Make memory test code more verbose

diff --git a/examples/firmware/main.c b/examples/firmware/main.c
index 6c12a4ec65a840767aabfd73e29348b88895f410..4ede1957f60364f53e09ed8da28a28cc5b0902ed 100644 (file)
--- a/examples/firmware/main.c
+++ b/examples/firmware/main.c
@@ -40,6 +40,26 @@ void uart_writestr(const char *c) {
        }
 }
 
+void memcpy(void *dest, void *src, size_t n) {
+   int i;
+   //cast src and dest to char*
+   char *src_char = (char *)src;
+   char *dest_char = (char *)dest;
+   for (i=0; i<n; i++)
+      dest_char[i] = src_char[i]; //copy contents byte by byte
+}
+
+void uart_writeuint32(uint32_t val) {
+       const char lut[] = { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A', 'B', 'C', 'D', 'E', 'F' };
+       uint8_t *val_arr = &val;
+       size_t i;
+
+       for (i = 0; i < 4; i++) {
+               uart_write(lut[(val_arr[3-i] >> 4) & 0xF]);
+               uart_write(lut[val_arr[3-i] & 0xF]);
+       }
+}
+
 void isr(void) {
 
 }
@@ -52,15 +72,22 @@ int main(void) {
        gram_init(&ctx, (void*)0x10000000, (void*)0x00009000, (void*)0x00008000);
        uart_writestr("done\n");
 
-       uart_writestr("DRAM test... ");
+       uart_writestr("DRAM test... \n");
        volatile uint32_t *ram = 0x10000000;
        for (size_t i = 0; i < 1000; i++) {
-               ram[i] = 0xdeadbeef << (i%32);
+               uart_writestr("Writing to 0x");
+               uart_writeuint32(&ram[i]);
+               uart_write('\n');
+               ram[i] = 0xaaaaaaaa;
        }
 
        for (size_t i = 0; i < 1000; i++) {
-               if (ram[i] != 0xdeadbeef << (i%32)) {
-                       uart_writestr("fail\n");
+               if (ram[i] != 0xdeadbeef) {
+                       uart_writestr("fail : *(0x");
+                       uart_writeuint32(&ram[i]);
+                       uart_writestr(") = ");
+                       uart_writeuint32(ram[i]);
+                       uart_write('\n');
                }
        }
        uart_writestr("done\n");