查看“使用C8051F驱动PCF8563时钟芯片”的源代码


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　　 利用C8051F驱动PCF8563时钟芯片，显示时钟。


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[[File:C8051F_3_8.jpg]]
LCD12864液晶电路原理图
[[File:C8051F_3_7.jpg]]
使用C8051F驱动PCF8563时钟芯片电路原理图


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下面部分从TXT拷出，拷到网页，代码部分缺省了很多空格，比较凌乱，请谅解！
I2C(SMBus)详细程序请查看<a class="Blue_2_12px_" href="https://{{SERVERNAME}}/article/C8051F-4-3-4.htm" style="color: rgb(7, 66, 184);" target="_blank">C8051F I2C(SMBus)程序
。 
LCD12864液晶详细程序请查看<a class="Blue_2_12px_" href="https://{{SERVERNAME}}/article/C8051F-4-3-10.htm" style="color: rgb(7, 66, 184);" target="_blank">C8051F LCD12864程序
。 

//目标系统: 基于C8051F单片机
//应用软件: Silicon IDE / Keil

/*01010101010101010101010101010101010101010101010101010101010101010101
----------------------------------------------------------------------
实验内容：
使用C8051F驱动PCF8563时钟芯片，把读取到的时间在LCD12864上显示
----------------------------------------------------------------------
硬件连接：
DVK501(PCF8563PrlPort)    F320 EX
                           VCC    ---------   VCC
                           GND   ---------   GND
                           SDA    ---------   P1.0  
                           SCL    ---------   P1.1
DVK501(LCD12864PrlPort)  F320 EX
                           VCC    ---------   VCC
                           GND   ---------   GND
                           CS      ---------    P0.7  
                           SID     ---------    P0.6  
                           SCK   ---------    P0.0
----------------------------------------------------------------------
注意事项：
（1）若有加载库程序，请将光盘根目录下的“library”下的“C8051F”文件夹拷到D盘
（2）请详细阅读：光盘根目录下的“说明书首页.htm”里的相应产品说明
----------------------------------------------------------------------
10101010101010101010101010101010101010101010101010101010101010101010*/
#define _DVK501_F320_EX_
#include <c8051f320.h>
#include <../../../../library/C8051F/ws_clock.h>
#include <../../../../library/C8051F/ws_delay.h>
#include <../../../../library/C8051F/ws_iic_port.h>
#include <../../../../library/C8051F/ws_pcf8563_port.h>
#include <../../../../library/C8051F/ws_lcd_st7920_port.h>
void main(void)
{ 
uchar time[3],tmp=0;
PCA0MD &amp;= ~0x40; // Clear watchdog timer enable
clock_external();	// Set oscillator in external,the clock is 12M
delay_ms(100);
Check_SDA(); 
XBR1 = 0x40; // Enable crossbar and weak pull-ups
SPI_Init();
st7920LcdInit();
showLine(0,0,lcd_buffer,"PCF8563 Example");
showLine(0,1,lcd_buffer,"Set Time: OK");
showLine(0,2,lcd_buffer,"Read Time:");
refreshLCD(lcd_buffer);
SMBus_Init();
Enb_Interrupt(); 
PCF8563_init(); 
PCF8563_setTime(12,0,0); 
delay_ms(10);
while(1)
{ 
PCF8563_getTime(time);
if(time[0]!=tmp)
{
showLine(8,3,lcd_buffer,"%d2:%d2:%d2",time[2],time[1],time[0]);
refreshLCD(lcd_buffer);
}
tmp=time[0];
}
}
/*--------------------------------------------------------------------
函数全称：十进制强制转换为十六进制
函数功能：
注意事项：
提示说明：调用changeIntToHex（33），return 0x33
输 入：
返 回：
--------------------------------------------------------------------*/
#define changeIntToHex(dec)	( (((dec)/10) <<4) + ((dec)%10) )
/*--------------------------------------------------------------------
函数全称：十进制化为十六进制，并以十进制格式返回
函数功能：
注意事项：传参必须为 unsigned 类型，否则移位结果可能吓你一跳
提示说明：调用converseIntToHex（33），return 21
输 入：
返 回：
--------------------------------------------------------------------*/
#define converseIntToHex(dec)	( (((dec)>>4) *10) + ((dec)%16) )
/*--------------------------------------------------------------------
函数全称：十六进制强制转换为十进制
函数功能：
注意事项：传参必须为 unsigned 类型，否则移位结果可能吓你一跳
提示说明：调用changeHexToInt（0x33），return 33
输 入：
返 回：
--------------------------------------------------------------------*/
#define changeHexToInt(hex)	( (((hex)>>4) *10 ) + ((hex)%16) )
/*--------------------------------------------------------------------
函数全称：十六进制化为十进制，，并以十六进制格式返回
函数功能：
注意事项：
提示说明：调用converseHexToInt（0x33），return 0x51
输 入：
返 回：
--------------------------------------------------------------------*/
#define converseHexToInt(hex)	( (((hex)/10) <<4 ) + ((hex)%10) )
void WriteAByte(uchar wordAdr,uchar dat);
void ReadNByte(uchar wordAdr,uchar *pRdDat);
void PCF8563_getTime(uchar *buf);
void PCF8563_setTime(uchar hour,uchar minute,uchar second);
void PCF8563_init(void);
#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
void WriteAByte(uchar wordAdr,uchar dat)
{
SMBus_Write(0xA2,wordAdr,dat,2);
}
void ReadNByte(uchar wordAdr,uchar *pRdDat)
{ 
SMBus_Write(0xA2,wordAdr,0,1);
SMBus_Read(0xA3,pRdDat,3);
}
void PCF8563_getTime(uchar *buf)
{
ReadNByte(SECOND_DATA_BUF,buf);
buf[0] = buf[0] &amp; 0x7f;	//get second data
buf[1] = buf[1] &amp; 0x7f;	//get minute data
buf[2] = buf[2] &amp; 0x3f;	//get hour data
buf[0] = changeHexToInt(buf[0]);
buf[1] = changeHexToInt(buf[1]);
buf[2] = changeHexToInt(buf[2]);
}
void PCF8563_setTime(uchar hour,uchar minute,uchar second)
{
hour = changeIntToHex(hour);	//将数据的Dex格式转换为Hex格式
minute = changeIntToHex(minute);
second = changeIntToHex(second);
WriteAByte(HOUR_DATA_BUF,hour);
WriteAByte(MINUTE_DATA_BUF,minute);
WriteAByte(SECOND_DATA_BUF,second);
}
void PCF8563_init(void)
{
WriteAByte(CTRL_BUF1,0x00);	//basic setting
WriteAByte(CTRL_BUF2,0x12);	//alarm enable
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改变初始化时间，将语句“PCF8563_setTime(12,0,0);”改成 “PCF8563_setTime(1,2,3);”，断电重启后查看现象。
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