注意:1.0或者更高级版本IDE使用的库与002X IDE使用的库是不一样的,需要根据不同的IDE下载不同的库。(帖子尾部有附件下载)
12864是128*64点阵液晶模块的点阵数简称,业界约定俗成的简称。
控制芯片一般采用ST7920或者与之相兼容的。
数据总线采用8位并口与SPI串口方式。
12864液晶分带字库版本与不带字库版本。
字库版不需要用点阵生成器把汉字变成点阵后再输入,直接输入汉字内码即可显示出对应汉字,无字库版想要显示汉字,只能自己按照点阵方式驱动。
下图就是12864液晶实物。
下图是arduino与12864液晶SPI连接方式的硬件连接图
SPI连接方式驱动代码
ARDUINO 代码
/* LCD Arduino PIN1 = GND PIN2 = 5V RS(CS) = 8; RW(SID)= 9; EN(CLK) = 3; PIN15 PSB = GND; */ #include "LCD12864RSPI.h" #define AR_SIZE( a ) sizeof( a ) / sizeof( a[0] ) unsigned char show0[]={0xCE,0xAC,0xCB,0xBC,0xD7,0xD4,0xB6,0xAF,0xBB,0xAF};//维思自动化
unsigned char show1[]="www.weisiauto.com"; unsigned char logo0[]={ //笑脸 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, 0x00,0x00,0x00,0x00,0x00,0x00,0x01,0xFF, 0x80,0x00,0x00,0x00,0x00,0x00,0x00,0x00, 0x00,0x00,0x00,0x00,0x00,0x00,0x1F,0xFF, 0xF8,0x00,0x00,0x00,0x00,0x00,0x00,0x00, 0x00,0x00,0x00,0x00,0x00,0x00,0xFF,0xFF, 0xFF,0x00,0x00,0x00,0x00,0x00,0x00,0x00, 0x00,0x00,0x00,0x00,0x00,0x03,0xFE,0x00, 0x7F,0xC0,0x00,0x00,0x00,0x00,0x00,0x00, 0x00,0x00,0x00,0x00,0x00,0x0F,0xF0,0x00, 0x0F,0xF0,0x00,0x00,0x00,0x00,0x00,0x00, 0x00,0x00,0x00,0x00,0x00,0x1F,0x80,0x00, 0x01,0xF8,0x00,0x00,0x00,0x00,0x00,0x00, 0x00,0x00,0x00,0x00,0x00,0x3E,0x00,0x00, 0x00,0x7C,0x00,0x00,0x00,0x00,0x00,0x00, 0x00,0x00,0x00,0x00,0x00,0xF8,0x00,0x00, 0x00,0x1F,0x00,0x00,0x00,0x00,0x00,0x00, 0x00,0x00,0x00,0x00,0x01,0xF0,0x00,0x00, 0x00,0x0F,0x80,0x00,0x00,0x00,0x00,0x00, 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0x00,0x00,0x00,0x00,0x00,0x00,0xFF,0xFF, 0xFF,0x00,0x00,0x00,0x00,0x00,0x00,0x00, 0x00,0x00,0x00,0x00,0x00,0x00,0x1F,0xFF, 0xF8,0x00,0x00,0x00,0x00,0x00,0x00,0x00, 0x00,0x00,0x00,0x00,0x00,0x00,0x01,0xFF, 0x80,0x00,0x00,0x00,0x00,0x00,0x00,0x00, 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 }; void setup() { LCDA.Initialise(); // 屏幕初始化 delay(100); } void loop() { LCDA.CLEAR();//清屏 delay(100); LCDA.DisplayString(0,2,show0,AR_SIZE(show0));//第一行第三格开始,显示文字维思自动化 delay(100); LCDA.DisplayString(2,1,show1,AR_SIZE(show1));;//第三行第二格开始,显示文字weisiauto delay(5000); LCDA.CLEAR();//清屏 delay(100); LCDA.DrawFullScreen(logo0); delay(5000); }
/* LCD Arduino PIN1 = GND PIN2 = 5V RS(CS) = 8; RW(SID)= 9; EN(CLK) = 3; PIN15 PSB = GND; */ #include "LCD12864RSPI.h" #define AR_SIZE( a ) sizeof( a ) / sizeof( a[0] ) unsigned char show0[]={0xCE,0xAC,0xCB,0xBC,0xD7,0xD4,0xB6,0xAF,0xBB,0xAF};//维思自动化 unsigned char show1[]="Weisiauto"; unsigned char logo0[]={ //笑脸 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, 0x00,0x00,0x00,0x00,0x00,0x00,0x01,0xFF, 