u8g2库的相关资料

2017-12-1309:13:32更新51论坛上的帖子，大神自己写的库文件，待调试！

http://www.51hei.com/bbs/forum.php?mod=viewthread&tid=92967&extra=page%3D7&mobile=2

2017-12-1209:33:56更新资料

关于内存不足的问题摘要:http://www.arduino.cn/thread-32109-1-1.html

还在解决中，一直找不到原因。

链接arduino中文社区---传送门

我的资料备份

 #include <Arduino.h>
 #include <SPI.h>
 #include <U8g2lib.h>
 #include <dht11.h>
 dht11 DHT11;
 #define DHT11PIN A2
 //U8G2_SSD1306_128X64_NONAME_1_4W_SW_SPI u8g2(U8G2_R0, /* clock=*/ 4, /* data=*/ 5, /* cs=*/ 3, /* dc=*/ 6, /* reset=*/ 7);//多脚显示屏
 U8G2_SSD1306_128X64_NONAME_F_SW_I2C u8g2(U8G2_R0, /* clock=*/ A4, /* data=*/ A5, /* reset=*/ U8X8_PIN_NONE);   // 四角显示屏
 double Fahrenheit(double celsius)
 {
 return 1.8 * celsius + ;
 }    //摄氏温度度转化为华氏温度

 double Kelvin(double celsius)
 {
 return celsius + 273.15;
 }     //摄氏温度转化为开氏温度

 // 露点（点在此温度时，空气饱和并产生露珠）
 // 参考: http://wahiduddin.net/calc/density_algorithms.htm
 double dewPoint(double celsius, double humidity)
 {
 double A0= 373.15/(273.15 + celsius);
 double SUM = -7.90298 * (A0-);
 SUM += 5.02808 * log10(A0);
 SUM += -1.3816e-7 * (pow(, (11.344*(-/A0)))-) ;
 SUM += 8.1328e-3 * (pow(,(-3.49149*(A0-)))-) ;
 SUM += log10(1013.246);
 double VP = pow(, SUM-) * humidity;
 double T = log(VP/0.61078);   // temp var
 return (241.88 * T) / (17.558-T);
 }

 // 快速计算露点，速度是5倍dewPoint()
 // 参考: http://en.wikipedia.org/wiki/Dew_point
 double dewPointFast(double celsius, double humidity)
 {
 double a = 17.271;
 double b = 237.7;
 double temp = (a * celsius) / (b + celsius) + log(humidity/);
 double Td = (b * temp) / (a - temp);
 return Td;
 }
 void setup(void) {
   u8g2.begin();   //选择U8G2模式，或者U8X8模式
   Serial.begin();
 Serial.println("DHT11 TEST PROGRAM ");
 Serial.print("LIBRARY VERSION: ");
 Serial.println(DHT11LIB_VERSION);
 Serial.println();
 }

 void loop(void) {
   u8g2.firstPage();
   do {
      u8g2.setFont(u8g2_font_5x7_tr); //设置字体//font_ncenB14_tr
      u8g2.setCursor(, );    //设置光标处
      u8g2.print("H:");  //输出内容
      u8g2.setCursor(,);    //设置光标处
      u8g2.print("T:");  //输出内容
   } while ( u8g2.nextPage() );

   Serial.println("\n");

 int chk = DHT11.read(DHT11PIN);

 Serial.print("Read sensor: ");
 switch (chk)
 {
 case DHTLIB_OK:
 Serial.println("OK");
 break;
 case DHTLIB_ERROR_CHECKSUM:
 Serial.println("Checksum error");
 break;
 case DHTLIB_ERROR_TIMEOUT:
 Serial.println("Time out error");
 break;
 default:
 Serial.println("Unknown error");
 break;
 }

 Serial.print("Humidity (%): ");
 Serial.println((float)DHT11.humidity, );

 Serial.print("Temperature (oC): ");
 Serial.println((float)DHT11.temperature, );

 Serial.print("Temperature (oF): ");
 Serial.println(Fahrenheit(DHT11.temperature), );

 Serial.print("Temperature (K): ");
 Serial.println(Kelvin(DHT11.temperature), );

 Serial.print("Dew Point (oC): ");
 Serial.println(dewPoint(DHT11.temperature, DHT11.humidity));

 Serial.print("Dew PointFast (oC): ");
 Serial.println(dewPointFast(DHT11.temperature, DHT11.humidity));
 do {
      u8g2.setFont(u8g2_font_5x7_tr); //设置字体
      u8g2.setCursor(,);    //设置光标处
      u8g2.print((float)DHT11.humidity);  //输出内容
      u8g2.setCursor(,);    //设置光标处
      u8g2.print((float)DHT11.temperature);  //输出内容
   } while ( u8g2.nextPage() );
 delay();
 }

显示屏买了两次才发现4线的最好用，因为利用的IO口比较少，节省资源易操作。