tmk
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protocol/lufa/lufa.c
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| /******************************************************************************* | /******************************************************************************* | ||||
| * USB Events | * USB Events | ||||
| ******************************************************************************/ | ******************************************************************************/ | ||||
| /* | |||||
| * Event Order of Plug in: | |||||
| * 0) EVENT_USB_Device_Connect | |||||
| * 1) EVENT_USB_Device_Suspend | |||||
| * 2) EVENT_USB_Device_Reset | |||||
| * 3) EVENT_USB_Device_Wake | |||||
| */ | |||||
| #include "led.h" | #include "led.h" | ||||
| #include "matrix.h" | |||||
| void EVENT_USB_Device_Connect(void) | void EVENT_USB_Device_Connect(void) | ||||
| { | { | ||||
| } | } | ||||
| void EVENT_USB_Device_Suspend() | void EVENT_USB_Device_Suspend() | ||||
| { | { | ||||
| led_set(1<<USB_LED_CAPS_LOCK); | |||||
| } | } | ||||
| #include "action.h" | |||||
| void EVENT_USB_Device_WakeUp() | void EVENT_USB_Device_WakeUp() | ||||
| { | { | ||||
| // initialize | |||||
| matrix_init(); | |||||
| clear_keyboard(); | |||||
| // turn off LED | |||||
| led_set(0); | led_set(0); | ||||
| } | } | ||||
| return false; | return false; | ||||
| } | } | ||||
| #include <avr/sleep.h> | |||||
| #include <avr/wdt.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" \ | |||||
| ) | |||||
| int main(void) __attribute__ ((weak)); | int main(void) __attribute__ ((weak)); | ||||
| int main(void) | int main(void) | ||||
| { | { | ||||
| sei(); | sei(); | ||||
| while (1) { | while (1) { | ||||
| // while suspend | |||||
| while (USB_DeviceState == DEVICE_STATE_Suspended) { | while (USB_DeviceState == DEVICE_STATE_Suspended) { | ||||
| // TODO: power saving | |||||
| // 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(); | |||||
| // Send request of USB Wakeup from Suspend to host | |||||
| if (USB_Device_RemoteWakeupEnabled) { | if (USB_Device_RemoteWakeupEnabled) { | ||||
| if (wakeup_condition()) { | if (wakeup_condition()) { | ||||
| USB_Device_SendRemoteWakeup(); | USB_Device_SendRemoteWakeup(); | ||||
| #endif | #endif | ||||
| } | } | ||||
| } | } | ||||
| /* watchdog timeout during sleep */ | |||||
| ISR(WDT_vect) | |||||
| { | |||||
| // 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))); | |||||
| } | |||||
| } |
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