Toots for mike@rebel-lion.uk account

Written by Mike Bell on 2025-01-05 at 22:59

I'm also interested in making a filesystem in the PSRAM - TinyQV doesn't support writing to flash, but having a local filesystem in RAM could be useful - and having a PSRAM filesystem option would be quite handy with various RP2350 MicroPython projects too...

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Written by Mike Bell on 2025-01-05 at 22:57

TinyQV on #TinyTapeout 6 update: I have a CoreMark! 4.969 isn't going to be making any headlines, but it will be interesting to compare to other TinyTapeout SoCs.

And I have a #MicroPython port up and running! GPIO and SPI work, as does mpremote (but not Thonny for some reason). Next on the list will be trying to mount a filesystem on an SD card over SPI.

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Written by Mike Bell on 2025-01-03 at 16:29

First things first, it powers on ok! It’s detected TT commander and the factory test counts on the 7 segment LEDs as expected.

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Written by Mike Bell on 2025-01-03 at 16:15

Finally got my hands on #TinyTapeout 06! I’ve been really looking forward to this, it has my RISC-V RV32EC SoC, which (assuming it works) should be much faster and more flexible than the simple SoC I had on TT04.

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Written by Mike Bell on 2024-12-20 at 20:47

I was playing with dry ice overclocking today at Pimoroni HQ. Fastest we got a Pico 2 was a little over 870MHz, running coremark on both cores, stable for around a minute.

@wren6991 might be interested that the fastest overclock was using the RISC-V cores: https://bsky.app/profile/rebelmike.bsky.social/post/3ldqpektgts2a

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Written by Mike Bell on 2024-11-23 at 15:43

Well that's exciting. RP2350 interpolator rotates not shifts!

Which is cool, but can also break stuff if you are not expecting it.

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Written by Mike Bell on 2024-11-21 at 00:06

I'm trying to get software ready for when the #TinyTapeout 6 boards arrive, which is hopefully just a couple of weeks away now.

I've started work on a Micropython port to run on my SoC - hopefully this workaround can be made to work reliably when the hardware arrives!

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Written by Mike Bell on 2024-11-21 at 00:01

And this is why you should do plenty of testing before tape out...

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Written by Mike Bell on 2024-10-24 at 09:54

The PSRAM support is a really cool feature of the #RP2350, but it does seem like maybe it wasn’t tested much - I’ve never seen any example code for bringing it up from Raspberry Pi, as far as I know it’s all worked out from the datasheet (primarily by me and @tannewt, I think!)

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Written by Mike Bell on 2024-08-08 at 16:17

@wren6991 Huge congrats on getting your Risc-V core into the #RP2350!

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