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stmhal: Fix clock initialisation of L4 MCUs.

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There are 2 changes:
- remove early initialisation of LSE and replaced it by LSEDRIVE config
  (there is no reason to call HAL_RCC_OscConfig twice).
- add initialisation of the variables PLLSAI1Source and PLLSAI1M as they
  are needed in Cube HAL 1.8.1.
This commit is contained in:
Tobias Badertscher 2017-09-02 19:46:23 +02:00 committed by Damien George
parent 689dae1211
commit 98da3cf407
1 changed files with 4 additions and 6 deletions
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10
stmhal/system_stm32.c
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@ -331,12 +331,8 @@ void SystemClock_Config(void)
regarding system frequency refer to product datasheet. */
__HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE1);
#elif defined(MCU_SERIES_L4)
/* Enable the LSE Oscillator */
RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_LSE;
RCC_OscInitStruct.LSEState = RCC_LSE_ON;
if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK) {
__fatal_error("HAL_RCC_OscConfig");
}
// Configure LSE Drive Capability
__HAL_RCC_LSEDRIVE_CONFIG(RCC_LSEDRIVE_LOW);
#endif
/* Enable HSE Oscillator and activate PLL with HSE as source */
@ -464,6 +460,8 @@ void SystemClock_Config(void)
PeriphClkInitStruct.UsbClockSelection = RCC_USBCLKSOURCE_PLLSAI1;
PeriphClkInitStruct.RTCClockSelection = RCC_RTCCLKSOURCE_LSE;
PeriphClkInitStruct.RngClockSelection = RCC_RNGCLKSOURCE_PLLSAI1;
PeriphClkInitStruct.PLLSAI1.PLLSAI1Source = RCC_PLLSOURCE_MSI;
PeriphClkInitStruct.PLLSAI1.PLLSAI1M = 1;
PeriphClkInitStruct.PLLSAI1.PLLSAI1N = 24;
PeriphClkInitStruct.PLLSAI1.PLLSAI1P = RCC_PLLP_DIV7;
PeriphClkInitStruct.PLLSAI1.PLLSAI1Q = RCC_PLLQ_DIV2;