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STM32 RTC : Start LSI clock asap

pull/8341/head
jeromecoutant 2018-09-11 14:04:03 +02:00 committed by adbridge
parent 3d7f99775a
commit 8d995f3817
1 changed files with 16 additions and 0 deletions
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16
targets/TARGET_STM/mbed_overrides.c
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@ -54,5 +54,21 @@ void mbed_sdk_init()
SetSysClock(); SetSysClock();
SystemCoreClockUpdate(); SystemCoreClockUpdate();
/* Start LSI clock for RTC */
#if DEVICE_RTC
#if !MBED_CONF_TARGET_LSE_AVAILABLE
RCC_OscInitTypeDef RCC_OscInitStruct = {0};
if (__HAL_RCC_GET_RTC_SOURCE() != RCC_RTCCLKSOURCE_NO_CLK) {
RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_LSI;
RCC_OscInitStruct.PLL.PLLState = RCC_PLL_NONE;
RCC_OscInitStruct.LSIState = RCC_LSI_ON;
if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK) {
error("Init : cannot initialize LSI\n");
}
}
#endif /* ! MBED_CONF_TARGET_LSE_AVAILABLE */
#endif /* DEVICE_RTC */
mbed_sdk_inited = 1; mbed_sdk_inited = 1;
} }