Ejemplos de rcc_get_ppre2 en C++ (Cpp)

Ejemplo n.º 1

Archivo: mcu_arch.c Proyecto: Merafour/paparazzi

/** @brief Get Timer clock frequency (before prescaling)
 * Only valid if using the internal clock for the timer.
 * Currently implemented for STM32F1x and STM32F405xx/407xx STM32F415xx/417xx.
 * Not valid for STM32F42xxx and STM32F43xxx.
 * @param[in] timer_peripheral Unsigned int32. Timer register address base
 * @return Unsigned int32. Timer base frequency
 */
uint32_t timer_get_frequency(uint32_t timer_peripheral)
{
  switch (timer_peripheral) {
      // Timers on high speed APB2
    case TIM1:
    case TIM8:
#ifdef TIM9
    case TIM9:
#endif
#ifdef TIM10
    case TIM10:
#endif
#ifdef TIM11
    case TIM11:
#endif
      if (!rcc_get_ppre2()) {
        /* without APB2 prescaler, runs at APB2 freq */
        return rcc_apb2_frequency;
      } else {
        /* with any ABP2 prescaler, runs at 2 * APB2 freq */
        return rcc_apb2_frequency * 2;
      }

      // timers on low speed APB1
    case TIM2:
    case TIM3:
    case TIM4:
    case TIM5:
    case TIM6:
    case TIM7:
#ifdef TIM12
    case TIM12:
#endif
#ifdef TIM13
    case TIM13:
#endif
#ifdef TIM14
    case TIM14:
#endif
      if (!rcc_get_ppre1()) {
        /* without APB1 prescaler, runs at APB1 freq */
        return rcc_apb1_frequency;
      } else {
        /* with any ABP1 prescaler, runs at 2 * APB1 freq */
        return rcc_apb1_frequency * 2;
      }
    default:
      // other timers currently not supported
      break;
  }
  return 0;
}

Ejemplo n.º 2

Archivo: mcu_arch.c Proyecto: Henricus-Basien/paparazzi

/** @brief Get Timer clock frequency (before prescaling)
 * Only valid if using the internal clock for the timer.
 * Currently implemented for STM32F1x and STM32F405xx/407xx STM32F415xx/417xx.
 * Not valid for STM32F42xxx and STM32F43xxx.
 * @param[in] timer_peripheral Unsigned int32. Timer register address base
 * @return Unsigned int32. Timer base frequency
 */
uint32_t timer_get_frequency(uint32_t timer_peripheral)
{
  switch (timer_peripheral) {
    // Timers on APB1
    case TIM1:
    case TIM8:
#ifdef TIM9
    case TIM9:
#endif
#ifdef TIM10
    case TIM10:
#endif
#ifdef TIM11
    case TIM11:
#endif
      if (!rcc_get_ppre2())
        // no APB2 prescaler
        return rcc_ppre2_frequency;
      else
        return rcc_ppre2_frequency * 2;

    // timers on APB2
    case TIM2:
    case TIM3:
    case TIM4:
    case TIM5:
    case TIM6:
    case TIM7:
#ifdef TIM12
    case TIM12:
#endif
#ifdef TIM13
    case TIM13:
#endif
#ifdef TIM14
    case TIM14:
#endif
      if (!rcc_get_ppre1())
        // no APB2 prescaler
        return rcc_ppre1_frequency;
      else
        return rcc_ppre1_frequency * 2;
    default:
      // other timers currently not supported
      break;
  }
  return 0;
}