LinuxCNC at RPI4 with using IO Pins only ?

PCW
Away
Moderator

28 Mar 2021 19:07 - 28 Mar 2021 19:07 #203927 by PCW

Replied by PCW on topic LinuxCNC at RPI4 with using IO Pins only ?

Yes, if its a slow serial setup thing then a separate comp makes sense.
If you can setup chip parameters via SPI (like some chips I am familiar with),
hal parameters should be fine as they are not transmitted so take near 0 CPU
if not changed (and allow real time adjustments if needed)

Last edit: 28 Mar 2021 19:07 by PCW.

Please Log in or Create an account to join the conversation.

andypugh
Offline
Moderator

28 Mar 2021 23:47 #203965 by andypugh

Replied by andypugh on topic LinuxCNC at RPI4 with using IO Pins only ?

Are you saying that some Trinamic chips can take position commands over SPI and effectively generate steps internally?

The datasheet that I just glanced at didn't seem to be saying that, for the one that I looked at.

Please Log in or Create an account to join the conversation.

PCW
Away
Moderator

29 Mar 2021 01:11 #203968 by PCW

Replied by PCW on topic LinuxCNC at RPI4 with using IO Pins only ?

Yes, the TMC5160 can do this and probably others
Also the ST Micro PowerStep01

Please Log in or Create an account to join the conversation.

rufino
Offline
New Member

17 Jan 2024 01:25 #290919 by rufino

Replied by rufino on topic LinuxCNC at RPI4 with using IO Pins only ?

Is it possible to provide a tutorial for configuring the Raspberry Pi using GPIO with LinuxCNC?

Please Log in or Create an account to join the conversation.

rodw
Offline
Platinum Member

17 Jan 2024 09:41 #290933 by rodw

Replied by rodw on topic LinuxCNC at RPI4 with using IO Pins only ?

rufino wrote:
Is it possible to provide a tutorial for configuring the Raspberry Pi using GPIO with LinuxCNC?

Try linuxcnc.org/docs/stable/html/drivers/hal_gpio.html

Please Log in or Create an account to join the conversation.

Time to create page: 0.130 seconds