From 69c6db98f12f1fe103a1177ec37444bc3024645f Mon Sep 17 00:00:00 2001
From: Daniel Friesel <derf@finalrewind.org>
Date: Fri, 12 Oct 2018 10:45:24 +0200
Subject: [PATCH] arduino nano: ignore non-timer interrupts for loop
---
src/arch/arduino-nano/arch.cc | 20 +++++++++++++++-----
1 file changed, 15 insertions(+), 5 deletions(-)
diff --git a/src/arch/arduino-nano/arch.cc b/src/arch/arduino-nano/arch.cc
index 7f18c38..3009637 100644
--- a/src/arch/arduino-nano/arch.cc
+++ b/src/arch/arduino-nano/arch.cc
@@ -32,10 +32,14 @@ void wakeup();
#if defined(WITH_LOOP) || defined(TIMER_S)
#include "driver/uptime.h"
-void loop();
#endif
+#if defined(WITH_LOOP)
+extern void loop();
+volatile char run_loop = 0;
+#endif
+
void Arch::idle_loop(void)
{
while (1) {
@@ -44,13 +48,13 @@ void Arch::idle_loop(void)
SMCR = 0;
asm("wdr");
#ifdef WITH_LOOP
- loop();
+ if (run_loop) {
+ loop();
+ run_loop = 0;
+ }
#endif
#ifdef WITH_WAKEUP
wakeup();
-#endif
-#ifdef TIMER_S
- uptime.tick_s();
#endif
}
}
@@ -79,6 +83,12 @@ Arch arch;
ISR(TIMER1_COMPA_vect)
{
+#ifdef WITH_LOOP
+ run_loop = 1;
+#endif
+#ifdef TIMER_S
+ uptime.tick_s();
+#endif
}
#endif
--
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