液晶显示程序1.doc

1.txt.Agtn/*FYD12864-0402B*/#include #define uchar unsigned char#define uint unsigned int/uchar data CMD;/uchar data DATA;uchar idata busy,Line,Col;sbit RS= P20;sbit RW= P21;sbit E= P17;sbit LCD_LIGHT= P27;sbit LCD_RST= P26;code char STR1= ;code char STR2= ;code char STR3= ;code char STR4= SCCDCYB;void Read_Busy();void Delay100us(volatile uint n);void Clear_LCD();void Write_Single_CMD(uchar cmd);void Write_Single_Data(uchar a);void Init_LCD();void Display(uchar *ptr,uchar ddram) ;void Init_IO(void);void Reset_St7920(void);void DispSetCursor(uchar LineNum,uchar ColumnNum);void main(void) uchar i,j; Init_IO(); Reset_St7920();/ LCD_LIGHT=1; Clear_LCD(); Init_LCD(); Write_Single_CMD(0X01); Display(STR1,0X80); Display(STR2,0X90); Display(STR3,0X88); Display(STR4,0X98); Delay100us(200); Write_Single_CMD(0x80); j=0; for (i=0;i32;i+) Write_Single_Data(0xb4); Write_Single_Data(0xde+j);/ Write_Single_CMD(0x01); /0x9C j+; / Write_Single_CMD(0x01); /0x9C Write_Single_CMD(0x01); /0x9C Write_Single_CMD(0x34); /0x9C Write_Single_CMD(0x36); /0x9C for (i=0;i32;i+) Write_Single_CMD(0x80+i); Write_Single_CMD(0x80);/ Write_Single_CMD(0x01); /0x9C for (j=0;j8;j+) Write_Single_Data(0x00); Write_Single_Data(0x00); for (i=0;i32;i+) Write_Single_CMD(0x80+i); Write_Single_CMD(0x88);/ Write_Single_CMD(0x01); /0x9C for (j=0;j8;j+) Write_Single_Data(0x00); Write_Single_Data(0x00); for (i=0;i32;i+) Write_Single_CMD(0x80+i); Write_Single_CMD(0x80);/ Write_Single_CMD(0x01); /0x9C for (j=0;j8;j+) Write_Single_Data(0xFF); Write_Single_Data(0xFF); for (i=0;i32;i+) Write_Single_CMD(0x80+i); Write_Single_CMD(0x88);/ Write_Single_CMD(0x01); /0x9C for (j=0;j8;j+) Write_Single_Data(0xFF); Write_Single_Data(0xFF); / DispSetCursor(1,3);/ for (i=0;i64;i+)/ / for (j=0;j0x7f); void Reset_St7920(void) LCD_RST=0; Delay100us(100); LCD_RST=1; Delay100us(200);void Delay100us(volatile uint n) uchar i; while(n-) for(i=0;i4)return; if(WhichLine=0)return; Write_Single_CMD(WhichLine-1)|0x04); void Display(uchar *ptr,uchar ddram) uchar i,l,x; l=0; if(ddram0x88) Line=0; /: else if(ddram0xA0) Line=2; /: else if(ddram0x07) Col=Co