Got the DMA to work! (That was surprisingly easy).

1 files changed, 17 insertions, 1 deletions

diff --git a/src/main.c b/src/main.c
index 8bf8e15..5f883f9 100644
--- a/src/main.c
+++ b/src/main.c
@@ -1,6 +1,7 @@
 #include <stdint.h>
 #include <stdio.h>
 
+#include "string.h"
 #include "ch573/gpio.h"
 #include "ch573/pwr.h"
 #include "ch573/uart.h"
@@ -127,9 +128,24 @@ int main(void)
 {
   printf("Running SPI.\n");
 
+  set_system_clock_60Mhz();
+
   enable_spi();
 
-  run_spi();
+  char buf[1024];
+  memset(buf, 0xf0, sizeof(buf));
+  for (int i = 0; i < 50; ++ i) {
+    buf[i] = 0xaa;
+    buf[sizeof(buf) - i] = 0xaa;
+  }
+
+  while (1) {
+    printf("Xfer.\n");
+    dma_transfer(buf, sizeof(buf));
+    wait_for_dma();
+  }
+
+  // run_spi();
 
   // GPIO_PORT.dir.set(GPIO_PORT_A, DIR_OUT, 8);
   // GPIO_PORT.pd_drv.set(GPIO_PORT_A, 0, 8);