How to send file over serial port in Windows Command Prompt

Question

I'm trying to send files over a COM port, but failed every time.

First, I configure a serial on each machine like this:

MODE COMx:115200,N,8

where x is the COM port number.

After this I'm trying to do:

COPY file.zip COM1: /B

and the reverse on the receiving PC.

In most cases I've gotten a broken archive. But last tries gave me nothing at all - first PC says that the file was sent, but the second is just waiting for data. Is there somebody who knows how to solve this?

Answer 1

This works for me to send a binary file to an Arduino :

mode COM21 BAUD=115200 PARITY=n DATA=8
copy yourfile.txt \\.\COM21

Notice the \\.\ which is mandatory for port numbers >= 10, and can be used too for port numbers 1-9.

Answer 2

You need to specify /B for binary file after the .zip file (or whatever else it is) as well as at the end of the command line. e.g. COPY ABinary.File /B COM1 /B otherwise it will stop at the first non-text ASCII character.

Try using Hyperterminal at the receiving end and Transfer > Capture Text