Arduino_Core_STM32/variants/STM32H7xx/H723Z(E-G)T_H730ZBT_H733ZGT/generic_clock.c

Line 22 in d5ee712

WEAK void SystemClock_Config(void)

We agreed you use the generic and not the nucleo?

[MeisterPilaf]

OK I found that file but im not sure what i have to copy from STM32CubeIDE to that file. Could you give me another hint? 🗡️

Yes, we are using the generic one.

[MeisterPilaf]

blink.zip
here is the complete project from STM32CubeIDE. also tried to flash the *.bin file with CubeProgrammer and it is working.

[MeisterPilaf]

Ok, i found the "problem":

If I set this option to "None", it works. Why does that happen?
Do I have to set up the SystemClock? Are there any advantages to using an external oscillator?

Is the MCU running at 550MHz?

Thank you for your help :)

[fpistm]

You have to provide a clock config to ensure the USB clock is 48MHz.
You use STM32CubeMX to properly configure the clock.
About the usage of external oscillator, it allows to have a better stability but it consumes more power.