原创 Microblaze_12864

#include "xparameters.h"

#include "stdio.h"

#include "xutil.h"

#include "xbasic_types.h"

#include "xstatus.h"

#include "xgpio.h"

#define CHANNEL 1

XGpio Lcd_Data,Lcd_Ctr;

Xuint8 table[]="timthorpe";

unsigned char number[]="0123456789";

/*******************************************************************/

/*延时time us*/

void delay(Xuint16 time)

{

  Xuint16
i,j;

 
for(i=0;i<time;i++)

  
for(j=0;j<26;j++);

}

void delay_ms(Xuint16 time)

{

  Xuint16
i,j;

 
for(i=0;i<time;i++)

  
for(j=0;j<3785;j++);

}

/*短延时time */

void delay_s(time)

{ Xuint8 i;

 for(i=0;i<time;i++);

}

/*******************************************************************/

/*液?2864进行操作的一系列子函数 没什么可说的 按照时序图写褪橇?

/*******************************************************************/

Xint8 lcd_busy()

 {                         

     
Xuint16 nTimeOut=0;

 
XGpio_DiscreteClear(&Lcd_Ctr,CHANNEL,0x1);

   
XGpio_DiscreteSet(&Lcd_Ctr,CHANNEL,0x2);

   
XGpio_DiscreteSet(&Lcd_Ctr,CHANNEL,0x4);

   
delay(3);

     XGpio_SetDataDirection(&Lcd_Data,CHANNEL,0xffffffff);

     while((XGpio_DiscreteRead(&Lcd_Data,CHANNEL)&0x80));

     XGpio_DiscreteClear(&Lcd_Ctr,CHANNEL,0x4);

      delay(1);

    //
xil_printf("the value of result is %x\r\n",result);

 }

/*******************************************************************/

/*                                                                
*/

/*写指令数据到LCD                                                  */

/*RS=L，RW=L，E=高脉冲，D0-D7=指令码。                             */

/*******************************************************************/

void lcd_wcmd(Xuint8 cmd)

{                         

    
lcd_busy();

   //
delay_ms(20);

  
//delay(1);

   
XGpio_DiscreteClear(&Lcd_Ctr,CHANNEL,0x1);

   
//delay(1);

   
XGpio_DiscreteClear(&Lcd_Ctr,CHANNEL,0x2);

     //delay(1);

     XGpio_DiscreteClear(&Lcd_Ctr,CHANNEL,0x4);

   
//delay(1);

   //
XGpio_SetDataDirection(&Lcd_Data,CHANNEL,0x0);

   
XGpio_DiscreteWrite(&Lcd_Data,CHANNEL,cmd);

   
delay_ms(5);

   
XGpio_DiscreteSet(&Lcd_Ctr,CHANNEL,0x4);

   
delay_ms(5);

   
XGpio_DiscreteClear(&Lcd_Ctr,CHANNEL,0x4); 

     delay(1);

     XGpio_DiscreteSet(&Lcd_Ctr,CHANNEL,0x2);

    //
delay(1);

    XGpio_DiscreteClear(&Lcd_Ctr,CHANNEL,0x1); 

     //delay(1);

   
xil_printf("command %x\r\n",cmd);

}

/*******************************************************************/

/*                                                                
*/

/*写显示数据到LCD                                                 
*/

/*RS=H，RW=L，E=高脉冲，D0-D7=数据。                               */

/*                                                                
*/

/*******************************************************************/

void lcd_wdat(Xuint8 dat)

{                         

  
lcd_busy();

  /*
delay_ms(20);

    //delay(1);

   
XGpio_DiscreteSet(&Lcd_Ctr,CHANNEL,0x1);

   
XGpio_DiscreteClear(&Lcd_Ctr,CHANNEL,0x2);

    XGpio_DiscreteClear(&Lcd_Ctr,CHANNEL,0x4);

    //delay(100);

    
//delay(1);

     
XGpio_DiscreteWrite(&Lcd_Data,CHANNEL,dat);

      delay(5);

      XGpio_DiscreteSet(&Lcd_Ctr,CHANNEL,0x4);

      delay(5);

