From 0ab0ebf8cbf38649c1d4837ce56c314154b7093c Mon Sep 17 00:00:00 2001
From: tmk <hasu@tmk-kbd.com>
Date: Thu, 21 May 2020 15:41:34 +0900
Subject: [PATCH] core: Make TIMER0 ISR noblock

The TIMER0 ISR takes 1.5us and can affect IBMPC protocol ISR.
Add ISR_NOBLOCK to allow interrupt during TIMER0 ISR.
---
 tmk_core/common/avr/timer.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tmk_core/common/avr/timer.c b/tmk_core/common/avr/timer.c
index 1aa4a6a8..9be3fa8b 100644
--- a/tmk_core/common/avr/timer.c
+++ b/tmk_core/common/avr/timer.c
@@ -115,7 +115,7 @@ uint32_t timer_elapsed32(uint32_t last)
 }
 
 // excecuted once per 1ms.(excess for just timer count?)
-ISR(TIMER0_COMPA_vect)
+ISR(TIMER0_COMPA_vect, ISR_NOBLOCK)
 {
     timer_count++;
 }
-- 
2.46.2