I need to transfer files from a sco/unix system to a windows xp system and they are only connected via a digiboard serial connection. The terminal emulation software connects and runs a program but I The UNIX and Linux Forums. Using the SD library to retrieve information over a serial port. This example shows how to read a file from a SD card using the SD library and send it over the serial port. Please click here for more information on the SD library. Apr 24, 2014  Then there's the serial port program transfer issue on top of it. Now I'm thinking it might be best to get a replacement workstation that has a serial port and a parallel port, put VMWare Workstation on it and use a P2V'd version of the existing workstation for programming as well as program transfer.

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I am looking for a simple program that can send data down the serial to the PIC. I have used Putty with USB-UART converter on my laptop. I have made the PIC->PC communiation work which is frankly a trivial task.

The question is, how to do the opposite. I can't find any option in Putty to send data down the serial port. What alternative do I have? Is the only option to use custom application written in C++/C#? It is better that I be able to implement flow control (of any kind) so the PC could be told to pause sending the data.

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3 Answers

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PuTTY works well as a general terminal emulator but for work with embedded systems I prefer Realterm which has a lot of support for working with binary / hex. When sending a file you get the option to set a delay between each character, each line and can send the same file multiple times with a delay between each time:

So using that you could either add delays or implement flow control (which is set on a different tab). Another alternative to using flow control is to implement one of the fairly ancient protocols like XMODEM which are fairly simple and don't consume a lot of code space, if you have a little over 1k of RAM available then I've used this code and it works. ExtraPuTTY is a fork of PuTTY that adds XMODEM and a few other file transfer protocols.

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Transfer File Over Serial Port Windows

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Assuming you want to send a HEX or command file ..

See Is it possible to send the content of text file over PuTTY over serial port where a solution is given using PLink (PuTTY Link, I presume) which should be part of the PuTTY install.

It's hard to ask an original question!

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Under Terminal option, on Local echo: select Force ON

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You can try program called FastLynx.
http://download.cnet.com/FastLynx/3000-2248_4-10068284.html

Transfer Files Through Serial Port

If you are transferring full hard drive, then it might be faster (2-3x) to put your drive (A) into the computer(B) that is receiving the data as a SECONDARY or SLAVE drive. It will take you approx 5 minute to put drive in computer B, couple of reboots, and then you can migrate whole hard drive.
Because serial port is slow (max 192kbps), think 8GB USB2 drive (@ $10). USB2 transfers data @2MB/s.
But I would use a program called Roadkil's Unstoppable Copier to do data transfer: (1) it uses DMA, thus bypassing buffering (2) it validates 'packet' transferred by MD5 hash so that your data written is accurate.
But I prefer Primary-Secondary approach since you do not intervene once migration starts.
Can you believe that USB2 (A:B) cables cost $10, but USB2 (A:A) cable cost $40?
http://www.amazon.com/Belkin-Easy-Transfer-Cable-Windows/dp/B002PAR0AQ/ref=pd_cp_e_1

Busybox Tftp Put

but 1TB external HD cost $59 @ MicroCenter.com

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