基于单片机淬火炉温温度控制课程设计(5)

}

RELAY=0; P3=out; delay(100); RELAY=1;

void key(void ) {

if(KS0==0) delay_ms(1); if(KS0==0) SET_TEMP++; while(!KS0); if(KS1==0) delay_ms(1); if(KS1==0) SET_TEMP--; while(!KS1);

display_onechar(0,9,SET_TEMP/100+'0'); display_onechar(0,10,(SET_TEMP0)/10+'0'); display_onechar(0,11,SET_TEMP+'0'); } main() {

lcd_init();

display_string(0,0,LcdBuf1); display_string(1,0,LcdBuf2); Write_CGRAM(LcdBuf);

//向CGRAM写入自定义的摄氏度符号

display_onechar(0,12,0); //显示自定义的摄氏度符号

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display_onechar(0,13,1); //显示自定义的摄氏度符号 display_onechar(1,12,0); display_onechar(1,13,1); while(1) {

key(); ADC();

constant_temperature(); display_string(1,9,a); pid();

dac0832(sumout); delay_ms(100);

}

}

附录2 LCD程序

#ifndef LCD_1602_ #define LCD_1602_ #include #include sbit LCD_RS = P2 ^ 0; sbit LCD_RW = P2 ^ 1; sbit LCD_E = P2 ^ 2; #define LCD_DATA P0

unsigned char code LcdBuf[]= {

//自定义汉字 22

5X7;最大能存储64个字节

0x0c,0x12,0x12,0x0c,0x00,0x00,0x00,0x00, 0x0f,0x10,0x10,0x10,0x10,0x10,0x0f,0x00, };

void delay(unsigned int ms) { }

bit lcd_busy()

{ // 测试LCD忙碌状态 bit result; LCD_RS = 0; LCD_RW = 1; LCD_E = 1; _nop_(); _nop_(); _nop_(); _nop_();

result =(LCD_DATA & 0x80); LCD_E = 0; return result; }

unsigned char y; for(;ms>0;ms--)

for(y=120;y>0;y--);

void WriteCommand(unsigned char wdata) {

while(lcd_busy()); LCD_DATA=wdata; LCD_RS=0;

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LCD_RW=0; LCD_E=1; LCD_E=0; delay(5); LCD_E=1; }

void WriteData(unsigned char wdata) {

while(lcd_busy()); LCD_DATA=wdata; LCD_RS=1; LCD_RW=0; LCD_E=1; LCD_E=0; delay(5); LCD_E=1; }

void lcd_init(void) {

WriteCommand(0x38); WriteCommand(0x38);

WriteCommand(0x38);

delay(5);

WriteCommand(0x08); WriteCommand(0x01); WriteCommand(0x06); WriteCommand(0x0c); }

void set_xy(unsigned char x,unsigned

char y)

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{

switch (x) {

case 0: y+=0x80; break;

case 1: y+=0xc0; break;

}

WriteCommand(y); }

void display_onechar(unsigned char x,unsigned char y,unsigned char wdate) {

set_xy(x,y); WriteData(wdate); }

void display_string(unsigned char x,unsigned char y,unsigned char *s) {

set_xy(x,y); while(*s) {

WriteData(*s); s++; } }

/******************************************************************/ void Write_CGRAM(unsigned char *p) {

unsigned char i,j,kk;

unsigned char tmp=0x40; //操作CGRAM的命令码 kk=0;

for(j=0;j<2;j++) //64 字节存储空间,可以生成 8 个自定义字符点阵 64X8

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