ESP32-e-Paper-Weather-Display

重新排版并改为中文显示，增加自动配网，切换预报类型，根据IP定位。仅修改了Waveshare 2.13寸 (TTGO T5)代码，其他开发板可自行修改。

依赖库

ArduinoJson

Adafruit BusIO Adafruit GFX Library GxEPD2 U8g2_for_Adafruit_GFX

编译

可使用Ardiuno或者PlatformIO开发，在这里获得天气服务的API密钥，填入src/own_credentials.h的 YOUR_API_KEY位置。

配网

开发板通电，此时绿灯闪烁进入配网状态，持续一分钟
微信关注“乐鑫信息科技”官方公众号，点击菜单商铺，选择AirKiss设备，输入当前WiFi的网络密码
手机连接开发板完成配网，绿灯快闪，然后常亮。显示根据IP地址定位地区的天气。

运行

联网完成后，绿灯熄灭，进入休眠模式；每半小时唤醒一次更新天气和预报；未配网时不自动唤醒。可以把蓝色电源灯焊掉进一步省电。
休眠模式时短按左侧按钮切换3天/12小时预报，绿灯短暂亮起后熄灭继续休眠，本操作不联网。
休眠模式时长按左侧按钮重新配网。

An ESP32 and an ePaper Display reads Open Weather Map and displays the weather

For standalone use, download the ZIP file to your desktop.

Go to Sketch > Include Library... > Add .ZIP Library... Then, choose the ZIP file.

After inclusion, Go to File, Examples and scroll down to 'ESP32-e-paperWeather-display' and choose your version/screen size. Make sure to come back to this dialog from time to time to keep each library up to date. Also make sure that you only have one version of each of the libraries installed.

Also see: https://www.arduino.cc/en/Guide/Libraries#toc4

Arduino JSON (v6 or above) by Benoît Blanchon

Download the software to your Arduino's library directory.

From the examples, choose depending on your module either
- Waveshare_1_54
- Waveshare_2_13
- Waveshare_2_7
- Waveshare_2_9
- Waveshare_4_2
- Waveshare_7_5
- Waveshare_7_5_T7 (newer 800x480 version of the older 640x384)
Code requires GxEPD2 library
- which needs [Adafruit_GFX](https://github.com/adafruit/Adafruit-GFX-Library
- an also requires U8g2_for_Adafruit_GFX
Obtain your OWM API key - it's free
Edit the owm_credentials.h file in the IDE (TAB at top of IDE) and change your Language, Country, choose your units Metric or Imperial and be sure to find a valid weather station location on OpenWeatherMap, if your display has all blank values your location does not exist!
If your are using the older style Waveshare HAT then you need to use:

**display.init(); //for older Waveshare HAT's

In the InitialiseDisplay() function, comment out the variant as required

Save your files.

NOTE: See schematic for the wiring diagram, all displays are wired the same, so wire a 7.5" the same as a 4.2", 2.9" or 1.54" display! Both 2.13" TTGO T5 and 2.7" T5S boards come pre-wired.

The Battery monitor assumes the use of a Lolin D32 board which uses GPIO-35 as an ADC input, also it has an on-board 100K+100K voltage divider directly connected to the Battery terminals. On other boards, you will need to change the analogRead(35) statement to your board e.g. (39) and attach a voltage divider to the battery terminals. The TTGO T5 and T5S boards already contain the resistor divider on the correct pin.

Compile and upload the code - Enjoy!

7.5" 800x480 E-Paper Layout