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G6EJD / ESP32-e-Paper-Weather-Display

An ESP32 and 2.9", 4.2" or 7.5" ePaper Display reads Weather Underground data via their API and then displays the weather
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HTTP error code is not displayed #184

Closed nickGermi closed 2 years ago

nickGermi commented 2 years ago

In common.h file

under bool obtain_wx_data(WiFiClient& client, const String& RequestType) { function you have Serial.printf("connection failed, error: %s", http.errorToString(httpCode).c_str());

For some reason it would not print the error code for me, replacing that with Serial.println(httpCode); did print the error code properly which in my case was error: 400, which turns out, if your city name has a space in it (and I'm guessing that's large percentage of city names), HTTP request fails, you must use + or %20 instead of space in your city name so that HTTP request can succeed, doing so however makes the e-paper dashboard to also show the + sign in city name (not tested with %20). I guess you need to URL encode the uri to prevent this issue.

Another issue I encountered and it was very hard to find the reason was that 3 Color 7.5inch waveshare display is not supported by this application or U8g2_for_Adafruit_GFX.h module, because of insufficient memory in ESP32, I guess a mention of that would be nice.

G6EJD commented 2 years ago

Your display is supported by the GxEPD library and I believe I have included an example to drive that. For city/locations it’s better to use the OWM location number or Lat/Lon, but yes the use of %20 will work although for display purposes would need a replacewith %20 with “ “