I want an ESP32 with two DS18B20 via DS2482 (I2C) to measure the temperature and send an alarm via WhatsApp. I tested sending messages and it works, but it doesn't work together with temperature measurement. The network settings are identical. I get an error message: "HTTP response code: -1"
Why doesn't it work together with measurement and what does the code -1 mean?
Thanks in advance.
"-1" is not an HTTP response... as seen here...
Poking around the internet, something about two items called HTTPClient and HttpClient - one refuses to accept the input intended for the other.
Thank you for your reply. I thought the problem was because I also have AsyncWebServer in the program, but it doesn't work even when I delete all the code except setting up the network and sending the message. I set fixed settings for the network. Is there a problem? When I connect to a network without default settings, sending messages works. Maybe I'm wrong with the PrimaryDNS and SecondaryDNS settings?
Apparently I chose the wrong DNS servers and that's why sending messages didn't work. With PrimaryDNS 8.8.8.8 and SecondaryDNS 8.8.4.4 works fine.
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