303 lines
9.3 KiB
C
303 lines
9.3 KiB
C
/*!
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\file main.c
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\brief RTC calendar alarm demo
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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 <stdio.h>
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#define RTC_CLOCK_SOURCE_LXTAL
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#define BKP_VALUE 0x32F0
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rtc_parameter_struct rtc_initpara;
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rtc_alarm_struct rtc_alarm;
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__IO uint32_t prescaler_a = 0, prescaler_s = 0;
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uint32_t alarm_status = 0x0;
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void rtc_setup(void);
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void rtc_show_time(void);
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void rtc_show_alarm(void);
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uint8_t usart_input_threshold(uint32_t value);
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void rtc_pre_config(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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gd_eval_com_init(EVAL_COM0);
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printf("\n\r ****************** RTC calendar alarm demo ******************\n\r");
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/* enable PMU clock */
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rcu_periph_clock_enable(RCU_PMU);
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/* enable the access of the RTC registers */
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pmu_backup_write_enable();
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rtc_pre_config();
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/* check if RTC has aready been configured */
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if (BKP_VALUE != RTC_BKP0){
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rtc_setup();
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}else{
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/* detect the reset source */
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if (RESET != rcu_flag_get(RCU_FLAG_PORRST)){
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printf("power on reset occurred....\n\r");
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}else if (RESET != rcu_flag_get(RCU_FLAG_EPRST)){
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printf("external reset occurred....\n\r");
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}
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printf("no need to configure RTC....\n\r");
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rtc_flag_clear(RTC_STAT_ALRM0F);
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exti_flag_clear(EXTI_17);
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rtc_show_time();
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rtc_show_alarm();
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}
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rcu_all_reset_flag_clear();
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/* configure the leds */
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gd_eval_led_init(LED1);
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gd_eval_led_on(LED1);
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gd_eval_led_init(LED2);
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gd_eval_led_on(LED2);
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rtc_flag_clear(RTC_FLAG_ALARM0);
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exti_flag_clear(EXTI_17);
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/* RTC alarm interrupt configuration */
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exti_init(EXTI_17, EXTI_INTERRUPT, EXTI_TRIG_RISING);
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nvic_irq_enable(RTC_Alarm_IRQn, 0U, 0U);
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while (1);
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}
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/*!
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\brief RTC configuration 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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void rtc_pre_config(void)
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{
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#if defined (RTC_CLOCK_SOURCE_IRC32K)
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rcu_osci_on(RCU_IRC32K);
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rcu_osci_stab_wait(RCU_IRC32K);
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rcu_rtc_clock_config(RCU_RTCSRC_IRC32K);
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prescaler_s = 0x13F;
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prescaler_a = 0x63;
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#elif defined (RTC_CLOCK_SOURCE_LXTAL)
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rcu_osci_on(RCU_LXTAL);
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rcu_osci_stab_wait(RCU_LXTAL);
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rcu_rtc_clock_config(RCU_RTCSRC_LXTAL);
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prescaler_s = 0xFF;
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prescaler_a = 0x7F;
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#else
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#error RTC clock source should be defined.
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#endif /* RTC_CLOCK_SOURCE_IRC40K */
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rcu_periph_clock_enable(RCU_RTC);
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rtc_register_sync_wait();
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}
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/*!
