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"title": "RGB_1602(chinese)",
"rev_id": 384,
"updated_at": "2015-07-06T07:10:17+00:00",
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"title": "RGB_1602(chinese)",
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"content": "# RGB 1602(chinese)",
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"title": "RGB_1602(chinese)",
"rev_id": 384,
"heading_path": "产品简介",
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"content": "相比原来的LCD1602显示模块我们做了一些改进，使其融合LCD多彩显示和按键扩展功能。\nLCD1602是一款提供2行16字符液晶显示的树莓派扩展板。扩展了多个按键输入，可供用户作为LCD显示屏的菜单选择按键或者操控按键使用。\n一个扩展板就能让你与树莓派进行互动。用户可以通过调节扩展板上的微型电位器,调节LCD屏的对比度。\n对于树莓派初学者来说，不必为繁琐复杂液晶驱动电路连线而头疼了。\n这款1602 LCD扩展板将电路简化，直接将此板插到树莓派系统板上即可使用。\n通过i2c操作的mcp23016扩展io口,减少了对树莓派引脚的占用。\n调用wiringPi的lcd库，简单的几行代码便可以完数据和字符的显示功能。\n除此之外,显示模块可以单独取出和面包板搭配使用,避免了浪费。\n![TaterLi 修改\\|180px](DSC_0003.JPG \"TaterLi 修改|180px\")",
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"heading_path": "产品参数",
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"content": "| 项目 | 参数 |\n|:-------------:|:------------------:|\n| 模块电压 | 5V |\n| 背光颜色 | 红绿蓝 |\n| 模块最大电流 | 60mA |\n| LCD 显示模式 | STN |\n| 工作温度 | 0～+50℃ |\n| 存储温度 | -20～+70℃ |\n| 模块尺寸 | 82x58(mm) |\n| 显示区域 | 64.5x16 |\n| 显示字符数目 | 16x2行 |\n| 控制器 | SplC780 |\n| 安装尺寸\/孔径 | 75.0\\*31.0\/ 2.8mm |\n| 显示字符数目 | 16x2行 |\n| LCD点大小 | 0.55\\*0.65mm |\n| 接口形式\/尺寸 | 18PIN,PH2.54,1.0mm |",
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"title": "RGB_1602(chinese)",
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"heading_path": "产品展示",
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"content": "![\"RGB1602_p1.JPG\"](\"RGB1602_p1.JPG\" "\\"RGB1602_p1.JPG\\"")
\n![\"RGB1602_p4.JPG\"](\"RGB1602_p4.JPG\" "\\"RGB1602_p4.JPG\\"")
\n![\"RGB1602_p5.JPG\"](\"RGB1602_p5.JPG\" "\\"RGB1602_p5.JPG\\"")
\n![\"RGB1602_p3.JPG\"](\"RGB1602_p3.JPG\" "\\"RGB1602_p3.JPG\\"")
",
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"title": "RGB_1602(chinese)",
"rev_id": 384,
"heading_path": "电气连接图",
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"content": "\n![\"1602test1.png\"](\"1602test1.png\" "\\"1602test1.png\\"")
\n1602test1.png<\/figcaption>\n<\/figure>",
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{
"title": "RGB_1602(chinese)",
"rev_id": 384,
"heading_path": "产品尺寸大小",
"chunk_index": 5,
"content": "![\"rgb1602_show3.JPG\"](\"rgb1602_show3.JPG\" "\\"rgb1602_show3.JPG\\"")
\n![\"1602RGB_dimention.png\"](\"1602RGB_dimention.png\" "\\"1602RGB_dimention.png\\"")
",
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"title": "RGB_1602(chinese)",
"rev_id": 384,
"heading_path": "RGB1602显示屏幕引脚说明",
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"content": "| 管脚号 | 符号 | 功能 |\n|:------:|:----:|:-----------------:|\n| 1 | Vss | 电源地 |\n| 2 | Vdd | 电源正极 |\n| 3 | Vo | LCD偏压输入 |\n| 4 | RS | 数据命令选择 |\n| 5 | R\/W | 读写控制信号 |\n| 6 | E | 使能信号 |\n| 7 | DB0 | 数据IO口0 |\n| 8 | DB1 | 数据IO口1 |\n| 9 | DB2 | 数据IO口2 |\n| 10 | DB3 | 数据IO口3 |\n| 11 | DB4 | 数据IO口4 |\n| 12 | DB5 | 数据IO口5 |\n| 13 | DB6 | 数据IO口6 |\n| 14 | DB7 | 数据IO口7 |\n| 15 | LEDA | LED背光灯正极 |\n| 16 | LEDR | 红色LED背光灯控制 |\n| 17 | LEDG | 绿色LED背光灯控制 |\n| 18 | LEDB | 蓝色LED背光灯控制 |\n| | | |\n\n![\"1602_RGB_test3.png\"](\"1602_RGB_test3.png\" "\\"1602_RGB_test3.png\\"")
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"title": "RGB_1602(chinese)",
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"heading_path": "如何使用",
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"content": "- 对于初次使用的用户请确保树莓派I2C接口已经打开,如何打I2C接口请参考 \n- 操作RGB1602显示模块需要使用wiringPi库,如何安装wiringPi库请参考 \n- wiringPi库安装完成后,在用户目录下输入以下代码`sudo vim.tiny lcd1602.c`,新建一个c文件\n\n\n![\"1602_tech1.png\"](\"1602_tech1.png\" "\\"1602_tech1.png\\"")
\n1602_tech1.png<\/figcaption>\n<\/figure>\n\n- 将下面的[示例代码复制进新建立的lcd](#tech1 \"wikilink\")1602.c文件\n\n\n![\"1602_tech2.png\"](\"1602_tech2.png\" "\\"1602_tech2.png\\"")
