nrf52840, How do apply ymodem to NUS?

[tobaro4]

I want to transfer files to uart using ymodem protcol.

For example, when nRF52840 receives a file through BLE,

it tries to send the file back to the device connected to uart through NUS.

I want to know a little about the above. Please.

Thank you.

[Einar Thorsrud]

Hi,

Since YMODEM is a layer on top of UART it would work in the same way with NUS as it would actual UART. Nordic does not have any YMODEM protocol implementation though, nor experience with it, so you would have to implement this yourself. 

[tobaro4]

Hi,

Thanks for your kind answer.
Can I convert the data of the file received through BLE to ymodem protocol format and transfer the converted data back to uart through NUS? Is that right?

[Einar Thorsrud]

Hi,

tobaro4 said:

Can I convert the data of the file received through BLE to ymodem protocol format and transfer the converted data back to uart through NUS? Is that right?

I would assume so. But as mentioned I do not have any experience with YMODEM, so I cannot promise anything.

Just out of curiosity, in what type of application does it make sense to use YMODEM over BLE?