85 lines
1.8 KiB
C
85 lines
1.8 KiB
C
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/*
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* Driver for DS1302 RTC
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*
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* Part of esp-open-rtos
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* Copyright (C) 2016 Ruslan V. Uss <unclerus@gmail.com>,
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* Pavel Merlyakov <merzlyakovpavel@gmail.com>
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* BSD Licensed as described in the file LICENSE
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*/
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#ifndef EXTRAS_DS1302_H_
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#define EXTRAS_DS1302_H_
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#include <stdint.h>
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#include <stdbool.h>
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#include <time.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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#define DS1302_RAM_SIZE 31
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void ds1302_init(uint8_t ce_pin, uint8_t io_pin, uint8_t sclk_pin);
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/**
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* \brief Start/stop clock
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* \param start Start clock if true
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* \return False if RTC is write-protected
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*/
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bool ds1302_start(bool start);
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/**
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* \brief Get current clock state
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* \return true if clock running
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*/
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bool ds1302_is_running();
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/**
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* \brief Enable/disable write protection
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* \param protect Set RTC write-protected if true
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*/
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void ds1302_set_write_protect(bool protect);
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/**
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* \brief Get write protection status
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* \return true if RTC write-protected
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*/
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bool ds1302_get_write_protect();
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/**
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* \brief Get current time
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* \param time Pointer to the time struct to fill
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*/
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void ds1302_get_time(struct tm *time);
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/**
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* \brief Set time to RTC
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* \param time Pointer to the time struct
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* \return False if RTC is write-protected
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*/
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bool ds1302_set_time(const struct tm *time);
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/**
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* \brief Read RAM contents into the buffer
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* \param offset Start byte, 0..55
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* \param buf Buffer
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* \param len Bytes to read, 1..56
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* \return false if error occured (invalid offset or buffer too big)
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*/
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bool ds1302_read_sram(uint8_t offset, void *buf, uint8_t len);
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/**
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* \brief Write buffer to RTC RAM
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* \param offset Start byte, 0..55
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* \param buf Buffer
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* \param len Bytes to write, 1..56
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* \return false if error occured (invalid offset or buffer too big)
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*/
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bool ds1302_write_sram(uint8_t offset, void *buf, uint8_t len);
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#ifdef __cplusplus
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}
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#endif
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#endif /* EXTRAS_DS1302_H_ */
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