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/*
* 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);
}
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