Initial Commit

1 files changed, 57 insertions, 0 deletions

diff --git a/VexRiscvSocSoftware/projects/briey/vga/src/main.c b/VexRiscvSocSoftware/projects/briey/vga/src/main.c
new file mode 100755
index 0000000..5501821
--- /dev/null
+++ b/VexRiscvSocSoftware/projects/briey/vga/src/main.c
@@ -0,0 +1,57 @@
+#include <stdio.h>
+#include <string.h>
+#include <stdint.h>
+#include <stdlib.h>
+
+#include <briey.h>
+
+#define RES_X 640
+#define RES_Y 480
+
+//#define RES_X 160
+//#define RES_Y 120
+
+//#define RES_X 48
+//#define RES_Y 32
+
+__attribute__ ((section (".noinit"))) __attribute__ ((aligned (4*8))) uint16_t vgaFramebuffer[RES_Y][RES_X];
+
+extern void flushDataCache(uint32_t dummy);
+
+int main() {
+	Uart_Config uartConfig;
+	uartConfig.dataLength = 8;
+	uartConfig.parity = NONE;
+	uartConfig.stop = ONE;
+	uartConfig.clockDivider = 50000000/8/115200-1;
+	uart_applyConfig(UART,&uartConfig);
+
+
+    vga_stop(VGA_BASE);
+    VGA_BASE->TIMING = vga_h640_v480_r60;  // vga_simRes   vga_h640_v480_r60 vga_simRes_h160_v120
+    VGA_BASE->FRAME_SIZE = RES_X*RES_Y*2-1;
+    VGA_BASE->FRAME_BASE = (uint32_t)vgaFramebuffer;
+    vga_run(VGA_BASE);
+
+    uint16_t offset = 0;
+    while(1){
+    	uint16_t *ptr = &vgaFramebuffer[0][0];
+    	for(uint32_t y = 0;y < RES_Y;y++){
+    		uint16_t c = (((y + offset) & 0x1F) << 6);
+        	for(uint32_t x = 0;x < RES_X;x++){
+        		*ptr = ((uint16_t)(x & 0x1F)) + c;
+        		ptr++;
+        	}
+    	}
+    	offset+=4;
+    	flushDataCache(0);
+    	uart_write(UART, '\n');
+    }
+}
+
+
+void irqCallback(){
+
+}
+
+