Serial file transfers to/from FreeRTOS FAT filesystem on a NXP K24F based board.

pwfurey wrote on Thursday, January 26, 2017:

My project uses the following:
1.) A NXP MK24FN1M0VLL12 based board.
2.) Kinetis Design Studio IDE v3.2 and Kinetis Software Development Kit (SDK_2.0_MK24FN1M0xxx12)
3.) FreeRTOS v8.2.3

My board doesn’t have an ethernet port so I am limited to transfering files to/from the FreeRTOS FAT filesystem via a serial console. I’ve searched both the NXP forums and the FreeRTOS forum and other places on the best way to do this without finding much on the topic. To date, the best option I’ve found is to port the Zmodem protocol code lrzsz-0.12.20 from https://ohse.de/uwe/software/lrzsz.html. This looks like a somewhat painful approach to solving my file transfer problem. Does anyone know of a better approach to transferring files?
Much thanks in advance,
Peter

rtel wrote on Friday, January 27, 2017:

Its a long time since I’ve done something like that, but as I recall
there were a few basic protocols around. You mention zmodem already,
but also xmodem (don’t remember what the difference is). You only
really need to use one of those protocols if you don’t control the
software that is sending though. For example, if you are using an
off-the-shelf terminal to send the file then you will have to comply
with whatever protocol the terminal uses whereas if you are writing the
software that sends the file you can use whatever protocol you like.