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\brief setup RTC time and alarm
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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_setup(void)
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{
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/* setup RTC time value */
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uint32_t tmp_hh = 0xFF, tmp_mm = 0xFF, tmp_ss = 0xFF;
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/* setup RTC time value */
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rtc_initpara.factor_asyn = prescaler_a;
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rtc_initpara.factor_syn = prescaler_s;
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rtc_initpara.year = 0x20;
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rtc_initpara.day_of_week = RTC_SATURDAY;
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rtc_initpara.month = RTC_JUN;
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rtc_initpara.date = 0x27;
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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 = 0x10;
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rtc_initpara.minute = 0x42;
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rtc_initpara.second = 0x50;
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/* RTC current time configuration */
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printf("=======Configure RTC Time========\n\r");
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printf(" please input hour:\n\r");
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while (0xFF == tmp_hh){
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tmp_hh = usart_input_threshold(23);
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rtc_initpara.hour = tmp_hh;
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}
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printf(" %0.2x\n\r", tmp_hh);
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printf(" please input minute:\n\r");
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while (0xFF == tmp_mm){
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tmp_mm = usart_input_threshold(59);
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rtc_initpara.minute = tmp_mm;
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}
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printf(" %0.2x\n\r", tmp_mm);
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printf(" please input second:\n\r");
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while (0xFF == tmp_ss){
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tmp_ss = usart_input_threshold(59);
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rtc_initpara.second = tmp_ss;
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}
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printf(" %0.2x\n\r", tmp_ss);
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if(ERROR == rtc_init(&rtc_initpara)){
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while(1){
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}
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}else{
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rtc_show_time();
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RTC_BKP0 = BKP_VALUE;
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}
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/* setup RTC alarm */
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tmp_hh = 0xFF;
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tmp_mm = 0xFF;
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tmp_ss = 0xFF;
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rtc_alarm_disable(RTC_ALARM0);
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printf("=======Input Alarm Value=======\n\r");
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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 input */
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printf(" please input Alarm Hour:\n\r");
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while (0xFF == tmp_hh){
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tmp_hh = usart_input_threshold(23);
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rtc_alarm.alarm_hour = tmp_hh;
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}
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printf(" %0.2x\n\r", tmp_hh);
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printf(" Please Input Alarm Minute:\n\r");
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while (0xFF == tmp_mm){
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tmp_mm = usart_input_threshold(59);
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rtc_alarm.alarm_minute = tmp_mm;
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}
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printf(" %0.2x\n\r", tmp_mm);
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printf(" Please Input Alarm Second:\n\r");
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while (0xFF == tmp_ss){
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tmp_ss = usart_input_threshold(59);
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rtc_alarm.alarm_second = tmp_ss;
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}
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printf(" %0.2x", tmp_ss);
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/* RTC alarm configuration */
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rtc_alarm_config(RTC_ALARM0,&rtc_alarm);
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printf("\n\r** RTC Set Alarm Success! **\n\r");
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rtc_show_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 display the current 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_show_time(void)
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{
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uint32_t time_subsecond = 0;
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uint8_t subsecond_ss = 0,subsecond_ts = 0,subsecond_hs = 0;
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rtc_current_time_get(&rtc_initpara);
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/* get the subsecond value of current time, and convert it into fractional format */
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time_subsecond = rtc_subsecond_get();
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subsecond_ss=(1000-(time_subsecond*1000+1000)/400)/100;
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subsecond_ts=(1000-(time_subsecond*1000+1000)/400)%100/10;
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subsecond_hs=(1000-(time_subsecond*1000+1000)/400)%10;
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printf("Current time: %0.2x:%0.2x:%0.2x .%d%d%d \n\r", \
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rtc_initpara.hour, rtc_initpara.minute, rtc_initpara.second,\
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subsecond_ss, subsecond_ts, subsecond_hs);
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}
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/*!
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\brief display the alram value
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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_show_alarm(void)
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{
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rtc_alarm_get(RTC_ALARM0,&rtc_alarm);
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printf("The alarm: %0.2x:%0.2x:%0.2x \n\r", rtc_alarm.alarm_hour, rtc_alarm.alarm_minute,\
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rtc_alarm.alarm_second);
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}
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/*!
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\brief get the input character string and check if it is valid
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\param[in] none
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\param[out] none
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\retval input value in BCD mode
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*/
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uint8_t usart_input_threshold(uint32_t value)
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{
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uint32_t index = 0;
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uint32_t tmp[2] = {0, 0};
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while (index < 2){
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while (RESET == usart_flag_get(EVAL_COM0, USART_FLAG_RBNE));
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tmp[index++] = usart_data_receive(EVAL_COM0);
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if ((tmp[index - 1] < 0x30) || (tmp[index - 1] > 0x39)){
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printf("\n\r please input a valid number between 0 and 9 \n\r");
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index--;
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}
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}
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index = (tmp[1] - 0x30) + ((tmp[0] - 0x30) * 10);
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if (index > value){
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printf("\n\r please input a valid number between 0 and %d \n\r", value);
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return 0xFF;
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}
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index = (tmp[1] - 0x30) + ((tmp[0] - 0x30) <<4);
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return index;
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}
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/* retarget the C library printf function to the USART */
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int fputc(int ch, FILE *f)
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{
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usart_data_transmit(EVAL_COM0, (uint8_t)ch);
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while (RESET == usart_flag_get(EVAL_COM0, USART_FLAG_TBE));
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return ch;
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} |