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UART Pins do not function as GPIO | Cypress Semiconductor

UART Pins do not function as GPIO

Summary: 1 Reply, Latest post by andrew.ong_1675156 on 23 Sep 2016 03:10 PM PDT
Verified Answers: 1
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andrew.ong_1675156's picture
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10 posts

On the PSoC5 CY8C5888LTI-LP097, there are pins marked UART on 12_6 and 12_7. When I configured these to be regular digital input pins down pull-down resistors, one pin was permanently HIGH and one was permanently LOW. 

I have a UART in my project, but it's TX only and I connected it to 1_7, not 12_6. 

I didn't read anything in the app notes about UART pins.  I'm using the pins marked I2C and they work fine. 

andrew.ong_1675156's picture
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10 posts

I solved my problem. The KitProg programmer that is connected to my CY8C5888LTI-LP097 had an active UART. I removed the zero-ohm resistors that connected them. 

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