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That Atmel chip sounds like quite a heck to work with... the DMA section alone. Also related, 'Improving RAM bandwidth' section. The author's final conclusion
by mjevans 2y ago
That Atmel chip sounds like quite a heck to work with... the DMA section alone. Also related, 'Improving RAM bandwidth' section.
The author's final conclusion about the chip... "Thanks for nothing, Atmel."
I wonder if there are better options available today, but I fear anything useful might involve BGA or similar surface mount techniques.
- dmitrygr 2y ago> I wonder if there are better options available today Rp2350. That’s what I’m basing my next revision of this project on
- mjevans 2y agohttps://www.raspberrypi.com/products/rp2350/ https://www.raspberrypi.com/products/rp2350/ 0.5MB RAM and 4MB of flash might not sound like a lot, but that's plenty for many micro computer system environments.
- dmitrygr 2y agoIt supports QSPI PSRAM natively. So it’ll be a lot faster than doing in manually on ATSAMD21
- mmoskal 2y agoAlso M33 vs M0 and higher clock - should be 2-3x faster. And maybe you can do something with the second core. Im super impressed you got this to work! The memories of the SAMD clocks... Shudders.
- mjevans 2y agoI found an older HN thread from about a month ago while trying to learn more about the RP2350 https://news.ycombinator.com/item?id=41214307 https://news.ycombinator.com/item?id=41214307 It seems that it didn't get much coverage at the time.