    //  XGpio_SetDataDirection(&Lcd_Data,CHANNEL,0x0);

   
XGpio_DiscreteClear(&Lcd_Ctr,CHANNEL,0x4);

    //
delay(1);

    //XGpio_DiscreteSet(&Lcd_Ctr,CHANNEL,0x2);

    //
delay(1);

    //XGpio_DiscreteClear(&Lcd_Ctr,CHANNEL,0x1); 

    //
delay(1);

  
xil_printf("data %x\r\n",dat);

    delay_ms(1);*/

     // 
delay_ms(20);

  
//delay(1);

   
XGpio_DiscreteSet(&Lcd_Ctr,CHANNEL,0x1);

   
//delay(1);

   
XGpio_DiscreteClear(&Lcd_Ctr,CHANNEL,0x2);

     //delay(1);

     XGpio_DiscreteClear(&Lcd_Ctr,CHANNEL,0x4);

   
//delay(1);

   //
XGpio_SetDataDirection(&Lcd_Data,CHANNEL,0x0);

   
XGpio_DiscreteWrite(&Lcd_Data,CHANNEL,dat);

   
delay_ms(5);

   
XGpio_DiscreteSet(&Lcd_Ctr,CHANNEL,0x4);

   
delay_ms(5);

   
XGpio_DiscreteClear(&Lcd_Ctr,CHANNEL,0x4); 

     delay(1);

     XGpio_DiscreteSet(&Lcd_Ctr,CHANNEL,0x2);

    //
delay(1);

    XGpio_DiscreteClear(&Lcd_Ctr,CHANNEL,0x1); 

     //delay(1);

   
xil_printf("data %x\r\n",dat);

 }

/******************************************************************

设置在液晶中显疚?

********************************************************************/

void lcd_pos(Xuint8 x,Xuint8 y)

{                         

  
Xuint8  pos;

   if (x==0)

    
{x=0x80;}

   else if
(x==1)

    
{x=0x90;}

   else if
(x==2)

    
{x=0x88;}

   else if
(x==3)

     {x=0x98;}

   pos =
x+y; 

  
lcd_wcmd(pos);     //显示地址

}

/*******************************************************************

在液晶中输出一串字?

********************************************************************

*/

void print_string(Xuint8 x,Xuint8 y,Xuint8 * str)

{

Xuint8 lcd_temp;

lcd_pos(x,y);

lcd_temp=*str;

while(lcd_temp != '\0')

{

lcd_wdat(lcd_temp);

lcd_temp=*(++str);

}

}

/*******************************************************************/

/*                                                                
*/

/*  LCD初始化设定                                                 
*/

/*                                                                
*/

/*******************************************************************/

void lcd_init()

{   
delay_ms(50);

   
lcd_wcmd(0x30);      //基本指令

   
delay(1500);

   
lcd_wcmd(0x30);      //基本指令操作

   
delay(400);

      lcd_wcmd(0x0F);      //显示开，关?

    delay(1500);

   
lcd_wcmd(0x01);      //清除LCD的允灸谌?

   
delay_ms(15);

     xil_printf("lcd initialization
done!\n\r");

}

//********************************************上述为对液晶的操作

int main(void){

   Xuint8
result;

 
xil_printf("now begin\r\n");

 XGpio_Initialize(&Lcd_Data,XPAR_LCD_DATA_DEVICE_ID);

 XGpio_SetDataDirection(&Lcd_Data,CHANNEL,0x0);

 //XGpio_SetDataDirection(&Lcd_Data,CHANNEL,0x0);

 XGpio_Initialize(&Lcd_Ctr,XPAR_LCD_CTR_DEVICE_ID);

 XGpio_SetDataDirection(&Lcd_Ctr,CHANNEL,0x0);

 lcd_init();

 
lcd_pos(1,3);

 
lcd_wdat(0x35);

 
/*delay_ms(10000);

 
lcd_wcmd(0x87);

 
lcd_wdat(0x2F);

 
delay_ms(10000);

 
print_string(2,0,number);

 
delay_ms(10000);

 
lcd_wcmd(0x01);*/

   while(1);

 return 0;

 }