diff options
Diffstat (limited to 'protocol/lufa/lufa.c')
| -rw-r--r-- | protocol/lufa/lufa.c | 128 |
1 files changed, 124 insertions, 4 deletions
diff --git a/protocol/lufa/lufa.c b/protocol/lufa/lufa.c index 98c3a68ffb..127dece547 100644 --- a/protocol/lufa/lufa.c +++ b/protocol/lufa/lufa.c @@ -36,12 +36,20 @@ this software. */ +#include <avr/sleep.h> +#include <avr/wdt.h> #include "report.h" #include "host.h" #include "host_driver.h" #include "keyboard.h" +#include "action.h" +#include "matrix.h" +#include "led.h" #include "sendchar.h" #include "debug.h" +#ifdef SLEEP_LED_ENABLE +#include "sleep_led.h" +#endif #include "descriptor.h" #include "lufa.h" @@ -133,16 +141,45 @@ static void Console_Task(void) /******************************************************************************* * USB Events ******************************************************************************/ -/** Event handler for the USB_Connect event. */ +/* + * 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 +*/ void EVENT_USB_Device_Connect(void) { + led_set(0x1f); // all on } -/** Event handler for the USB_Disconnect event. */ void EVENT_USB_Device_Disconnect(void) { } +void EVENT_USB_Device_Reset(void) +{ +} + +void EVENT_USB_Device_Suspend() +{ +#ifdef SLEEP_LED_ENABLE + sleep_led_enable(); +#endif +} + +void EVENT_USB_Device_WakeUp() +{ + // initialize + matrix_init(); + clear_keyboard(); + +#ifdef SLEEP_LED_ENABLE + sleep_led_disable(); +#endif + led_set(host_keyboard_leds()); +} + void EVENT_USB_Device_StartOfFrame(void) { Console_Task(); @@ -466,17 +503,83 @@ static void SetupHardware(void) USB_Device_EnableSOFEvents(); } + +static bool wakeup_condition(void) +{ + matrix_scan(); + for (uint8_t r = 0; r < MATRIX_ROWS; r++) { + if (matrix_get_row(r)) return true; + } + return false; +} + +#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) { SetupHardware(); keyboard_init(); host_set_driver(&lufa_driver); +#ifdef SLEEP_LED_ENABLE + sleep_led_init(); +#endif sei(); - // TODO: can't print here - debug("LUFA init\n"); while (1) { + // while suspend + while (USB_DeviceState == DEVICE_STATE_Suspended) { +#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 + + // Send request of USB Wakeup from Suspend to host + if (USB_Device_RemoteWakeupEnabled) { + if (wakeup_condition()) { + USB_Device_SendRemoteWakeup(); + } + } + } + keyboard_task(); #if !defined(INTERRUPT_CONTROL_ENDPOINT) @@ -484,3 +587,20 @@ int main(void) #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 |