TinyGSM instead of Wi-FI about microocpp

[ziyadtarek7]

@matth-x
I was able to get it working, now I will look into getting multiple network interfaces (wifi, ethernet and gsm) working simultaneously so that I'm able to switch to the most stable interface.

Should I share what I have modified to get it working here? In case anyone else faced the same issue

[matth-x]

Oh cool!

It would be incredibly useful to share the code online, because 4G connectivity is discussed a lot here.

I assume you've forked arduinoWebSockets? The maintainer of that project is very open to contributions, so if you find the time to add the TinyGSM support there, then anybody can use it with MicroOcpp out of the box. But that needs time, just sharing the code here would already be great.

[ziyadtarek7]

Hello,
This my modifications that got MicroOCPP working with SIM800 module instead of WiFi

https://github.com/ziyadtarek7/Using-MicroOCPP-with-SIM800-Module/tree/main

[Avi241]

This really worked out of the box @ziyadtarek7 . Thank you so much for the help. Also I am looking towards making TinyGSM to make it compatible with SIMCOM A7672s 4G GSM module as I want my system to be compatible with 4G network. If you have any idea how to achieve this it will be helpful or else even I will keep on posting my progress for 4G module.

[matth-x]

Hi @ziyadtarek7,

I believe that TinyGSM implements the Arduino Client interface. Since arduinoWebSockets is programmed against WiFiClient (also implementing Arduino Client) there's a good chance that you can replace all references to WiFiClient with TinyGSM.

There's been some discussions about this in this issue section. A second approach would be to look for another WebSockets library which already brings built-in support for the SIM800L modem and then to make an adapter around it that suits the MicroOcpp Connection interface. That approach works for sure, but is a little bit more work than modifying the existing WebSocket integration.

For your reference, here are other issues discussing this matter:
#188
#90
#107
#219

[Avi241]

Hey @ziyadtarek7 . It was really great that you get it working even I was trying something similar with A7672S GSM 4G LTE module. It will be really helpful if you can share your work or guide me for the same. Thanks

[ziyadtarek7]

Hey @ziyadtarek7 . It was really great that you get it working even I was trying something similar with A7672S GSM 4G LTE module. It will be really helpful if you can share your work or guide me for the same. Thanks

Hello @Avi241, I will share all my work on this topic, hopefully, this weekend (Thursday or Friday)

That's what I was able to get working:

• OCPP over tinyGSM (Sim800)
• Switching between WiFi and GSM during runtime

I had a problem with getting secure websockets working on tinyGSM ( using SSL) so for now I have removed this part

[Avi241]

Thank you so much @ziyadtarek7 . I will look into it and let you know

[ziyadtarek7]

This really worked out of the box @ziyadtarek7 . Thank you so much for the help. Also I am looking towards making TinyGSM to make it compatible with SIMCOM A7672s 4G GSM module as I want my system to be compatible with 4G network. If you have any idea how to achieve this it will be helpful or else even I will keep on posting my progress for 4G module.

Unfortunately I have no experience with that module, but if it has an AT commands interface maybe you could edit the commands sent from tinyGSM to match those of the module