219 lines
6.5 KiB
C
219 lines
6.5 KiB
C
/*!
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\file main.c
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\brief deepsleep wakeup through RTC alarm interrupt
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\version 2021-10-30, V1.0.0, firmware for GD32W51x
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*/
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/*
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Copyright (c) 2021, GigaDevice Semiconductor Inc.
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Redistribution and use in source and binary forms, with or without modification,
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are permitted provided that the following conditions are met:
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1. Redistributions of source code must retain the above copyright notice, this
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list of conditions and the following disclaimer.
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2. Redistributions in binary form must reproduce the above copyright notice,
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this list of conditions and the following disclaimer in the documentation
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and/or other materials provided with the distribution.
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3. Neither the name of the copyright holder nor the names of its contributors
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may be used to endorse or promote products derived from this software without
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specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
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INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
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OF SUCH DAMAGE.
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*/
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#include "gd32w51x.h"
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#include "gd32w515p_eval.h"
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#include "systick.h"
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#include "main.h"
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void led_config(void);
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void nvic_configuration(void);
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void rtc_configuration(void);
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void fwdgt_configuration(void);
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void rtc_alarm_time_configuration(void);
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/*!
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\brief main function
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\param[in] none
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\param[out] none
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\retval none
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*/
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int main(void)
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{
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/* nvic configure */
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nvic_configuration();
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/* led configure */
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led_config();
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/* systick configure */
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systick_config();
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gd_eval_led_on(LED2);
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delay_1ms(2000U);
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gd_eval_led_off(LED2);
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/* RTC configure */
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rtc_configuration();
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/* FWDGT configure */
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fwdgt_configuration();
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while(1){
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delay_1ms(50U);
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/* PMU enters deepsleep mode */
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pmu_to_deepsleepmode(PMU_LDO_LOWPOWER ,PMU_LOWDRIVER_ENABLE, WFI_CMD);
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gd_eval_led_toggle(LED1);
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}
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}
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/*!
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\brief led configure
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\param[in] none
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\param[out] none
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\retval none
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*/
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void led_config(void)
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{
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gd_eval_led_init(LED1);
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gd_eval_led_init(LED2);
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}
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/*!
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\brief configure the nested vectored interrupt controller
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\param[in] none
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\param[out] none
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\retval none
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*/
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void nvic_configuration(void)
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{
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nvic_priority_group_set(NVIC_PRIGROUP_PRE2_SUB2);
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nvic_irq_enable(RTC_Alarm_IRQn, 2U, 1U);
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}
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/*!
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\brief configure RTC alarm time
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\param[in] none
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\param[out] none
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\retval none
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*/
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void rtc_alarm_time_configuration(void)
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{
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rtc_alarm_struct rtc_alarm;
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rtc_parameter_struct rtc_initpara;
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/* current time configure */
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rtc_initpara.factor_asyn = 0x63;
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rtc_initpara.factor_syn = 0x13F;
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rtc_initpara.year = 0x16;
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rtc_initpara.day_of_week = RTC_SATURDAY;
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rtc_initpara.month = RTC_APR;
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rtc_initpara.date = 0x30;
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rtc_initpara.display_format = RTC_24HOUR;
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rtc_initpara.am_pm = RTC_AM;
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rtc_initpara.hour = 0x00;
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rtc_initpara.minute = 0x00;
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rtc_initpara.second = 0x00;
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rtc_init(&rtc_initpara);
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rtc_alarm_disable(RTC_ALARM0);
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rtc_alarm.alarm_mask = RTC_ALARM_DATE_MASK|RTC_ALARM_HOUR_MASK|RTC_ALARM_MINUTE_MASK;
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rtc_alarm.weekday_or_date = RTC_ALARM_DATE_SELECTED;
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rtc_alarm.alarm_day = 0x31;
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rtc_alarm.am_pm = RTC_AM;
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/* RTC alarm value */
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rtc_alarm.alarm_hour = 0x00;
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rtc_alarm.alarm_minute = 0x00;
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rtc_alarm.alarm_second = ALARM_TIME_INTERVAL;
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/* RTC alarm configuration */
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rtc_alarm_config(RTC_ALARM0, &rtc_alarm);
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rtc_interrupt_enable(RTC_INT_ALARM0);
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rtc_alarm_enable(RTC_ALARM0);
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}
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/*!
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\brief configure the RTC
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\param[in] none
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\param[out] none
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\retval none
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*/
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void rtc_configuration(void)
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{
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rtc_parameter_struct rtc_initpara;
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rtc_alarm_struct rtc_alarm;
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/* enable PMU and BKPI clocks */
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rcu_periph_clock_enable(RCU_PMU);
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/* allow access to BKP domain */
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pmu_backup_write_enable();
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/* enable IRC32K */
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rcu_osci_on(RCU_IRC32K);
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/* wait till IRC32K is ready */
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rcu_osci_stab_wait(RCU_IRC32K);
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/* select RCU_IRC32K as RTC clock source */
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rcu_rtc_clock_config(RCU_RTCSRC_IRC32K);
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/* enable RTC Clock */
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rcu_periph_clock_enable(RCU_RTC);
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rtc_initpara.factor_asyn = 0x63;
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rtc_initpara.factor_syn = 0x13F;
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rtc_initpara.year = 0x16;
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rtc_initpara.day_of_week = RTC_SATURDAY;
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rtc_initpara.month = RTC_APR;
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rtc_initpara.date = 0x30;
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rtc_initpara.display_format = RTC_24HOUR;
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rtc_initpara.am_pm = RTC_AM;
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/* current time configure */
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rtc_initpara.hour = 0x00;
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rtc_initpara.minute = 0x00;
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rtc_initpara.second = 0x00;
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rtc_init(&rtc_initpara);
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rtc_alarm_disable(RTC_ALARM0);
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rtc_alarm.alarm_mask = RTC_ALARM_DATE_MASK|RTC_ALARM_HOUR_MASK|RTC_ALARM_MINUTE_MASK;
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rtc_alarm.weekday_or_date = RTC_ALARM_DATE_SELECTED;
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rtc_alarm.alarm_day = 0x31;
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rtc_alarm.am_pm = RTC_AM;
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/* RTC alarm value */
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rtc_alarm.alarm_hour = 0x00;
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rtc_alarm.alarm_minute = 0x00;
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rtc_alarm.alarm_second = ALARM_TIME_INTERVAL;
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/* RTC alarm configuration */
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rtc_alarm_config(RTC_ALARM0, &rtc_alarm);
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rtc_interrupt_enable(RTC_INT_ALARM0);
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rtc_alarm_enable(RTC_ALARM0);
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/* EXTI config */
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exti_deinit();
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exti_init(EXTI_17,EXTI_INTERRUPT,EXTI_TRIG_RISING);
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rtc_flag_clear(RTC_FLAG_ALARM0);
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exti_interrupt_flag_clear(EXTI_17);
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exti_interrupt_enable(EXTI_17);
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}
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/*!
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\brief configure the FWDGT
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\param[in] none
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\param[out] none
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\retval none
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*/
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void fwdgt_configuration(void)
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{
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/* confiure FWDGT counter clock: 32KHz(IRC32K) / 256 = 125Hz */
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fwdgt_config(1250, FWDGT_PSC_DIV256);
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while(FWDGT_STAT);
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/* after 10 seconds to generate a reset */
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fwdgt_enable();
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}
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