# Cypress USB driver

**URL:** <https://discourse.myriadrf.org/t/cypress-usb-driver/162>\
**Category:** Reference Development Kit\
**Created:** [24 March 2015 08:23 UTC](https://discourse.myriadrf.org/t/cypress-usb-driver/162 "2015-03-24T08:23:43Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![ritchy](https://avatars.discourse-cdn.com/v4/letter/r/b38774/32.png) [@ritchy](https://discourse.myriadrf.org/u/ritchy)\
**Post date:** [24 March 2015 08:23 UTC](https://discourse.myriadrf.org/t/cypress-usb-driver/162/1 "2015-03-24T08:23:43Z")

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Hi,  
After the cypress driver installation, in the device manager i can see “Cypress FX2LP No EEPROM Device”.  
Is it normal ?  
PS : My OS is windows 7 64bits.

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**Author:** ![RicardasVadoklis](https://avatars.discourse-cdn.com/v4/letter/r/d9b06d/32.png) [@RicardasVadoklis](https://discourse.myriadrf.org/u/RicardasVadoklis)\
**Post date:** [25 March 2015 10:39 UTC](https://discourse.myriadrf.org/t/cypress-usb-driver/162/2 "2015-03-25T10:39:10Z")

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Hi ritchy,

What board are you using?

Rich

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**Author:** ![ritchy](https://avatars.discourse-cdn.com/v4/letter/r/b38774/32.png) [@ritchy](https://discourse.myriadrf.org/u/ritchy)\
**Post date:** [25 March 2015 13:47 UTC](https://discourse.myriadrf.org/t/cypress-usb-driver/162/3 "2015-03-25T13:47:38Z")

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Digital Interface V1.0

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**Author:** ![RicardasVadoklis](https://avatars.discourse-cdn.com/v4/letter/r/d9b06d/32.png) [@RicardasVadoklis](https://discourse.myriadrf.org/u/RicardasVadoklis)\
**Post date:** [26 March 2015 11:27 UTC](https://discourse.myriadrf.org/t/cypress-usb-driver/162/4 "2015-03-26T11:27:41Z")

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Hey,

Have you checked de0nao repository for the necessary files:

> **[myriadrf/reference-development-kit](https://github.com/myriadrf/reference-development-kit/tree/master/de0nano-interface)**
>
> The Myriad-RF Reference Hardware design files and firmware - myriadrf/reference-development-kit

Rich

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**Author:** ![ritchy](https://avatars.discourse-cdn.com/v4/letter/r/b38774/32.png) [@ritchy](https://discourse.myriadrf.org/u/ritchy)\
**Post date:** [27 March 2015 14:00 UTC](https://discourse.myriadrf.org/t/cypress-usb-driver/162/5 "2015-03-27T14:00:05Z")

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thanks for your reply.  
Well, in fact i have many questions, and please tell me if i m wrong.

1. If i don’t use FPGA, i should be able to test LMS6002 registers? Because, there is a bug when i launch “test registers”. Sometimes, i must disconnect usb cable cause the program won’t respond after launching else it says “Fail” on all test. What s going on?  
Nothing happened on SCLK pin of the I²C to SPI chip.

2. What s the exact purpose of FPGA? I see there are spi master, i²C slave to control lms registers but if main board does that, why using the FPGA to do the same?

I 'm sorry to ask stupid questions. : )

cheers