手里有一块12864的液晶显示器，今天拿起来用stm32F103做了一个工程，方便大家参考，希望对大家能够有用。PDF文档仅共参考，我使用的LCD的核心与pdf上的有所不同。
- #include "12864.h"
- GPIO_InitTypeDef GPIO_InitStructure;
- void Delay(__IO uint32_t nCount)
- {
- for(; nCount != 0; nCount--);
- }
- void send_dat(unsigned char dat)
- {
- unsigned char i;
- //GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
- for(i=0;i<8;i++)
- {
- if((dat&0x80)==0x80) SID_1;
- if((dat&0x80)==0x00) SID_0;
- CLK_0;
- Delay(35);
- CLK_1;
- dat<<=1;
- }
- }
- unsigned char get_byte()
- {
- unsigned char i,temp1=0,temp2=0;
- //GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPU;
- for(i=0;i<8;i++)
- {
- temp1=temp1<<1;
- CLK_0;
- Delay(25);
- CLK_1;
- Delay(20);
- CLK_0;
- if(GPIO_ReadOutputDataBit(GPIOE,GPIO_Pin_3)) temp1++;
- }
- for(i=0;i<8;i++)
- {
- temp2=temp2<<1;
- CLK_0;
- Delay(25);
- CLK_1;
- Delay(25);
- CLK_0;
- if(GPIO_ReadOutputDataBit(GPIOE,GPIO_Pin_3)) temp2++;
- }
- //GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
- return ((0xf0&temp1)+(0x0f&temp2));
- }
- void check_busy()
- {
- do
- {
- send_dat(0xfc);
- }
- while((get_byte()&0x8000)==0x8000);
- }
- void send_cmd(unsigned char cmd)
- {
- check_busy();
- send_dat(0xf8); //
- send_dat(cmd&0xf0); //
- send_dat((cmd&0x0f)<<4); //
- }
- void write_char(unsigned char dat)
- {
- check_busy();
- send_dat(0xfa);//rw=0;rs=1
- send_dat(dat&0xf0);
- send_dat((dat&0x0f)<<4);
- }
- void lcd_clear() //清除显示
- {
- send_cmd(0x01);
- }
- void lcd_pos(unsigned char y_add , unsigned char x_add)
- {
- switch(y_add)
- {
- case 1:
- send_cmd(0X80|x_add);break;
- case 2:
- send_cmd(0X90|x_add);break;
- case 3:
- send_cmd(0X88|x_add);break;
- case 4:
- send_cmd(0X98|x_add);break;
- default:break;
- }
- }
- void lcd_wstr(unsigned char y_add , unsigned char x_add , unsigned char *str) //
- {
- unsigned char i;
- lcd_pos(y_add , x_add);
- for(i=0;str!='\0';i++)
- {
- write_char(str);
- }
- }
- void write_figer(unsigned char y_add , unsigned char x_add , unsigned int figer)//在任何位置写数字
- {
- unsigned char d[5],i,j;
- lcd_pos(y_add , x_add);
- d[4]=figer%10;
- d[3]=figer%100/10;
- d[2]=figer%1000/100;
- d[1]=figer%10000/1000;
- d[0]=figer/10000;
- for(i=0;i<5;i++)
- {
- if(d!=0)break;
- }
- if(i==5)i--;
- if(i==4)send_dat(0x30);//数据装完，准备发送
- for(j=i;j<5;j++)
- {
- send_dat(d[j]|0x30);//取得的数字加上0x30也即得到该数字的ASCII码，再将该数字发送去显示
- }
- }
- void lcd_init() //
- {
- Delay(0xfff);
- send_cmd(0x30);
- send_cmd(0x0C);//0000,1100 整体显示，游标off，游标位置off
- send_cmd(0x01);//0000,0001 清DDRAM
- send_cmd(0x02);//0000,0010 DDRAM地址归位
- send_cmd(0x80);//1000,0000 设定DDRAM 7位地址000，0000到地址计数器A
- }
- /******************* (C) COPYRIGHT 2011 奋斗STM32 *****END OF FILE****/
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