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SDA and SCL pins

The IO Pi Plus is a 32 channel MCP23017 GPIO expander for the Raspberry Pi

15/02/2016

Posted by:
aliva

aliva Avatar

Hello!
I have the board running on the pi now i need to setup a hardware clock to the pi and it use the SDA- SCL pins to work which ones on the IO PLUS are the SDA and SCL? thanks!

15/02/2016

Posted by:
andrew

andrew Avatar

Is Solution

Hello

The IO Pi Plus does not have separate I2C pins on the board so you will need to use the SDA and SCL pins on the GPIO port. The photo below shows which two pins to use. The IO Pi Plus includes pull-up resistors so you will not need to add those to your hardware clock, but if it already has pull-up resistors built in then it should still work ok. forum image

15/02/2016

Posted by:
aliva

aliva Avatar

OK!

15/02/2016

Posted by:
aliva

aliva Avatar

thanks! i wil try it.

16/02/2016

Posted by:
aliva

aliva Avatar

OK! is working like charm thanks!
Also i'm trying to run the C examples but it doesn't compile i got a bunch og
undefined reference to 'IOPI_init'
i'm on a RPI2 any ideas ?
thanks

16/02/2016

Posted by:
aliva

aliva Avatar

i figurate out!
Thank anyways.

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