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STM32H743VIT6 SystemClock_Config ends in Error_Handler...

Sany
Associate III

Hey Guys,

I have problems about configure my STM32H743VIT SysClock.

On my own PCB, i have a Crystal with 8 MHZ, and a LSE of 32.768 khz.

Settings are in my Screenshots, now if i debug my application, it ends in a Error Handler.. but why?

BTW: UART4,5,7 and USART1,2 enabled, and USB_DEVICE + USB_HOST is enabled.

 

 

  if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
  {
    Error_Handler(); /** JUMPS TO ERROR_HANDLER **/
  }

 

 

my complete SystemClockConfig:

 

 

void SystemClock_Config(void)
{
  RCC_OscInitTypeDef RCC_OscInitStruct = {0};
  RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};

  /** Supply configuration update enable
  */
  HAL_PWREx_ConfigSupply(PWR_LDO_SUPPLY);

  /** Configure the main internal regulator output voltage
  */
  __HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE2);

  while(!__HAL_PWR_GET_FLAG(PWR_FLAG_VOSRDY)) {}

  /** Initializes the RCC Oscillators according to the specified parameters
  * in the RCC_OscInitTypeDef structure.
  */
  RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSI|RCC_OSCILLATORTYPE_HSE;
  RCC_OscInitStruct.HSEState = RCC_HSE_BYPASS;
  RCC_OscInitStruct.HSIState = RCC_HSI_DIV1;
  RCC_OscInitStruct.HSICalibrationValue = RCC_HSICALIBRATION_DEFAULT;
  RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
  RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;
  RCC_OscInitStruct.PLL.PLLM = 1;
  RCC_OscInitStruct.PLL.PLLN = 24;
  RCC_OscInitStruct.PLL.PLLP = 2;
  RCC_OscInitStruct.PLL.PLLQ = 4;
  RCC_OscInitStruct.PLL.PLLR = 2;
  RCC_OscInitStruct.PLL.PLLRGE = RCC_PLL1VCIRANGE_3;
  RCC_OscInitStruct.PLL.PLLVCOSEL = RCC_PLL1VCOWIDE;
  RCC_OscInitStruct.PLL.PLLFRACN = 0;
  if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
  {
    Error_Handler(); /** JUMPS TO ERROR_HANDLER **/
  }

  /** Initializes the CPU, AHB and APB buses clocks
  */
  RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK|RCC_CLOCKTYPE_SYSCLK
                              |RCC_CLOCKTYPE_PCLK1|RCC_CLOCKTYPE_PCLK2
                              |RCC_CLOCKTYPE_D3PCLK1|RCC_CLOCKTYPE_D1PCLK1;
  RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_HSI;
  RCC_ClkInitStruct.SYSCLKDivider = RCC_SYSCLK_DIV1;
  RCC_ClkInitStruct.AHBCLKDivider = RCC_HCLK_DIV1;
  RCC_ClkInitStruct.APB3CLKDivider = RCC_APB3_DIV1;
  RCC_ClkInitStruct.APB1CLKDivider = RCC_APB1_DIV1;
  RCC_ClkInitStruct.APB2CLKDivider = RCC_APB2_DIV1;
  RCC_ClkInitStruct.APB4CLKDivider = RCC_APB4_DIV1;

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

 

 

 Thank you :)

21 REPLIES 21
Sany
Associate III

Hello,

Sorry for my confusion, the day is long...

i have only a crystal on my pcb with 2 pins (not a crystal oscillator, with 3.3V supply), the crystal swings with 7.99997 MHZ on my oscilloscope.

 

i check my schematic, and i  found a big problem, i have a crystal with 8mhz on 2 pins, but i forgot the decoupling condensators on the side to ground... :(

 

i think, that was the problem..?


@Sany wrote:

the crystal swings with 7.99997 MHZ on my oscilloscope.

 


Sorry I didn't undrstand, but you got the oscillation and 7.99997MHz is a good value. What's the problem then?

I don't think CL could induce the described issue at the beginning.

The CL are responsible to fine tune the frequency of the crystal:

From AN2867 "Guidelines for oscillator design on STM8AF/AL/S and STM32 MCUs/MPUs":

SofLit_0-1730234342075.png

And you still didn't answer my question regarding what the exact config you are really using?

Please answer the question from my previous comment:

SofLit_1-1730234565987.png

Bypass or not? you should not use Bypass in your case as you are using a Crystal.

