DS3231 STM32F1 Hal Kütüphanesi

ds3231.c dosyası

#include "ds3231.h"

//--------------------------------------
char str[100];
uint8_t data[256];
uint16_t size;
uint8_t readBuf[7];

char * days[] = {
    "Sun",
    "Mon",
    "Tue",
    "Wed",
    "Thr",
    "Fri",
    "Sat"
};

struct Calendar {
    uint8_t sec, min, hour, day, date, month, year;
}
calendar;

uint8_t BCD2DEC(uint8_t c) {
    uint8_t ch = ((c >> 4) * 10 + (0x0F & c));
    return ch;
}

uint8_t DEC2BCD(uint8_t c) {
    uint8_t ch = ((c / 10) << 4) | (c % 10);
    return ch;
}

//--------------------------------------
void DS3231_sendData(I2C_HandleTypeDef hi, uint8_t DEV_ADDR) {
    uint8_t writeBuf[1];
    writeBuf[0] = 0;
    while (HAL_I2C_Master_Transmit( & hi, (uint16_t) DEV_ADDR,
            (uint8_t * ) & writeBuf, sizeof(writeBuf), (uint32_t) 1000) != HAL_OK) {
        if (HAL_I2C_GetError( & hi) != HAL_I2C_ERROR_AF) {
            size = sprintf((char * ) data, "DS3231 write failed\n");
        }
    }
}
//--------------------------------------
void DS3231_setDate(I2C_HandleTypeDef hi, uint8_t DEV_ADDR) {
    uint8_t data[8];

    data[DS3231_CONTROL] = 0; // should be zero REGISTER SELECT from that will start
    data[DS3231_SECONDS] = calendar.sec; //sec
    data[DS3231_MINUTES] = calendar.min; //min
    data[DS3231_HOURS] = calendar.hour; //hour
    data[DS3231_DAY] = calendar.day; //day
    data[DS3231_YEAR] = calendar.year; //year
    data[DS3231_MONTH] = calendar.month; //month
    data[DS3231_DATE] = calendar.date; //date

    while (HAL_I2C_Master_Transmit( & hi, (uint16_t) DEV_ADDR, (uint8_t * ) & data,
            8, (uint32_t) 1000) != HAL_OK) {
        if (HAL_I2C_GetError( & hi) != HAL_I2C_ERROR_AF) {
            size = sprintf((char * ) data, "DS3231 write failed\n");

        }
    }
}
//--------------------------------------
uint8_t * I2C_ReadRawData(I2C_HandleTypeDef hi, uint8_t DEV_ADDR) {
    while (HAL_I2C_Master_Receive( & hi, (uint16_t) DEV_ADDR, (uint8_t * ) & readBuf,
            (uint16_t) 7, (uint32_t) 1000) != HAL_OK) {
        if (HAL_I2C_GetError( & hi) != HAL_I2C_ERROR_AF) {
            size = sprintf((char * ) data, "DS3231 read failed\n");
        }
    }
    return readBuf;
}

void I2C_ReadCalendarData(I2C_HandleTypeDef hi, uint8_t DEV_ADDR) {
    while (HAL_I2C_Master_Receive( & hi, (uint16_t) DEV_ADDR, (uint8_t * ) & readBuf,
            (uint16_t) 7, (uint32_t) 1000) != HAL_OK) {
        if (HAL_I2C_GetError( & hi) != HAL_I2C_ERROR_AF) {
            size = sprintf((char * ) data, "DS3231 read failed\n");
        }
    }
    calendar.sec = readBuf[0];
    calendar.min = readBuf[1];
    calendar.hour = readBuf[2];
    calendar.day = readBuf[3];
    calendar.date = readBuf[4];
    calendar.month = readBuf[5];
    calendar.year = readBuf[6];
}

char * retrnAsString(uint8_t data) {
    static char res[2];
    uint8_t tempVal = BCD2DEC(data);
    sprintf(res, "%c%c", ((tempVal / 10) % 10) + 0x30, (tempVal % 10) + 0x30);
    return res;
}
uint8_t readIntSeconds() {
    return calendar.sec;
}

char * readSeconds() {
    return retrnAsString(calendar.sec);
}

char * readMinutes() {
    return retrnAsString(calendar.min);
}

char * readHours() {
    return retrnAsString(calendar.hour);
}

// Day Pazartesi ->Pazar
char * readDay() {
    static char res[2];
    uint8_t tempVal = BCD2DEC(calendar.day);
    sprintf(res, "%c", (tempVal % 10) + 0x30);
    return res;
}

char * readDate() {
    return retrnAsString(calendar.date);
}

char * readMonth() {
    return retrnAsString(calendar.month);
}

char * readYear() {
    return retrnAsString(calendar.year);
}

void setSeconds(uint8_t sec) {

    calendar.sec = DEC2BCD(sec);
}

void setMinutes(uint8_t min) {
    calendar.min = DEC2BCD(min);
}

void setHour(uint8_t hour) {
    calendar.hour = DEC2BCD(hour);
}

void setDay(uint8_t day) {
    calendar.day = DEC2BCD(day);
}

void setDate(uint8_t date) {
    calendar.date = DEC2BCD(date);
}

void setMonth(uint8_t month) {
    calendar.month = DEC2BCD(month);
}

void setYear(uint8_t year) {
    calendar.year = DEC2BCD(year);
}

STM32F103C8T6 ile RTC Uygulaması Kodları

/* USER CODE BEGIN Header */
/**
  ******************************************************************************
  * @file           : main.c
  * @brief          : Main program body
  ******************************************************************************
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  * that are not between comment pairs USER CODE BEGIN and
  * USER CODE END. Other portions of this file, whether 
  * inserted by the user or by software development tools
  * are owned by their respective copyright owners.
  *
  * COPYRIGHT(c) 2019 STMicroelectronics
  *
  * Redistribution and use in source and binary forms, with or without modification,
  * are permitted provided that the following conditions are met:
  *   1. Redistributions of source code must retain the above copyright notice,
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  *      this list of conditions and the following disclaimer in the documentation
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  ******************************************************************************
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/* USER CODE END Header */