STM32H7B3IL-DK - Trace & Profiling is not working correctly.

Hi Mattias,

They are the same if HCLK is the same variable as SystemCoreClock at 280 MHz

If HCLK is a different variable from SystemCoreClock how can I work out what the value is?

Here is my code (from CubeMX) for my clock setup:

void SystemClock_Config(void)
{
 RCC_OscInitTypeDef RCC_OscInitStruct = {0};
 RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};
 
 /** Supply configuration update enable
 */
 HAL_PWREx_ConfigSupply(PWR_DIRECT_SMPS_SUPPLY);
 /** Configure the main internal regulator output voltage
 */
 __HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE0);
 
 while(!__HAL_PWR_GET_FLAG(PWR_FLAG_VOSRDY)) {}
 /** Configure LSE Drive Capability
 */
 HAL_PWR_EnableBkUpAccess();
 __HAL_RCC_LSEDRIVE_CONFIG(RCC_LSEDRIVE_LOW);
 /** Macro to configure the PLL clock source
 */
 __HAL_RCC_PLL_PLLSOURCE_CONFIG(RCC_PLLSOURCE_HSE);
 /** Initializes the RCC Oscillators according to the specified parameters
 * in the RCC_OscInitTypeDef structure.
 */
 RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSI48 |
 																	 RCC_OSCILLATORTYPE_HSI |
																		 RCC_OSCILLATORTYPE_HSE |
																		 RCC_OSCILLATORTYPE_LSE;
 RCC_OscInitStruct.LSEState = RCC_LSE_BYPASS;
 RCC_OscInitStruct.HSEState = RCC_HSE_ON;
// RCC_OscInitStruct.LSEState = RCC_LSE_ON;
 RCC_OscInitStruct.HSIState = RCC_HSI_DIV1;
 RCC_OscInitStruct.HSI48State = RCC_HSI48_ON;
 RCC_OscInitStruct.HSICalibrationValue = RCC_HSICALIBRATION_DEFAULT;
 RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
 RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;
 RCC_OscInitStruct.PLL.PLLM = 12;
 RCC_OscInitStruct.PLL.PLLN = 280;
 RCC_OscInitStruct.PLL.PLLP = 2;
 RCC_OscInitStruct.PLL.PLLQ = 2;
 RCC_OscInitStruct.PLL.PLLR = 4;
 RCC_OscInitStruct.PLL.PLLRGE = RCC_PLL1VCIRANGE_1;
 RCC_OscInitStruct.PLL.PLLVCOSEL = RCC_PLL1VCOWIDE;
 RCC_OscInitStruct.PLL.PLLFRACN = 0;
 if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
 {
 __asm("BKPT #0\n") ; /* TODO Break into the debugger */
 }
 /** 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_DIV2;
 RCC_ClkInitStruct.APB3CLKDivider = RCC_APB3_DIV2;
 RCC_ClkInitStruct.APB1CLKDivider = RCC_APB1_DIV2;
 RCC_ClkInitStruct.APB2CLKDivider = RCC_APB2_DIV2;
 RCC_ClkInitStruct.APB4CLKDivider = RCC_APB4_DIV2;
 
 if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_3) != HAL_OK)
 {
 __asm("BKPT #0\n") ; /* TODO Break into the debugger */
 }
 HAL_RCC_MCOConfig(RCC_MCO1, RCC_MCO1SOURCE_HSE, RCC_MCODIV_1);
}

Suspecting you are correct about the clock frequency setting being incorrect I set the Debuh clock setting to 140 MHz and it now seemt to be working.

I am confused however as when I work my way through the CubeMX Clock tree I get 280, SystemCoreClock sys 280 and when I look at the clock initialization code that lines up with t CubeMX and also gives 280.

The problem I fin is that the nomenclature of the CubeMX clock tree does not line up with the clock code. i.e. SystemCoreClock is not shown on the CubeMZ tree and I am assuming its the signal that goes to the CPU Clocks (MHz).

I took a screen shot of the registers:

SWV Settings:

I think I've figured out the terminology now, the CubeMX nomenclature refers to RCC register sub fields. But i still reckon the clock is 280 MHz not 140.

Any ideas on what I'm doing wrong. I'm worried now that the CPU clock is 140 not 180.

Best regards Rob

>>Moderator note: Internal name removed

The Tiny Shark reference for the board and MCU is in multiple places, it was in the schematic title for many years, and still at least one reference in the current one.

https://www.st.com/content/ccc/resource/technical/layouts_and_diagrams/schematic_pack/group1/e0/e5/29/92/9d/37/47/91/MB1332-H7B3I-B02_Schematic/files/MB1332-H7B3I-B02_Schematic.PDF/jcr:content/translations/en.MB1332-H7B3I-B02_Schematic.PDF

It was purged from multiple places, but is still in the web link for Farnell/Newark

https://pl.farnell.com/en-PL/stmicroelectronics/stm32h7a3zit6/tiny-shark-mcu/dp/3297728