Compensate timer during prower down

This commit is contained in:
tmk 2014-11-26 11:25:45 +09:00
parent 10a6b2c7d8
commit 05795cb003
6 changed files with 27 additions and 15 deletions

View file

@ -7,6 +7,7 @@
#include "backlight.h"
#include "suspend_avr.h"
#include "suspend.h"
#include "timer.h"
#ifdef PROTOCOL_LUFA
#include "lufa.h"
#endif
@ -52,11 +53,13 @@ void suspend_idle(uint8_t time)
* WDTO_4S
* WDTO_8S
*/
void suspend_power_down(uint8_t wdto)
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);
@ -67,7 +70,6 @@ void suspend_power_down(uint8_t wdto)
// - prescale clock
// - BOD disable
// - Power Reduction Register PRR
set_sleep_mode(SLEEP_MODE_PWR_DOWN);
sleep_enable();
sei();
@ -78,6 +80,11 @@ void suspend_power_down(uint8_t wdto)
wdt_disable();
}
void suspend_power_down(void)
{
power_down(WDTO_15MS);
}
bool suspend_wakeup_condition(void)
{
matrix_power_up();
@ -103,15 +110,13 @@ void suspend_wakeup_init(void)
/* 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)));
// compensate timer for sleep
switch (wdt_timeout) {
case WDTO_15MS:
timer_count += 15 + 2; // WDTO_15MS + 2(from observation)
break;
default:
;
}
*/
}
#endif

View file

@ -6,7 +6,7 @@
void suspend_idle(uint8_t timeout);
void suspend_power_down(uint8_t timeout);
void suspend_power_down(void);
bool suspend_wakeup_condition(void);
void suspend_wakeup_init(void);

View file

@ -9,10 +9,15 @@ Bug:
- Do not power-down during USB connection is active - DONE 11/11
(USB_DeviceState == USB_DEVICE_Configured) is used to check USB connection
matrix_power_down() matrix.c - 11/23
- timer is slow while power down - DONE 11/26
- time out interrupt is lost while power down?
- interrupt of watchdog timer compensates timer counter(avr/suspend.c)
Todo:
Design:
- suspend.h - DONE 11/26
- remove argument from suspend_power_down() for backward compatitibility
- remove MCU dependent power saving code from core/keyboard
- it should be located in project matrix.c - DONE 11/23
- HHKB matrix.c needs matrix_prev?
@ -47,6 +52,8 @@ Power saving:
- During USB suspend change clock source to internal RC from external Xtal(6.8)
- FRZCLK: you can freeze clock for power saving. still WAKEUPI and VBUSTI interrupts are available while freezing.(21.7.3)
- Suspend: Clear Suspend Bit, Freeze clock, disable PLL, MCU sleep(21.13)
- Voltage reference(8.1.1)
- to reduce power consumption while power down mode
Improving:
- BT LED; connecting, linked, sleeping, deep sleeping

View file

@ -186,6 +186,6 @@ void matrix_power_down(void) {
if (USB_DeviceState == DEVICE_STATE_Configured) return;
if (timer_elapsed32(matrix_last_modified) <= MATRIX_POWER_SAVE) return;
KEY_POWER_OFF();
suspend_power_down(WDTO_15MS);
suspend_power_down();
matrix_power = false;
}

View file

@ -85,7 +85,7 @@ int main(void)
print("Keyboard start.\n");
while (1) {
while (USB_DeviceState == DEVICE_STATE_Suspended) {
suspend_power_down(WDTO_120MS);
suspend_power_down();
if (USB_Device_RemoteWakeupEnabled && suspend_wakeup_condition()) {
USB_Device_SendRemoteWakeup();
}

View file

@ -587,7 +587,7 @@ int main(void)
print("Keyboard start.\n");
while (1) {
while (USB_DeviceState == DEVICE_STATE_Suspended) {
suspend_power_down(WDTO_120MS);
suspend_power_down();
if (USB_Device_RemoteWakeupEnabled && suspend_wakeup_condition()) {
USB_Device_SendRemoteWakeup();
}