C8051F060读写EEPROM芯片24lc256源程序.pdfVIP

穷则独善其身，达则兼善天下。——《孟子》

C8051F060读写EEPROM芯片24lc256源程序

//

//F06x_SMBus_EEPROM.c

//

#include//SFRdeclarations

#include

#include

#include

#defineSYSCLK3062500L//SystemclockfrequencyinHz

#defineSMB_FREQUENCY10000L//TargetSCLclockrate

//Thisexamplesupportsbetween10kHzand100kHz

//

sbitRX2=P1^6;//RX2onP1.6

sbitSDA=P0^6;//SMBusonP0.6

sbitSCL=P0^7;//andP0.7

#defineDealay5us_nop_();_nop_();_nop_();_nop_();//延时

5us

#defineWriteDeviceAddress0xa2//写I2C外围器件的寻址地

址

#defineReadDeviceAddress0xa3//读I2C外围器件的寻址地

址

//注：写I2C外围器件的寻址地址为器件的地址，读为器件地址

加1

穷则独善其身，达则兼善天下。——《孟子》

unsignedcharE0;//非应答信号标志位

unsignedcharNACK=0;//错误标志位

unsignedchar

Wdata[12]={0xAA,0xBB,0xCC,0xDD,0xEE,0xFF,0xAB,0xCD,0xEF,0x

99,0x88,0x77};

unsignedcharRdata[12]={0,0,0,0,0,0,0,0,0,0,0,0};

voidSYSCLK_Init(void);

voidPort_Init(void);

voidSMBus_Init(void);

voidWriteI2C(unsignedcharRomAddressH,unsignedchar

RomAddressL,unsignedcharnumber);

voidReadI2C(unsignedcharRomAddressH,unsignedchar

RomAddressL,unsignedcharbytes);

voidmain(void)

{

WDTCN=0xde;//Disablewatchdogtimer

WDTCN=0xad;

SYSCLK_Init();

Port_Ini