原创 MicroBlaze 驱动器12864 v0.0

#include "xparameters.h"

#include "stdio.h"

#include "xutil.h"

#include "xbasic_types.h"

#include "xstatus.h"

#include "xgpio.h"

#define CHANNEL 1

#define SET_RS  
XGpio_DiscreteClear(&Lcd_Ctr,CHANNEL,0x1)

#define CLEAR_RS
XGpio_DiscreteClear(&Lcd_Ctr,CHANNEL,0x1)

#define SET_RW   XGpio_DiscreteSet(&Lcd_Ctr,CHANNEL,0x2)

#define CLEAR_RW
XGpio_DiscreteClear(&Lcd_Ctr,CHANNEL,0x2)

#define SET_EN   XGpio_DiscreteSet(&Lcd_Ctr,CHANNEL,0x8)

#define CLEAR_EN XGpio_DiscreteClear(&Lcd_Ctr,CHANNEL,0x8)

#define SET_PORT_IN 
XGpio_SetDataDirection(&Lcd_Data,CHANNEL,0xffffffff)

#define SET_PORT_OUT
XGpio_SetDataDirection(&Lcd_Data,CHANNEL,0x00000000)

unsigned char
dis[]={"123456"};

XGpio Lcd_Data,Lcd_Ctr;

/*延时time us*/

void delay_us(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++);

 }

/*对液晶12864进行操作的一系列子函数 没什么可说的 按照时序图写就是了

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

/*                                                                
*/

/*检查LCD忙状态                                                   
*/

/*lcd_busy为1时，忙，等待。lcd-busy为0时,闲，可写指令与数据。      */

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

/*                                                                
*/

/*写指令数据到LCD                                                 
*/

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

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

Xint8 lcd_busy()

 {                         

 
Xuint8 result;

   
SET_PORT_IN;

     CLEAR_EN;

   
CLEAR_RS;

     SET_RW;

     delay_us(2);

     SET_EN;

   
delay_us(2);

     result=XGpio_DiscreteRead
(&Lcd_Data,CHANNEL);

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

   
CLEAR_EN;

     result=result&0x80;

     SET_PORT_OUT;

   
return result;

 }

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

void lcd_wcmd(Xuint8 cmd)

{                         

  
while(lcd_busy());

  
//  delay(50);

  
CLEAR_EN;

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

   
//asm("nop");

 
CLEAR_RW;// 
XGpio_DiscreteClear(&Lcd_Ctr,CHANNEL,0x2);

  
// asm("nop");

   
//XGpio_DiscreteClear(&Lcd_Ctr,CHANNEL,0x8);

   
delay_us(2);

   
SET_EN;

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

   
XGpio_DiscreteWrite(&Lcd_Data,CHANNEL,cmd);

   
delay_us(2);

   
CLEAR_EN;//XGpio_DiscreteSet(&Lcd_Ctr,CHANNEL,0x8);

   
//delay(2);

   
//XGpio_DiscreteClear(&Lcd_Ctr,CHANNEL,0x8); 

  
xil_printf("cmd done: %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)

{                         

 
while(lcd_busy());

 
//  delay(50);

  
CLEAR_EN;

    SET_RS;

    CLEAR_RW;

    delay_us(2);

    SET_EN;

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

    
//asm("nop");

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

    
// asm("nop");

   
//XGpio_DiscreteClear(&Lcd_Ctr,CHANNEL,0x8);

  
//  delay(2);

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

   
XGpio_DiscreteWrite(&Lcd_Data,CHANNEL,dat);

  
// XGpio_DiscreteSet(&Lcd_Ctr,CHANNEL,0x8);

   
delay_us(2);

   
//XGpio_DiscreteClear(&Lcd_Ctr,CHANNEL,0x8);

    
CLEAR_EN;

   
xil_printf("data done: %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符

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

*/

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

{

Xuint8 lcd_temp;

lcd_pos(x,y);

lcd_temp=*str;

while(lcd_temp != 0x00)

{

lcd_wdat(lcd_temp);

lcd_temp=*(++str);

}

}

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

/*                                                                
*/

/* 
LCD初始化设定                                                 
*/

/*                                                                
*/

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

void lcd_init()

{   
delay_ms(40);

   
lcd_wcmd(0x30);      //扩充指令操作

   
delay_ms(5);

   
lcd_wcmd(0x30);      //基本指令操作

   
delay_ms(5);

   
lcd_wcmd(0x0f);      //显示开，关?

   
delay_ms(5);

   
lcd_wcmd(0x01);      //清除LCD的允灸谌?

    delay_ms(10);

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

}

 void MicroBlaze_Initialize(){

 XGpio_Initialize(&Lcd_Data,XPAR_LCD_DATA_DEVICE_ID);

 XGpio_SetDataDirection(&Lcd_Data,CHANNEL,0x0);

 XGpio_Initialize(&Lcd_Ctr,XPAR_LCD_CTR_DEVICE_ID);

 XGpio_SetDataDirection(&Lcd_Ctr,CHANNEL,0x0);

 
}

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

int main(void){

 
unsigned char i=0;

 
xil_printf("now begin\r\n");

 
MicroBlaze_Initialize();

 lcd_init();

 
lcd_pos(1,1);

 
while(dis!='0')