RS-232/UART Hardware fix for CY8CKIT-001/030/050

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Anonymous
Not applicable

In the following Kits :

   

CY8CKIT-001
CY8CKIT-030
CYC8KIT-050
 

   

There is a problem with Hardware Handshaking in that the CTS/RTS pins are swapped on the development kits.
This is a hardware/PCB error on the circuit boards and can only be fixed by a wiring change.

There are two workarounds to this problem :

   

1) Don't use hardware handshaking, select software handshaking (3 wire protocol) only.

2) Wire a DB-9 Female to DB-9 Male adaptor plug with the following pinout :

   

2 -> 2
2 -> 3
7 -> 8
8 -> 7

   

regards,

   

Tom Moxon
www.moxon.com

   

www.westmarkco.com

   

 

   



 

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Anonymous
Not applicable

Correction: Only the CY8CKIT-001 has this error. The CY8CKIT-030/050 boards have been corrected.

   

(I was looking at an older schematic....)

   

 

   

thanks,
Tom Moxon

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Anonymous
Not applicable

 I'm a bit annoyed that I just spent several hours troublshooting my project when the problem is actually in the dev kit circuit board.  Why isn't this little "note" in the knowledge base??  And why do you have a typo in your fix (2 to 2 and 2 to 3)????  This should at the very least be noted on the main dev kit page.  I'm sick of having to sort through the thousands of forum posts for the "oh, by the way"s that cost me hours or even days of lost time.

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Anonymous
Not applicable

@PeterT

   

I'm just the messanger here, so maybe we can have a ceasefire....

   

You are correct, Cypress should put that in the knowledgebase

   

(I don't work for Cypress - I'm just another user here...)

   

Also, unlike PSoCDeveloper, there is no "Edit" function on posts here,

   

so if you make a typo, you are stuck with it...

   

So I will correct that here :

   

There is a problem with Hardware Handshaking in that the CTS/RTS pins are swapped on the CY8CKIT-001
kit. This is a hardware/PCB error on the circuit boards and can only be fixed by a wiring change.

There are two workarounds to this problem :

   

1) Don't use hardware handshaking, select software handshaking (3 wire protocol) only.

2) Wire a DB-9 Female to DB-9 Male adaptor plug with the following pinout :

   

2 -> 3
3 -> 2
7 -> 8
8 -> 7

   

regards,

   

Tom Moxon
http://www.patternagents.com

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Anonymous
Not applicable

 My appologies.  I thought, for some reason, you were representing Cypress.  Which means that Cypress is even more negligent than I thought.  Thank you for posting about the problem.

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ETRO_SSN583
Level 9
Level 9
250 likes received 100 sign-ins 5 likes given

If you file a case pointing to this thread tool team will most likely update release

   

notes. Just a thought.

   

 

   

     

   

To create a technical case at Cypress -

   

 

   

www.cypress.com

   

“Support”

   

“Technical Support”

   

“Create a Case”

   

 

   

You have to be registered on Cypress web site first.

   

 

   

Regards, Dana.

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