From f636085dbf565ffee58fb90531e7cb8d2af06341 Mon Sep 17 00:00:00 2001
From: Pol Henarejos <pol.henarejos@cttc.es>
Date: Fri, 31 Mar 2023 00:40:37 +0200
Subject: [PATCH] Fix potential freeze.

For unknown reason, button cannot be checked if USB is active, as it is stalled.

Signed-off-by: Pol Henarejos <pol.henarejos@cttc.es>
---
 src/main.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/src/main.c b/src/main.c
index aba7634..5f30a48 100644
--- a/src/main.c
+++ b/src/main.c
@@ -136,6 +136,10 @@ void timeout_start() {
     timeout = board_millis();
 }
 
+bool is_busy() {
+    return timeout > 0;
+}
+
 void execute_tasks();
 
 static bool req_button_pending = false;
@@ -310,7 +314,7 @@ int main(void) {
         neug_task();
         do_flash();
 #ifndef ENABLE_EMULATION
-        if (board_millis() > 1000) { // wait 1 second to boot up
+        if (board_millis() > 1000 && !is_busy()) { // wait 1 second to boot up
             bool current_button_state = board_button_read();
             if (current_button_state != button_pressed_state) {
                 if (current_button_state == false) { // unpressed