NodeMCU简介

NodeMCU,是一个开源的物联网平台。它使用Lua脚本语言编程。该平台基于eLua开源项目,底层使用ESP8266 sdk 0.9.5版本。该平台使用了很多开源项目, 例如 lua-cjson, spiffs. NodeMCU包含了可以运行在esp8266Wi-FiSoC芯片之上的固件,以及基于ESP-12模组的硬件。ESP8266 是高性能无线 SOC，以最低成本提供最大实用性，为 WiFi 功能嵌入其他系统提供无限可能。

ESP8366特点

802.11 b/g/n 内置Tensilica L106 超低功耗 32 位微型 MCU，主频支持 80 MHz 和160 MHz，支持 RTOS 内置10 bit高精度ADC 内置TCP/IP协议栈内置TR 开关、balun、LNA、功率放大器和匹配网络内置PLL、稳压器和电源管理组件，802.11b 模式下+20 dBm的输出功率 A-MPDU 、 A-MSDU 的聚合和 0.4 s的保护间隔 WiFi @ 2.4 GHz，支持 WPA/WPA2 安全模式支持AT远程升级及云端OTA升级支持 STA/AP/STA+AP 工作模式支持 Smart Config 功能（包括 Android 和 iOS 设备） HSPI 、UART、I2C、I2S、IR Remote Control、PWM、GPIO 深度睡眠保持电流为 10 uA，关断电流小于 5 uA 2 ms 之内唤醒、连接并传递数据包待机状态消耗功率小于1.0 mW (DTIM3) 工作温度范围：-20℃- 85℃

驱动0.96寸OLED

准备工具

需要准备的工具有能上网的电脑、Arduino开发软件（需要自行安装u8g2环境）、0.96寸OLED、NodeMcu、杜邦线4根（VCC/GND SLC/SDA）SLC对应D1，SDA对应D2 图片取模地址：tools.clz.me，工具很多，这里推荐这个在线的

代码



#include <Arduino.h>

#include <U8g2lib.h>


#ifdef U8X8_HAVE_HW_SPI

#include <SPI.h>

#endif

#ifdef U8X8_HAVE_HW_I2C

#include <Wire.h>

#endif


U8G2_SSD1306_128X64_NONAME_F_HW_I2C u8g2(U8G2_R0, /* reset=*/ U8X8_PIN_NONE);//屏幕驱动


//width:55,height:55

const unsigned char col[] U8X8_PROGMEM= {0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0xff,0x00,0x00,0x00,0x00,0x00,0xc0,0xff,0x0f,0x00,0x00,0x00,0x00,0xf0,0xff,0x3f,0x00,0x00,0x00,0x00,0xf8,0xff,0x3f,0x00,0x00,0x00,0x00,0xfc,0xff,0x1f,0x00,0x00,0x00,0x00,0xfc,0xff,0x3f,0x00,0x00,0x00,0x00,0xfe,0xff,0x3f,0x00,0x00,0x00,0x00,0xff,0xff,0x7f,0x00,0x00,0x00,0x00,0xff,0xff,0x7f,0x00,0x00,0x00,0x00,0xff,0xff,0x7f,0x00,0x00,0x00,0x00,0xff,0xff,0x7f,0x00,0x00,0x00,0x00,0xff,0xff,0x7f,0x00,0x00,0x00,0x00,0xff,0xc3,0x7f,0x00,0x00,0x00,0x00,0x60,0x03,0x00,0x00,0x00,0x00,0x00,0x60,0x00,0x02,0x00,0x00,0x00,0x00,0x40,0x00,0x06,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x7f,0x00,0x00,0x00,0x00,0x00,0x00,0x3e,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0xf0,0xff,0x0f,0x00,0x00,0x00,0x00,0xf8,0xff,0x1f,0x00,0x00,0x00,0x00,0xfe,0xff,0x3f,0x00,0x00,0x00,0x80,0xff,0xff,0xff,0x01,0x00,0x00,0xf0,0xff,0xff,0xff,0x07,0x00,0x00,0xfc,0xff,0xff,0xff,0x1f,0x00,0x00,0xff,0xff,0xff,0xff,0x7f,0x00,0x80,0xff,0xff,0xff,0xff,0xff,0x00,0xe0,0xff,0xff,0xff,0xff,0xff,0x03,0xf0,0xff,0xff,0xff,0xff,0xff,0x07,0xf8,0xff,0xff,0xff,0xff,0xff,0x0f,0xf8,0xff,0xff,0xff,0xff,0xff,0x1f};

void setup(void) {

u8g2.begin();

u8g2.enableUTF8Print(); // UTF8

}


void loop(void) {

u8g2.setFont(u8g2_font_wqy13_t_gb2312); //设置字体

u8g2.setFontDirection(0); //设置字体方向

u8g2.clearBuffer(); // 清空显示设备内部缓冲区

u8g2.drawXBMP( 0 , 0 , 55 , 55 , col ); //55,55为图片尺寸，根据你的图片尺寸修改

u8g2.setCursor(60, 60);

u8g2.print("学识野路子"); //输出中文

u8g2.sendBuffer(); // 显示缓冲区内容

delay(1000);

}