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I got almost all of my wishes granted with RP2350

dmitry.gr

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Re: I got almost all of my wishes granted with RP2350

#311
post #281

Earlier quoted context omitted.

No they do not. 64megabit

Did you bother to check? It's octal, not QSPI, so I don't know if it's compatible. (edit - and 1.8V, inconvenient)

Octal PSRAM usually cannot fallback to quad mode like some octal flash did.

Re: I got almost all of my wishes granted with RP2350

#312
post #2

Can’t find an official announcement or datasheet yet, but according to this post: * 2x Cortex-M33F * improved DMA * more and improved PIO * external PSRAM support * variants with internal flash (2MB) and 80 pins (!) * 512KiB ram (double) * some RISC-V cores? Low power maybe? Looks like a significant jump over the RP2040!

... And RP2354A/B even has 2MB built in flash!

Indeed an in-package winbond flash die though.

Re: I got almost all of my wishes granted with RP2350

#313

Earlier quoted context omitted.

> Low-power operation Low power suspend? In a Pi Foundation product? Impossible.

Not sure why this is downvoted but the sleep and dormant pico examples have quite some issues, they are still in "extras" and not in "core", so while documentation of features is my personal favorite aspect of the pico, there is room for improvement here still.

It is downvoted because it is a low effort sarcastic comment which provides no real contribution to the discussion. Your comment actually provides real feedback as to where there are currently issues.

Re: I got almost all of my wishes granted with RP2350

#314
In terms of security features, it lacks on-the-fly external memory (flash and PSRAM) encryption and decryption as ESP32 and some newer STM32s did. Decrypting by custom OTP bootloader and running entirely in the internal SRAM maybe sometimes limited for larger firmware.

Re: I got almost all of my wishes granted with RP2350

#315

While I completely agree with the content of the post, I still think that QFN packages in general, and RP2350's in particular, are very hobbyist-averse. Moving all GND pins to the bottom pad makes this chip usable only by people with a reflow oven. I really hoped to see at least a version released as (T)QFP.

My reflow oven is a $5 hot plate and a $15 toaster oven. I don’t know if that is very hobbyist averse.

Re: I got almost all of my wishes granted with RP2350

#316

> It overclocks insanely well says the guy with engineering samples and creme of the creme silicon parts... i expect most that will actually be available when they do to their normal schedule of scraping the literal bottom of the barrel to keep their always empty stocks that will not be the case.

[flagged]

Re: I got almost all of my wishes granted with RP2350

#317
post #281

Earlier quoted context omitted.

Did you bother to check? It's octal, not QSPI, so I don't know if it's compatible. (edit - and 1.8V, inconvenient)

Octal PSRAM usually cannot fallback to quad mode like some octal flash did.

Actually reading the datasheet[1] it doesn't look like it.

[1] https://www.mouser.dk/datasheet/2/1127/APM_PSRAM_OPI_Xccela_...

Re: I got almost all of my wishes granted with RP2350

#319
I presume the article was edited to change its headline after it was submitted to HN, but it's interesting that it doesn't match up with the HN title. It's still a subjective but positive title, but somehow feels like it has a different tone to the title on HN:

HN: "I got almost all of my wishes granted with RP2350"

Article: "Why you should fall in love with the RP2350"

title tag: "Introducing the RP2350"

Re: I got almost all of my wishes granted with RP2350

#320

Would the pio now support sane Ethernet using rmii for example?

I'm assuming you've looked at the pico-rmii-ethernet library? If so, I feel your pain - I've been fixing issues, and am about halfway done. (This is for the DECstation2040 project, available on github). Look for a release in late aug/early sep. (Maybe with actual lance code? Dmitry??) The RP2350 will make RMII slightly easier - the endless DMA allows elimination of the DMA reload channel(s).

I looked at it and dismissed it as too hacky for production. I don't remember the real reason why. I would have to look through my notes. The main question is whether the RP2350 will change that. As in it actually possible to do bug free without weird hacks.
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