Hi,
I'm using a SMT32H562ZGT6 uC with RTC pheripheral enabled and clock source from LSE. But HAL_RTC_Init() function returns HAL_TIMEOUT. Investigating I found the method RTC_EnterInitMode returns HAL_TIMEOUT.
Clock configuration is performed before calling the RTC initiazlization using The SystemClock_Config generated by cubeMX:
void BSP::SystemClock_Config(void)
{
RCC_OscInitTypeDef RCC_OscInitStruct = {0};
RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};
/** 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
* Warning : Only applied when the LSE is disabled.
*/
HAL_PWR_EnableBkUpAccess();
__HAL_RCC_LSEDRIVE_CONFIG(RCC_LSEDRIVE_LOW);
/** Initializes the RCC Oscillators according to the specified parameters
* in the RCC_OscInitTypeDef structure.
*/
RCC_OscInitStruct.OscillatorType =
RCC_OSCILLATORTYPE_HSI48 | RCC_OSCILLATORTYPE_LSI |
RCC_OSCILLATORTYPE_HSE | RCC_OSCILLATORTYPE_LSE;
RCC_OscInitStruct.HSEState = RCC_HSE_ON;
RCC_OscInitStruct.LSEState = RCC_LSE_ON;
RCC_OscInitStruct.LSIState = RCC_LSI_ON;
RCC_OscInitStruct.HSI48State = RCC_HSI48_ON;
RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
RCC_OscInitStruct.PLL.PLLSource = RCC_PLL1_SOURCE_HSE;
RCC_OscInitStruct.PLL.PLLM = 2;
RCC_OscInitStruct.PLL.PLLN = 40;
RCC_OscInitStruct.PLL.PLLP = 2;
RCC_OscInitStruct.PLL.PLLQ = 2;
RCC_OscInitStruct.PLL.PLLR = 2;
RCC_OscInitStruct.PLL.PLLRGE = RCC_PLL1_VCIRANGE_3;
RCC_OscInitStruct.PLL.PLLVCOSEL = RCC_PLL1_VCORANGE_WIDE;
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_PCLK3;
RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV1;
RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;
RCC_ClkInitStruct.APB3CLKDivider = RCC_HCLK_DIV1;
if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_5) != HAL_OK) {
Error_Handler();
}
/** Configure the programming delay
*/
__HAL_FLASH_SET_PROGRAM_DELAY(FLASH_PROGRAMMING_DELAY_2);
}
After that I'm initializing the RTC as follows:
bool RTC_C::initialize()
{
_RTCHandler.Instance = RTC;
_RTCHandler.Init.HourFormat = RTC_HOURFORMAT_24;
_RTCHandler.Init.AsynchPrediv = 127;
_RTCHandler.Init.SynchPrediv = 255;
_RTCHandler.Init.OutPut = RTC_OUTPUT_DISABLE;
_RTCHandler.Init.OutPutRemap = RTC_OUTPUT_REMAP_NONE;
_RTCHandler.Init.OutPutPolarity = RTC_OUTPUT_POLARITY_HIGH;
_RTCHandler.Init.OutPutType = RTC_OUTPUT_TYPE_OPENDRAIN;
_RTCHandler.Init.OutPutPullUp = RTC_OUTPUT_PULLUP_NONE;
_RTCHandler.Init.BinMode = RTC_BINARY_NONE;
if (HAL_RTC_Init(&_RTCHandler) != HAL_OK) {
return false;
}
RTC_PrivilegeStateTypeDef privilegeState = {0};
privilegeState.rtcPrivilegeFull = RTC_PRIVILEGE_FULL_NO;
privilegeState.backupRegisterPrivZone = RTC_PRIVILEGE_BKUP_ZONE_NONE;
privilegeState.backupRegisterStartZone2 = RTC_BKP_DR0;
privilegeState.backupRegisterStartZone3 = RTC_BKP_DR0;
if (HAL_RTCEx_PrivilegeModeSet(&_RTCHandler, &privilegeState) != HAL_OK) {
return false;
}
if (HAL_OK != HAL_RTC_WaitForSynchro(&_RTCHandler)) {
return false;
}
return true;
}
But initialization fails.
Can someone give me some hints? or have alredy experienced a similar issue?
Thank you in advance for the support.
