Android App for External MCU

[dc]

Hi,

I want to OTA firmware upgrade of STM32 (External MCU) using nRF51 through Android App on BLE. STM32 and nRF51 communicate on UART.

Please any one suggests how to use nRF connect or Master Control Panel for that. please provide steps if available.

As per my knowledge I just need to browse STM32 bin file. Android app detect that file and divided that file into 20 bytes of multiple packets and send one by one. I want this communication with ACK. Android app sending second packet only after getting first packet ACK from Device. like that.

I need android app that do it. is it possible with nRF connect or Master Control Panel? or Do i need to make custom android app?

[FormerMember]

Unfortunately, we don't have an app that do exactly what you want. Perhaps you can use the nRF Toolbox --> nRF UART source code as a starting point?

[dc]

Hi,

Thanks for reply!!

is it possible to pass file and nRF Toolbox convert into multiple packets(20 bytes per packet)? OR do I need to create manually one by one packets?

[FormerMember]

Unfortunately, I don't think we have any apps that takes a file as input and then the file to bytes..

[dc]

I think we make our custom Android app that is only solution.