pcf8574.h

来自「msp430液晶显示」· C头文件 代码 · 共 18 行

#ifndef _PCF8574_H
#define _PCF8574_H
#define PCF8574  0x40
#define PCF8574A 0x70
#define A2A1A0_0 0x00
#define A2A1A0_1 0x02
#define A2A1A0_2 0x04
#define A2A1A0_3 0x06
#define A2A1A0_4 0x08
#define A2A1A0_5 0x0A
#define A2A1A0_6 0x0C
#define A2A1A0_7 0x0E

#define I2CWR_ADDR  PCF8574A | A2A1A0_1
#define I2CRD_ADDR  I2CWR_ADDR | 0x01

#endif