Exemple #1
0
void mew_bluetooth_transmit(uint8_t* data, uint16_t size, uint8_t sync_mode) {
    mew_check_dma_memory((void*)data, "mew_bluetooth_transmit");
    
    mew_wait_for_state(&_mew_dma_tx_state, 0);
    _mew_dma_tx_state = 1;
    
    dma_stream_reset(MEW_BLUETOOTH_DMA, MEW_BLUETOOTH_DMA_STREAM_TX);
    dma_set_transfer_mode(MEW_BLUETOOTH_DMA, MEW_BLUETOOTH_DMA_STREAM_TX, DMA_SxCR_DIR_MEM_TO_PERIPHERAL);
    dma_set_priority(MEW_BLUETOOTH_DMA,  MEW_BLUETOOTH_DMA_STREAM_TX, DMA_SxCR_PL_HIGH);
    dma_set_memory_size(MEW_BLUETOOTH_DMA, MEW_BLUETOOTH_DMA_STREAM_TX, DMA_SxCR_MSIZE_8BIT);
    dma_set_peripheral_size(MEW_BLUETOOTH_DMA, MEW_BLUETOOTH_DMA_STREAM_TX, DMA_SxCR_PSIZE_8BIT);
    dma_enable_memory_increment_mode(MEW_BLUETOOTH_DMA, MEW_BLUETOOTH_DMA_STREAM_TX);
    dma_set_peripheral_address(MEW_BLUETOOTH_DMA, MEW_BLUETOOTH_DMA_STREAM_TX, (uint32_t) &MEW_BLUETOOTH_DMA_DR);
    dma_channel_select(MEW_BLUETOOTH_DMA, MEW_BLUETOOTH_DMA_STREAM_TX, MEW_BLUETOOTH_DMA_CHANNEL_TX);
    dma_set_memory_address(MEW_BLUETOOTH_DMA, MEW_BLUETOOTH_DMA_STREAM_TX, (uint32_t) data);
    dma_set_number_of_data(MEW_BLUETOOTH_DMA, MEW_BLUETOOTH_DMA_STREAM_TX, size);
    dma_disable_fifo_error_interrupt(MEW_BLUETOOTH_DMA, MEW_BLUETOOTH_DMA_STREAM_TX);
    dma_disable_half_transfer_interrupt(MEW_BLUETOOTH_DMA, MEW_BLUETOOTH_DMA_STREAM_TX);
    dma_enable_transfer_complete_interrupt(MEW_BLUETOOTH_DMA, MEW_BLUETOOTH_DMA_STREAM_TX);
    dma_enable_transfer_error_interrupt(MEW_BLUETOOTH_DMA,    MEW_BLUETOOTH_DMA_STREAM_TX);
    dma_enable_transfer_complete_interrupt(MEW_BLUETOOTH_DMA, MEW_BLUETOOTH_DMA_STREAM_TX);
    
    __mew_bluetooth_clear_buf();
    
    dma_enable_stream(MEW_BLUETOOTH_DMA, MEW_BLUETOOTH_DMA_STREAM_TX);
    
    if (sync_mode == 1) {
        mew_wait_for_state(&_mew_dma_tx_state, 0);
    }
}
Exemple #2
0
static void __spi_dma_start(uint32_t stream)
{
    /* XXX: Possible spurious interrupts on good transfers on FEIF? */
    dma_disable_fifo_error_interrupt(DMA1, stream);
    dma_disable_half_transfer_interrupt(DMA1, stream);

    dma_enable_transfer_complete_interrupt(DMA1, stream);
    dma_enable_transfer_error_interrupt(DMA1,    stream);
    dma_enable_transfer_complete_interrupt(DMA1, stream);
    dma_enable_stream(DMA1, stream);
}