0x80,0x00,0x00,0x00,0x00,0x00,0x00,0x00, 0x00,0x00,0x00,0x00,0x00,0x00,0x1F,0xFF, 0xF8,0x00,0x00,0x00,0x00,0x00,0x00,0x00, 0x00,0x00,0x00,0x00,0x00,0x00,0xFF,0xFF, 0xFF,0x00,0x00,0x00,0x00,0x00,0x00,0x00, 0x00,0x00,0x00,0x00,0x00,0x03,0xFE,0x00, 0x7F,0xC0,0x00,0x00,0x00,0x00,0x00,0x00, 0x00,0x00,0x00,0x00,0x00,0x0F,0xF0,0x00, 0x0F,0xF0,0x00,0x00,0x00,0x00,0x00,0x00, 0x00,0x00,0x00,0x00,0x00,0x1F,0x80,0x00, 0x01,0xF8,0x00,0x00,0x00,0x00,0x00,0x00, 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0x00,0x00,0x00,0x00,0x00,0x1F,0x80,0x00, 0x01,0xF8,0x00,0x00,0x00,0x00,0x00,0x00, 0x00,0x00,0x00,0x00,0x00,0x0F,0xE0,0x00, 0x07,0xF0,0x00,0x00,0x00,0x00,0x00,0x00, 0x00,0x00,0x00,0x00,0x00,0x03,0xFE,0x00, 0x3F,0xC0,0x00,0x00,0x00,0x00,0x00,0x00, 0x00,0x00,0x00,0x00,0x00,0x00,0xFF,0xFF, 0xFF,0x00,0x00,0x00,0x00,0x00,0x00,0x00, 0x00,0x00,0x00,0x00,0x00,0x00,0x1F,0xFF, 0xF8,0x00,0x00,0x00,0x00,0x00,0x00,0x00, 0x00,0x00,0x00,0x00,0x00,0x00,0x01,0xFF, 0x80,0x00,0x00,0x00,0x00,0x00,0x00,0x00, 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 }; void setup() { LCDA.Initialise(); // 屏幕初始化 delay(100); } void loop() { LCDA.CLEAR();//清屏 delay(100); LCDA.DisplayString(0,2,show0,AR_SIZE(show0));//第一行第三格开始,显示文字维思自动化 delay(100); LCDA.DisplayString(2,1,show1,AR_SIZE(show1));;//第三行第二格开始,显示文字weisiauto delay(5000); LCDA.CLEAR();//清屏 delay(100); LCDA.DrawFullScreen(logo0); delay(5000); }
实验效果如下
先来介绍一下怎样查找要输出地汉字的内码,打开汉字内码转换软件以后,点击转换就会显示出不同汉字对应的内码,比如”极”对应的内码是BCAB,那么给12864液晶发送的就是分为两段,0xBC与0xAB。这样就可以显示出极字了
本次实验使用12864液晶显示了一个笑脸图片,怎样显示任意图片呢?
先打开photoshop,新建文档,大小为128*64,位图
然后绘制出要现实的图案,比如这个笑脸,画好后保存。
然后打开取字模软件,先设置参数,如下图,主要是设置输出为C语言,大小为128*64,设置好后点击参数确定。
然后打开制作出来的图片,如果图片效果不是想要的白底黑字,参数里再重新设置下”黑白反取“
选择保存数据,跳出窗口,选择好路径进行保存。
保存出来的smile.h就是包含图片代码的文件,我们打开看一下,{ }括号中的内容,就是我们需要的。
一般使用SPI接法后,就很少使用8位接法了,因为占用端口太多了,但是还是放出来供大家学习下。
先上硬件连接图
下面的是8位接法的代码,使用了库文件。
ARDUINO 代码复制打印
/* LCD Arduino RS = 17; Analog Pin3 RW = 16; Analog Pin2 EN = 18; Analog Pin4 D0 = 8; D1 = 9; D2 = 10; D3 = 11; D4 = 4; D5 = 5; D6 = 6; D7 = 7; PIN15 PSB = 5V; */ #include "LCD12864R.h" #define AR_SIZE( a ) sizeof( a ) / sizeof( a[0] ) unsigned char show0[]={0xCE,0xAC,0xCB,0xBC,0xD7,0xD4,0xB6,0xAF,0xBB,0xAF};//极客工坊 unsigned char show1[]="www.weisiauto.com"; void setup() { LCDA.Initialise(); // 屏幕初始化 delay(100); } void loop() { LCDA.CLEAR();//清屏 delay(100); LCDA.DisplayString(0,2,show0,AR_SIZE(show0));//第一行第三格开始,显示文字维思自动化 delay(100); LCDA.DisplayString(2,1,show1,AR_SIZE(show1));;//第三行第二格开始,显示文字www.weisiauto.com while(1); }
如需源文件与库文件,可与我联系。