Use events to invoke menu handling on UART receive. We now have a basic

main dispatch loop.

main.c

@@ -159,21 +159,35 @@ void average_sample(void)
 	putstr(")\r\n");
 }
 
-int main(void) {
-	int i;
+void menu_handler(void);
 
+int main(void) {
 	init_interrupt();
 	init_uart();
 	init_i2c();
 	init_pins();
 	init_timer();
+
+	event_register(EVENT_UART_INPUT, menu_handler);
+
 	putstr("Your entire life has been a mathematical error... a mathematical error I'm about to correct!\r\n");
 
+	putstr("prompt> ");
+
 	while (1) {
-		char c;
-		putstr("prompt> ");
-		while (!getch(&c))
-			FP0XVAL ^= 0x04000000;
+		FP0XVAL ^= 0x04000000;
+		event_dispatch();
+	}
+
+	return 0;
+}
+
+void menu_handler(void)
+{
+	int i;
+	char c;
+
+	while (getch(&c)) {
 		if (c == 0x0a)
 			continue;
 		putch(c);
@@ -265,7 +279,6 @@ int main(void) {
 			reply("Unrecognised command.");
 			break;
 		}
+		putstr("prompt> ");
 	}
-
-	return 0;
 }