125 lines
2.6 KiB
C
125 lines
2.6 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"
|
|
#include "timer.h"
|
|
#ifdef PROTOCOL_LUFA
|
|
#include "lufa.h"
|
|
#endif
|
|
|
|
|
|
#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_idle(uint8_t time)
|
|
{
|
|
cli();
|
|
set_sleep_mode(SLEEP_MODE_IDLE);
|
|
sleep_enable();
|
|
sei();
|
|
sleep_cpu();
|
|
sleep_disable();
|
|
}
|
|
|
|
/* Power down MCU with watchdog timer
|
|
* wdto: watchdog timer timeout defined in <avr/wdt.h>
|
|
* WDTO_15MS
|
|
* WDTO_30MS
|
|
* WDTO_60MS
|
|
* WDTO_120MS
|
|
* WDTO_250MS
|
|
* WDTO_500MS
|
|
* WDTO_1S
|
|
* WDTO_2S
|
|
* WDTO_4S
|
|
* WDTO_8S
|
|
*/
|
|
static uint8_t wdt_timeout = 0;
|
|
static void power_down(uint8_t wdto)
|
|
{
|
|
#ifdef PROTOCOL_LUFA
|
|
if (USB_DeviceState == DEVICE_STATE_Configured) return;
|
|
#endif
|
|
wdt_timeout = wdto;
|
|
|
|
// Watchdog Interrupt Mode
|
|
wdt_intr_enable(wdto);
|
|
|
|
// TODO: more power saving
|
|
// See PicoPower application note
|
|
// - I/O port input with pullup
|
|
// - prescale clock
|
|
// - BOD disable
|
|
// - Power Reduction Register PRR
|
|
set_sleep_mode(SLEEP_MODE_PWR_DOWN);
|
|
sleep_enable();
|
|
sei();
|
|
sleep_cpu();
|
|
sleep_disable();
|
|
|
|
// Disable watchdog after sleep
|
|
wdt_disable();
|
|
}
|
|
|
|
void suspend_power_down(void)
|
|
{
|
|
power_down(WDTO_15MS);
|
|
}
|
|
|
|
__attribute__ ((weak)) void matrix_power_up(void) {}
|
|
__attribute__ ((weak)) void matrix_power_down(void) {}
|
|
bool suspend_wakeup_condition(void)
|
|
{
|
|
matrix_power_up();
|
|
matrix_scan();
|
|
matrix_power_down();
|
|
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)
|
|
{
|
|
// compensate timer for sleep
|
|
switch (wdt_timeout) {
|
|
case WDTO_15MS:
|
|
timer_count += 15 + 2; // WDTO_15MS + 2(from observation)
|
|
break;
|
|
default:
|
|
;
|
|
}
|
|
}
|
|
#endif
|