I am using NUCLEO-F767ZI board where I observe that when I use the internal clock (HSI), the mcu runs fine, but when I configure the cubeMX project to run on external 8MHz clock (HSE), the mcu fails to run. Following is the code generated by CubeMX when HSE is selected:
/** System Clock Configuration
*/void SystemClock_Config(void){RCC_OscInitTypeDef RCC_OscInitStruct;
RCC_ClkInitTypeDef RCC_ClkInitStruct; RCC_PeriphCLKInitTypeDef PeriphClkInitStruct;/**Configure the main internal regulator output voltage
*/ __HAL_RCC_PWR_CLK_ENABLE();__HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE1);
/**Initializes the CPU, AHB and APB busses clocks
*/ RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE; RCC_OscInitStruct.HSEState = RCC_HSE_ON; RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON; RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE; RCC_OscInitStruct.PLL.PLLM = 4; RCC_OscInitStruct.PLL.PLLN = 96; RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV2; RCC_OscInitStruct.PLL.PLLQ = 11; if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK) { _Error_Handler(__FILE__, __LINE__); }/**Activate the Over-Drive mode
*/ if (HAL_PWREx_EnableOverDrive() != HAL_OK) { _Error_Handler(__FILE__, __LINE__); }/**Initializes the CPU, AHB and APB busses clocks
*/ RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK|RCC_CLOCKTYPE_SYSCLK |RCC_CLOCKTYPE_PCLK1|RCC_CLOCKTYPE_PCLK2; RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK; RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1; RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV2; RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV2;if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_3) != HAL_OK)
{ _Error_Handler(__FILE__, __LINE__); }PeriphClkInitStruct.PeriphClockSelection = RCC_PERIPHCLK_USART1|RCC_PERIPHCLK_USART2
|RCC_PERIPHCLK_USART3|RCC_PERIPHCLK_USART6 |RCC_PERIPHCLK_UART4|RCC_PERIPHCLK_UART5 |RCC_PERIPHCLK_UART7|RCC_PERIPHCLK_UART8 |RCC_PERIPHCLK_CLK48; PeriphClkInitStruct.PLLSAI.PLLSAIN = 96; PeriphClkInitStruct.PLLSAI.PLLSAIR = 2; PeriphClkInitStruct.PLLSAI.PLLSAIQ = 2; PeriphClkInitStruct.PLLSAI.PLLSAIP = RCC_PLLSAIP_DIV4; PeriphClkInitStruct.PLLSAIDivQ = 1; PeriphClkInitStruct.PLLSAIDivR = RCC_PLLSAIDIVR_2; PeriphClkInitStruct.Usart1ClockSelection = RCC_USART1CLKSOURCE_PCLK2; PeriphClkInitStruct.Usart2ClockSelection = RCC_USART2CLKSOURCE_PCLK1; PeriphClkInitStruct.Usart3ClockSelection = RCC_USART3CLKSOURCE_PCLK1; PeriphClkInitStruct.Uart4ClockSelection = RCC_UART4CLKSOURCE_PCLK1; PeriphClkInitStruct.Uart5ClockSelection = RCC_UART5CLKSOURCE_PCLK1; PeriphClkInitStruct.Usart6ClockSelection = RCC_USART6CLKSOURCE_PCLK2; PeriphClkInitStruct.Uart7ClockSelection = RCC_UART7CLKSOURCE_PCLK1; PeriphClkInitStruct.Uart8ClockSelection = RCC_UART8CLKSOURCE_PCLK1; PeriphClkInitStruct.Clk48ClockSelection = RCC_CLK48SOURCE_PLLSAIP; if (HAL_RCCEx_PeriphCLKConfig(&PeriphClkInitStruct) != HAL_OK) { _Error_Handler(__FILE__, __LINE__); }/**Configure the Systick interrupt time
*/ HAL_SYSTICK_Config(HAL_RCC_GetHCLKFreq()/1000);/**Configure the Systick
*/ HAL_SYSTICK_CLKSourceConfig(SYSTICK_CLKSOURCE_HCLK);/* SysTick_IRQn interrupt configuration */
HAL_NVIC_SetPriority(SysTick_IRQn, 15, 0);}
Am I missing something or this is a bug? I have tried using both v4.20 and v4.23 of CubeMX tool and facing the same issue. Any resolutions?
#cubemx-project #stm32f7Accepted Solutions
I have been working with this board for a month with cube. No issues.
I just did a new cube (4.1) project with same HCLK (96mhz) as you show. It works fine.
You didn't show the pins page, but i assume it looks like this;
Here is clock code that i get;
/** System Clock Configuration */ void SystemClock_Config(void) { RCC_OscInitTypeDef RCC_OscInitStruct; RCC_ClkInitTypeDef RCC_ClkInitStruct; /**Configure the main internal regulator output voltage */ __HAL_RCC_PWR_CLK_ENABLE(); __HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE3); /**Initializes the CPU, AHB and APB busses clocks */ RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE; RCC_OscInitStruct.HSEState = RCC_HSE_ON; RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON; RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE; RCC_OscInitStruct.PLL.PLLM = 4; RCC_OscInitStruct.PLL.PLLN = 96; RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV2; RCC_OscInitStruct.PLL.PLLQ = 2; if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK) { _Error_Handler(__FILE__, __LINE__); } /**Activate the Over-Drive mode */ if (HAL_PWREx_EnableOverDrive() != HAL_OK) { _Error_Handler(__FILE__, __LINE__); } /**Initializes the CPU, AHB and APB busses clocks */ RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK|RCC_CLOCKTYPE_SYSCLK |RCC_CLOCKTYPE_PCLK1|RCC_CLOCKTYPE_PCLK2; RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK; RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1; RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV2; RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV2; if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_3) != HAL_OK) { _Error_Handler(__FILE__, __LINE__); } /**Configure the Systick interrupt time */ HAL_SYSTICK_Config(HAL_RCC_GetHCLKFreq()/1000); /**Configure the Systick */ HAL_SYSTICK_CLKSourceConfig(SYSTICK_CLKSOURCE_HCLK); /* SysTick_IRQn interrupt configuration */ HAL_NVIC_SetPriority(SysTick_IRQn, 0, 0); } �?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?There is no HSE crystal on this board.
Assuming you haven't changed any of the default solder bridges,the HSE signal comes from the MCO of the STLink (8mhz).
Cube project and generated files are attached.
________________ Attachments : N144-767.zip : https://st--c.eu10.content.force.com/sfc/dist/version/download/?oid=00Db0000000YtG6&ids=0680X000006HyKz&d=%2Fa%2F0X0000000b6B%2FA4n0OsXSNfILcbFwD8cD6meQyZ50Wwsmyn4w3.QYSeg&asPdf=false
