stm32f103的PCF8563驱动代码

#include "pcf8563.h" #include "bsp_iic.h" #include "bsp_SysTick.h" #include <stdio.h> /****************************************************************************** * @file pcf8563.c * @author Tanch * @version V1.0.0 * @date 03/10/2019 * @brief pcf8563驱动 ******************************************************************************/ //************************************ // Method: DecToBCD // FullName: DecToBCD // Access: public // Returns: unsigned char // Parameter: unsigned char _dec // Description: 十进制转BCD编码 //************************************ unsigned char DecToBCD(unsigned char _dec) { unsigned char temp = 0; while (_dec >= 10) { temp++; _dec -= 10; } return ((unsigned char)(temp << 4) | _dec); } //************************************ // Method: BCDToDec // FullName: BCDToDec // Access: public // Returns: unsigned char // Parameter: unsigned char _BCD // Description: BCD编码转十进制 //************************************ unsigned char BCDToDec(unsigned char _BCD) { unsigned char temp = 0; temp = ((unsigned char)(_BCD & (unsigned char)0xF0) >> (unsigned char)0x04) * 10; return (temp + (_BCD & (unsigned char)0x0F)); } /****************************************************************************** * @name： PCF8563_ReadOneByte * @param： ReadAddr：读数据地址 * @note： PCF8563读寄存器值 * @retval：读到的值 ******************************************************************************/ uint8_t PCF8563_ReadOneByte(u16 ReadAddr) { uint8_t temp=0; IIC_Start(); IIC_Send_Byte(Write_ADD); IIC_WaitAck(); IIC_Send_Byte(ReadAddr); IIC_WaitAck(); IIC_Start(); IIC_Send_Byte(Write_ADD|0X01); IIC_WaitAck(); temp=IIC_Read_Byte(0); IIC_Stop(); return temp; } /****************************************************************************** * @name： PCF8563_WriteOneByte * @param： WriteAddr：写数据地址,DataToWrite：要写的数据 * @note： PCF8563向寄存器写值 * @retval：none ******************************************************************************/ void PCF8563_WriteOneByte(u8 WriteAddr,u8 DataToWrite) { IIC_Start(); IIC_Send_Byte(Write_ADD); IIC_WaitAck(); IIC_Send_Byte(WriteAddr); IIC_WaitAck(); IIC_Send_Byte(DataToWrite); IIC_WaitAck(); IIC_Stop(); } /****************************************************************************** * @name： PCF8563_Init * @param： none * @note： PCF8563初始化配置 * @retval：none ******************************************************************************/ void PCF8563_Init(void) { IIC_GPIO_Init(); SysTick_Delay_Ms(20); PCF8563_WriteOneByte(0x00,0x00); PCF8563_WriteOneByte(0x01,0x00); PCF8563_WriteOneByte(0x0d,0x81); } /****************************************************************************** * @name： Read_Date * @param： date：时间结构体地址 * @note： PCF8563读时间，写入结构体中 * @retval：TURE-读取成功 ******************************************************************************/ char Read_Date(DATE* date) { date->second = (PCF8563_ReadOneByte(PCF8563_SECOND_ADDRESS))&0x7f; date->min = (PCF8563_ReadOneByte(PCF8563_MINUTE_ADDRESS))&0x7f; date->hour = (PCF8563_ReadOneByte(PCF8563_HOUR_ADDRESS))&0x3f; date->day = (PCF8563_ReadOneByte(PCF8563_DAY_ADDRESS))&0x3f; date->mon = (PCF8563_ReadOneByte(PCF8563_MONTH_ADDRESS))&0x1f; date->year = (PCF8563_ReadOneByte(PCF8563_YEAR_ADDRESS))&0xff; date->second = BCDToDec(date->second); date->min = BCDToDec(date->min); date->hour = BCDToDec(date->hour); date->day = BCDToDec(date->day); date->mon = BCDToDec(date->mon); date->year = BCDToDec(date->year); return TURE; } /****************************************************************************** * @name： Write_Date * @param： date：时间结构体 * @note： 将时间结构体写入PCF8563中 * @retval：TURE-写入成功 ******************************************************************************/ char Write_Date(DATE date) { date.year = DecToBCD(date.year); date.mon = DecToBCD(date.mon); date.day = DecToBCD(date.day); date.hour = DecToBCD(date.hour); date.min = DecToBCD(date.min); date.second = DecToBCD(date.second); PCF8563_WriteOneByte(0x00,0x20); PCF8563_WriteOneByte(PCF8563_YEAR_ADDRESS ,date.year); PCF8563_WriteOneByte(PCF8563_MONTH_ADDRESS ,date.mon); PCF8563_WriteOneByte(PCF8563_DAY_ADDRESS ,date.day); PCF8563_WriteOneByte(PCF8563_HOUR_ADDRESS ,date.hour); PCF8563_WriteOneByte(PCF8563_MINUTE_ADDRESS,date.min); PCF8563_WriteOneByte(PCF8563_SECOND_ADDRESS,date.second); PCF8563_WriteOneByte(CONTROL_STATUS_1,0X00); return TURE; } #ifdef PCF8563_TEST #include "stm32f10x.h" #include <stdio.h> #include "usart.h" #include "bsp_SysTick.h" int main(void) { SysTick_Init(); USART1_Init(); PCF8563_Init(); printf("system startup!!!\r\n"); DATE date = { .year_H2bit = 20, .year = 20, .mon = 3, .day = 10, .hour = 21, .min = 49, .second = 00, }; //Write_Date(date); Read_Date(&date); while(1) { Read_Date(&date); printf("BeijinTime = %d%d年%d月%d日%d:%d:%d\r\n",date.year_H2bit,date.year,date.mon,date.day,date.hour,date.min,date.second); SysTick_Delay_Ms(1000); }; } #endif