_florent_ changed the topic of #litex to: LiteX FPGA SoC builder and Cores / Github : https://github.com/enjoy-digital, https://github.com/litex-hub / Logs: https://freenode.irclog.whitequark.org/litex
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<DurandA> Hi. I am looking for some help to use CSRs (not CSRStatus or CSRStorage). Specifically, I try to do a self-resetting CSR. Currently, the CPU/remote has to send a pulse to an "enable" CSRStorage.
<DurandA> I didn't find something like that in the codebase. Thanks for your ideas.
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<nickoe> zyp: Mm, is this the correct to create a nullsink with the stream endpoint? https://pastebin.com/raw/5jYVhtjc
<zyp> yes
<zyp> and a nullsource would equivalently have valid always high
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<nickoe> mm, but then I wonder why this does not appear to work :S
<nickoe> zyp: With this code https://pastebin.com/raw/p5UTedKw
<nickoe> so I just connected the dma to the nullsink
<nickoe> but why does the dma source ready signal go low?
<nickoe> oh, I also have the cdc in between, but it should still not do that all the time.
<zyp> self.comb += dma.source.connect(cdc.sink)
<zyp> self.comb += cdc.sink.connect(nullsink.sink)
<zyp> that should be cdc.source
<nickoe> Ohh, nice. I must be blind today.
<zyp> also, you might want to use a Pipeline() to hook this up
<zyp> Pipeline(dma, cdc, nullsink) is a bit more readable than what you've got now :)
<nickoe> I can't finde that, is that a litex thing or migen?
<zyp> it's in litex.soc.interconnect.stream
<zyp> like all other stream constructs
<nickoe> ok, I see it
<nickoe> not sure what was wrong with my search thing
<zyp> I suggest you have a read through that module, it's got a bunch of convenient building blocks
<nickoe> yeah, well, but not a hell lot of documentaiton :S So it is hard to find what "I didn't know I needed" when I don't know what they do. :D
<nickoe> but that do look more readable indeed.
<nickoe> But at least I am sorta getting the gang of understanding the internals with a glance
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<nickoe> zyp: Why does it appear that this storage is equal to 3? no matter what reset value I set it to?
<zyp> is it not hooked up to anything?
<nickoe> I just tried to disconnect it from the module..
<nickoe> to see if that changes maters
<nickoe> If(self.upsample_num.re,
<nickoe> Even if I remove any uses of it it is till just 3
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