NucleoF030R8 not work

PlatformIO IDE
#1

I’m trying to run NucleoF030R8.
Simple blink program compiles and loads OK.
But nothing works.
I tested on Nucleo-L053R8, Nucleo-F031 plates and it works on them.
After writing a simple program on the STM32CubeIDE NucleoF030R8 everything works fine.
I work on
Platformio core 6.1.1
ST STM32 15.4.1
My ini file

[env: nucleo_f030r8]
platform = ststm32
board = nucleo_f030r8
framework = arduino
upload_port = COM6
upload_protocol = stlink

Thanks for any help.

#2

If your upload_protocol is stlink, then its using a USB device and you shouldn’t put a upload_port there at all.

And what code are you running where “nothing works”?

#3

My code

#include <Arduino.h>
#ifndef LED_BUILTIN
  #define LED_BUILTIN PA5
#endif

void setup()
{
  pinMode(LED_BUILTIN, OUTPUT);
}
void loop()
{
  digitalWrite(LED_BUILTIN, HIGH);
  delay(1000);
  digitalWrite(LED_BUILTIN, LOW);
  delay(1000);
}
#4

Code looks good to me. LED definition is even unnecessary.

100% sure the chip on the board is a STM32F030R8?

When you add

extern "C" void SystemClock_Config(void) {}

to the main.cpp and reupload, does it change anything?

#5

My chip:

20220715-114600-897
20220715-114600-8971600×1200 312 KB

When I add

extern "C" void SystemClock_Config(void) {}

Works :slight_smile:
Could you please explain to me why this is so?

Thanks.

#6

Well the code is just a hack to disable default clock code, which tries to use the the expected 8MHz clock signal output by the ST-Link with the PLL (x6 multiplier → 48MHz) in HSE bypass mode (not crystal oscillator mode).

So if that does not work, you may have an older board revision that does not feed the ST-Link clock into the F0 chip. (And likely the crystal directly under the F0 chip is not populated, so the chip has 0 access to a high speed clock crystal or signal).

That was aleady discussed in Nucleo F401RE fails to execute Clock init issue - #13 by vortex314. You should modify the solder bridges (SB…) for the clock to be forwarded correctly to the F0 chip, then remove the

code. You have a hardware problem, in summary.

#7

Now it’s all clear.
I have a broken Nucleo and ST-Link board.
Thank you very much for your help.

#8

If it is an older revision board it is supposed to be that way and wasn’t broken.

Again, make sure the SB16 and SB50 which are located on the back of the board have a 0 ohm resistor or a solder blob accross them, then it should work.

The other workaround is to use a clock init code that uses the internal high speed clock, i.e., write

extern "C" void SystemClock_Config(void) {
  RCC_OscInitTypeDef RCC_OscInitStruct = {};
  RCC_ClkInitTypeDef RCC_ClkInitStruct = {};

  /** Initializes the RCC Oscillators according to the specified parameters
  * in the RCC_OscInitTypeDef structure.
  */
  RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSI;
  RCC_OscInitStruct.HSIState = RCC_HSI_ON;
  RCC_OscInitStruct.HSICalibrationValue = RCC_HSICALIBRATION_DEFAULT;
  RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
  RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSI;
  RCC_OscInitStruct.PLL.PLLMUL = RCC_PLL_MUL12;
  RCC_OscInitStruct.PLL.PREDIV = RCC_PREDIV_DIV1;
  if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK) {
    Error_Handler();
  }
  /** Initializes the CPU, AHB and APB buses clocks
  */
  RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK | RCC_CLOCKTYPE_SYSCLK
                                | RCC_CLOCKTYPE_PCLK1;
  RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
  RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
  RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV1;

  if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_1) != HAL_OK) {
    Error_Handler();
  }
}

(from here) in your src/main.cpp. That’s the best you can do with the internal clock source avaiable to you.