Transfer data (in file) between PC and nrf52840-mdk-usb-dongle over USB CDC

RE: Transfer data (in file) between PC and nrf52840-mdk-usb-dongle over USB CDC

Simonr — Mon, 20 Apr 2020 05:50:54 GMT

Thank you for sharing your solution with the community!

Have a good one!

Simon

RE: Transfer data (in file) between PC and nrf52840-mdk-usb-dongle over USB CDC

Tashkent — Sat, 18 Apr 2020 03:12:29 GMT

Hi Simonr,

Thanks for your help! I have solved this problem in another way. I replace the putty with pyserial, a python serial port library.

Here are the steps:

1. Load an USB CDC program to the dongle, e.g., <SDK>/examples/peripheral/cli. The program can be adapted to dongle by following this excellent tutorial.

2. Install pyserial on PC.

3. Create a file named INPUT on PC, and write some words to the file.

4. Run the following python program:

import serial

ser=serial.Serial("/dev/ttyS8",115200,timeout=0.1)  # Open the port

fin = open("./INPUT", "r")
fout = open("./OUTPUT", "w")

s = fin.read()										# Read data from INPUT

ser.write("print all "+"\'"+s+"\'"+"\r\n")			# Send data to the port
s = ser.readlines()									# Receive data from the port

fout.write(str(s))									# Write the received data to OUTPUT

fin.close()
fout.close()

ser.close()											# Close the port

RE: Transfer data (in file) between PC and nrf52840-mdk-usb-dongle over USB CDC

Simonr — Wed, 08 Apr 2020 11:59:46 GMT

Yes, I think this should be possible. You can check out the nRF52 BLE image transfer demo to see an example where the nRF52 handles and transfers files. You should be able to modify this to handle your desired file type and to transfer over USB instead of BLE. I am not sure what type of files you have in mind though, and this has not been tested as far as I know, so I can't guarantee that it will work.

Best regards,

Simon