如何在linux系统下添加pcf8563驱动的方法步骤

linux的驱动一般有两种格式，分别为：tar和rpm格式。 rpm安装步骤： 1．将驱动程序文件bcm5700-.src.rpm复制到一个临时目录中，并在此目录中运行以下命令： rpm –ivh bcm5700-.src.rpm 2．运行以下命令切换到驱动目录中： cd /usr/src/redhat/SP...

#include<reg51.h>

#include <intrins.h>

#define uchar unsigned char

#define uint unsigned int

sbit pcf8563_scl=P0^4

sbit pcf8563_sda=P0^3

uchar num[10]={0x30,0x31,0x32,0x33,0x34,0x35,0x36,0x37,0x38,0x39}//数字表

sbit clk=P2^0

sbit dio=P2^1

sbit cfd=P2^2 //充放电开关，

sbit en=P2^3

sbit rw=P2^4

sbit rs=P2^5

sbit deng=P2^6 //测试灯

sbit adcs=P2^7

bit busy=0

uchar sg

uchar sd

uchar fg

uchar fd

uchar mg

uchar md

uchar hou=0

uchar min=0

uchar sec=0

uchar subadd

uchar dat

uchar number

void start_pcf8563()

void send_pcf8563_byte()

void LcdIni(void)

void WrOp(uchar dat)

void WrDat(uchar dat)

void ChkBusy(void)

void display0(void)

void display1(void)

void stop_pcf8563()

void receive_pcf8563_byte()

void spit_time()

void LcdIni()//初始化LCD

{WrOp(0x01)

WrOp(0x38)

WrOp(0x0c)

WrOp(0x06)

}

void WrOp(uchar dat)//写LCD显示地址

{

P1 =dat

rs=0

rw=0

en=0

ChkBusy()

en=1

}

void WrDat(uchar dat)//写LCD显示数据

{ P1=dat

rs=1

rw=0

en=0

ChkBusy()

en=1

}

void ChkBusy() //检查LCD是否忙

{

P1=0xff

rs=0

rw=1

en=0

_nop_()

en=1

while(P1&0x80)

}

void display0() //显示必要的背景

{

WrOp(0x80)

WrDat('T')

WrOp(0x81)

WrDat(':')

WrOp(0x84)

WrDat(':')

WrOp(0x87)

WrDat(':')

}

void spit_time()

{

sg=(int)hou/10

sd=(int)hou%10

fg=(int)min/10

fd=(int)min%10

mg=(int)sec/10

md=(int)sec%10

}

void display1()//显示时间六位

{

uchar temp6

uchar temp5

uchar temp4

uchar temp3

uchar temp2

uchar temp1

WrOp(0x82)

temp6=num[sg]

WrDat(temp6)

WrOp(0x83)

temp5=num[sd]

WrDat(temp5)

WrOp(0x85)

temp4=num[fg]

WrDat(temp4)

WrOp(0x86)

temp3=num[fd]

WrDat(temp3)

WrOp(0x88)

temp2=num[mg]

WrDat(temp2)

WrOp(0x89)

temp1=num[md]

WrDat(temp1)

}

void Send_pcf8563_byte(uchar bb) //向PCF8563发送一个字节

{

uchar aa

pcf8563_scl=0

for(aa=0aa<8aa++)

{

if((bb&0x80)==0x80)

{

pcf8563_sda=1

}

else

{

pcf8563_sda=0

}

pcf8563_scl=1

pcf8563_scl=0

bb=bb<<1

}

_nop_()

_nop_()

pcf8563_sda=1

pcf8563_scl=1

busy=0

if(pcf8563_sda)

{

busy=1

}

else

{

_nop_()

_nop_()

pcf8563_scl=0

busy=0

}

}

void write_pcf8563(uchar subadd,uchar dat)// 向PCF8563对应地址写数据

{

start_pcf8563()

Send_pcf8563_byte(0xa2)

if(!busy)

{

Send_pcf8563_byte(subadd)

if(!busy)

{

Send_pcf8563_byte(dat)

}

}

stop_pcf8563()

}

void read_pcf8563() //读当时的时，分，钞

{

start_pcf8563()

Send_pcf8563_byte(0xa2)

if(!busy)

{

Send_pcf8563_byte(0x02)

if(!busy)

{

start_pcf8563()

Send_pcf8563_byte(0xa3)

receive_pcf8563_byte()

sec=number&0x7f

start_pcf8563()

Send_pcf8563_byte(0xa3)

receive_pcf8563_byte()

min=number&0x7f

start_pcf8563()

Send_pcf8563_byte(0xa3)

receive_pcf8563_byte()

hou=number&0x3f

}

}

stop_pcf8563()

}

void receive_pcf8563_byte() //从PCF8563接受一个字节

{uchar cc

pcf8563_sda=1

number=0

for(cc=0cc<8cc++)

{

number<<=1

pcf8563_scl=0

pcf8563_scl=1

_nop_()

_nop_()

number= number|pcf8563_sda

}

pcf8563_scl=0

_nop_()

_nop_()

}

void start_pcf8563() //开启PCF8563IIC

{

pcf8563_sda=1

pcf8563_scl=1

pcf8563_sda=0//SCL为低，SDA执行一个上跳

pcf8563_scl=0//SCL为低，嵌住数据线

}

void stop_pcf8563() //关闭PCF8563IIC

{

pcf8563_sda=0

pcf8563_scl=1

pcf8563_sda=1//SCL为高，SDA执行一个上跳

pcf8563_scl=0//SCL为低，嵌住数据线

}

void main(void)

{

LcdIni() //初始化屏

display0() //显示必要的背影

write_pcf8563(0x02,sec) //写钞

write_pcf8563(0x03,min) //写分

write_pcf8563(0x04,hou) //写时

while(1)

{

read_pcf8563()//读当前时间

spit_time() //切害时间，为显示做准备

display1()//显示当前时间

}

}

---