Migration from ESP32-WROOM to ESP32-C3-MINI specifically BT Classic SPP

[brentsinger]

Hi, I have a simple BT classic SPP pass through project running on an ESP32 WROOM module. It is just a UART to/from a smartphone.

I need to move to the C3-MINI -> Will the SPP still work? Does the code need to change? Or are they the same binary?

I'm currently using PlatformIO and the Arduino framework.

My concern is that the newer BT hardware on the C3 won't support legacy protocols SPP/RFComm like the older hardware. Any insight would be a great help.

Thanks, Brent.

[ESP_Sprite]

C3 indeed does not support BT Classic, only BTLE.

[brentsinger]

Thanks for the quick response.

So would there be a SPP emulation project for the C3?

I am using serial terminal apps on Android, and I just need to maintain compatibility.

When I try this with Nordic NUS I need to write my own app as BLE Server so I can't reuse with older apps.

[brentsinger]

I have found that the ESP-IDF documentation for the C3 has Bluedroid with Classic SPP examples included in the documentation.

Ref: https://docs.espressif.com/projects/esp ... index.html

So I wonder if BT 5.0 on the C3 supports the SPP examples that are included in the ESP-IDF... ?

[ESP_krzychb]

Hi brentsinger,
Thank you for pointing this issue out.

So I wonder if BT 5.0 on the C3 supports the SPP examples that are included in the ESP-IDF... ?

As for the Classic Bluetooth examples, they are marked in the README.md as being for ESP32 only, e.g. "Supported Targets ESP32"
https://github.com/espressif/esp-idf/tr ... p_acceptor