USB to Serial (RS232) Circuit Troubleshooting (Hardware Fix)

I have a custom circuit board that plugs into a USB port and provides 10 Com Ports (RS232).? I am having intermittent problems where some of the com ports become non-responsive.?

I have a custom Windows XP application written in VB6? that opens all 10 com ports and receives and sends data to the respective com ports.? There are intermittent problems where some com ports become non responsive to my application.? Closing and re-opening the application will re-establish the com port.

I believe I have a hardware problem where the USB to Serial Chip resets intermittently.? When the chip resets, Windows "loses" the address that it previously had for that com port, and only by closing the problem port and then re-opening the port will the com port work again.?

The USB to Serial chip is the FT232R made by FTDI:? <[url removed, login to view]>?

I can provide a bitmap picture of the complete circuit board, or can send the board to USA or Canada for hands on testing.

Looking to solve the intermittent com port functionality.

## Deliverables

1) Complete and fully-functional working program(s) in executable form as well as complete source code of all work done.

2) Deliverables must be in ready-to-run condition, as follows? (depending on the nature? of the deliverables):

a)? For web sites or? other server-side deliverables intended to only ever exist in one place in the Buyer's environment--Deliverables must be installed by the Seller in ready-to-run condition in the Buyer's environment.

b) For all others including desktop software or software the buyer intends to distribute: A software? installation package that will install the software in ready-to-run condition on the platform(s) specified in this bid request.

3) All deliverables will be considered "work made for hire" under U.S. Copyright law. Buyer will receive exclusive and complete copyrights to all work purchased. (No GPL, GNU, 3rd party components, etc. unless all copyright ramifications are explained AND AGREED TO by the buyer on the site per the coder's Seller Legal Agreement).

## Platform

Windows XP Professional

Habilidades: Eletrônica, Engenharia, Microsoft, MySQL, PHP, Gestão de projetos, Arquitetura de software, Teste de Software, Área de trabalho do Windows

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Acerca do Empregador:
( 90 comentários ) Littleton, United States

ID do Projeto: #2980525

1 freelancer is bidding on average $213 for this job


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$212.5 USD in 30 dias
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