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Add common/suspend.c

This commit is contained in:
tmk 2013-03-25 01:46:32 +09:00
parent 1f19176867
commit 2c0bb5e7e6
4 changed files with 97 additions and 1 deletions

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@ -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

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@ -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

51
common/suspend.c Normal file
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@ -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();
}

32
common/suspend.h Normal file
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@ -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