77 lines
1.5 KiB
C
77 lines
1.5 KiB
C
#include "suspend.h"
|
|
#include "matrix.h"
|
|
#include "action.h"
|
|
#include "backlight.h"
|
|
|
|
|
|
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
|