58 lines
2.6 KiB
C
58 lines
2.6 KiB
C
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/* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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*/
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/** library to get time from a DCF77 module (API)
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* @file rtc_dcf77.h
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* @author King Kévin <kingkevin@cuvoodoo.info>
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* @date 2016
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* @note peripherals used: GPIO @ref rtc_dcf77_gpio, timer @ref rtc_dcf77_timer
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*/
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#pragma once
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/** @defgroup rtc_dcf77_gpio output to enable DCF module and input to capture DCF signal
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* @{
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*/
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#define RTC_DCF77_ENABLE_RCC RCC_GPIOA /**< GPIO peripheral clock to enable the module */
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#define RTC_DCF77_ENABLE_PORT GPIOA /**< GPIO port to enable the module */
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#define RTC_DCF77_ENABLE_PIN GPIO2 /**< GPIO pinto enable the module */
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#define RTC_DCF77_SIGNAL_RCC RCC_GPIOA /**< GPIO peripheral clock to capture the DCF signal */
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#define RTC_DCF77_SIGNAL_PORT GPIOA /**< GPIO port to capture the DCF signal */
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#define RTC_DCF77_SIGNAL_PIN GPIO3 /**< GPIO pin to capture the DCF signal */
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#define RTC_DCF77_SIGNAL_EXTI EXTI3 /**< GPIO external interrupt to capture the DCF signal */
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#define RTC_DCF77_SIGNAL_IRQ NVIC_EXTI3_IRQ /**< GPIO line interrupt */
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#define RTC_DCF77_SIGNAL_ISR exti3_isr /**< GPIO line interrupt service routine */
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/** @} */
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/** @defgroup rtc_dcf77_timer timer to measure signal puls
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* @{
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*/
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#define RTC_DCF77_TIMER TIM4 /**< timer peripheral */
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#define RTC_DCF77_TIMER_RCC RCC_TIM4 /**< timer peripheral clock */
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#define RTC_DCF77_TIMER_MAX_TIME 2200 /**< the maximum time in ms the timer can count. DCF77 have pulses < 2s */
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/** @} */
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/** set when time information has been received */
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extern volatile bool rtc_dcf77_time_flag;
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/** setup DCF77 time receiver module */
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void rtc_dcf77_setup(void);
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/** switch on DCF77 time receiver module */
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void rtc_dcf77_on(void);
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/** switch off DCF77 time receiver module */
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void rtc_dcf77_off(void);
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/** get last received DCF77 time
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* @return array of {minutes (00-49), hours (00-23), date (01-31), day of the week (1-7=Monday-Sunday), month (01-12), year of the century (00-99)} if received time is valid, NULL else
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*/
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uint8_t* rtc_dcf77_time(void);
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