New Raspberry Pi Zero 2W
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@pcr btw someone from Germany who Likes to Test the Board ?
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@t3p3tony said in New Raspberry Pi Zero 2W:
definitely worth giving it a go though!
How about a duet controller board with a plugged in Pi Zero for both controller and SBC functionalities?
Edit: or a Pi Zero and a minimal MCU for i/o only, basically a Klipper style RRF on a single board.
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@pcr said in New Raspberry Pi Zero 2W:
@pcr btw someone from Germany who Likes to Test the Board ?
Ich habe heute einen Zero 2W bestellt, aber ich habe weder Duet3 oder Mini5+.
Vielleicht @cosmowave ?English: I've ordered a Z2W, but don't have duet3 nor Mini5...maybe Cosmowave?
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pi@raspberrypi:~ $ neofetch `.::///+:/-. --///+//-:`` pi@raspberrypi `+oooooooooooo: `+oooooooooooo: -------------- /oooo++//ooooo: ooooo+//+ooooo. OS: Raspbian GNU/Linux 10 (buster) armv7l `+ooooooo:-:oo- +o+::/ooooooo: Host: Raspberry Pi Zero 2 Rev 1.0 `:oooooooo+`` `.oooooooo+- Kernel: 5.10.63-v7+ `:++ooo/. :+ooo+/.` Uptime: 10 mins ...` `.----.` ``.. Packages: 533 (dpkg) .::::-``:::::::::.`-:::-` Shell: bash 5.0.3 -:::-` .:::::::-` `-:::- Terminal: /dev/pts/0 `::. `.--.` `` `.---.``.::` CPU: BCM2835 (4) @ 1.000GHz .::::::::` -::::::::` ` Memory: 49MiB / 427MiB .::` .:::::::::- `::::::::::``::. -:::` ::::::::::. ::::::::::.`:::- :::: -::::::::. `-:::::::: :::: -::- .-:::-.``....``.-::-. -::- .. `` .::::::::. `..`.. -:::-` -::::::::::` .:::::` :::::::` -::::::::::` :::::::. .::::::: -::::::::. :::::::: `-:::::` ..--.` ::::::. `...` `...--..` `...` .:::::::::: `.-::::-` pi@raspberrypi:~ $ ls /opt/dsf/sd filaments firmware gcodes macros menu sys www -
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@pcr I am game.
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@pcr
CAN-FD module for RasPi Pico I checked the prices of the main components: the CAN-FD module and the transceiver chip cost less than 3€
Why is this module so expensive? -
@o_lampe dont Know. Could be the programming software. If Somebody would be interested in programming i would make a small Board with only the 2040 chip
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@pcr said in New Raspberry Pi Zero 2W:
Could be the programming software
It's open source
The open-source MicroPython SDK from Canis Labs implements a sophisticated CAN API, including priority-inversion free drivers, 1μs accuracy timestamps, large buffers, and an API for triggering a logic analyzer or oscilloscope.If you make your own CAN-board, make sure all Pico through-hole pins are still available
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@o_lampe Sure
First development would be a hat for the pico -
@pcr I wonder, if it would also work for the Zero 2W? A quad-core 1GHz SBC-board with CAN-FD would be a gamechanger...
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@o_lampe is that realtime capable though?
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@oliof I started reading about PIO statemachines yesterday, so I might got a wrong impression. They say, those state machine work independant from the processor.
I assume RRF uses them for pulse generation, too. -
@o_lampe said in New Raspberry Pi Zero 2W:
They say, those state machine work independant from the processor.
I assume RRF uses them for pulse generation, too.Does RRF currently run on any hardware that has a PIO state machine?
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@gloomyandy
It seems only the M0 processor has those state machines. The M4 (duet2) doesn't have.
I'm not even sure, if the Sam-C21 has them, although it's from the M0 family. -
@o_lampe I may be wrong but I think that those pio blocks are part of the rPi silicon and not part of the Arm core.
Most of these devices are a combination of a core from Arm plus manufacturer specific peripheral devices. So for instance the SPI device on an STM mcu is more than likely totally different to the SPI devices on a microchip mcu even if they both have the same Arm core. Things get a little bit more confusing though because Arm does provide some standard peripheral designs, that some manufacturers may use (or I think can even modify). So for instance the the SSP device on the LPC1768 (which provides SPI functionality) is actually an ARM PrimeCell Synchronous Serial Port (PL022).
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@gloomyandy said in New Raspberry Pi Zero 2W:
pio blocks are part of the rPi silicon and not part of the Arm core.
Yes they are rpi specific
Some Atmel/Microchip processors have a similar (but much more limited) idea called "configurable custom logic" designed as hardware "glue logic".
@o_lampe said in New Raspberry Pi Zero 2W:
PIO statemachines .....I assume RRF uses them for pulse generation
We do not as they are Rpi 2040 specific. Although we have considered a range of options for pulse generation.
@o_lampe said in New Raspberry Pi Zero 2W:
If we could integrate CAN-FD as PIO state machine in M0(Pico) hardware, we would only need a tranceiver...
Yes, that would be great, anyone found an example of CAN or a similar protocol implemented on 2040 statemachines, with a reference for what bus speeds could be accommodated?
@PCR using that CAN-FD bus IC & transceiver with a Pi (either directly on a Pi 2/3/4, or using a 2040 + USB to a PC) could certainly allow for bus monitoring and protocol diagnosis, independent of using an oscilloscope so that could be interesting.
Alternatively it might allow Klipper or similar to use Duet 3 expansion boards w/o a mainboard, they could implement the Duet CAN-FD protocol on the pi and send the planned moves to each board....
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@t3p3tony said in New Raspberry Pi Zero 2W:
Alternatively it might allow Klipper or similar to use Duet 3 expansion boards w/o a mainboard, they could implement the Duet CAN-FD protocol on the pi and send the planned moves to each board....
That would be really great for slicing&pre-processing of multi-stream gcode
