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Add breathing sleep LED during USB suspend

This commit is contained in:
tmk 2013-03-15 22:22:57 +09:00
parent 6ab85d1121
commit 5bd0a8e724
4 changed files with 127 additions and 9 deletions

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@ -47,5 +47,11 @@ ifdef $(or MOUSEKEY_ENABLE, PS2_MOUSE_ENABLE)
OPT_DEFS += -DMOUSE_ENABLE
endif
ifdef SLEEP_LED_ENABLE
SRC += $(COMMON_DIR)/sleep_led.c
OPT_DEFS += -DSLEEP_LED_ENABLE
endif
# Search Path
VPATH += $(TOP_DIR)/common

84
common/sleep_led.c Normal file
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@ -0,0 +1,84 @@
#include <stdint.h>
#include <avr/io.h>
#include <avr/interrupt.h>
#include <avr/pgmspace.h>
#include "led.h"
#include "sleep_led.h"
/* Software PWM
* ______ ______ __
* | ON |___OFF___| ON |___OFF___| ....
* |<-------------->|<-------------->|<- ....
* PWM period PWM period
*
* 256 interrupts/period[resolution]
* 64 periods/second[frequency]
* 256*64 interrupts/second
* F_CPU/(256*64) clocks/interrupt
*/
#define SLEEP_LED_TIMER_TOP F_CPU/(256*64)
void sleep_led_init(void)
{
/* Timer1 setup */
/* CTC mode */
TCCR1B |= _BV(WGM12);
/* Clock selelct: clk/1 */
TCCR1B |= _BV(CS10);
/* Set TOP value */
uint8_t sreg = SREG;
cli();
OCR1AH = (SLEEP_LED_TIMER_TOP>>8)&0xff;
OCR1AL = SLEEP_LED_TIMER_TOP&0xff;
SREG = sreg;
}
void sleep_led_enable(void)
{
/* Enable Compare Match Interrupt */
TIMSK1 |= _BV(OCIE1A);
}
void sleep_led_disable(void)
{
/* Disable Compare Match Interrupt */
TIMSK1 &= ~_BV(OCIE1A);
}
/* Breathing Sleep LED brighness(PWM On period) table
* (32[steps] * 8[duration]) / 64[PWM periods/s] = 4 second breath cycle
*/
static const uint8_t breathing_table[32] PROGMEM = {
0, 0, 0, 2, 9, 21, 37, 56, 78, 127, 151, 175, 197, 216, 232, 244,
254, 244, 216, 197, 175, 151, 127, 78, 56, 37, 21, 9, 2, 0, 0, 0
};
ISR(TIMER1_COMPA_vect)
{
/* Software PWM
* timer:1111 1111 1111 1111
* \----/\-/ \-------/+--- count(0-255)
* | +--------------- duration of step(8)
* +-------------------- index of step table(0-31)
*/
static union {
uint16_t row;
struct {
uint8_t count:8;
uint8_t duration:3;
uint8_t index:5;
} pwm;
} timer = { .row = 0 };
timer.row++;
// LED on
if (timer.pwm.count == 0) {
led_set(1<<USB_LED_CAPS_LOCK);
}
// LED off
if (timer.pwm.count == pgm_read_byte(&breathing_table[timer.pwm.index])) {
led_set(0);
}
}

10
common/sleep_led.h Normal file
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@ -0,0 +1,10 @@
#ifndef SLEEP_LED_H
#define SLEEP_LED_H
#define NO_SUSPEND_POWER_DOWN
void sleep_led_init(void);
void sleep_led_enable(void);
void sleep_led_disable(void);
#endif

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@ -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"
@ -140,10 +148,9 @@ static void Console_Task(void)
* 2) EVENT_USB_Device_Reset
* 3) EVENT_USB_Device_Wake
*/
#include "led.h"
#include "matrix.h"
void EVENT_USB_Device_Connect(void)
{
led_set(0x1f); // all on
}
void EVENT_USB_Device_Disconnect(void)
@ -156,17 +163,21 @@ void EVENT_USB_Device_Reset(void)
void EVENT_USB_Device_Suspend()
{
#ifdef SLEEP_LED_ENABLE
sleep_led_enable();
#endif
}
#include "action.h"
void EVENT_USB_Device_WakeUp()
{
// initialize
matrix_init();
clear_keyboard();
// turn off LED
led_set(0);
#ifdef SLEEP_LED_ENABLE
sleep_led_disable();
#endif
led_set(host_keyboard_leds());
}
void EVENT_USB_Device_StartOfFrame(void)
@ -493,7 +504,6 @@ static void SetupHardware(void)
}
#include "matrix.h"
static bool wakeup_condition(void)
{
matrix_scan();
@ -503,8 +513,6 @@ static bool wakeup_condition(void)
return false;
}
#include <avr/sleep.h>
#include <avr/wdt.h>
#define wdt_intr_enable(value) \
__asm__ __volatile__ ( \
"in __tmp_reg__,__SREG__" "\n\t" \
@ -527,11 +535,15 @@ int main(void)
SetupHardware();
keyboard_init();
host_set_driver(&lufa_driver);
#ifdef SLEEP_LED_ENABLE
sleep_led_init();
#endif
sei();
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();
@ -558,6 +570,7 @@ int main(void)
// Disable watchdog after sleep
wdt_disable();
#endif
// Send request of USB Wakeup from Suspend to host
if (USB_Device_RemoteWakeupEnabled) {
@ -575,9 +588,12 @@ int main(void)
}
}
/* watchdog timeout during sleep */
#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;
@ -585,4 +601,6 @@ ISR(WDT_vect)
if ((led_count & 0x07) == 0) {
led_set((led_state ^= (1<<USB_LED_CAPS_LOCK)));
}
*/
}
#endif