uint8_t spi_active(spi_t *obj)
{
switch(obj->spi.dmaOptionsTX.dmaUsageState) {
case DMA_USAGE_TEMPORARY_ALLOCATED:
return true;
case DMA_USAGE_ALLOCATED:
/* Check whether the allocated DMA channel is active */
return(DMA_ChannelEnabled(obj->spi.dmaOptionsTX.dmaChannel) || DMA_ChannelEnabled(obj->spi.dmaOptionsRX.dmaChannel));
default:
/* Check whether interrupt for spi is enabled */
return (obj->spi.spi->IEN & (USART_IEN_RXDATAV | USART_IEN_TXBL)) ? true : false;
}
}
/***************************************************************************//**
* @brief
* Check if a transfer is running.
*
* @param[in] channelId
* The channel Id of the transfer to check.
*
* @param[out] active
* True if transfer is running, false otherwise.
*
* @return
* @ref ECODE_EMDRV_DMADRV_OK on success. On failure an appropriate
* DMADRV @ref Ecode_t is returned.
******************************************************************************/
Ecode_t DMADRV_TransferActive( unsigned int channelId, bool *active )
{
if ( !initialized )
{
return ECODE_EMDRV_DMADRV_NOT_INITIALIZED;
}
if ( ( channelId > EMDRV_DMADRV_DMA_CH_COUNT )
|| ( active == NULL ) )
{
return ECODE_EMDRV_DMADRV_PARAM_ERROR;
}
if ( chTable[ channelId ].allocated == false )
{
return ECODE_EMDRV_DMADRV_CH_NOT_ALLOCATED;
}
#if defined( EMDRV_DMADRV_UDMA )
if ( DMA_ChannelEnabled( channelId ) )
#elif defined( EMDRV_DMADRV_LDMA )
if ( LDMA->CHEN & ( 1 << channelId ) )
#endif
{
*active = true;
}
else
{
*active = false;
}
return ECODE_EMDRV_DMADRV_OK;
}
