Sim7000 / Adruino Mega to Webhooks/Discord/etc.

quick update:
I made a section in my code I could trigger at will to disable/reenable data. The function basically looks like this (pretty much copied from initial setup code):

#if !defined(SIMCOM_3G) && !defined(SIMCOM_7500) && !defined(SIMCOM_7600)

   // Disable data just to make sure it was actually off so that we can turn it on

   if (!fona.enableGPRS(false)) Serial.println(F("Failed to disable data!"));



   int retryData = 0;

   // Turn on data

   while (!fona.enableGPRS(true)) {

     if (retryData > 3) {

       Serial.println(F("Failed to enable data."));

       break;

     }

     Serial.println(F("Failed to enable data, retrying..."));

     delay(2000); // Retry every 2s

     retryData++;

   }

   Serial.println(F("Enabled data!"));

 #endif

Note, I have it to break re-trying to connect data so that it doesn't get stuck in endless loop if it's never able to connect, which would break the rest of my code from even running, which I have it to do other things that don't need data or GPS to function...


Since last posting, nearly exactly 24 hours ago, I have left the device running on a newly uploaded code, still with the changes recommended from previous response:


My code to posting to webhook using original fona.postData("POST", URL, body)) code
and the code to post to adafruitio with mqtt using traditional MQTT code, with a fall back to fona.postData code (to adafruit specified webhook url)

The connection to MQTT still does not work on fresh upload/power on, nor after hours, and fallback to fona.postData code works initially, but breaks within 24 hours.
The connection to IFTTT webhook works initially, but breaks within 24 hours (just tried it before making this post)



Interesting caveat here:
As mentioned, just tested the Posting data before making this update, after almost 24 hours of the program running on fresh upload... The Post failed on all fronts after having it running this long. No MQTT, no adafruit webhook, no IFTTT webhook... Ok, so I triggered the data reset of the code. With nothing else done, and no reset or power cycling of the boards or devices, the WEBHOOK posts to both MQTT and IFTTT worked successfully. (Traditional MQTT still bricked, likely because of the SSL setting for some reason)

It seems to me now that there is some flaw/setting/issue that the data connection breaks for either the sim7000 board, or my ISP (hologram running me on Tmobile) after an undefined amount of idle time (within 24 hours tested), and cycling the data connection fixes this issue (at least for now lol).

So I still need to update the other library functions to use the SSL commands. The one that should work is fona.HTTP_connect(). Currently the SSL option for other functions like TCP and MQTT still try to verify certs. If you want, you could try replacing all the if statements checking if "SSL_FONA is true" in the .cpp file to the if statement in the HTTP_connect() function, which only runs the sslversion and SHSSL=1,"" commands.

I'm kind of weary to try changing anything atm, since I might have figured out the problem (being that the data connection seems to stop working after a certain amount of time (within 24 hours), and that disabling and re-enabling the data function seems to fix it. TBH, I don't think it was an issue with SSL or HTTPS, I am still sending to NORMAL http IFTTT URL, and if it really was an SSL issue, I don't see how I could even connect at all in the first place (besides some glitch). The only reason I was thinking it was an SSL issue was because I was still seemingly able to post through MQTT, but I think I might have been off on that.

After some more testing, I will give it a shot and report back, but I think what is solving my issue is just either having a code method I can call at will with triggers/or timers, to disable and re-enable data every so often.


The one thing I do know does have an affect with the SSL is setting it to 1 won't have a working MQTT system, whether with normal adafruit url and port, or with their specified SSL url and port.

Most of the code you have already should work fine with the new libraries. The main thing I would change in the old code is the "#include" at the top of course. You can now install the library directly from the Arduino IDE Library manager. For SIM7000A with SSL, see the comments under the code for "case '2'" in the LTE_Demo, where you can uncomment some things. Also remember to change "BOTLETICS_SSL" to 1 in the .h file.

SIM7000A or SIM7000G?

SIM7000A should work with SSL if you follow the comments in the LTE_Demo under case '2'. Please post a screenshot of your serial monitor.