RX-8025NB Real Time Clock Module by EPSON
Dependents: TYBLE16_simple_data_logger Check_external_RTC
RX8025NB.h
- Committer:
- kenjiArai
- Date:
- 2015-06-05
- Revision:
- 0:cdf2921959b4
- Child:
- 1:817e81048235
File content as of revision 0:cdf2921959b4:
/* * mbed library program * Control RX-8025NB Real Time Clock Module * EPSON * * Copyright (c) 2015 Kenji Arai / JH1PJL * http://www.page.sannet.ne.jp/kenjia/index.html * http://mbed.org/users/kenjiArai/ * Created: June 3rd, 2015 * Revised: June 5th, 2015 * * 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. */ /* *---------------- REFERENCE ---------------------------------------------------------------------- * Original Information * http://www.epsondevice.com/docs/qd/ja/DownloadServlet?id=ID000515 * Sensor board * http://akizukidenshi.com/catalog/g/gK-08585/ */ #ifndef RX8025_H #define RX8025_H #include "mbed.h" // RTC EPSON RX8025 // 7bit address = 0b1010001(No other choice) #define RX8025ADDR (0x32 << 1) #define RTC_Wk_Sunday ((uint8_t)0x00) #define RTC_Wk_Monday ((uint8_t)0x01) #define RTC_Wk_Tuesday ((uint8_t)0x02) #define RTC_Wk_Wednesday ((uint8_t)0x03) #define RTC_Wk_Thursday ((uint8_t)0x04) #define RTC_Wk_Friday ((uint8_t)0x05) #define RTC_Wk_Saturday ((uint8_t)0x06) // Register definition #define RX8025_REG_SEC 0 #define RX8025_REG_MIN 1 #define RX8025_REG_HOUR 2 #define RX8025_REG_WDAY 3 #define RX8025_REG_DAY 4 #define RX8025_REG_MON 5 #define RX8025_REG_YEAR 6 #define RX8025_REG_OFFSET 7 #define RX8025_REG_ALARMW_MIN 8 #define RX8025_REG_ALARMW_HOUR 9 #define RX8025_REG_ALARMW_WDAY 0xa #define RX8025_REG_ALARMD_MIN 0xb #define RX8025_REG_ALARMD_HOUR 0xc #define RX8025_REG_RESERVED 0xd #define RX8025_REG_CONTL1 0xe #define RX8025_REG_CONTL2 0xf // Buffer size #define RTC_BUF_SIZ (RX8025_REG_CONTL2 + 5) /** Interface for RTC (I2C Interface) EPSON RX8025 * * Standalone type RTC via I2C interface * * @code * #include "mbed.h" * * // I2C Communication * RX8025 RX8025(dp5,dp27); // RTC(RX8025) SDA, SCL (Fixed address) * // If you connected I2C line not only this device but also other devices, * // you need to declare following method. * I2C i2c(dp5,dp27); // SDA, SCL * RX8025 RX8025(i2c); // RTC(RX8025) (Fixed address) * * int main() { * tm t; * time_t seconds; * char buf[40]; * * RX8025.get_time_rtc(&t); // read RTC data * seconds = mktime(&t); * strftime(buf, 40, "%I:%M:%S %p (%Y/%m/%d)", localtime(&seconds)); * printf("Date: %s\r\n", buf); * } * @endcode */ class RX8025 { public: typedef struct { // BCD format uint8_t rtc_seconds; uint8_t rtc_minutes; uint8_t rtc_hours; uint8_t rtc_weekday; uint8_t rtc_date; uint8_t rtc_month; uint8_t rtc_year_raw; uint16_t rtc_year; } rtc_time; /** Configure data pin * @param data SDA and SCL pins */ RX8025(PinName p_sda, PinName p_scl); /** Configure data pin (with other devices on I2C line) * @param I2C previous definition */ RX8025(I2C& p_i2c); /** Read RTC data with Standard C "struct tm" format * @param tm (data save area) * @return none but all data in tm */ void read_rtc_std(tm *); void get_time_rtc(tm *); /** Write data to RTC data with Standard C "struct tm" format * @param tm (save writing data) * @return none but all data in tm */ void write_rtc_std(tm *); void set_time_rtc(tm *); /** Read one byte from specific register * @param register address * @return register data */ uint8_t read_reg_byte(uint8_t reg); /** Write one byte into specific register * @param register address, data * @return register saved data */ uint8_t write_reg_byte(uint8_t reg, uint8_t data); /** Read RTC data with own format * @param tm (data save area) * @return none but all data in tm */ void read_rtc_direct(rtc_time *); /** Read RTC data with own format * @param tm (save writing data) * @return none but all data in tm */ void write_rtc_direct(rtc_time *); /** Set I2C clock frequency * @param freq. * @return none */ void frequency(int hz); protected: uint8_t bin2bcd(uint8_t); uint8_t bcd2bin(uint8_t); I2C _i2c; private: uint8_t RX8025_addr; uint8_t rtc_buf[RTC_BUF_SIZ]; // buffer for RTC }; #endif // RX8025_H