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个人觉得5110模块非常好用，于是写了一个驱动，让好用的arduino驱动好用的lcd。程序写得比较初级，只有ascii字符显示，还有很多修改空间，比如还少了中文显示函数和图形显示函数，还有任意位置打点函数，可能过两天整理一下，编写一个5110的函数库，大家只要include一下就可以使用了：） 欢迎大家使用这个范例来和arduino进行更深层次的互动 （！注意事项：lcd5110 vcc接口只能输入3v电压，接入arduino的3v端，过高的电压可能会导致lcd烧毁，背景led灯也是标准3v输入，其余接口的逻辑电压可以使用5v） 更多深入了解http://code./learningaboutarduinonokialcd //**************************************************************/ // nokia 5110 arduino驱动程序（超声波测距） // 程序设计：kent // 版本1.0 // gongzheng19881116@126.com // 2010.6 //**************************************************************/ //端口定义 int lcd_ce=2; int lcd_rst=3; int sclk=4; int sdin=5; int lcd_dc=6; int inputpin=8; // 定义超声波信号接收接口 int outputpin=9; // 定义超声波信号发出接口 /****************************************************************/ void setup() { pinmode(inputpin, input); pinmode(outputpin, output); } //****************************定义ascii字符**********************// /********************************** 6 x 8 font 1 pixel space at left and bottom index = ascii - 32 ***********************************/ const unsigned char font6x8[][6] = { { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }, // sp { 0x00, 0x00, 0x00, 0x2f, 0x00, 0x00 }, // ! { 0x00, 0x00, 0x07, 0x00, 0x07, 0x00 }, // " { 0x00, 0x14, 0x7f, 0x14, 0x7f, 0x14 }, // # { 0x00, 0x24, 0x2a, 0x7f, 0x2a, 0x12 }, // $ { 0x00, 0x62, 0x64, 0x08, 0x13, 0x23 }, // % { 0x00, 0x36, 0x49, 0x55, 0x22, 0x50 }, // & { 0x00, 0x00, 0x05, 0x03, 0x00, 0x00 }, // ' { 0x00, 0x00, 0x1c, 0x22, 0x41, 0x00 }, // ( { 0x00, 0x00, 0x41, 0x22, 0x1c, 0x00 }, // ) { 0x00, 0x14, 0x08, 0x3e, 0x08, 0x14 }, // * { 0x00, 0x08, 0x08, 0x3e, 0x08, 0x08 }, // + { 0x00, 0x00, 0x00, 0xa0, 0x60, 0x00 }, // , { 0x00, 0x08, 0x08, 0x08, 0x08, 0x08 }, // - { 0x00, 0x00, 0x60, 0x60, 0x00, 0x00 }, // . { 0x00, 0x20, 0x10, 0x08, 0x04, 0x02 }, // / { 0x00, 0x3e, 0x51, 0x49, 0x45, 0x3e }, // 0 { 0x00, 0x00, 0x42, 0x7f, 0x40, 0x00 }, // 1 { 0x00, 0x42, 0x61, 0x51, 0x49, 0x46 }, // 2 { 0x00, 0x21, 0x41, 0x45, 0x4b, 0x31 }, // 3 { 0x00, 0x18, 0x14, 0x12, 0x7f, 0x10 }, // 4 { 0x00, 0x27, 0x45, 0x45, 0x45, 0x39 }, // 5 { 0x00, 0x3c, 0x4a, 0x49, 0x49, 0x30 }, // 6 { 0x00, 0x01, 0x71, 0x09, 0x05, 0x03 }, // 7 { 0x00, 0x36, 0x49, 0x49, 0x49, 0x36 }, // 8 { 0x00, 0x06, 0x49, 0x49, 0x29, 0x1e }, // 9 { 0x00, 0x00, 0x36, 0x36, 0x00, 0x00 }, // : { 0x00, 0x00, 0x56, 0x36, 0x00, 0x00 }, // ; { 0x00, 0x08, 0x14, 0x22, 0x41, 0x00 }, // < { 0x00, 0x14, 0x14, 0x14, 0x14, 0x14 }, // = { 0x00, 0x00, 0x41, 0x22, 0x14, 0x08 }, // > { 0x00, 0x02, 0x01, 0x51, 0x09, 0x06 }, // ? { 0x00, 0x32, 0x49, 0x59, 0x51, 0x3e }, // @ { 0x00, 0x7c, 0x12, 0x11, 0x12, 0x7c }, // a { 0x00, 0x7f, 0x49, 0x49, 0x49, 0x36 }, // b { 0x00, 0x3e, 0x41, 0x41, 0x41, 0x22 }, // c { 0x00, 0x7f, 0x41, 0x41, 0x22, 0x1c }, // d { 0x00, 0x7f, 0x49, 0x49, 0x49, 0x41 }, // e { 0x00, 0x7f, 0x09, 0x09, 0x09, 0x01 }, // f { 0x00, 