基于Proteus的 TTL芯片识别与测试系统仿真设计

#include <reg51.h> #include <stdio.h> #include "lcd2004_4Bit.h" sbit RS = P0 ^ 0; sbit EN = P0 ^ 1; sbit D4 = P0 ^ 4; sbit D5 = P0 ^ 5; sbit D6 = P0 ^ 6; sbit D7 = P0 ^ 7; void Lcd_Delay(int a) { int j; int i; for(i = 0; i < a; i++) { for(j = 0; j < 100; j++) { } } } //LCD 4 Bit Interfacing Functions void lcd2004Port(char a) { if(a & 1) D4 = 1; else D4 = 0; if(a & 2) D5 = 1; else D5 = 0; if(a & 4) D6 = 1; else D6 = 0; if(a & 8) D7 = 1; else D7 = 0; } void lcd2004Cmd(char a) { RS = 0; // => RS = 0 lcd2004Port(a); EN = 1; // => E = 1 Lcd_Delay(5); EN = 0; // => E = 0 } void lcd2004Clear() { lcd2004Cmd(0); lcd2004Cmd(1); } void lcd2004SetCursor(char col, char row) { char temp, z, y; if(row == 0) { temp = 0x80 + col; z = temp >> 4; y = temp & 0x0F; lcd2004Cmd(z); lcd2004Cmd(y); } else if(row == 1) { temp = 0xC0 + col; z = temp >> 4; y = temp & 0x0F; lcd2004Cmd(z); lcd2004Cmd(y); } else if(row == 2) { temp = 0x80 + 0x14 + col; z = temp >> 4; y = temp & 0x0F; lcd2004Cmd(z); lcd2004Cmd(y); } else if(row == 3) { temp = 0xC0 + 0x14 + col; z = temp >> 4; y = temp & 0x0F; lcd2004Cmd(z); lcd2004Cmd(y); } } void lcd2004Init() { lcd2004Port(0x00); Lcd_Delay(200); ///////////// Reset process from datasheet ///////// lcd2004Cmd(0x03); Lcd_Delay(50); lcd2004Cmd(0x03); Lcd_Delay(110); lcd2004Cmd(0x03); ///////////////////////////////////////////////////// lcd2004Cmd(0x02); lcd2004Cmd(0x02); lcd2004Cmd(0x08); //4 bits, 2 lines, 5*7 lcd2004Cmd(0x00); //do nothing lcd2004Cmd(0x0C); //display on, no cursor, no blink lcd2004Cmd(0x00); //do nothing lcd2004Cmd(0x06); // Increment cursor on write, No shift of display on writ } void lcd2004WriteChr(char a) { char temp, y; temp = a & 0x0F; y = a & 0xF0; RS = 1; // => RS = 1 lcd2004Port(y >> 4); //Data transfer EN = 1; Lcd_Delay(5); EN = 0; lcd2004Port(temp); EN = 1; Lcd_Delay(5); EN = 0; } void lcd2004WriteStr(char *a) { int i; for(i = 0; a[i] != '\0'; i++) lcd2004WriteChr(a[i]); } void lcd2004WriteDec(int num) { char buff[10]; sprintf(buff, "%d", num); lcd2004WriteStr(buff); } void lcd2004WriteHex(unsigned int hexNum) { char buff[10]; sprintf(buff, "%X", hexNum); lcd2004WriteStr(buff); } void lcd2004WriteFloat(float floatNum) { char buff[10]; sprintf(buff, "%2.2f", floatNum); lcd2004WriteStr(buff); } /* void lcd2004ShiftLeft() { lcd2004Cmd(0x01); lcd2004Cmd(0x08); } void lcd2004ShiftRight() { lcd2004Cmd(0x01); lcd2004Cmd(0x0C); } */ void lcd2004ClearRight(unsigned char col, unsigned char row) { unsigned char i; lcd2004SetCursor(col, row); for(i = col; i < 20; i++) lcd2004WriteChr(0x20); } void lcd2004ClearMid(unsigned char col1, unsigned char col2, unsigned char row) { unsigned char i; lcd2004SetCursor(col1, row); for(i = col1; i < col2; i++) lcd2004WriteChr(0x20); } //End LCD 4 Bit Interfacing Functions