Arduino--基础（三）--0.96英寸的OLED的使用

参考：http://www.geek-workshop.com/thread-10634-1-1.html

OLED有两种协议：SPI和I2C

/*SPI协议*/
U8GLIB_SSD1306_128X64 u8g(13, 11, 10, 9); // SW SPI Com: SCK = 13, MOSI = 11, CS = 10, A0 = 9

/*I2C协议*/
U8GLIB_SSD1306_128X64 u8g(U8G_I2C_OPT_NONE);

四线：Vcc，GND，SCL，SDA
协议： IIC
A4–SDA
A5–SCL

• 首先安装一个外部库u8glib

  helloworld.c

#include "U8glib.h"
/*I2C协议*/
U8GLIB_SSD1306_128X64 u8g(U8G_I2C_OPT_NONE); 

void setup()
{
  if ( u8g.getMode() == U8G_MODE_R3G3B2 ) 
    u8g.setColorIndex(255);     // white
  else if ( u8g.getMode() == U8G_MODE_GRAY2BIT )
    u8g.setColorIndex(3);         // max intensity
  else if ( u8g.getMode() == U8G_MODE_BW )
    u8g.setColorIndex(1);         // pixel on

  // u8g.setFont(u8g_font_unifont);
  Serial.begin(9600);

  u8g.setFont(u8g_font_6x10);
  u8g.setFontRefHeightExtendedText();
  u8g.setDefaultForegroundColor();
  u8g.setFontPosTop();
}

void loop()
{
  u8g.firstPage();  
  do {
    u8g.drawStr(0,0,"hello world!");
  } while( u8g.nextPage() );
  delay(500);
}

二、显示汉字

汉字取模

测试程序：

#include "U8glib.h"
#include "utility/u8g.h"

//U8GLIB_SSD1306_128X64 u8g(13, 11, 10, 9); // SW SPI Com: SCK = 13, MOSI = 11, CS = 10, A0 = 9
U8GLIB_SSD1306_128X64 u8g(U8G_I2C_OPT_NONE);

const   uint8_t bitmap_z []   U8G_PROGMEM  ={  
0x00,0x00,0x01,0x80,0x03,0x80,0x3F,0xBC,0x7F,0xBE,0x73,0xCE,0x63,0xCE,0x63,0xCE,
0x63,0xCE,0x7B,0x9E,0x7F,0xBE,0x3F,0xBC,0x1F,0xB8,0x03,0x80,0x03,0x80,0x01,0x80
}; 

const   uint8_t bitmap_w []   U8G_PROGMEM  ={  
0x00,0x00,0x07,0xC0,0x3F,0xD8,0x7C,0x7E,0x7F,0xFE,0x00,0x00,0x1C,0x3C,0x1C,0x38,
0x0E,0x70,0x0F,0xF0,0x07,0xA0,0x0B,0xE0,0x3D,0xFC,0x7E,0xFE,0x7C,0x3E,0x30,0x00
};

void draw(void) {
  u8g.setColorIndex(1);
  u8g.drawBitmapP ( 0 , 0 , 2 , 16 , bitmap_z); 
  u8g.drawBitmapP ( 17 , 0 , 2 , 16 , bitmap_w ); 
 }

void setup() {  
}

void loop() {  
    u8g.firstPage();
    do  {
      draw();
    } while( u8g.nextPage() );
  }