#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