/**
* \brief DMA driver configuration
*/
static void _initialize_dma(void)
{
/* Driver initialize */
xdmad_initialize(false);
/* Allocate DMA TX channels for CLASSD */
dma_channel = xdmad_allocate_channel(XDMAD_PERIPH_MEMORY, ID_CLASSD);
if (dma_channel)
{
printf("DMA channel allocated\n\r");
xdmad_prepare_channel(dma_channel);
} else {
printf("DMA channel allocation error\n\r");
}
}
/**
* \brief dma Application entry point
* \return Unused (ANSI-C compatibility)
*/
extern int main(void)
{
uint8_t key;
bool configured = false;
/* Output example information */
console_example_info("XDMA Example");
/* Allocate a XDMA channel. */
xdmad_channel = xdmad_allocate_channel(XDMAD_PERIPH_MEMORY, XDMAD_PERIPH_MEMORY);
if (!xdmad_channel) {
printf("-E- Can't allocate XDMA channel\n\r");
return 0;
}
/* Display menu */
_display_menu();
while (1) {
key = console_get_char();
if (key >= 'a' && key <= 'd') {
dma_data_width = key - 'a';
_display_menu();
} else if (key >= '0' && key <= '3') {
dma_src_addr_mode = key - '0';
_display_menu();
} else if (key >= '4' && key <= '7') {
dma_dest_addr_mode = key - '4';
_display_menu();
} else if (key >= '8' && key <= '9') {
dma_memset = key - '8';
if (dma_memset == 0 && dma_view == 0) {
printf("-I- DMA View 0 cannot be used when MEMSET is in NORMAL mode, selecting DMA View 1 instead.\r\n");
dma_view = 1;
}
_display_menu();
}
else if (key >= 'e' && key <= 'h') {
dma_view = key - 'e';
if (dma_view == 0 && dma_memset == 0) {
printf("-I- DMA View 0 can only be used when MEMSET is in HW mode, enabling HW mode.\r\n");
dma_memset = 1;
}
_display_menu();
} else if (key == 'S' || key == 's') {
dma_mode = 1;
_configure_transfer();
configured = true;
} else if (key == 'M' || key == 'm') {
dma_mode = 2;
_configure_transfer();
configured = true;
} else if (key == 'L' || key == 'l') {
dma_mode = 3;
_configure_transfer();
configured = true;
} else if (key == 'H') {
_display_menu();
} else if (configured && (key == 'T' || key == 't')) {
printf("-I- Start XDMA transfer\n\r");
_start_dma_transfer();
configured = false;
}
}
}
