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C8051F I2C(SMBus)程序。
//目标系统: 基于C8051F单片机
//应用软件: Silicon IDE / Keil
/*01010101010101010101010101010101010101010101010101010101010101010101
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实验内容:
写入一些测试数据进EEPROM,再读出,使用P2口与LED相连,观测是否与写入一致
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硬件连接:
将P2口与8位LED指示灯相连。
DVK501(AT24CxxPrlPort) F320 EX
VCC --------- VCC
GND --------- GND
SDA --------- P1.0
SCL --------- P1.1
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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
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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_at24cxx.h>
void main(void)
{
uchar *pRdDat;
PCA0MD &= ~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
SMBus_Init();
Enb_Interrupt();
Write_AT24Cxx(0x00,'P');
Read_AT24Cxx(0x00,pRdDat);
P2 = *pRdDat;
while(1);
}
void Write_AT24Cxx(uchar adr,uchar WrData)
{
SMBus_Write(0xA0,adr,WrData,2);
}
void Read_AT24Cxx(uint adr,uchar *RdData)
{
SMBus_Write(0xA0,adr,0,1);
SMBus_Read(0xA1,RdData,1);
}