kk.rar_串行AD_串行AD 单片机

#include <REG931.H> #include <INTRINS.H> typedef unsigned char uchar; typedef unsigned int uint; #define ClkDown OCC = 0 //P1.7 #define ClkUp OCC = 1 #define DataLow KB0 = 0 //P0.0 #define DataHigh KB0 = 1 #define LEDown OCD = 0 //P2.1 #define LEUp OCD = 1 sbit LED1 = P2^2; sbit LED2 = P2^3; sbit KB = P1^6; sbit adcs = P2^4; //out sbit dout = P2^3; //in sbit adclk = P1^4; //out // 间接访问方式地址定义 // 控制引脚定义 sbit RS =P1^7; sbit RW =P2^1; sbit Elcm=P2^0; //////////////////////////////////////////////////////////////////////////// #define DataPort P0// 数据端口 //instruction #define Busy 0x80 #define Work_M 0x38//n=1,f=0 #define Cls 0x01 #define Input_M 0x06//i/d=1 ac++ s=0 screen move=off #define Screen_Off 0x08 #define Disp_M 0x0c//d=1 disp=on c=0 cursor=off #define Ddram_Al1 0x80; #define Ddram_Al2 0xc0;//0x80+0x40 #define Wait1us _nop_(); #define Wait2us {_nop_();_nop_();} #define Wait4us {Wait2us;Wait2us;} #define Wait8us {Wait4us;Wait4us;} #define Wait10us {Wait8us;Wait2us;} /* 设为全局变量 */ unsigned char com,dat; /////////////////////////////////////////////// uchar dispc[2][16]= { ' ',' ','O','U','T','P','U','T',' ','P','O','W','E','R',' ',' ', ' ',' ',' ',' ',' ',' ',' ',' ',' ',' ','d','B','m',' ',' ',' ' }; uchar low[2][16]= { ' ',' ','O','U','T','P','U','T',' ','P','O','W','E','R',' ',' ', ' ',' ',' ',' ',' ',' ',' ',' ',' ',' ','d','B','m',' ',' ',' ' }; uchar pllfreq[6]={2,0,8,0,0,0}; uchar pllstate=1; ///////////////////////////////////////// code unsigned char ctab[16]={'0','1','2','3','4','5','6','7','8','9','a','b','c','<','o','w'}; ///////////////////////////////////////// //+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ //+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ uchar rflag=0; //定义读标志 uchar sflag=0; //定义发送标志 /////////////////// #define SCOUNT 10 #define RCOUNT 10 //note : cause the invalid ip --> 0000 //idata <256 data <128 bdata bit pdata movx @ri xdata movx @dptr unsigned char data countsms; unsigned char data rpoint;//point the next address unsigned char data spoint; //********************** unsigned char idata ssbuf[SCOUNT+1]; //********************** unsigned char data rbuf[RCOUNT+1]; uchar rtemp; //====================================================================== //串口接收中断 void UART_ISR(void) interrupt 4 using 3//当接收完一个字节RI置1进入Recieve中断 { rtemp=SBUF; //保存所读取的数据 RI=0; //RI清0以等待下次发送 // set flag for polling in main loop //rflag--1 已接收到AA，2--命令字节已接收到 if (rflag==1) { rbuf[rpoint]=rtemp; if (rpoint<RCOUNT) { rpoint++; } } if (rtemp==0xaa) { rpoint=0; rflag=1; } } //======================================================================= //串口发送 void sendm(unsigned char sl) { EA=0;//dellete????????????????????????????duplex for(spoint=0;spoint<sl;spoint++) // send string { // clear transmit interrupt flag SBUF=ssbuf[spoint]; //start sending one byte while (!TI); TI=0; // wait until sent } EA=1; } //======================================================================= //串口初始化 void UART_init(void) { SCON =0x50; //SCON: serail mode 1, 8-bit UART, enable ucvr SSTAT=0x60; // separate Rx / Tx interrupts BRGR0=0xF0; // setup BRG for 9600 baud @ 7.373MHz internal RC oscillator BRGR1=0x02; BRGCON = 0x03; // enable BRG //header of sending string rpoint=0; spoint=0; rbuf[RCOUNT]=0; ssbuf[SCOUNT]=0; ssbuf[0]=0xaa; rflag=0; ESR=1; //ESR=Enable Serial Recieve EST=1; //EST=Enable Serial Transmit // EA=1; //使能中断 } //+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ //+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ void initio(void) { P0M1 = 0x00; P0M2 = 0x00;//P0 P1M1 = 0x2c; P1M2 = 0x0c; //P1.2 P1.3 0C OUTPUT P2M1 = 0x00; P2M2 = 0x00; DataLow; ClkDown; LEDown; KB=1; LED1=1; LED2=1; } /***********************************/ /* 间接访问方式的驱动函数 */ /***********************************/ /* 直接驱动函数由4个子程序组成： 1.