简易自动电阻测试仪(3)

：主程序流程图

10

附录 2

附录 3：部分源程序

#define Disp_On 0x3f #define Disp_Off 0x3e #define Col_Addr 0x40 #define Page_Addr 0xb8 #define Start_Line 0xc0 #define Lcd_delay 0x3

#define Lcd_Bus PORTA //MCU P1<------> LCM #define HN 00 const unsigned char *hanzk;

void find_char_num(unsigned char hanchar);

void disp_menu(unsigned char page,unsigned char list); void disp_second_menu(unsigned char key_enter); ///Lcd lm12864 显示程序 //////////////////////////////// ////////lcd口线设置/////////////// void Set_lcd_cs2(void) {

unsigned char i; PORTC|=BIT(6); for(i=Lcd_delay;i>0;i--); // Delay(1); }

void Cls_lcd_cs2(void) {

unsigned char i; PORTC&=~BIT(6); for(i=Lcd_delay;i>0;i--); // Delay(1); }

void Set_lcd_cs1(void)

11

{

unsigned char i; PORTC|=BIT(5); for(i=Lcd_delay;i>0;i--); // Delay(1); }

void Cls_lcd_cs1(void) {

unsigned char i; PORTC&=~BIT(5); for(i=Lcd_delay;i>0;i--); // Delay(1);

}

void Set_lcd_rs(void) {

unsigned char i; PORTC|=BIT(2); for(i=Lcd_delay;i>0;i--); // Delay(1); }

void Cls_lcd_rs(void) {

unsigned char i; PORTC&=~BIT(2); for(i=Lcd_delay;i>0;i--); // Delay(1);

}

void Set_lcd_rw(void) {

unsigned char i; PORTC|=BIT(3); for(i=Lcd_delay;i>0;i--); // Delay(1);

}

12

void Cls_lcd_rw(void) {

unsigned char i; PORTC&=~BIT(3); for(i=Lcd_delay;i>0;i--); // Delay(1);

}

void Set_lcd_e(void) {

unsigned char i; PORTC|=BIT(4); for(i=Lcd_delay;i>0;i--); // Delay(1);

}

void Cls_lcd_e(void) {

unsigned char i; PORTC&=~BIT(4); for(i=Lcd_delay;i>0;i--); // Delay(1);

}

//写命令字

void Wr_lcd_cmd(unsigned char cmddata) {

unsigned char i; Cls_lcd_rs(); Cls_lcd_rw(); PORTA=cmddata; Set_lcd_e(); Cls_lcd_e();

13

// for(i=Lcd_delay;i>0;i--); } //写数据

void Wr_lcd_data(unsigned char lcddata) {

unsigned char i; Set_lcd_rs(); Cls_lcd_rw(); PORTA=lcddata; Set_lcd_e(); Cls_lcd_e();

// for(i=Lcd_delay;i>0;i--); }

//读lcd数据

unsigned char Rd_lcd_data(void) {

unsigned char rdlcddata,i; //Cls_lcd_rs();

PORTA=0xff; DDRA=0x00; Cls_lcd_e();

// for(i=200;i>0;i--); Set_lcd_rs(); Set_lcd_rw();

// for(i=200;i>0;i--);

14

百度搜索“77cn”或“免费范文网”即可找到本站免费阅读全部范文。收藏本站方便下次阅读，免费范文网，提供经典小说教育文库简易自动电阻测试仪(3)在线全文阅读。