\n1602_tech2.png<\/figcaption>\n<\/figure>\n\n- 在vim编辑器下输入:字符,之后输入wq按回车键保存新建立的文件并退出编辑器\n\n\n![\"1602_tech3.png\"](\"1602_tech3.png\" "\\"1602_tech3.png\\"")
\n1602_tech3.png<\/figcaption>\n<\/figure>\n\n- 使用gcc编译刚刚建立的C文件,输入`gcc lcd1602.c -lwiringPi \/home\/pi\/wiringPi\/devLib\/lcd.o -o lcd1602`编译程序\n\n\n![\"1602_tech5.png\"](\"1602_tech5.png\" "\\"1602_tech5.png\\"")
\n1602_tech5.png<\/figcaption>\n<\/figure>\n\n- 编译成功好可以看到当前用户目录下面已经多了一个可执行文件lcd1602输入`sudo modprobe i2c-dev`加载i2c模块",
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"title": "RGB_1602(chinese)",
"rev_id": 384,
"heading_path": "如何使用",
"chunk_index": 8,
"content": "![\"1602_tech6.png\"](\"1602_tech6.png\" "\\"1602_tech6.png\\"")
\n![\"1602_tech8.png\"](\"1602_tech8.png\" "\\"1602_tech8.png\\"")
\n\n- 输入`sudo .\/lcd1602`执行可以看到RGB1602已经成功点亮了\n\n![\"1602_tech9.png\"](\"1602_tech9.png\" "\\"1602_tech9.png\\"")
\n![\"show2.JPG\"](\"show2.JPG\" "\\"show2.JPG\\"")
\n\n- 彩色背光展示\n\n![](show1.gif \"show1.gif\")",
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"title": "RGB_1602(chinese)",
"rev_id": 384,
"heading_path": "示例代码说明",
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"content": "#include \/\/添加标准输入输出头文件\n #include \/\/添加wiringpi头文件\n #include \/\/添加mcp23017操作头文件\n #include \/\/添加lcd操作头文件\n #include \/\/添加软件pwm头文件\n int main()\n {\n long value=0;\n int rand_num;\n int value_blue; \/\/蓝色背光亮度\n int value_red; \/\/红色背光亮度\n int value_green; \/\/绿色背光亮度\n int display,i,count;\n wiringPiSetup(); \/\/初始化wiringPi\n mcp23017Setup (100, 0x20); \/\/初始化mcp23017芯片i2c地址0x20,地址起始100\n printf (\"Raspberry Pi - MCP23017 Test\\n\"); \/\/打印信息\n for(i=0;i<16;i++)",
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"rev_id": 384,
"heading_path": "示例代码说明",
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"content": "pinMode(100+i,OUTPUT); \/\/配置引脚 100 - 115为输出\n digitalWrite(101,0); \/\/引脚101为低电平\n display=lcdInit(2,16,4,100,102,103,104,105,106,0,0,0,0); \/\/lcd初始化2*16,4位控制,使用100,101,102,103,104脚作为控制引脚\n lcdHome(display); \/\/光标复位\n lcdClear(display); \/\/清空屏幕\n lcdPosition(display,0,0); \/\/设置显示位置(0,0)\n lcdPuts(display,\"Hello World\"); \/\/打印字符Hello World\n lcdPosition(display,0,1); \/\/设置显示位置(0,1)\n lcdPuts(display,\"www.52pi.net\"); \/\/打印字符(www.52pi.net)\n pinMode(0, OUTPUT); \/\/树莓派GPIO引脚0设置为输出\n pinMode(2, OUTPUT); \/\/树莓派GPIO引脚2设置为输出\n pinMode(3, OUTPUT); \/\/树莓派GPIO引脚3设置为输出",
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"heading_path": "示例代码说明",
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"content": "softPwmCreate (3, 50, 100); \/\/软件pwm设置引脚3 pwm值范围0-100 初始50\n softPwmCreate (2, 50, 100); \/\/软件pwm设置引脚2 pwm值范围0-100 初始50\n softPwmCreate (0, 50, 100); \/\/软件pwm设置引脚0 pwm值范围0-100 初始50\n while(1) \/\/循环\n {",
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"heading_path": "示例代码说明",
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"content": "delay(200); \/\/延时200ms\n value_red=(value<100)?value:0; \/\/0-100之间时红色颜色渐变\n value_green=(value>100&&value<200)?(value-100):0; \/\/100-200之间时绿色渐变\n value_blue=(value>200)?(value-200):0; \/\/200-300之间时蓝色渐变\n if(value>300) \/\/大于300时,颜色随机跳转\n {\n value_red=rand()%100;\n value_green=rand()%100;\n value_blue=rand()%100;\n }\n \/\/rand_num=rand();\n softPwmWrite (3,value_red); \/\/软件pwm控制红色\n softPwmWrite (2,value_green); \/\/软件pwm控制绿色\n softPwmWrite (0,value_blue); \/\/软件pwm控制蓝色\n\nvalue++;\n if(value>900) \/\/累加值在900,轮回\n {\n value=0;\n }\n\nlcdPosition(display,13,1);\n lcdPrintf(display,\"%d\",value); \/\/显示累加数值\n \/\/value_blue=0;\n\n}\n }",
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"title": "RGB_1602(chinese)",
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"heading_path": "附件",
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"content": "[参考代码](#1306-0.91-CODE.zip \"wikilink\")\n[屏幕手册](#SSD1306-Revision_1.0.pdf \"wikilink\")",
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