Beispiel #1
0
/**
 * @brief   ADC DMA ISR service routine.
 *
 * @param[in] adcp      pointer to the @p ADCDriver object
 * @param[in] flags     pre-shifted content of the ISR register
 */
static void adc_lld_serve_rx_interrupt(ADCDriver *adcp, uint32_t flags) {

  /* DMA errors handling.*/
  if ((flags & (STM32_DMA_ISR_TEIF | STM32_DMA_ISR_DMEIF)) != 0) {
    /* DMA, this could help only if the DMA tries to access an unmapped
       address space or violates alignment rules.*/
    _adc_isr_error_code(adcp, ADC_ERR_DMAFAILURE);
  }
  else {
    /* It is possible that the conversion group has already be reset by the
       ADC error handler, in this case this interrupt is spurious.*/
    if (adcp->grpp != NULL) {

      /* DMA buffer invalidation because data cache.*/
      dmaBufferInvalidate(adcp->samples,
                          adcp->samples +
                         (adcp->depth * adcp->grpp->num_channels));

      if ((flags & STM32_DMA_ISR_TCIF) != 0) {
        /* Transfer complete processing.*/
        _adc_isr_full_code(adcp);
      }
      else if ((flags & STM32_DMA_ISR_HTIF) != 0) {
        /* Half transfer processing.*/
        _adc_isr_half_code(adcp);
      }
    }
  }
}
Beispiel #2
0
/**
 * @brief   Shared ADC DMA ISR service routine.
 *
 * @param[in] adcp      pointer to the @p ADCDriver object
 * @param[in] flags     pre-shifted content of the ISR register
 */
static void adc_lld_serve_rx_interrupt(ADCDriver *adcp, uint32_t flags) {

  /* DMA errors handling.*/
  if ((flags & STM32_DMA_ISR_TEIF) != 0) {
    /* DMA, this could help only if the DMA tries to access an unmapped
       address space or violates alignment rules.*/
    _adc_isr_error_code(adcp, ADC_ERR_DMAFAILURE);
  }
  else {
    if ((flags & STM32_DMA_ISR_TCIF) != 0) {
      /* Transfer complete processing.*/
      _adc_isr_full_code(adcp);
    }
    else if ((flags & STM32_DMA_ISR_HTIF) != 0) {
      /* Half transfer processing.*/
      _adc_isr_half_code(adcp);
    }
  }
}