读BF和AC值函数WaitForEnable 2.写指令代码函数LcdWriteCommand 3.写显示数据函数LcdWriteData 4.读显示数据函数LcdReadData */ /*---------读BF和AC值函数---------*/ /* ======================================================= 正常读写操作之前必须检测LCD控制器状态: CS=1 RS=0 RW=1 DB7: 0 LCD控制器空闲; 1 LCD控制器忙 ======================================================== */ void WaitForEnable( void ) { DataPort = 0xff; RS =0;RW = 1; Elcm = 1; /* 判BF=0? */ _nop_(); while( DataPort & Busy ); Elcm = 0; //ACC=P1; while(ACC_7==1); com=cradd; } /* ======================================================= 写控制字符子程序: E=1 RS=0 RW=0 ======================================================= */ /*-----------写指令函数-----------*/ void LcdWriteCommand( void ) { WaitForEnable(); // 检测忙信号? RS = 0;RW = 0; DataPort = com; // 送控制字子程序 _nop_(); Elcm = 1; _nop_(); _nop_(); Elcm = 0; // 操作允许脉冲信号 } /* ======================================================= 当前位置写字符子程序: E =1 RS=1 RW=0 ======================================================= */ /*-----------写数据函数-----------*/ //void LcdWriteData( char dataW ) { void LcdWriteData( void ) { WaitForEnable(); // 检测忙信号 RS = 1;RW = 0; DataPort = dat; _nop_(); Elcm = 1; _nop_(); _nop_(); Elcm = 0; // 操作允许脉冲信号 } /* ======================================================= initialization of LCD ======================================================= */ void initLCD(void) { unsigned char i,j; for(j=0;j<3;j++) { RS=0; RW=0; DataPort=Work_M; Elcm=1; _nop_(); Elcm=0; for(i=0;i<180;i++); Elcm=1; _nop_(); Elcm=0; } com=Work_M; LcdWriteCommand(); com=Screen_Off; LcdWriteCommand(); com=Cls; LcdWriteCommand(); com=Input_M; LcdWriteCommand(); com=Disp_M; LcdWriteCommand(); } /* ======================================================= disp the string ======================================================= */ void Dispall(void) { uchar i; com = Ddram_Al1; LcdWriteCommand(); for (i=0;i<16;i++) { dat=dispc[0][i]; LcdWriteData(); // 写字符 } com = Ddram_Al2; LcdWriteCommand(); for (i=0;i<16;i++) { dat=dispc[1][i]; LcdWriteData(); } } ////// void Dispall1(void) { uchar i; com = Ddram_Al1; LcdWriteCommand(); for (i=0;i<16;i++) { dat=low[0][i]; LcdWriteData(); // 写字符 } com = Ddram_Al2; LcdWriteCommand(); for (i=0;i<16;i++) { dat=low[1][i]; LcdWriteData(); } } //============================================================================================== /**************************************************************** ;说明CPU配置WDTE=1WDSE=0 ;***************************************************************/ void init_wdt() { ACC = WDCON; //读取WDT控制寄存器 ACC = ACC|0xc5; //置位ACC.2准备启动WDT PRE2PRE1PRE0=110_D765 WDCLK_D0当该位为1时选择看门狗振荡器作为时钟源 WDL = 0xff; //设置8位倒计时器初值 c5/1.31s e5/2.62s WDCON = ACC; //启动WDT WFEED1 = 0xA5; //清零第一部分 WFEED2 = 0x5A; //清零第二部分 } /***************************** ;喂狗子程序 ;注意程序中开启中断 *****************************/ void clrwdt() { EA = 0; //关闭中断 WFEED1 = 0xA5; //执行清零第一部分 WFEED2 = 0x5A; //执行清零第二部分 EA = 1; //开中断 } //***********