diff options
Diffstat (limited to 'watch-library/watch/watch_deepsleep.c')
-rw-r--r-- | watch-library/watch/watch_deepsleep.c | 85 |
1 files changed, 85 insertions, 0 deletions
diff --git a/watch-library/watch/watch_deepsleep.c b/watch-library/watch/watch_deepsleep.c new file mode 100644 index 00000000..53a41b5c --- /dev/null +++ b/watch-library/watch/watch_deepsleep.c @@ -0,0 +1,85 @@ +/* + * MIT License + * + * Copyright (c) 2020 Joey Castillo + * + * Permission is hereby granted, free of charge, to any person obtaining a copy + * of this software and associated documentation files (the "Software"), to deal + * in the Software without restriction, including without limitation the rights + * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell + * copies of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in all + * copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE + * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE + * SOFTWARE. + */ + +ext_irq_cb_t a2_callback; +ext_irq_cb_t d1_callback; + + static void extwake_callback(uint8_t reason) { + if (reason & RTC_TAMPID_TAMPID2) { + if (btn_alarm_callback != NULL) btn_alarm_callback(); + } else if (reason & RTC_TAMPID_TAMPID1) { + if (a2_callback != NULL) a2_callback(); + } else if (reason & RTC_TAMPID_TAMPID0) { + if (d1_callback != NULL) d1_callback(); + } +} + +void watch_register_extwake_callback(uint8_t pin, ext_irq_cb_t callback) { + uint32_t pinmux; + if (pin == D1) { + d1_callback = callback; + pinmux = PINMUX_PB00G_RTC_IN0; + } else if (pin == A2) { + a2_callback = callback; + pinmux = PINMUX_PB02G_RTC_IN1; + } else { + return; + } + gpio_set_pin_direction(pin, GPIO_DIRECTION_IN); + gpio_set_pin_function(pin, pinmux); + _extwake_register_callback(&CALENDAR_0.device, extwake_callback); +} + +void watch_store_backup_data(uint32_t data, uint8_t reg) { + if (reg < 8) { + RTC->MODE0.BKUP[reg].reg = data; + } +} + +uint32_t watch_get_backup_data(uint8_t reg) { + if (reg < 8) { + return RTC->MODE0.BKUP[reg].reg; + } + + return 0; +} + +void watch_enter_deep_sleep() { + // enable and configure the external wake interrupt, if not already set up. + if (btn_alarm_callback == NULL && a2_callback == NULL && d1_callback == NULL) { + gpio_set_pin_direction(BTN_ALARM, GPIO_DIRECTION_IN); + gpio_set_pin_pull_mode(BTN_ALARM, GPIO_PULL_DOWN); + gpio_set_pin_function(BTN_ALARM, PINMUX_PA02G_RTC_IN2); + _extwake_register_callback(&CALENDAR_0.device, extwake_callback); + } + + // disable SLCD + slcd_sync_deinit(&SEGMENT_LCD_0); + hri_mclk_clear_APBCMASK_SLCD_bit(SLCD); + + // TODO: disable other peripherals + + // go into backup sleep mode + sleep(5); +} |