Hi any one knows were I can find documentation for...
# caraveli
Ivan Rodriguez
05/19/2021, 10:34 AMHi any one knows were I can find documentation for how to use the wishbone bus in the software part of caravel? in the example provide in the user project test is not very clear.
thanks
m
Matt Venn
05/19/2021, 1:33 PMHi Ivan
Matt Venn
05/19/2021, 1:33 PMI'm just trying to put an example together because a few people have asked
Matt Venn
05/19/2021, 1:34 PMwill post here when I get something working
Matt Venn
05/19/2021, 1:34 PMcurrently I can't work out why the strobe signal is never strobing inside the user project wrapper
Matt Venn
05/19/2021, 2:08 PM0x0300_0000 should have been 0x3000_0000 🤦
Matt Venn
05/19/2021, 2:25 PMok, here's a working demo: https://github.com/mattvenn/caravel_user_project/tree/wishbone-demo
Matt Venn
05/19/2021, 2:25 PMbasically, instantiate a wishbone client inside user_project_wrapper with base address 0x3000_0000
Matt Venn
05/19/2021, 2:25 PMand then in the firmware read and write to that memory addresse
Matt Venn
05/19/2021, 2:25 PMthe demo above provides an example client, firmware and testbench to show how this works
i
Ivan Rodriguez
05/19/2021, 2:45 PMGreat thanks a lot, this will be very useful for a lot of people.
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