Esempi in C++ (Cpp) per LL_RCC_PLL_GetN

Esempio n. 1

File: stm32f7xx_ll_rcc.c Progetto: sg-/mbed-os

/**
  * @brief  Return PLL clock frequency used for 48 MHz domain
  * @retval PLL clock frequency (in Hz)
  */
uint32_t RCC_PLL_GetFreqDomain_48M(void)
{
  uint32_t pllinputfreq = 0U, pllsource = 0U;

  /* PLL_VCO = (HSE_VALUE or HSI_VALUE / PLLM ) * PLLN
     48M Domain clock = PLL_VCO / PLLQ
  */
  pllsource = LL_RCC_PLL_GetMainSource();

  switch (pllsource)
  {
    case LL_RCC_PLLSOURCE_HSI:  /* HSI used as PLL clock source */
      pllinputfreq = HSI_VALUE;
      break;

    case LL_RCC_PLLSOURCE_HSE:  /* HSE used as PLL clock source */
      pllinputfreq = HSE_VALUE;
      break;

    default:
      pllinputfreq = HSI_VALUE;
      break;
  }
  return __LL_RCC_CALC_PLLCLK_48M_FREQ(pllinputfreq, LL_RCC_PLL_GetDivider(),
                                        LL_RCC_PLL_GetN(), LL_RCC_PLL_GetQ());
}

Esempio n. 2

File: stm32l4xx_ll_rcc.c Progetto: AlessandroA/mbed

/**
  * @brief  Return PLL clock frequency used for 48 MHz domain
  * @retval PLL clock frequency (in Hz)
  */
uint32_t RCC_PLL_GetFreqDomain_48M(void)
{
  uint32_t pllinputfreq = 0, pllsource = 0;

  /* PLL_VCO = (HSE_VALUE or HSI_VALUE or MSI_VALUE/ PLLM) * PLLN
     48M Domain clock = PLL_VCO / PLLQ
  */
  pllsource = LL_RCC_PLL_GetMainSource();

  switch (pllsource)
  {
    case LL_RCC_PLLSOURCE_MSI:  /* MSI used as PLL clock source */
      pllinputfreq = __LL_RCC_CALC_MSI_FREQ(LL_RCC_MSI_IsEnabledRangeSelect(),
                                    (LL_RCC_MSI_IsEnabledRangeSelect() ?
                                     LL_RCC_MSI_GetRange() :
                                     LL_RCC_MSI_GetRangeAfterStandby()));
      break;

    case LL_RCC_PLLSOURCE_HSI:  /* HSI used as PLL clock source */
      pllinputfreq = HSI_VALUE;
      break;

    case LL_RCC_PLLSOURCE_HSE:  /* HSE used as PLL clock source */
      pllinputfreq = HSE_VALUE;
      break;

    default:
      pllinputfreq = __LL_RCC_CALC_MSI_FREQ(LL_RCC_MSI_IsEnabledRangeSelect(),
                                    (LL_RCC_MSI_IsEnabledRangeSelect() ?
                                     LL_RCC_MSI_GetRange() :
                                     LL_RCC_MSI_GetRangeAfterStandby()));
      break;
  }
  return __LL_RCC_CALC_PLLCLK_48M_FREQ(pllinputfreq, LL_RCC_PLL_GetDivider(),
                                        LL_RCC_PLL_GetN(), LL_RCC_PLL_GetQ());
}