Is MM8108 supported by mm-iot-esp32?
If yes, which interface is recommended for connection to the MCU?
The currently released mm-iot-esp32 package doesn’t have support for MM8108 included, but the next release will. That isn’t too far off 
Interface option is SPI to the ESP32s
@ajudge
Please note, that some ESP32s (e.g. S3, P4) support USB host mode. Currently, it may be used for cellular communication using esp_modem component. It would make sense if USB was supported also for MM8108 by mm-iot-esp32.
Btw, does the component fully integrate into IP stack of esp-idf? Can application layer networking components be used without modification (e.g. esp_http_client)?
Please note, that some ESP32s (e.g. S3, P4) support USB host mode. Currently, it may be used for cellular communication using esp_modem component. It would make sense if USB was supported also for MM8108 by mm-iot-esp32.
I see. We don’t have any plans currently to support USB on the mm-iot-sdk flavours but I’ll raise the request with the team.
Btw, does the component fully integrate into IP stack of esp-idf? Can application layer networking components be used without modification (e.g. esp_http_client)?
Currently the mm-iot-esp32 utilises a custom mmipal library for most of the examples included in the pack, but under the hood there is an lwip network interface which is capable of hooking into the ESP-IDF network stack.
Watch this space though, we have some improvements coming in this area which would make this more straightforward
1 Like