Replaced blocking SPI framebuffer transmission with DMA-driven transfer.

Replaced blocking spi_write_blocking() framebuffer transfer with DMA.

- Switched SPI to 8-bit mode
- Configured DMA channel with SPI DREQ
- Moved FIFO signaling to DMA completion IRQ
- Removed blocking framebuffer transmission
- Preserved command/data SPI operations

main.h

@@ -1,4 +1,5 @@
 
-#include <stdio.h>
+//#include <stdio.h>
+#include <stdint.h>
 void fillBufer (uint16_t* buffer,uint16_t color);
 //unsigned short reverse(unsigned short x);