uart_send_data.c

void uart_send_data(volatile void* data, int length) {
	dma_channel_reset(DMA1, DMA_CHANNEL4);

	dma_set_peripheral_address(DMA1, DMA_CHANNEL4, (uint32_t) &USART1_DR);
	dma_set_memory_address(DMA1, DMA_CHANNEL4, (uint32_t) data);
	dma_set_number_of_data(DMA1, DMA_CHANNEL4, length);
	dma_set_read_from_memory(DMA1, DMA_CHANNEL4);
	dma_enable_memory_increment_mode(DMA1, DMA_CHANNEL4);
	dma_set_peripheral_size(DMA1, DMA_CHANNEL4, DMA_CCR_PSIZE_8BIT);
	dma_set_memory_size(DMA1, DMA_CHANNEL4, DMA_CCR_MSIZE_8BIT);
	dma_set_priority(DMA1, DMA_CHANNEL4, DMA_CCR_PL_VERY_HIGH);

	dma_enable_channel(DMA1, DMA_CHANNEL4);
	usart_enable_tx_dma(USART1);

	while (!dma_get_interrupt_flag	(DMA1, DMA_CHANNEL4, DMA_TCIF));

}