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-rw-r--r--common.mk2
-rw-r--r--common/sleep_led.h13
-rw-r--r--common/suspend.c51
-rw-r--r--common/suspend.h32
4 files changed, 97 insertions, 1 deletions
diff --git a/common.mk b/common.mk
index de1c6c3605..fa31b3c46d 100644
--- a/common.mk
+++ b/common.mk
@@ -10,6 +10,7 @@ SRC += $(COMMON_DIR)/host.c \
$(COMMON_DIR)/print.c \
$(COMMON_DIR)/debug.c \
$(COMMON_DIR)/bootloader.c \
+ $(COMMON_DIR)/suspend.c \
$(COMMON_DIR)/util.c
@@ -58,6 +59,7 @@ endif
ifdef SLEEP_LED_ENABLE
SRC += $(COMMON_DIR)/sleep_led.c
OPT_DEFS += -DSLEEP_LED_ENABLE
+ OPT_DEFS += -DNO_SUSPEND_POWER_DOWN
endif
diff --git a/common/sleep_led.h b/common/sleep_led.h
index aebdbeaa5a..6bdcf558a4 100644
--- a/common/sleep_led.h
+++ b/common/sleep_led.h
@@ -1,10 +1,21 @@
#ifndef SLEEP_LED_H
#define SLEEP_LED_H
-#define NO_SUSPEND_POWER_DOWN
+
+#ifdef SLEEP_LED_ENABLE
void sleep_led_init(void);
void sleep_led_enable(void);
void sleep_led_disable(void);
+void sleep_led_toggle(void);
+
+#else
+
+#define sleep_led_init()
+#define sleep_led_enable()
+#define sleep_led_disable()
+#define sleep_led_toggle()
+
+#endif
#endif
diff --git a/common/suspend.c b/common/suspend.c
new file mode 100644
index 0000000000..397e0729a6
--- /dev/null
+++ b/common/suspend.c
@@ -0,0 +1,51 @@
+#include "suspend.h"
+#include "matrix.h"
+#include "action.h"
+
+
+void suspend_power_down(void)
+{
+#ifndef NO_SUSPEND_POWER_DOWN
+ // Enable watchdog to wake from MCU sleep
+ cli();
+ wdt_reset();
+
+ // Watchdog Interrupt and System Reset Mode
+ //wdt_enable(WDTO_1S);
+ //WDTCSR |= _BV(WDIE);
+
+ // Watchdog Interrupt Mode
+ wdt_intr_enable(WDTO_120MS);
+
+ // TODO: more power saving
+ // See PicoPower application note
+ // - I/O port input with pullup
+ // - prescale clock
+ // - BOD disable
+ // - Power Reduction Register PRR
+ // sleep in power down mode
+ set_sleep_mode(SLEEP_MODE_PWR_DOWN);
+ sleep_enable();
+ sei();
+ sleep_cpu();
+ sleep_disable();
+
+ // Disable watchdog after sleep
+ wdt_disable();
+#endif
+}
+
+bool suspend_wakeup_condition(void)
+{
+ matrix_scan();
+ for (uint8_t r = 0; r < MATRIX_ROWS; r++) {
+ if (matrix_get_row(r)) return true;
+ }
+ return false;
+}
+
+void suspend_wakeup_init(void)
+{
+ matrix_init();
+ clear_keyboard();
+}
diff --git a/common/suspend.h b/common/suspend.h
new file mode 100644
index 0000000000..1c1e41ac3e
--- /dev/null
+++ b/common/suspend.h
@@ -0,0 +1,32 @@
+#ifndef SUSPEND_H
+#define SUSPEND_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" \
+)
+
+
+void suspend_power_down(void);
+bool suspend_wakeup_condition(void);
+void suspend_wakeup_init(void);
+
+#endif