诺基亚5110显示屏51单片机驱动程序
- #include
- #include "intrins.h" //_nop_();延时函数用
- #include //字符代码表
- #define uchar unsigned char
- #define uint unsigned int
- ***it sce = P3^4; //片选
- ***it res = P0^0; //复位,0复位
- ***it dc = P3^5; //1写数据,0写指令
- ***it sdin = P3^7; //数据
- ***it sclk = P3^6; //时钟
- uint data temp_data[2]={0x00,0x00}; //读出温度暂放
- //================18b20数据口定义===============
- ***it DQ=P0^0; //温度输入口
- uint h;
- uint temp;
- unsigned char presence,flash=0;
- /*****************延时函数*************************/
- void delay(uint t)
- {
- for (;t>0;t--);
- }
- //================延时函数=====================
- void delay_1ms(void)//1ms延时函数
- {
- unsigned int i;
- for (i=0;i<500;i++);
- }
- /*---------------lcd显示函数开始----------------
- LCD_write_byte: 使用SPI接口写数据到LCD
- 输入参数:dt:写入的数据;
- command :写数据/命令选择;
- 编写日期:20080918
- ----------------------------------------------*/
- void LCD_write_byte(unsigned char dt, unsigned char command)
- {
- unsigned char i;
- sce=0;
- dc=command;
- for(i=0;i<8;i++)
- {
- if(dt&0x80)
- sdin=1;
- else
- sdin=0;
- dt=dt<<1;
- sclk=0;
- sclk=1;
- }
- dc=1;
- sce=1;
- sdin=1;
- }
- /*---------------------------------------
- LCD_init: 5110LCD初始化
- 编写日期:20080918
- ----------------------------------------- */
- void LCD_init(void)
- {
- res=0;
- delay_1ms();
- res=1;
- LCD_write_byte(0x21,0);//初始化Lcd,功能设定使用扩充指令
- LCD_write_byte(0xd0,0);//设定液晶偏置电压
- LCD_write_byte(0x20,0);//使用基本指令
- LCD_write_byte(0x0C,0);//设定显示模式,正常显示
- }
- /*-------------------------------------------
- LCD_set_XY: 设置LCD坐标函数
- 输入参数:X:0-83 Y:0-5
- 编写日期:20080918
- ---------------------------------------------*/
- void LCD_set_XY(unsigned char X, unsigned char Y)
- {
- LCD_write_byte(0x40 | Y, 0);// column
- LCD_write_byte(0x80 | X, 0);// row
- }
- /*------------------------------------------
- LCD_clear: LCD清屏函数
- 编写日期:20080918
- --------------------------------------------*/
- void LCD_clear(void)
- {
- unsigned char t;
- unsigned char k;
- LCD_set_XY(0,0);
- for(t=0;t<6;t++)
- {
- for(k=0;k<84;k++)
- {
- LCD_write_byte(0x00,1);
- }
- }
- }
- /*---------------------------------------------
- LCD_write_shu: 显示8(宽)*16(高)点阵列数字字母符号等半角类
- 输入参数:c:显示的字符;
- 编写日期:20080918
- -----------------------------------------------*/
- void LCD_write_shu(unsigned char row, unsigned char page,unsigned char c) //row:列 page:页 dd:字符
- {
- unsigned char i;
- LCD_set_XY(row*8, page);// 列,页
- for(i=0; i<8;i++)
- {
- LCD_write_byte(shuzi[c*16+i],1);
- }
-
- LCD_set_XY(row*8, page+1);// 列,页
- for(i=8; i<16;i++)
- {
- LCD_write_byte(shuzi[c*16+i],1);
- }
- }
- /*---------------------------------------------
- LCD_write_hanzi: 显示16(宽)*16(高)点阵列汉字等半角类
- 输入参数:c:显示的字符;
- 编写日期:20080918
- -----------------------------------------------*/
