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athulbalanea

Basys 2 - Spartan 3e

Question

Hi,

 

I need help to initialise and implement an inout port in BASYS 2(Spartan 3E) FPGA board. I tried using IOBUF and assigned that port to B6 or A9 or C6.I couldn't get the result. Without using the IOBUF, i am getting the desired signal pattern as output but in milli volt range. And i'm not sure whether i able to recive or not with out using the IOBUF since I could not test it..

 

I want to implement the I2C protocol, so the sda line should be INOUT, which I cant figure out...Should I use any specific PIn in Pmods of Basys 2 as Inout port....  Please help me with this...

 

Thanks in Advance

Athul

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Well that is the correct constraint for a pin on JC. Are you sure you are measuring it correctly? What HDL code are you using to test the pin with?

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