From d1b7415563c4bdbedcaad1dc7e159ea54ebadc34 Mon Sep 17 00:00:00 2001
From: Pavel 'LEdoian' Turinsky <ledoian@matfyz.cz>
Date: Mon, 13 Apr 2020 03:51:07 +0200
Subject: [PATCH] Reimplement the initial wait

---
 main.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/main.c b/main.c
index 122b650..0452b18 100644
--- a/main.c
+++ b/main.c
@@ -19,8 +19,8 @@
 #define DELAY 4000000		// This is bad -- it's a value that was found to be OK
 #define STM32F1 1			// Needed for libopencm3
 
-enum {FORWARD, BACKWARD} direction;
-bool running = false;
+volatile enum {FORWARD, BACKWARD} direction;
+volatile bool running = false;
 
 void setup (void) {			// All the blackbox code
 
@@ -79,6 +79,9 @@ int main (void) {
 	char state = 0;
 	int i;
 
+	// Initial wait
+	while (!running) ;
+
 	while (true) {
 		for (i=0 ; i<DELAY ; i++) {
 			__asm ("nop");