Arduino for STM32

if the stm32cube programmer messages make sense, it seem your boards are actually working, otherwise cannot even program. but the blink test not working is unusual. I rebuild a blink test with some other test usb, adc, temperature reading, whetstone benchmark etc my board is 25 mhz, I've rebuild thi...

if that doesn't work, then it is unlikely to be a clock issue, because by returning in void SystemClock_Config(), before clock setting.
it is running on its internal clock, not even on the crystal

it seem you have a few boards, all of them don't work?

Fziegler_076 wrote: ↑Sun Apr 21, 2024 2:48 am

void SystemClock_Config() {

return; // <- return on entry, so no clock setting is done

....
}

Should I do this in a sketch or fix some file?

I also bought the same boards with HSE 25 MHz today, but they will arrive no earlier than in 2 weeks.

inside that variant file

for 32k RTC crystal , i've a few times it doesn't oscillate, but normally for the HSE 8, 12, 25 mhz crystals etc, seldom have problem, so it is surprising if HSE don't oscillate, but maybe sometimes that can happen.

if you really want to get to the bottom of that, the only way seemed to be to use a st-link v2 https://www.adafruit.com/product/2548 https://www.st.com/en/development-tools/st-link-v2.html https://octopart.com/search?q=st-link+v2&currency=USD&specs=0 then you can try to debug that, but that ...

The values given and used are correct, yup check the LED, try to use a led connected to a different pin manually e.g. on the headers. I've more than once used boards with a 'defective' LED, sometimes they put the LED reversed, that'd never light up. manufacturing error. no need to look at schematic....

@Fziegler_076 wrote: RCC_OscInitStruct.PLL.PLLM = 8; RCC_OscInitStruct.PLL.PLLN = 48; RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV4; RCC_OscInitStruct.PLL.PLLQ = 8; ^ this won't work, try RCC_OscInitStruct.PLL.PLLM = 8; RCC_OscInitStruct.PLL.PLLN = 192; RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV2; RCC_O...

Note that even with a wrong crystal frequency, you should be able to blink your led void setup() { pinMode(LED_BUILTIN,OUTPUT); } void loop() { digitalWrite(LED_BUILTIN, ! digitalRead(LED_BUILTIN)); delay(1000); } and your LED should blink, if it doesn't blink then your issue is likely not related t...

I suppose you are using a stm32f401cxx blackpill (or some such variant?) https://stm32-base.org/boards/STM32F401CCU6-WeAct-Black-Pill-V1.2.html the 'usual' thing is, keep your usb cable connected press both boot0 and reset hold boot0 and release reset release boot0 1-2 secs later you can check in 'd...

Binary size difference appears to be Newlib Standard vs Newlib nano setting... Not entirely sure what newlib is... :D Clock situation still appears to be happening. I once tried things like -nostdlib -nostartfiles -nodefaultlibs https://gcc.gnu.org/onlinedocs/gcc-4.4.2/gcc/Link-Options.html and the...