How to debug a real-time component?

andypugh
Offline
Moderator

20 Jun 2019 18:12 - 20 Jun 2019 18:14 #137399 by andypugh

Replied by andypugh on topic How to debug a real-time component?

ajsinfotech wrote:
- Then I started developing a driver for an RPi board to direct access the GPIO hardware with the same concept. I started this thread at this point.

That should not be necessary. There is already a driver, but for some reason I am not clear on it did not make it in to the LinuxCNC set.

Section 4 here:
wiki.linuxcnc.org/cgi-bin/wiki.pl?RPi3BPreemptRT

Last edit: 20 Jun 2019 18:14 by andypugh.

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

andypugh
Offline
Moderator

20 Jun 2019 18:15 #137400 by andypugh

Replied by andypugh on topic How to debug a real-time component?

Also, rather than bit-bang on GPIO, you could use this:
store.mesanet.com/index.php?route=produc...oduct&product_id=338

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

andypugh
Offline
Moderator

20 Jun 2019 18:23 #137401 by andypugh

Replied by andypugh on topic How to debug a real-time component?

But, if you _want_ to write a driver, perhaps a generic "hal_arm_gpio" component would be an interesting challenge?

The Machinekit hal_bb_gpio (for beaglebone) looks like a good starting point:
github.com/machinekit/machinekit/tree/ma.../drivers/hal_bb_gpio

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

ajsinfotech
Offline
Senior Member

24 Jun 2019 18:00 #137746 by ajsinfotech

Replied by ajsinfotech on topic How to debug a real-time component?

Hi PCW!

Pretty clever method! It could be very useful in some cases.

Thanks for share!

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

ajsinfotech
Offline
Senior Member

24 Jun 2019 18:30 #137748 by ajsinfotech

Replied by ajsinfotech on topic How to debug a real-time component?

Hi andypugh!

Pretty nice and clean solution but, I design my own breakout board because I need to drive a 220VAC line to switch a lube pump. I also need a simple PWM to analog circuit converter to drive my Yaskawa VFD controller. I put all that together in one board.
So I think bit-banging and the 26 pins of my RPi3B+ should be enough to my purpose. I am building a 3axis Gantry machine.

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

ajsinfotech
Offline
Senior Member

24 Jun 2019 18:42 #137749 by ajsinfotech

Replied by ajsinfotech on topic How to debug a real-time component?

I have already seen the hal_bb_gpio example. I used it as my starting point

If I get a clean code, it could be nice to develop the "ARM" version of the module to share. Thanks for the suggestion

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

Time to create page: 0.083 seconds