generic_clock.c

/*
 *******************************************************************************
 * Copyright (c) 2020, STMicroelectronics
 * All rights reserved.
 *
 * This software component is licensed by ST under BSD 3-Clause license,
 * the "License"; You may not use this file except in compliance with the
 * License. You may obtain a copy of the License at:
 *                        opensource.org/licenses/BSD-3-Clause
 *
 *******************************************************************************
 */
#if defined(ARDUINO_GENERIC_C011J4MX) || defined(ARDUINO_GENERIC_C011J6MX)
#include "pins_arduino.h"

/**
  * @brief  System Clock Configuration
  * @param  None
  * @retval None
  */
WEAK void SystemClock_Config(void)
{
  LL_FLASH_SetLatency(LL_FLASH_LATENCY_1);

  /* HSI configuration and activation */
  LL_RCC_HSI_Enable();
  while (LL_RCC_HSI_IsReady() != 1) {
  }

  LL_RCC_HSI_SetCalibTrimming(64);
  LL_RCC_SetHSIDiv(LL_RCC_HSI_DIV_1);
  /* Set AHB prescaler*/
  LL_RCC_SetAHBPrescaler(LL_RCC_HCLK_DIV_1);

  /* Sysclk activation on the HSI */
  LL_RCC_SetSysClkSource(LL_RCC_SYS_CLKSOURCE_HSI);
  while (LL_RCC_GetSysClkSource() != LL_RCC_SYS_CLKSOURCE_STATUS_HSI) {
  }

  /* Set APB1 prescaler*/
  LL_RCC_SetAPB1Prescaler(LL_RCC_APB1_DIV_1);
  /* Update CMSIS variable (which can be updated also through SystemCoreClockUpdate function) */
  LL_SetSystemCoreClock(48000000);

  /* Update the time base */
  if (HAL_InitTick(TICK_INT_PRIORITY) != HAL_OK) {
    Error_Handler();
  }
}

#endif /* ARDUINO_GENERIC_* */