STM32读写时钟PCF8563

#include "stm8l15x.h" #include "pcf8563.h" #ifndef WD_DADR #define WD_DADR 0xA2 //write device-address #endif #ifndef RD_DADR #define RD_DADR 0xA3 //read device-address #endif #define CTRL_BUF1 0x00 #define CTRL_BUF2 0x01 #define SECOND_DATA_BUF 0x02 #define MINUTE_DATA_BUF 0x03 #define HOUR_DATA_BUF 0x04 #define DAY_DATA_BUF 0x05 #define WEEK_DATA_BUF 0x06 #define MONTH_DATA_BUF 0x07 #define YEAR_DATA_BUF 0x08 #define MINUTE_AE_BUF 0x09 #define HOUR_AE_BUF 0x0A #define DAY_AE_BUF 0x0B #define WEEK_AE_BUF 0x0C #define CLK_FRQ_BUF 0x0D #define TIMER_CTRL_BUF 0x0E #define COUNT_VAL_BUF 0x0F //changeIntToHex（33），return 0x33 //传参必须为 unsigned 类型 #define changeIntToHex(dec) ( ( ((dec)/10) <<4 ) + ((dec)%10) ) //调用changeHexToInt（0x33），return 33 //传参必须为 unsigned 类型 #define changeHexToInt(hex) ( ( ((hex)>>4) *10 ) + ((hex)%16) ) unsigned char i=0; #define I2C_busy() while((I2C1->SR3&0x02)==1); #define I2C_start1() I2C1->CR2|=0x01; #define I2C_stop() I2C1->CR2|=0x02; #define I2C_Ack() I2C1->CR2|=0x04; #define I2C_NAck() I2C1->CR2&=(~0x04); #define I2C_addrask (I2C1->SR1&0x02) #define I2C_SBask (I2C1->SR1&0x01) #define I2C_TxEask (I2C1->SR1&0x80) #define I2C_RxNeask (I2C1->SR1&0x40) #define I2C_BTF (I2C1->SR1&0x04) #define I2C_BERR_ERR (I2C1->SR2&0x01) #define I2C_AF_ERR (I2C1->SR2&0x04) #define I2C_writebyte(x) I2C1->DR=x; void I2C_Init(void) { I2C1->FREQR=0x0f; //设置频率寄存器 I2C1->CCRH=0x00; //设置始终寄存器高位 I2C1->CCRL=0x50; //设置始终寄存器低位 I2C1->TRISER=0x11; //设置最大SCL上升时间 I2C1->CR1|=0x01; //使能I2C模块 I2C_Ack(); //设置匹配应答 I2C1->CR2|=0x08; //设置接收应答 } void I2C_Start(void) { I2C_busy(); I2C_start1(); while(I2C_SBask==0); } /*-------------传送地址---------------*/ void I2C_SendDAdr(u8 Add) { I2C_writebyte(Add); while(I2C_addrask==0); I2C_busy(); } /*----------------发送数据&接收数据------------------*/ void I2C_SendDat(u8 data) { I2C_writebyte(data); I2C_busy(); while(I2C_TxEask==0); } u8 I2C_RcvDat(void) { u8 i; while(I2C_RxNeask==0); abc: if(I2C_BTF==0x04) {i=I2C1->DR;} else goto abc; if(I2C_BTF==0){} else goto abc; return i; } void WriteAByte(u8 wordAdr,u8 dat) { I2C_Start(); I2C_SendDAdr(WD_DADR); I2C_SendDat(wordAdr); I2C_SendDat(dat); I2C_stop(); } void PCF8563_getTime(u8 *buf) { u8 i; I2C_Start(); I2C_SendDAdr(WD_DADR); I2C_SendDat(SECOND_DATA_BUF); I2C_Start(); I2C_SendDAdr(RD_DADR); for(i=0;i<7;i++) { buf[i]=I2C_RcvDat(); } I2C_NAck(); buf[i]=I2C_RcvDat(); I2C_stop(); I2C_Ack(); buf[0]=buf[0]&0x7f; //get second data buf[1]=buf[1]&0x7f; //get minute data buf[2]=buf[2]&0x3f; //get hour data buf[3]=buf[3]&0x3f; //get day data buf[4]=buf[5]&0x1f; //get month data buf[5]=buf[6]&0x7f; //get year data /* buf[0]=changeHexToInt(buf[0]); buf[1]=changeHexToInt(buf[1]); buf[2]=changeHexToInt(buf[2]); buf[3]=changeHexToInt(buf[3]); buf[4]=changeHexToInt(buf[4]); buf[5]=changeHexToInt(buf[5]); */ } void PCF8563_setTime(u8 year,u8 month,u8 day,u8 hour,u8 minute,u8 second) { year=changeIntToHex(year); month=changeIntToHex(month); day=changeIntToHex(day); hour=changeIntToHex(hour); //将数据的Dex格式转换为Hex格式 minute=changeIntToHex(minute); second=changeIntToHex(second); WriteAByte(YEAR_DATA_BUF,year); WriteAByte(MONTH_DATA_BUF,month); WriteAByte(DAY_DATA_BUF,day); WriteAByte(HOUR_DATA_BUF,hour); WriteAByte(MINUTE_DATA_BUF,minute); WriteAByte(SECOND_DATA_BUF,second); } void PCF8563_Init() { CLK_PeripheralClockConfig(CLK_Peripheral_I2C1, ENABLE); I2C_Init(); WriteAByte(CTRL_BUF1,0x00); //basic setting WriteAByte(CTRL_BUF2,0x00); ///PCF8563_setTime(year,month,day,hour,minute,second); }