LPC210x的I2c主模式底层驱动代码，可以作为参考教程使用，已上机调试通过。
#define IN_I2C
#include "config.h"
static uint8 *I2cBuf;
static OS_EVENT *I2cSem;
static OS_EVENT *I2cMbox;
static int16 I2cNbyte;
static uint8 I2cAddr;
#define I2C_WRITE_END 1 /* 写完成 */
#define I2C_READ_END 2 /* 读完成 */
#define I2C_NOT_GET_BUS 4 /* 丢失仲裁 */
#define I2C_ACK_ERR 8 /* 接收ACK错误 */
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1 序言........................................................................................................................ 3
1.1 版本1.0-1992 .................................................................................................................... 3
1.2 版本2.0-1998 .................................................................................................................... 3
1.3 版本2.1-2000 .................................................................................................................... 3
1.4 购买Philips 的I2C 总线元件.............................................................................................. 3
2 I2C 总线使设计人员和厂商都得益.......................................................................... 3
2.1 设计人员的得益................................................................................................................. 4
2.2 厂商的得益......................................................................................................................... 5
3 介绍I2C 总线规范................................................................................................... 6
4 I2C 总线的概念....................................................................................................... 6
5 总体特征................................................................................................................. 7
6 位传输..................................................................................................................... 7
6.1 数据的有效性..................................................................................................................... 7
6.2 起始和停止条件................................................................................................................. 8
7 传输数据................................................................................................................. 9
7.1 字节格式............................................................................................................................ 9
7.2
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