def_pin.h

W78E516实现高速公路收费站语音费额显示器资料之三:产品的语音,通讯,显示全套源代码程序.

/*****************51引脚定义************************/
//看门狗
sbit wdi     = P2^7;

//595
sbit sck     = P1^2;
sbit rck     = P1^3;
sbit ser     = P1^4;

//外部RAM
sbit rd_ram  = P3^7;
sbit ce_ram  = P1^5;

//与CPU1相连
sbit pin_wrram= P1^7;        //受通讯CPU控制
sbit pin_full = P1^6;        //受通讯CPU控制

//行选
sbit a_138   = P3^0;
sbit b_138   = P3^1;
sbit c_138   = P3^2;
sbit ce1_138 = P3^3;
sbit ce2_138 = P3^4;
sbit ce3_138 = P3^5;
sbit ce4_138 = P3^6;

//W78E516特殊控制寄存器
sfr CHPENR   = 0xF6;        
sfr CHPCON   = 0xBF;