0x3e, 0x41, 0x49, 0x49, 0x7a }, // g { 0x00, 0x7f, 0x08, 0x08, 0x08, 0x7f }, // h { 0x00, 0x00, 0x41, 0x7f, 0x41, 0x00 }, // i { 0x00, 0x20, 0x40, 0x41, 0x3f, 0x01 }, // j { 0x00, 0x7f, 0x08, 0x14, 0x22, 0x41 }, // k { 0x00, 0x7f, 0x40, 0x40, 0x40, 0x40 }, // l { 0x00, 0x7f, 0x02, 0x0c, 0x02, 0x7f }, // m { 0x00, 0x7f, 0x04, 0x08, 0x10, 0x7f }, // n { 0x00, 0x3e, 0x41, 0x41, 0x41, 0x3e }, // o { 0x00, 0x7f, 0x09, 0x09, 0x09, 0x06 }, // p { 0x00, 0x3e, 0x41, 0x51, 0x21, 0x5e }, // q { 0x00, 0x7f, 0x09, 0x19, 0x29, 0x46 }, // r { 0x00, 0x46, 0x49, 0x49, 0x49, 0x31 }, // s { 0x00, 0x01, 0x01, 0x7f, 0x01, 0x01 }, // t { 0x00, 0x3f, 0x40, 0x40, 0x40, 0x3f }, // u { 0x00, 0x1f, 0x20, 0x40, 0x20, 0x1f }, // v { 0x00, 0x3f, 0x40, 0x38, 0x40, 0x3f }, // w { 0x00, 0x63, 0x14, 0x08, 0x14, 0x63 }, // x { 0x00, 0x07, 0x08, 0x70, 0x08, 0x07 }, // y { 0x00, 0x61, 0x51, 0x49, 0x45, 0x43 }, // z { 0x00, 0x00, 0x7f, 0x41, 0x41, 0x00 }, // [ { 0x00, 0x55, 0x2a, 0x55, 0x2a, 0x55 }, // 55 { 0x00, 0x00, 0x41, 0x41, 0x7f, 0x00 }, // ] { 0x00, 0x04, 0x02, 0x01, 0x02, 0x04 }, // ^ { 0x00, 0x40, 0x40, 0x40, 0x40, 0x40 }, // _ { 0x00, 0x00, 0x01, 0x02, 0x04, 0x00 }, // ' { 0x00, 0x20, 0x54, 0x54, 0x54, 0x78 }, // a { 0x00, 0x7f, 0x48, 0x44, 0x44, 0x38 }, // b { 0x00, 0x38, 0x44, 0x44, 0x44, 0x20 }, // c { 0x00, 0x38, 0x44, 0x44, 0x48, 0x7f }, // d { 0x00, 0x38, 0x54, 0x54, 0x54, 0x18 }, // e { 0x00, 0x08, 0x7e, 0x09, 0x01, 0x02 }, // f { 0x00, 0x18, 0xa4, 0xa4, 0xa4, 0x7c }, // g { 0x00, 0x7f, 0x08, 0x04, 0x04, 0x78 }, // h { 0x00, 0x00, 0x44, 0x7d, 0x40, 0x00 }, // i { 0x00, 0x40, 0x80, 0x84, 0x7d, 0x00 }, // j { 0x00, 0x7f, 0x10, 0x28, 0x44, 0x00 }, // k { 0x00, 0x00, 0x41, 0x7f, 0x40, 0x00 }, // l { 0x00, 0x7c, 0x04, 0x18, 0x04, 0x78 }, // m { 0x00, 0x7c, 0x08, 0x04, 0x04, 0x78 }, // n { 0x00, 0x38, 0x44, 0x44, 0x44, 0x38 }, // o { 0x00, 0xfc, 0x24, 0x24, 0x24, 0x18 }, // p { 0x00, 0x18, 0x24, 0x24, 0x18, 0xfc }, // q { 0x00, 0x7c, 0x08, 0x04, 0x04, 0x08 }, // r { 0x00, 0x48, 0x54, 0x54, 0x54, 0x20 }, // s { 0x00, 0x04, 0x3f, 0x44, 0x40, 0x20 }, // t { 0x00, 0x3c, 0x40, 0x40, 0x20, 0x7c }, // u { 0x00, 0x1c, 0x20, 0x40, 0x20, 0x1c }, // v { 0x00, 0x3c, 0x40, 0x30, 0x40, 0x3c }, // w { 0x00, 0x44, 0x28, 0x10, 0x28, 0x44 }, // x { 0x00, 0x1c, 0xa0, 0xa0, 0xa0, 0x7c }, // y { 0x00, 0x44, 0x64, 0x54, 0x4c, 0x44 }, // z { 0x14, 0x14, 0x14, 0x14, 0x14, 0x14 } // horiz lines }; /************************lcd初始化函数********************************/ void lcd_init(void) { //先设置为输出 pinmode(sclk,output); pinmode(sdin,output); pinmode(lcd_dc,output); pinmode(lcd_ce,output); pinmode(lcd_rst,output); // 产生一个让lcd复位的低电平脉冲 digitalwrite( lcd_rst, low); delaymicroseconds(1); digitalwrite( lcd_rst, high); // 关闭lcd digitalwrite( lcd_ce, low); delaymicroseconds(1); // 使能lcd digitalwrite( lcd_ce, high); //lcd_ce = 1; delaymicroseconds(1); lcd_write_byte(0x21, 0); // 使用扩展命令设置lcd模式 lcd_write_byte(0xc8, 