forked from forks/qmk_firmware
99 lines
2.1 KiB
C
99 lines
2.1 KiB
C
#include <stdbool.h>
|
|
#include <avr/sleep.h>
|
|
#include <avr/wdt.h>
|
|
#include <avr/interrupt.h>
|
|
#include "matrix.h"
|
|
#include "action.h"
|
|
#include "backlight.h"
|
|
#include "suspend_avr.h"
|
|
#include "suspend.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)
|
|
{
|
|
#ifdef BACKLIGHT_ENABLE
|
|
backlight_set(0);
|
|
#endif
|
|
#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;
|
|
}
|
|
|
|
// run immediately after wakeup
|
|
void suspend_wakeup_init(void)
|
|
{
|
|
// clear keyboard state
|
|
clear_keyboard();
|
|
#ifdef BACKLIGHT_ENABLE
|
|
backlight_init();
|
|
#endif
|
|
}
|
|
|
|
#ifndef NO_SUSPEND_POWER_DOWN
|
|
/* watchdog timeout */
|
|
ISR(WDT_vect)
|
|
{
|
|
/* wakeup from MCU sleep mode */
|
|
/*
|
|
// blink LED
|
|
static uint8_t led_state = 0;
|
|
static uint8_t led_count = 0;
|
|
led_count++;
|
|
if ((led_count & 0x07) == 0) {
|
|
led_set((led_state ^= (1<<USB_LED_CAPS_LOCK)));
|
|
}
|
|
*/
|
|
}
|
|
#endif
|