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STM32 RTC init 

When LSE is configured for RTC, LSI is not affected
pull/6353/head
jeromecoutant 2018-03-14 11:12:29 +01:00
parent af46177a65
commit 2f86b3a7bb
1 changed files with 2 additions and 4 deletions
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6
targets/TARGET_STM/rtc_api.c
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@ -58,10 +58,9 @@ void rtc_init(void)
}
#if MBED_CONF_TARGET_LSE_AVAILABLE
RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_LSI | RCC_OSCILLATORTYPE_LSE;
RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_LSE;
RCC_OscInitStruct.PLL.PLLState = RCC_PLL_NONE; // Mandatory, otherwise the PLL is reconfigured!
RCC_OscInitStruct.LSEState = RCC_LSE_ON;
RCC_OscInitStruct.LSIState = RCC_LSI_OFF;
if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK) {
error("Cannot initialize RTC with LSE\n");
@ -81,9 +80,8 @@ void rtc_init(void)
__HAL_RCC_BACKUPRESET_RELEASE();
// Enable LSI clock
RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_LSI | RCC_OSCILLATORTYPE_LSE;
RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_LSI;
RCC_OscInitStruct.PLL.PLLState = RCC_PLL_NONE; // Mandatory, otherwise the PLL is reconfigured!
RCC_OscInitStruct.LSEState = RCC_LSE_OFF;
RCC_OscInitStruct.LSIState = RCC_LSI_ON;
if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK) {
error("Cannot initialize RTC with LSI\n");