1 files changed, 8 insertions, 1 deletions
diff --git a/src/main.zig b/src/main.zig
index 8857583..deac169 100644
--- a/src/main.zig
+++ b/src/main.zig
@@ -1,6 +1,7 @@
 const cpu = @import("cpu.zig");
 const gpio = @import("gpio.zig");
 const interrupt = @import("interrupt.zig");
+const timer = @import("timer.zig");
 
 const rcc: *[39]u32 = @ptrFromInt(0x40021000);
 const gpioa = gpio.gpioa;
@@ -10,6 +11,7 @@ export fn _start() callconv(.C) noreturn {
     cpu.interrupt_disable();
     interrupt.initialize();
     interrupt.register(.SVCall, svcall);
+    timer.initialize(1000);
     cpu.interrupt_enable();
 
     rcc[19] |= 5; // gpio a and c
@@ -17,7 +19,12 @@ export fn _start() callconv(.C) noreturn {
     gpioc.set_mode(13, .input);
 
     while (true) {
-        asm volatile("svc 0");
+        //asm volatile("svc 0");
+        gpioa.toggle(5);
+        const next = timer.ticks() + 1000;
+        while (timer.ticks() < next) {
+            asm volatile("nop");
+        }
     }
 }