group.h

12位11通道AD转换芯片tlv2553,12位双通道DA转换芯片tlv5638

#include "reg52.h"					 	    //头文件
#include "absacc.h"

#define key_shift 11
#define key_P 12
#define key_enter 13
#define key_down 14
#define key_up 15
#define key_A 16
#define key_D 17
#define key_C 18
#define key_E 19
#define Num_lock 20

extern void delay(unsigned int i);
extern void delay5ms(void);
extern void delay400ms(void);
extern void display_char(unsigned char x,unsigned char y,unsigned char ch);
extern void display_string(unsigned char x,unsigned char y,unsigned char code *string);
extern void inttilcs(void);
extern void lcdclear(void);
extern void DA_main(void);                    //DA单独主函数
extern void DA_IN(unsigned int ch);           //DA数据输入
extern void AD_main(void);                    //AD单独主函数
extern void AD_IN(unsigned char ch);          //AD数据输入
extern unsigned int AD_GET(unsigned char ch); //AD数据转化返回值

extern unsigned char key_i;
extern unsigned char count;
extern unsigned char g_add;


sbit AD_EOC=P3^2;
sbit AD_CLK=P1^0;
sbit AD_ADD=P1^1;
sbit AD_OUT=P1^2;
sbit AD_CS=P1^3;
sbit DA_ADD=P1^4;
sbit DA_CLK=P1^5;
sbit DA_CS=P1^6;