0); // 设置偏置电压 lcd_write_byte(0x06, 0); // 温度校正 lcd_write_byte(0x13, 0); // 1:48 lcd_write_byte(0x20, 0); // 使用基本命令 lcd_clear(); // 清屏 lcd_write_byte(0x0c, 0); // 设定显示模式，正常显示 // 关闭lcd digitalwrite( lcd_ce, low); //lcd_ce = 0; } /************************lcd清屏函数*******************************/ void lcd_clear(void) { unsigned int i; lcd_write_byte(0x0c, 0); lcd_write_byte(0x80, 0); for (i=0; i<504; i++) { lcd_write_byte(0, 1); } } /*************************设置字符位置函数**************************/ void lcd_set_xy(unsigned char x, unsigned char y) { lcd_write_byte(0x40 | y, 0);// column lcd_write_byte(0x80 | x, 0);// row } /*************************ascii字符显示函数*************************/ void lcd_write_char(unsigned char c) { unsigned char line; c -= 32; for (line=0; line<6; line++) { lcd_write_byte(font6x8[c][line], 1); } } /*******************************************************************/ /*------------------------------------------------- lcd_write_english_string : 英文字符串显示函数 输入参数：*s ：英文字符串指针； x、y : 显示字符串的位置,x 0-83 ,y 0-5 --------------------------------------------------*/ void lcd_write_english_string(unsigned char x,unsigned char y,char *s) { lcd_set_xy(x,y); while (*s) { lcd_write_char(*s); s++; } } /******************************************************************/ /*--------------------------------------------- lcd_write_byte : 写数据到lcd 输入参数：data ：写入的数据； command ：写数据/命令选择； ---------------------------------------------*/ void lcd_write_byte(unsigned char dat, unsigned char command) { unsigned char i; digitalwrite( lcd_ce, low); // 使能lcd_ce = 0 if (command == 0) { digitalwrite( lcd_dc, low);// 传送命令 lcd_dc = 0; } else { digitalwrite( lcd_dc, high);// 传送数据lcd_dc = 1; } for(i=0;i<8;i++) { if(dat&0x80) { digitalwrite( sdin, high);//sdin = 1; } else { digitalwrite( sdin, low);//sdin = 0; } digitalwrite( sclk, low);//sclk = 0; dat = dat << 1; digitalwrite( sclk, high);//sclk = 1; } digitalwrite( lcd_ce, high);//lcd_ce = 1; } /*************************以下为主函数*****************************/ void loop() { lcd_init();//初始化液晶 lcd_clear(); lcd_write_english_string(0,0," --arduino-- "); lcd_write_english_string(0,2,"renge:"); lcd_write_english_string(0,4,"design by kent"); lcd_write_english_string(0,5," 2010.6 "); while(1) { digitalwrite(outputpin, low); // 使发出发出超声波信号接口低电平2μs delaymicroseconds(2); digitalwrite(outputpin, high); // 使发出发出超声波信号接口高电平10μs，这里是至少10μs delaymicroseconds(10); digitalwrite(outputpin, low); // 保持发出超声波信号接口低电平 int distance = pulsein(inputpin, high); // 读出脉冲时间 distance= distance/58; // 将脉冲时间转化为距离（单位：厘米） if(distance>120) { lcd_write_english_string(35,2,"???"); } else { lcd_write_english_string(60,2,"cm"); lcd_set_xy(35, 2); lcd_write_char( 0x30+distance%1000/100); //显示百位数 lcd_write_char( 0x30+distance%100/10); //显示十位数 lcd_write_char( 0x30+distance%10); //显示个位数 } delay(10); } }  
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