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Hello
I am using the psoc UC that I have attached picture of.
My quistion. Can I use P1.1 and P1.0 as analog inputs? Right now I have set them up to be analog inputs only to check if the port is high or not (checking for a button to be pushed). Though it seems that it fails now and then, and I cant find a failure in the code, and worked long time with it. Is it wrong of me to check these ports for high or low using: "if (PRT1DR & pin1{}"?
Select: globalinodd
Drive: high z
Thanks in advance
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PSoC 1
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"Normally" you would set up a button input as follows -
This is a button ftom pin to Vdd, if you want button to pull low then
change Drive to Pull Up, button connected from pin to Vss.
If you are doing read m,odify writes to a port then you must use shadow
registers -
http://www.cypress.com/?rID=2900 AN2094 - PSoC® 1 - Getting Started with GPIO
https://www.youtube.com/watch?v=tei6q5M3C0g Shadow Registers
http://www.cypress.com/?rID=39497 Shadow Registers
Also for buttons do not forget to debounce them -
www.dropbox.com/s/r8vfqea5fhiuzw1/Debounce.zip
Regards, Dana.