LCD的靜態顯示
2019-11-08 03:26:35
供稿：網友
/*----------------------------------------------- 名稱：LCD1602 內容：通過標準程序靜態顯示字符 引腳定義如下：1-VSS 2-VDD 3-V0 4-RS 5-R/W 6-E 7-14 DB0-DB7 15-BLA 16-BLK------------------------------------------------*/#include<reg52.h> //包含頭文件，一般情況不需要改動，頭文件包含特殊功能寄存器的定義#include<intrins.h>sbit RS = P2^4; //定義端口 sbit RW = P2^5;sbit EN = P2^6;#define RS_CLR RS=0 #define RS_SET RS=1#define RW_CLR RW=0 #define RW_SET RW=1 #define EN_CLR EN=0#define EN_SET EN=1#define DataPort P0/*------------------------------------------------ uS延時函數，含有輸入參數 unsigned char t，無返回值 unsigned char 是定義無符號字符變量，其值的范圍是 0~255 這里使用晶振12M，精確延時請使用匯編,大致延時 長度如下 T=tx2+5 uS ------------------------------------------------*/void DelayUs2x(unsigned char t){ while(--t);}/*------------------------------------------------ mS延時函數，含有輸入參數 unsigned char t，無返回值 unsigned char 是定義無符號字符變量，其值的范圍是 0~255 這里使用晶振12M，精確延時請使用匯編------------------------------------------------*/void DelayMs(unsigned char t){ while(t--) { //大致延時1mS DelayUs2x(245); DelayUs2x(245); }}/*------------------------------------------------ 判忙函數------------------------------------------------*/ bit LCD_Check_Busy(void) { DataPort= 0xFF; RS_CLR; RW_SET; EN_CLR; _nop_(); EN_SET; return (bit)(DataPort & 0x80); }/*------------------------------------------------ 寫入命令函數------------------------------------------------*/ void LCD_Write_Com(unsigned char com) { // while(LCD_Check_Busy()); //忙則等待 DelayMs(5); RS_CLR; RW_CLR; EN_SET; DataPort= com; _nop_(); EN_CLR; }/*------------------------------------------------ 寫入數據函數------------------------------------------------*/ void LCD_Write_Data(unsigned char Data) { //while(LCD_Check_Busy()); //忙則等待 DelayMs(5); RS_SET; RW_CLR; EN_SET; DataPort= Data; _nop_(); EN_CLR; }/*------------------------------------------------ 清屏函數------------------------------------------------*/ void LCD_Clear(void) { LCD_Write_Com(0x01); DelayMs(5); }/*------------------------------------------------ 寫入字符串函數------------------------------------------------*/ void LCD_Write_String(unsigned char x,unsigned char y,unsigned char *s) { if (y == 0) { LCD_Write_Com(0x80 + x); //表示第一行 } else { LCD_Write_Com(0xC0 + x); //表示第二行 } while (*s) { LCD_Write_Data( *s); s ++; } }/*------------------------------------------------ 寫入字符函數------------------------------------------------*/ void LCD_Write_Char(unsigned char x,unsigned char y,unsigned char Data) { if (y == 0) { LCD_Write_Com(0x80 + x); } else { LCD_Write_Com(0xC0 + x); } LCD_Write_Data( Data); }/*------------------------------------------------ 初始化函數------------------------------------------------*/ void LCD_Init(void) { LCD_Write_Com(0x38); /*顯示模式設置*/ DelayMs(5); LCD_Write_Com(0x38); DelayMs(5); LCD_Write_Com(0x38); DelayMs(5); LCD_Write_Com(0x38); LCD_Write_Com(0x08); /*顯示關閉*/ LCD_Write_Com(0x01); /*顯示清屏*/ LCD_Write_Com(0x06); /*顯示光標移動設置*/ DelayMs(5); LCD_Write_Com(0x0C); /*顯示開及光標設置*/ }/*------------------------------------------------ 主函數------------------------------------------------*/ void main(void) { LCD_Init(); LCD_Clear();//清屏while (1) { LCD_Write_String(1,0,"0x32"); LCD_Write_String(1,1,"Archer")； while(1); }}
