ColdFire/68K Microcontrollers and Processors中的主题 MCF52210 USB Question

MCF52210 USB Question

junkers13 — Wed, 03 Sep 2008 09:26:41 GMT

Hi I just have a quick question. Is it possible to communicate through USB from a PC to the microprocessor. Say I wanted to send text through hyper terminal using USB, is it possible?

Thanks,

Re: MCF52210 USB Question

RichTestardi — Wed, 03 Sep 2008 21:46:56 GMT

> Say I wanted to send text through hyper terminal using USB, is it possible?

I have a driver that does just that -- it emulates a USB FTDI serial port, and the PC drivers automatically load from microsoft.com so you can talk to the MCU. It also has terminal line editing and a small history buffer. You can see the source code here:

http://www.cpustick.com/downloads.htm

You'll need the low level usb driver and the upper level ftdi driver. I'm eventually going to post a full project with dual-mode (host/device) USB functionality, but for now the individual files are there. I'm happy to help you get the sources running if you want to e-mail rich@testardi.com.

-- Rich

Re: MCF52210 USB Question

RichTestardi — Thu, 04 Sep 2008 12:19:01 GMT

And just to follow up, I posted an example skeleton project (skeleton.zip) on the webpage above which runs an FTDI serial port and simple command line interface on the M52221DEMO board, along with built-in administrative commands to perform flash cloning over ezport to a target board as well as S19 file firmware upgrading over the USB. If you run it and connect with HyperTerminal and press <Enter>, you'll see:

for more information:
help about
help clone
> _