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Zload over TCP

 
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pdubinsky



Joined: 25 Nov 2005
Posts: 66
Location: South Carolina
Posted: 21 April 2010, 11:47 AM    Post subject: Zload over TCP Reply with quote
I've watched the recent discussion of wireless updates for the ZVM with some interest. Has anyone done updates over ethernet/TCP?

Paul
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stevech



Joined: 23 Feb 2006
Posts: 657
Posted: 21 April 2010, 18:58 PM    Post subject: Reply with quote
yes, some time ago I used a Lantronix WiPort serial to WiFi ethernet converter to do so. Virtual COM port on PC side. I think I also did it with a Moxa NPORT.
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pdubinsky



Joined: 25 Nov 2005
Posts: 66
Location: South Carolina
Posted: 21 April 2010, 19:20 PM    Post subject: Zload over TCP Reply with quote
Do I understand that the zload thought it was using a serial port? My ZX24 device uses a Wiznet RS232 - Ethernet converter to put the device on the network. I'm going to try putting another Wiznet on the box that has the zload and sure that I can get that to work.

What I'm looking for, however, is method for loading directly to the ip address w/o a converter at the zload end. I looked at the zload.dll and using that as a basis for a TCP capable zload is a bit daunting.

Thx,
Paul
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dkinzer
Site Admin


Joined: 03 Sep 2005
Posts: 2499
Location: Portland, OR
Posted: 23 April 2010, 14:47 PM    Post subject: Re: Zload over TCP Reply with quote
pdubinsky wrote:
Do I understand that the zload thought it was using a serial port?
Yes, a ethernet-to-serial converter was being used. This is similar in concept to using a USB-to-serial converter. In both cases, a special device driver is needed that provides a virtual comm port (VCP).

The zload code is written specifically to use a COMx port for communication with the ZX device. If you knew the correct protocol to use (probably UDP) and the format of the data packets it might be possible to eliminate the VCP and communicate with the endpoint device directly over the Ethernet connection.
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