uart small ping pong receive, update of register functions

[cortex-from-scratch] / main.c

diff --git a/main.c b/main.c
index 5b488cf..4134c95 100644 (file)
--- a/main.c
+++ b/main.c
@@ -1,7 +1,7 @@
 #include <stdbool.h>
 #include <stddef.h>
 #include <stdint.h>
-#include <stm32.h> // <-- your own header file located located in ./include
+#include <stm32.h> // <-- my own header file located located in ./include
 #include <mmap.h>
 
 
@@ -46,11 +46,26 @@ void main()
        ivt_init();
 //     clock_init();
        uart_init();
-       systick_init();
+//     systick_init();
        uart_puts("LOADING SYSTEM 0.1 ...\n");
        sysinfo();
-       addrtohex((volatile uint32_t) 0x12345678 );
-       addrtohex((volatile uint32_t) *SCB_VTOR );
+       mm_init();
+
+       //int * p2 = mm_alloc(512);
+       //memset(p2, 'a', 512);
+
+       //addrtohex(p2);
+       //addrtohex(*p2);
+
+       //uint32_t * p = (volatile unsigned)  0x21000000;
+       //regw_u32(p, 0x0CCCCCCCC, 4, 0x01);
+
+       //regw_u8(p, 0xFF, 0, 0x02);
+       
+       //addrtohex(*p);
+
+       //addrtohex((volatile uint32_t) 0x12345678 );
+       //addrtohex((volatile uint32_t) SCB_VTOR );
 
 //     asm("cpsie i"); // enable irq , cpsied f (disable faukts(