Wiring FPGA pins that are bi-directional

[Rob Holmes]

Apologies if this question is obvious, but i'm laying out my SRAM controller and was about to wire it up and realized that i don't know how to wire a set of FPGA pins that can be both read from and written to in icestudio

Ive attached a screenshot, the bank of pins circled in green are attached to the SRAM's io pins and so need to be both read from and written to at different points in time.

I cant have duplicate pins, so cannot create an output block with the same pins.

How do i manage this?

[charli va]

Hi! you could use "inOut" ports in your blocks, when you double click to open de in, out and parameters definition of a block or a code block, in the bottom you could see this input fields:

The definition is like the in or output ports:

inout left and inout right works in the same way , are the same (bidirectional ports), the only reason for this two inputs is in wich side of the graphic block appears in Icestudio .

If i don't explain well, please tell me!

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[Rob Holmes]

Im probably misunderstanding but i dont have those options..... I only have input or output ...

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[charli va]

In the input and outputs you should show InOut pin checkbox:

You probably use the stable release or old wip. Please donwload the latest from (https://downloads.icestudio.io).

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[Rob Holmes]

Ah, ill get the latest WIP, however none of the download links work for me at the moment.

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[Democrito]

Carlos, la web de descarga no funciona, sale esto:

[charli va]

Sorry! github quotas, i'm telling you in few minutes!

El mar, 12 mar 2024 a las 16:38, Democrito (<spo...@gmail.com>) escribió:

Carlos, la web de descarga no funciona, sale esto:

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[charli va]

Try again! 

[Rob Holmes]

Working now, thankyou!!!

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