To give better visibility on the answered topics, please click on "Accept as Solution" on the reply which solved your issue or answered your question.
Sany
Associate III

Hello,

my configuration with crystal (no XO) 8 MHZ is this:

void SystemClock_Config(void)
{
  RCC_OscInitTypeDef RCC_OscInitStruct = {0};
  RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};

  /** Supply configuration update enable
  */
  HAL_PWREx_ConfigSupply(PWR_LDO_SUPPLY);

  /** Configure the main internal regulator output voltage
  */
  __HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE2);

  while(!__HAL_PWR_GET_FLAG(PWR_FLAG_VOSRDY)) {}

  /** Initializes the RCC Oscillators according to the specified parameters
  * in the RCC_OscInitTypeDef structure.
  */
  RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSI48|RCC_OSCILLATORTYPE_HSE;
  RCC_OscInitStruct.HSEState = RCC_HSE_ON;
  RCC_OscInitStruct.HSI48State = RCC_HSI48_ON;
  RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
  RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;
  RCC_OscInitStruct.PLL.PLLM = 4;
  RCC_OscInitStruct.PLL.PLLN = 75;
  RCC_OscInitStruct.PLL.PLLP = 2;
  RCC_OscInitStruct.PLL.PLLQ = 8;
  RCC_OscInitStruct.PLL.PLLR = 2;
  RCC_OscInitStruct.PLL.PLLRGE = RCC_PLL1VCIRANGE_1;
  RCC_OscInitStruct.PLL.PLLVCOSEL = RCC_PLL1VCOMEDIUM;
  RCC_OscInitStruct.PLL.PLLFRACN = 0;
  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_CLOCKTYPE_PCLK2
                              |RCC_CLOCKTYPE_D3PCLK1|RCC_CLOCKTYPE_D1PCLK1;
  RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
  RCC_ClkInitStruct.SYSCLKDivider = RCC_SYSCLK_DIV1;
  RCC_ClkInitStruct.AHBCLKDivider = RCC_HCLK_DIV1;
  RCC_ClkInitStruct.APB3CLKDivider = RCC_APB3_DIV1;
  RCC_ClkInitStruct.APB1CLKDivider = RCC_APB1_DIV2;
  RCC_ClkInitStruct.APB2CLKDivider = RCC_APB2_DIV2;
  RCC_ClkInitStruct.APB4CLKDivider = RCC_APB4_DIV1;

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

Error_Handler is called by this function with HAL_TIMEOUT:

if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)

 

      /* Check the HSE State */
      if (RCC_OscInitStruct->HSEState != RCC_HSE_OFF)
      {
        /* Get Start Tick*/
        tickstart = HAL_GetTick();

        /* Wait till HSE is ready */
        while (__HAL_RCC_GET_FLAG(RCC_FLAG_HSERDY) == 0U)
        {
          if ((uint32_t)(HAL_GetTick() - tickstart) > HSE_TIMEOUT_VALUE)
          {
            return HAL_TIMEOUT;
          }
        }
      }

 i dont understand the problem, why the error is HAL_TIMEOUT.

SofLit
ST Employee

1- Did you solder CL load capacitors? 

2- Please attach your ioc file.

To give better visibility on the answered topics, please click on "Accept as Solution" on the reply which solved your issue or answered your question.

@Sany wrote:

 i dont understand the problem, why the error is HAL_TIMEOUT.


It's waiting for the HSE to become ready - that is taking too long, so you get a timeout.

So look at what might prevent the HSE from starting; eg, shorting both OSC_IN and OSC_out to ground would be a pretty effective way:

AndrewNeil_0-1730276470166.png

 

Sany
Associate III

1. No, i can solder it tomorrow.

2. my ioc in attached.

Okay, it's the forgotten CL load capacitor, i tested my config with disabled HSE and enabled LSE, and it worked.
*** it... this errors costs a little bit of time... thank you for help me!


@Sany wrote:

i check my schematic, and i  found a big problem, i have a crystal with 8mhz on 2 pins, but i forgot the decoupling condensators on the side to ground... :(


It's worse than that!

Both sides of the crystal are shorted to ground!

AndrewNeil_0-1730282098706.png

 


@Sany wrote:

i think, that was the problem..?


Yep - which shows why it's important to post the schematic!

Hello,

Just a question: your system clock is set to 75MHz, and the VOS is set to VOS2 while it needs to be set to VOS3:

SofLit_1-1730282528082.png

Did you set it manually or it was set automatically by CubeMx?

 

 

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Sany
Associate III

Hey,

I enabled only the HSE and LSE and changed my system clock to 160 MHZ in CubeMX.
After i disabled my wrong soldered HSE, the system clock is changed to 75mhz after i clicked "resolve clock issues"
CubeMX sets automatically the VOS2, i changed the VOS2 now to VOS3 manually.

i created a new project, and CubeMX sets VOS to VOS0 and Product Revision to "Y". When i change the Product Revision to "V" then sets CubeMX VOS2.

That's a good hint, i wouldn't have noticed it, because my code runs, after disabling the HSE.

here is my corrected config, with VOS3, 160mhz, and disabled HSE.

Hello @Sany ,

your attached ioc file is setting the system clock to 64Mhz with HSI.

I'm very confused. We need to converge.

So to conclude: if you have

Rev Y: Max system clock is 400MHz at VOS1.

Rev V: Max system clock is 480MHz at VOS0.

I'm attaching your ioc file with some modifications I did to set the crystal at 8MHz and system clock at 400MHz at VOS1 (this is working on rev Y and Rev V).

If this config doesn't work:

- You need first to add CL capacitors (even I'm not sure this is the issue).

- Replace your crystal. It could be something related to the crystal.

Hope it helps.

 

 

 

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