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Observer
Observer
243 Views
Registered: ‎11-28-2018

I2C GPIO expander

Hi 

 

  Looking for VHDL source code (or IP block) of simple I2C GPIO expander. 

  Please advice.

BR,

Mark.

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6 Replies
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Teacher
Teacher
219 Views
Registered: ‎07-09-2009

If its just GPIO, then just search for "VHDL I2C slave gpio",

there are plenty on google.
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Observer
Observer
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Registered: ‎11-28-2018

Les say it even more simple than that - need read / write for slave I2C. Didn't find anything suitable from Xilinx (can't use 3-rd party design from unknown sourse)

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Teacher
Teacher
160 Views
Registered: ‎07-09-2009

you say you did not find anything sutable ,

   may be a way forward is for us to understna dyou rparticular requirments then,

If you can tell us which have you looked at , and why are they not sutable, then may be we can advise you.

 

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Observer
Observer
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Registered: ‎11-28-2018

Looked into  Xilinx low speed perepherials database - its has only I2C master bus controller, no I2C slave bus controller, although it is a standart protocol.

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Teacher
Teacher
146 Views
Registered: ‎07-09-2009

Ok, try the google search I suggested, see if any of those are of use, and get back to use and we can advise.

 

 

 

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Observer
Observer
118 Views
Registered: ‎11-28-2018

For example looking into https://github.com/oetr/FPGA-I2C-Slave it lacks secondary address feature.

Need a simple I2C slave, but with complete.

 

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