diff options
| -rw-r--r-- | common.mk | 2 | ||||
| -rw-r--r-- | common/sleep_led.h | 13 | ||||
| -rw-r--r-- | common/suspend.c | 51 | ||||
| -rw-r--r-- | common/suspend.h | 32 |
4 files changed, 97 insertions, 1 deletions
@@ -10,6 +10,7 @@ SRC += $(COMMON_DIR)/host.c \ $(COMMON_DIR)/print.c \ $(COMMON_DIR)/debug.c \ $(COMMON_DIR)/bootloader.c \ + $(COMMON_DIR)/suspend.c \ $(COMMON_DIR)/util.c @@ -58,6 +59,7 @@ endif ifdef SLEEP_LED_ENABLE SRC += $(COMMON_DIR)/sleep_led.c OPT_DEFS += -DSLEEP_LED_ENABLE + OPT_DEFS += -DNO_SUSPEND_POWER_DOWN endif diff --git a/common/sleep_led.h b/common/sleep_led.h index aebdbeaa5a..6bdcf558a4 100644 --- a/common/sleep_led.h +++ b/common/sleep_led.h @@ -1,10 +1,21 @@ #ifndef SLEEP_LED_H #define SLEEP_LED_H -#define NO_SUSPEND_POWER_DOWN + +#ifdef SLEEP_LED_ENABLE void sleep_led_init(void); void sleep_led_enable(void); void sleep_led_disable(void); +void sleep_led_toggle(void); + +#else + +#define sleep_led_init() +#define sleep_led_enable() +#define sleep_led_disable() +#define sleep_led_toggle() + +#endif #endif diff --git a/common/suspend.c b/common/suspend.c new file mode 100644 index 0000000000..397e0729a6 --- /dev/null +++ b/common/suspend.c @@ -0,0 +1,51 @@ +#include "suspend.h" +#include "matrix.h" +#include "action.h" + + +void suspend_power_down(void) +{ +#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; +} + +void suspend_wakeup_init(void) +{ + matrix_init(); + clear_keyboard(); +} diff --git a/common/suspend.h b/common/suspend.h new file mode 100644 index 0000000000..1c1e41ac3e --- /dev/null +++ b/common/suspend.h @@ -0,0 +1,32 @@ +#ifndef SUSPEND_H +#define SUSPEND_H + +#include <stdint.h> +#include <stdbool.h> +#include <avr/sleep.h> +#include <avr/wdt.h> +#include <avr/interrupt.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" \ +) + + +void suspend_power_down(void); +bool suspend_wakeup_condition(void); +void suspend_wakeup_init(void); + +#endif |