irq: Support sleeping when mcu is idle

Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
2017-07-12 22:16:16 -04:00
parent 969485c754
commit 118fd21cb8
13 changed files with 101 additions and 10 deletions
--- a/src/avr/irq.h
+++ b/src/avr/irq.h
@@ -28,6 +28,10 @@ static inline void irq_restore(irqstatus_t flag) {
    SREG = flag;
 }

+static inline void irq_wait(void) {
+    asm("sei\n    sleep\n    cli" : : : "memory");
+}
+
 static inline void irq_poll(void) {
 }