- void LCD_write_hanzi(unsigned char row, unsigned char page,unsigned char c) //row:列 page:页 dd:字符
- {
- unsigned char i;
- LCD_set_XY(row*8, page);// 列,页
- for(i=0; i<16;i++)
- {
- LCD_write_byte(hanzi[c*32+i],1);
- }
- LCD_set_XY(row*8, page+1);// 列,页
- for(i=16; i<32;i++)
- {
- LCD_write_byte(hanzi[c*32+i],1);
- }
- }
- //=================lcd显示函数结束================
- //=================18b20相关函数开始==============
- /****************DS18B20复位函数************************/
- ow_reset(void)
- {
- char presence=1;
- while(presence)
- {
- while(presence)
- {
- DQ=1;_nop_();_nop_(); //从高拉倒低
- DQ=0;
- delay(50); //550 us
- DQ=1;
- delay(6); //66 us
- presence=DQ; //presence=0 复位成功,继续下一步
- }
- delay(45); //延时500 us
- presence=~DQ;
- }
- DQ=1; //拉高电平
- }
- //
- //
- /****************DS18B20写命令函数************************/
- void write_byte(uchar val) //向1-WIRE 总线上写1个字节
- {
- uchar i;
- for(i=8;i>0;i--)
- {
- DQ=1;_nop_();_nop_(); //从高拉倒低
- DQ=0;_nop_();_nop_();_nop_();_nop_(); //5 us
- DQ=val&0x01; //最低位移出
- delay(6); //66 us
- val=val/2; //右移1位
- }
- DQ=1;
- delay(1);
- }
- /****************DS18B20读1字节函数************************/
- uchar read_byte(void) //从总线上取1个字节
- {
- uchar i;
- uchar value=0;
- for(i=8;i>0;i--)
- {
- DQ=1;_nop_();_nop_();
- value>>=1;
- DQ=0;_nop_();_nop_();_nop_();_nop_(); //4 us
- DQ=1;_nop_();_nop_();_nop_();_nop_(); //4 us
- if(DQ)value|=0x80;
- delay(6); //66 us
- }
- DQ=1;
- return(value);
- }
- //
- /****************读出温度函数************************/
- read_temp()
- {
- ow_reset(); //总线复位
- if(presence==1)
- {flash=1;} //DS18B20不正常,蜂鸣器报警
- delay(200);
- write_byte(0xcc); //发命令
- write_byte(0x44); //发转换命令
- ow_reset();
- delay(1);
- write_byte(0xcc); //发命令
- write_byte(0xbe);
- temp_data[0]=read_byte(); //读温度值的第字节
- temp_data[1]=read_byte(); //读温度值的高字节
- temp=temp_data[1];
- temp<<=8;
- temp=temp|temp_data[0]; // 两字节合成一个整型变量。
- return temp; //返回温度值
- }
- //=================18b20相关函数结束==============
- //=================主函数=========================
- void main(void)
- {
- unsigned char k;
- res=0;
- for(k=0;k<250;k++);
- res=1;
- LCD_init(); //初始化LCD模块
- LCD_clear(); //清屏幕
- LCD_write_hanzi(1,0,0); //
- LCD_write_hanzi(3,0,1); //
- LCD_write_hanzi(5,0,2); //
- LCD_write_hanzi(7,0,3); //
- LCD_write_hanzi(1,2,4); //
- LCD_write_hanzi(4,2,5); //
- LCD_write_hanzi(7,2,6); //
-
- LCD_write_shu(0,4,5); //
- LCD_write_shu(1,4,1); //
- LCD_write_shu(2,4,35); //
- LCD_write_shu(3,4,33); //
- LCD_write_shu(4,4,13); //
- LCD_write_shu(5,4,25); //
- LCD_write_shu(6,4,19); //
- LCD_write_shu(7,4,45); //
- LCD_write_shu(8,4,12); //
- LCD_write_shu(9,4,23); //
- while(1)
- {
- }
- }
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诺基亚5110显示屏51单片机驱动程序
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2011-8-11 10:34:35
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