00:00 <bjonnh> jevinskie[m]: oh good to know, thanks

00:09 <sajattack[m]> every wishbone read gives all f's

01:14 <jevinskie[m]> The bus doesn’t lock up though?

02:43 <sajattack[m]> it doesn't get stuck when I ask litex_cli to do a read, if that's what you're asking

05:50 <keesj> ````````````````````````````````

06:00 <Melkhior> sajattack[m]: the L2 matters; memory access have to go through the Wishbone instead of directly to he native SDRAM port

06:00 <Melkhior> 8 fpus is quite a lot, but if the design pass timings it shouldn't matter...

11:32 <sajattack[m]> <Melkhior> "sajattack: the L2 matters..." <- Aha

12:20 <acathla> I plugged different SPI devices (flash+ADC+IMU) on the same lines, except for the CS signal, to the iCE40up5K. Is there a simple way to use LiteSPI to communicate with all the devices? Is there an example somewhere?

13:55 <acathla> May be bitbanging is the fastest...

14:10 <_florent_> acathla: for now this is not really supported by LiteSPI, but you can use the SPIMaster core for this: https://github.com/enjoy-digital/litex/blob/master/litex/soc/cores/spi.py#L166-L177

15:00 <bjonnh> jevinskie[m]: someone recommended me https://www.crowdsupply.com/radiona/ulx3s

15:00 <tpb> Title: ULX3S | Crowd Supply (at www.crowdsupply.com)

15:00 <bjonnh> I just need audio out, so that could do it

16:05 <sajattack[m]> If you just need audio, maybe wait for https://github.com/daglem/redip-sid

19:45 <tpw_rules> _florent_: did you ever have a chance to look at my upload?

19:52 <bjonnh> sajattack[m]: I'm looking for something that I could repurpose later

19:53 <bjonnh> I want to play with sound synthesis, so it could be useful if it had ethernet and so on

19:53 <bjonnh> to push things to it later

19:53 <bjonnh> and add midi etc

19:53 <sajattack[m]> ah ok

19:53 <sajattack[m]> then yeah ulx3s looks pretty sweet

19:53 <sajattack[m]> but you did say "I just need audio out" :P

19:54 <bjonnh> sure

19:54 <bjonnh> the problem is that this ulx3s only has 4bit audio

19:55 <bjonnh> so it will sound like crap

19:55 <bjonnh> (at least that's what mupuf said)

19:55 <bjonnh> mupuf: here I drag you into the conversation

20:00 <gatecat> I think you can use delta sigma to get much higher quality

20:00 <gatecat> rather than using it directly as a 4 bit DAC

20:29 <bjonnh> but then I have to add circuitry right? the FPGA doesn't have that inside.

20:29 <bjonnh> mupuf said that adding a pmod would be an easy solution

20:36 <gatecat> no, it relies on running the FPGA output much faster than audio frequencies

20:36 <gatecat> https://github.com/emard/ulx3s-misc/tree/master/examples/audio is an example of this kind of thing, it's PWM not delta sigma

20:36 <gatecat> delta sigma type approach would probably be even better, but either way it should be possible to do a lot better than 4 bits

20:55 <bjonnh> I just pre-ordered the ulx3s, I think I'll have enough to learn before worrying about the quality of the output

20:56 <bjonnh> My only experience is making things with the Fomu