void platform_uart_rx_dma_irq( platform_uart_driver_t* driver )
{
if ( ( get_dma_irq_status( driver->peripheral->rx_dma_config.stream ) & driver->peripheral->rx_dma_config.complete_flags ) != 0 )
{
clear_dma_interrupts( driver->peripheral->rx_dma_config.stream, driver->peripheral->rx_dma_config.complete_flags );
driver->last_receive_result = kNoErr;
}
if ( ( get_dma_irq_status( driver->peripheral->rx_dma_config.stream ) & driver->peripheral->rx_dma_config.error_flags ) != 0 )
{
clear_dma_interrupts( driver->peripheral->rx_dma_config.stream, driver->peripheral->rx_dma_config.error_flags );
driver->last_receive_result = kGeneralErr;
}
if ( driver->rx_size > 0 )
{
/* Set semaphore regardless of result to prevent waiting thread from locking up */
mico_rtos_set_semaphore( &driver->rx_complete );
}
}
static OSStatus spi_dma_transfer( const platform_spi_t* spi, const platform_spi_config_t* config )
{
/* Enable dma channels that have just been configured */
DMA_Cmd( spi->rx_dma.stream, ENABLE );
DMA_Cmd( spi->tx_dma.stream, ENABLE );
/* Wait for DMA to complete */
/* TODO: This should wait on a semaphore that is triggered from an IRQ */
while ( ( get_dma_irq_status( spi->rx_dma.stream ) & spi->rx_dma.complete_flags ) == 0 )
{
}
return kNoErr;
}
void platform_uart_tx_dma_irq( platform_uart_driver_t* driver )
{
if ( ( get_dma_irq_status( driver->peripheral->tx_dma_config.stream ) & driver->peripheral->tx_dma_config.complete_flags ) != 0 )
{
clear_dma_interrupts( driver->peripheral->tx_dma_config.stream, driver->peripheral->tx_dma_config.complete_flags );
driver->last_transmit_result = kNoErr;
}
if ( ( get_dma_irq_status( driver->peripheral->tx_dma_config.stream ) & driver->peripheral->tx_dma_config.error_flags ) != 0 )
{
clear_dma_interrupts( driver->peripheral->tx_dma_config.stream, driver->peripheral->tx_dma_config.error_flags );
driver->last_transmit_result = kGeneralErr;
}
if ( driver->tx_size > 0 )
{
#ifndef NO_MICO_RTOS
/* Set semaphore regardless of result to prevent waiting thread from locking up */
mico_rtos_set_semaphore( &driver->tx_complete );
#else
driver->tx_complete = true;
#endif
}
}
