#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

for(j=0;j<26;j++);

}

void delay_ms(Xuint16 time)

{

Xuint16 i,j;

for(i=0;i

for(j=0;j<3785;j++);

}

/*短延时time */

void delay_s(time)

{ Xuint8 i;

for(i=0;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;

}