Question
STM32H7S3L8 USB core reset timeout
Hey, we have purchased the Nucleo board H7S3L8-B02. We always run in a timeout during USB core reset. This problem seems quite popular with multiple forum posts. However we still didn't manage to get it to run. I will give a set by step explanation of what we've done. Maybe someone catches the mistake. We made all of our settings in "Application", none in "Boot".
- USB_OTG_FS settings:
USB_OTG_FS - Middleware CDC settings:
CDC
- Power settings:
PWR - Clock settings (automatic by IDE)
CLK
- main.c:
/* Includes ------------------------------------------------------------------*/
#include "main.h"
#include "usb_device.h"
/* Private function prototypes -----------------------------------------------*/
static void MPU_Config(void);
static void MX_GPIO_Init(void);
int main(void)
{
MPU_Config();
/* Update SystemCoreClock variable according to RCC registers values. */
SystemCoreClockUpdate();
/* Reset of all peripherals, Initializes the Flash interface and the Systick. */
HAL_Init();
/* Initialize all configured peripherals */
MX_GPIO_Init();
MX_USB_DEVICE_Init();
while (1)
{
/* USER CODE END WHILE */
/* USER CODE BEGIN 3 */
}
/* USER CODE END 3 */
}
static void MX_GPIO_Init(void)
{
/* GPIO Ports Clock Enable */
__HAL_RCC_GPIOM_CLK_ENABLE();
}
/* MPU Configuration */
static void MPU_Config(void)
{
MPU_Region_InitTypeDef MPU_InitStruct = {0};
/* Disables the MPU */
HAL_MPU_Disable();
/* Disables all MPU regions */
for(uint8_t i=0; i<__MPU_REGIONCOUNT; i++)
{
HAL_MPU_DisableRegion(i);
}
/** Initializes and configures the Region and the memory to be protected
*/
MPU_InitStruct.Enable = MPU_REGION_ENABLE;
MPU_InitStruct.Number = MPU_REGION_NUMBER0;
MPU_InitStruct.BaseAddress = 0x0;
MPU_InitStruct.Size = MPU_REGION_SIZE_4GB;
MPU_InitStruct.SubRegionDisable = 0x87;
MPU_InitStruct.TypeExtField = MPU_TEX_LEVEL0;
MPU_InitStruct.AccessPermission = MPU_REGION_NO_ACCESS;
MPU_InitStruct.DisableExec = MPU_INSTRUCTION_ACCESS_DISABLE;
MPU_InitStruct.IsShareable = MPU_ACCESS_SHAREABLE;
MPU_InitStruct.IsCacheable = MPU_ACCESS_NOT_CACHEABLE;
MPU_InitStruct.IsBufferable = MPU_ACCESS_NOT_BUFFERABLE;
HAL_MPU_ConfigRegion(&MPU_InitStruct);
/* Enables the MPU */
HAL_MPU_Enable(MPU_PRIVILEGED_DEFAULT);
}
void Error_Handler(void)
{
__disable_irq();
while (1)
{
}
}
#ifdef USE_FULL_ASSERT
void assert_failed(uint8_t *file, uint32_t line)
{
}
#endif /* USE_FULL_ASSERT */
_hal_msp.c
/* Includes ------------------------------------------------------------------*/
#include "main.h"
void HAL_MspInit(void)
{
PWR_PVDTypeDef sConfigPVD = {0};
/* System interrupt init*/
/** PVD Configuration
*/
sConfigPVD.PVDLevel = PWR_PVDLEVEL_1;
sConfigPVD.Mode = PWR_PVD_MODE_NORMAL;
HAL_PWR_ConfigPVD(&sConfigPVD);
/** Enable the PVD Output
*/
HAL_PWR_EnablePVD();
/* Enable USB Voltage detector */
if(HAL_PWREx_EnableUSBVoltageDetector() != HAL_OK)
{
/* Initialization error */
Error_Handler();
}
HAL_PWREx_EnableUSBReg();
}- usbd_conf.c
void HAL_PCD_MspInit(PCD_HandleTypeDef* pcdHandle)
{
GPIO_InitTypeDef GPIO_InitStruct = {0};
RCC_PeriphCLKInitTypeDef PeriphClkInit = {0};
if(pcdHandle->Instance==USB_OTG_FS)
{
/* USER CODE BEGIN USB_OTG_FS_MspInit 0 */
/* USER CODE END USB_OTG_FS_MspInit 0 */
/** Initializes the peripherals clock
*/
PeriphClkInit.PeriphClockSelection = RCC_PERIPHCLK_USBOTGFS;
PeriphClkInit.UsbOtgFsClockSelection = RCC_USBOTGFSCLKSOURCE_HSI48;
if (HAL_RCCEx_PeriphCLKConfig(&PeriphClkInit) != HAL_OK)
{
Error_Handler();
}
/** Enable USB Voltage detector
*/
HAL_PWREx_EnableUSBVoltageDetector();
__HAL_RCC_GPIOM_CLK_ENABLE();
/**USB_OTG_FS GPIO Configuration
PM14 ------> USB_OTG_FS_VBUS
*/
GPIO_InitStruct.Pin = GPIO_PIN_14;
GPIO_InitStruct.Mode = GPIO_MODE_INPUT;
GPIO_InitStruct.Pull = GPIO_NOPULL;
HAL_GPIO_Init(GPIOM, &GPIO_InitStruct);
/* Peripheral clock enable */
__HAL_RCC_USB_OTG_FS_CLK_ENABLE();
__HAL_RCC_USBPHYC_CLK_ENABLE();
/* Peripheral interrupt init */
HAL_NVIC_SetPriority(OTG_FS_IRQn, 0, 0);
HAL_NVIC_EnableIRQ(OTG_FS_IRQn);
/* USER CODE BEGIN USB_OTG_FS_MspInit 1 */
/* USER CODE END USB_OTG_FS_MspInit 1 */
}
}
- problem:
static HAL_StatusTypeDef USB_CoreReset(USB_OTG_GlobalTypeDef *USBx)
{
__IO uint32_t count = 0U;
/* Wait for AHB master IDLE state. */
do
{
count++;
if (count > HAL_USB_TIMEOUT)
{
return HAL_TIMEOUT;
}
} while ((USBx->GRSTCTL & USB_OTG_GRSTCTL_AHBIDL) == 0U);
/* Core Soft Reset */
count = 0U;
USBx->GRSTCTL |= USB_OTG_GRSTCTL_CSRST;
do
{
count++;
if (count > HAL_USB_TIMEOUT)
{
return HAL_TIMEOUT;
}
} while ((USBx->GRSTCTL & USB_OTG_GRSTCTL_CSRST) == USB_OTG_GRSTCTL_CSRST);
return HAL_OK;
}