31–40 of 356 posts
Can someone explain the benefit of having essentially 4 cores (2 ARM + 2 RISC-V) on the chip but only having 2 able to run simultaneously? Does this take significantly less die space than having all 4 available at all times?
Can someone explain the benefit of having essentially 4 cores (2 ARM + 2 RISC-V) on the chip but only having 2 able to run simultaneously? Does this take significantly less die space than having all 4 available at all times?
Can someone explain the benefit of having essentially 4 cores (2 ARM + 2 RISC-V) on the chip but only having 2 able to run simultaneously? Does this take significantly less die space than having all 4 available at all times?
I think it's a good way to introduce these chips, and it's a great project, but the author's (frankly weird) beef with STM32H7 is detracting from the point they're trying to make: > So, in conclusion, go replan all your STM32H7 projects with RP2350, save money, headaches, and time. STM32H7 chips can run much faster and have a wider selection of peripherals than RP2350. RP2350 excels in some other dimensions, includin…
1. Nobody has a wider selection of peripherals than a chip with 3 PIOs. 2. And my beef is personal - I spent months ( MONTHS of my life) debugging the damn H7, only to find a set of huge bugs in the main reason I had been trying to use it (QSPI ram support), showed it to the manufacturer, and had them do nothing. Later they came back and, without admitting i was right about the bugs, said that "another customer is se…
And still no USB C on the official devboard.
https://www.raspberrypi.com/for-industry/powered-by/product-...
Pimoroni has a maxed-out pin-compatible version with 16MB flash, 8MB PSRAM, and USB-C:
Official news post: https://news.ycombinator.com/item?id=41192341 Official product page: https://news.ycombinator.com/item?id=41192269
How difficult would be emulating an old SRAM chip with an RP2040 or an RP2350? It's an early 80s (or older) 2048 word, 200ns access time CMOS SRAM that is used to save presets on an old Casio synth. It's not a continuous memory read, it just reads when loading the preset to memory.
I feel like PIO would be perfect for that.
Not off topic but a bit tangentially... How difficult would be emulating an old SRAM chip with an RP2040 or an RP2350? It's an early 80s (or older) 2048 word, 200ns access time CMOS SRAM that is used to save presets on an old Casio synth. It's not a continuous memory read, it just reads when loading the preset to memory. I feel like PIO would be perfect for that.
https://photos.app.goo.gl/KabVe5CrfckqnFEt7
https://photos.app.goo.gl/LGAkp6HoYAJc3Uft7
Edit: I did not yet update the rePalm article but much about that is in the Palm discord. https://discord.gg/qs8wQ4Bf
see #repalm-project channel
Not off topic but a bit tangentially... How difficult would be emulating an old SRAM chip with an RP2040 or an RP2350? It's an early 80s (or older) 2048 word, 200ns access time CMOS SRAM that is used to save presets on an old Casio synth. It's not a continuous memory read, it just reads when loading the preset to memory. I feel like PIO would be perfect for that.
I think it's a good way to introduce these chips, and it's a great project, but the author's (frankly weird) beef with STM32H7 is detracting from the point they're trying to make: > So, in conclusion, go replan all your STM32H7 projects with RP2350, save money, headaches, and time. STM32H7 chips can run much faster and have a wider selection of peripherals than RP2350. RP2350 excels in some other dimensions, includin…
1. Nobody has a wider selection of peripherals than a chip with 3 PIOs. 2. And my beef is personal - I spent months ( MONTHS of my life) debugging the damn H7, only to find a set of huge bugs in the main reason I had been trying to use it (QSPI ram support), showed it to the manufacturer, and had them do nothing. Later they came back and, without admitting i was right about the bugs, said that "another customer is se…
> I have been anti-recommending STM’s chips to everyone for a few years now due to STM’s behaviour with regards to the clearly-demonstrated-to-them hardware issues.
You certainly reserve the right. However it is unclear to me why the recommendation to complaints over a months-long period is a product that has just been released.
Trying to ask in a very unbiased way since as a hobbyist I’m looking into ST, Microchip, and RP2040. For my part I’ve had two out of four RP2040 come to me dead on arrival, as part of two separate boards from different vendors - one being Pi Pico from Digilent. Not a ton of experience with Microchip but I hear they have their own problems. Nobody’s perfect, the question is how do the options compare.