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Diffstat (limited to 'common/avr/suspend_avr.h')
-rw-r--r--common/avr/suspend_avr.h27
1 files changed, 27 insertions, 0 deletions
diff --git a/common/avr/suspend_avr.h b/common/avr/suspend_avr.h
new file mode 100644
index 0000000000..357102da44
--- /dev/null
+++ b/common/avr/suspend_avr.h
@@ -0,0 +1,27 @@
+#ifndef SUSPEND_AVR_H
+#define SUSPEND_AVR_H
+
+#include <stdint.h>
+#include <stdbool.h>
+#include <avr/sleep.h>
+#include <avr/wdt.h>
+#include <avr/interrupt.h>
+
+
+#define wdt_intr_enable(value) \
+__asm__ __volatile__ ( \
+ "in __tmp_reg__,__SREG__" "\n\t" \
+ "cli" "\n\t" \
+ "wdr" "\n\t" \
+ "sts %0,%1" "\n\t" \
+ "out __SREG__,__tmp_reg__" "\n\t" \
+ "sts %0,%2" "\n\t" \
+ : /* no outputs */ \
+ : "M" (_SFR_MEM_ADDR(_WD_CONTROL_REG)), \
+ "r" (_BV(_WD_CHANGE_BIT) | _BV(WDE)), \
+ "r" ((uint8_t) ((value & 0x08 ? _WD_PS3_MASK : 0x00) | \
+ _BV(WDIE) | (value & 0x07)) ) \
+ : "r0" \
+)
+
+#endif