I am a newbie to PSoC5.

Presently I would like to program the PSoC5 as a simple I/O card, and to communicate with Visual Basic thru USB port.

Basically the PSoC5 chip will function as an I/O card.

For eg, when I want to use P0(0) as an output port to control the coil of a relay, the VB GUI will communicate with the PSoC5 chip thru the USB port of the CPU, and then the GUI will send a stream of data to the PSoC5 to ask the PSoC5 to output a high voltage level from P0(0) port.

In this case, I need to write a VB source code and also a PSoC5 source code. 

I need help on how to start to write the PSoC5 source code. Can anybody advise?

Thanks in advance.  

To make things easier, I would start with USBUART in PSoC5. This will reduce the amount of VB-programming, you may use a simple terminal-pprogram to access your PSoC-board.

On the PSoC-side you MUST use C as programming language. Together with the PSoC Creator 2.0 there is a free Gnu C-compiler for the ARM-core. Many examples are just a mouse-click away.

If you din't already got one, I would suggest to get a Kit-001 which is VERY versatile. Look here at Cypress's webside for a description.

Happy coding

Bob 

The first thing you should be doing is to get a PSoC code running which can toggle a Pin state. Then have an external control to control this Pin state. May be set the Pin if the switch is pressed and likewise. Then bring in the USB part. You can access any USB device including PSoC from a VB .NET application. You can find help on how to develop your VB application on web. However in order to access the USB device, Cypress provides a standard DLL CyUSB.dll. It is a part of SUITE USB, which can be downloaded here, http://www.cypress.com/?rID=34870. I would suggest you to first get started with PSoC5 and then move to VB and USB portion.

 You can get started with PSoC by visiting this page, http://www.cypress.com/?id=2233&tabID=38413

Since youre getting started with PSoC,even I'd suggest you use the UART or USBUART.It will make PC side coding much easier.Note that this will require you to install USBUART drivers.

Find the example project in PSoC creator by right clicking on the USB UART block,and clicking 'Find Example Project'.

USB HID is better,but then PC side coding is something that might be intimidating at first,compared to coding for USB UART.

All the best!

 I will have to agree with kmmankad.

AN2298 is for PSoC1 but its VB6 code is a good example to directly interface to the USB HID.

Dear all,

Thanks for all your suggestions.

I like this topic and learn something i need  from the discuss!