用流明公司LM3S系列芯片的驱动库编写LCD12864M显示的程序

wuji4115

用流明公司LM3S系列芯片的驱动库编写LCD12864M显示的程序 [复制链接]

原理图

wuji4115

#include  "systemInit.h"
#define uchar unsigned char
#define uint unsigned int
#define lcd_port  GPIO_PORTA_BASE                                //LCD¹¤×÷ģʽÉèÖÿÚ
#define lcd_data  GPIO_PORTC_BASE                                 //Êý¾Ý¿Ú
#define lcd_rs    GPIO_PIN_5                                                 
#define lcd_rw   GPIO_PIN_4                                                 
#define lcd_en   GPIO_PIN_3
void delay(uint xms)
{
uint i,j;
for(j=0;i   for(i=0;i<110;i++);
}
unsigned char lcd_busy()
{
    unsigned char result;
    GPIOPinWrite(lcd_port,lcd_rs,0x00);                                 //rs=0
        GPIOPinWrite(lcd_port,lcd_rw,0xFF);                                 //rw=1
        GPIOPinWrite(lcd_port,lcd_en,0xFF);                             //en=1
        GPIOPinTypeGPIOInput(lcd_data,0xFF);                         //Êý¾Ý¿ÚÉèÖóÉÊä
    result=(GPIOPinRead(lcd_data,0x80)&0x80);
    GPIOPinWrite(lcd_port,lcd_en,0x00);
    return result;
}
void lcd_write_cmd(uchar com)
{
while(lcd_busy());
GPIOPinWrite(lcd_port,lcd_rs,0x00);
GPIOPinWrite(lcd_port,lcd_rw,0x00);          
GPIOPinWrite(lcd_port,lcd_en,0x00);
GPIOPinWrite(lcd_data,0xFF,com);
delay(5);
GPIOPinWrite(lcd_port,lcd_en,0xFF);
delay(5);
GPIOPinWrite(lcd_port,lcd_en,0x00);
}
void lcd_write_dat(uchar date)
{
while(lcd_busy());
GPIOPinWrite(lcd_port,lcd_rs,0xFF);
GPIOPinWrite(lcd_port,lcd_rw,0x00);          
GPIOPinWrite(lcd_port,lcd_en,0x00);
GPIOPinWrite(lcd_data,0xFF,date);
delay(5);
GPIOPinWrite(lcd_port,lcd_en,0xFF);
delay(5);
GPIOPinWrite(lcd_port,lcd_en,0x00);
}
void lcd_write_string(uchar *str)
{
while(*str!='\0')  //δ½áÊø
{
  lcd_write_dat(*str++);
  delay(5);
}
}
void lcd_pos(uchar x,uchar y)  //´ÓµÚXÐеĵÚYλÖÿªÊ¼ÏÔʾ
{
uchar pos;
if(x==1)        //µÚÒ»ÐÐ
{ x=0x80;}
else if(x==2)  //µÚ¶þÐÐ
{ x=0x90;}
else if(x==3)  //µÚÈýÐÐ
{ x=0x88;}
else if(x==4)  //µÚËÄÐÐ
{ x=0x98;}
pos=x+y-1;     //Ê×µØַΪ0X80
lcd_write_cmd(pos);
}
void lcd_init()
{
//LCD_PSB=1;  //²¢Ðз½Ê½
//LCD_RST=1;  //²»¸´Î»
lcd_write_cmd(0x30);
delay(5);
lcd_write_cmd(0x0c);  //¿ªÏÔʾ£¬²»ÏÔʾ¹â±ê
delay(5);
lcd_write_cmd(0x06);  //дһ¸ö×Ö·ûºóµØÖ·Ö¸Õë×Ô¶¯¼Ó1
delay(5);
lcd_write_cmd(0x01);   //ÇåÆÁ
delay(5);
}



//  Ö÷º¯Êý£¨³ÌÐòÈë¿Ú£©
int main(void)
{
    jtagWait();                                             //  ·ÀÖ¹JTAGʧЧ£¬ÖØÒª£¡
    clockInit();                                            //  Ê±ÖÓ³õʼ»¯£º¾§Õñ£¬6MHz
    SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOA);
        GPIOPinTypeGPIOOutput(lcd_port,lcd_rs|lcd_rw|lcd_en);
        SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOC);       
        GPIOPinTypeGPIOOutput(lcd_data,0xFF);
        lcd_init();
    for (;;)
    {
          lcd_pos(1,1);
     lcd_write_string("´²Ç°Ã÷Ô¹â");

    }
}

missforever

楼主，原理图怎么看不到？ 贴一下让我们看看哈~