24c16.h

IC卡(24C16)读写源程序(基于KT8808, x86兼容)

#include "gpio.h"
#define AT24C16_PORT GPIO_PORT_INDEX


#define WriteDeviceAddress 0xa0
#define ReadDviceAddress 0xa1

#define AT24C16_SEL GPIOC_SEL		// 选择寄存器
#define AT24C16_CTL GPIOC_CTL		// 控制寄存器
#define AT24C16_DAT GPIOC_DAT    	// 数据寄存器

#define AT24C16_1_SDA_H 0x80
#define AT24C16_1_SDA_L 0x7f
#define AT24C16_1_SCL_H 0x40
#define AT24C16_1_SCL_L 0xbf

#define AT24C16_2_SDA_H 0x20
#define AT24C16_2_SDA_L 0xdf
#define AT24C16_2_SCL_H 0x10
#define AT24C16_2_SCL_L 0xef

#define _nop_()  { asm nop }

extern INT8U gpioc;

#define SCL_0 { \
		gpioc &= at24c16_scl_l; \
		outport(AT24C16_PORT, AT24C16_DAT + (gpioc<<8)); \
	}
	
#define SCL_1 { \
		gpioc |= at24c16_scl_h; \
		outport(AT24C16_PORT, AT24C16_DAT + (gpioc<<8)); \
	}

#define SDA_0 { \
		gpioc &= at24c16_sda_l; \
		outport(AT24C16_PORT, AT24C16_DAT + (gpioc<<8)); \
	}
	
#define SDA_1 { \
		gpioc |= at24c16_sda_h; \
		outport(AT24C16_PORT, AT24C16_DAT + (gpioc<<8)); \
	}