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- #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);
- }
-
- 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
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