I am working on stm32l053 (nucleo 64) and I want to track time with integrated RTC. Since I am quite new to stm32 development I am using CubeMX and HAL libraries.
My problem is that the time is not changing over time, the HAL_RTC_GetTime() function is always returning time that was configured at the beginning in the MX_RTC_Init() function generated by CubeMX.
Here is my code for testing: Vars:
RTC_TimeTypeDef currTime = {0};
in while
while (1)
{
/* USER CODE END WHILE */
/* USER CODE BEGIN 3 */
HAL_RTC_GetTime(&hrtc, &currTime, RTC_FORMAT_BIN);
char timeBuff[20];
sprintf(timeBuff,"%d,,,%d...%d\n", currTime.Hours, currTime.Minutes, currTime.Seconds);
HAL_UART_Transmit(&huart2, timeBuff, sizeof(timeBuff), 100);
HAL_Delay(1000);
}
And here is the generated MX_RTC_Init() function:
static void MX_RTC_Init(void)
{
/* USER CODE BEGIN RTC_Init 0 */
/* USER CODE END RTC_Init 0 */
RTC_TimeTypeDef sTime = {0};
RTC_DateTypeDef sDate = {0};
/* USER CODE BEGIN RTC_Init 1 */
/* USER CODE END RTC_Init 1 */
/** Initialize RTC Only
*/
hrtc.Instance = RTC;
hrtc.Init.HourFormat = RTC_HOURFORMAT_12;
hrtc.Init.AsynchPrediv = 127;
hrtc.Init.SynchPrediv = 255;
hrtc.Init.OutPut = RTC_OUTPUT_DISABLE;
hrtc.Init.OutPutRemap = RTC_OUTPUT_REMAP_NONE;
hrtc.Init.OutPutPolarity = RTC_OUTPUT_POLARITY_HIGH;
hrtc.Init.OutPutType = RTC_OUTPUT_TYPE_OPENDRAIN;
if (HAL_RTC_Init(&hrtc) != HAL_OK)
{
Error_Handler();
}
/* USER CODE BEGIN Check_RTC_BKUP */
/* USER CODE END Check_RTC_BKUP */
/** Initialize RTC and set the Time and Date
*/
sTime.Hours = 10;
sTime.Minutes = 15;
sTime.Seconds = 0;
sTime.TimeFormat = RTC_HOURFORMAT12_PM;
sTime.DayLightSaving = RTC_DAYLIGHTSAVING_NONE;
sTime.StoreOperation = RTC_STOREOPERATION_RESET;
if (HAL_RTC_SetTime(&hrtc, &sTime, RTC_FORMAT_BIN) != HAL_OK)
{
Error_Handler();
}
sDate.WeekDay = RTC_WEEKDAY_SATURDAY;
sDate.Month = RTC_MONTH_MAY;
sDate.Date = 25;
sDate.Year = 19;
if (HAL_RTC_SetDate(&hrtc, &sDate, RTC_FORMAT_BIN) != HAL_OK)
{
Error_Handler();
}
/** Enable the WakeUp
*/
if (HAL_RTCEx_SetWakeUpTimer_IT(&hrtc, 5, RTC_WAKEUPCLOCK_CK_SPRE_16BITS) != HAL_OK)
{
Error_Handler();
}
/* USER CODE BEGIN RTC_Init 2 */
/* USER CODE END RTC_Init 2 */
}
Serial output is:
10,,,15...0
10,,,15...0
10,,,15...0
10,,,15...0
10,,,15...0
10,,,15...0
10,,,15...0
10,,,15...0
10,,,15...0
10,,,15...0
10,,,15...0
.
.
.
PS. RTC WakeUp is working as expected so the RTC is counting but I guess it is not storing counts in registers.