On NuttX side run “rz” command to receive files:

nsh> rz
**B0900000000a87c
**B0800000000022d

On Linux side run:

$ stty 115200 cs8 -parenb -crtscts -F /dev/ttyACM0

$ sz –zmodem nuttx_logo.txt > /dev/ttyACM0 < /dev/ttyACM0

You will see:
Sending: nuttx_logo.txt
Bytes Sent: 1942 BPS:196

On NuttX side you can see the received file:

nsh> cd /tmp

nsh> ls/tmp:

nuttx_logo.txt

• BrainDamage