[beagleboard] Re: High speed encoder input capability of BBB?

Hello beezerim! Am Sonntag, 11. September 2016 02:22:54 UTC+2 schrieb beezerlm: > > Is this within the capabilities of the BBB? > Yes, it is. As Charles mentioned, the BBB CPU has three PWM subsystems. Each of them contains one eQEP module. The modules are clocked at 100 MHz, so they can coun

[beagleboard] Re: High speed encoder input capability of BBB?

I did a little reading on the BBB's PRU and that looks great for Motion control projects with it's ability to perform tasks at very low latency. I would be interested to find out if it has full access to using the eQEP module while maintaining low latency. That looks to be just what I need, b

[beagleboard] Re: High speed encoder input capability of BBB?

On Sunday, September 11, 2016 at 2:04:46 PM UTC-4, TJF wrote: > > Hello beezerim! > > Am Sonntag, 11. September 2016 02:22:54 UTC+2 schrieb beezerlm: >> >> Is this within the capabilities of the BBB? >> > > Yes, it is. > > As Charles mentioned, the BBB CPU has three PWM subsystems. Each of them

[beagleboard] Re: High speed encoder input capability of BBB?

I also ordered the TI PRU Cape to go on the BBB. I will be traveling to Chicago this week for the IMTS in chicago so I would like to bring the BBB along with my laptop and peripherals to work with during down time. On Saturday, September 10, 2016 at 8:22:54 PM UTC-4, beezerlm wrote: > > >

[beagleboard] Re: High speed encoder input capability of BBB?

Am Sonntag, 11. September 2016 21:28:52 UTC+2 schrieb beezerlm: > > Hi TJF, > > So basically the libpruio is a driver that makes it easier to access > the PRU and assign I/O and create a subsystem program loop? Is that > correct? What would be the downside of using this driver? Added La

[beagleboard] Re: High speed encoder input capability of BBB?

Well I have obtained a BBB along with the PRU cape. I soldered the Jtag header on and I purchased a blackhawk XDS100v2 JTAG Emulator. I istalled CCSv6 and I have completed the PRU labs 1 through 4 - found here: http://processors.wiki.ti.com/index.php/PRU_Training:_Hands-on_Labs#Hardware I am

[beagleboard] Re: High speed encoder input capability of BBB?

Hi beezerlm! Am Mittwoch, 5. Oktober 2016 18:11:18 UTC+2 schrieb beezerlm: > > Well I have obtained a BBB along with the PRU cape. I soldered the Jtag > header on and I purchased a blackhawk XDS100v2 JTAG Emulator. I istalled > CCSv6 and I have completed the PRU labs 1 through 4 - found here:

[beagleboard] Re: High speed encoder input capability of BBB?

Am Donnerstag, 6. Oktober 2016 16:20:39 UTC+2 schrieb beezerlm: > > I didn't use JTag yet. And I don't use the bloated TI tools. Instead I use >> the lightweight pasm assembler and uio_pruss driver. > > > What do you mean by "bloated"? Do you think my CCSv6/Jtag approach is > overly complicati

[beagleboard] Re: High speed encoder input capability of BBB?

Hi TJF! It's been a few months since my last post, just curious if you have the QEP features ready in libpruio? > Hold your towel, for now. libpruio with QEP features isn't published yet. > I'd have to prepare a beta version for you. (Code should be OK, > documentation isn't finished. BTW: fo

[beagleboard] Re: High speed encoder input capability of BBB?

On Wednesday, October 5, 2016 at 12:11:18 PM UTC-4, beezerlm wrote: > > Well I have obtained a BBB along with the PRU cape. I soldered the Jtag > header on and I purchased a blackhawk XDS100v2 JTAG Emulator. I istalled > CCSv6 and I have completed the PRU labs 1 through 4 - found here: > htt

[beagleboard] Re: High speed encoder input capability of BBB?

Hi beezerlm! Am Samstag, 14. Januar 2017 18:45:33 UTC+1 schrieb beezerlm: > > Hi TJF! It's been a few months since my last post, just curious if you > have the QEP features ready in libpruio? > Yes, QEP is ready. I also found a workarround for the PWM issue, so my development version fully wor

[beagleboard] Re: High speed encoder input capability of BBB?

Greg - Thanks for the link I will check it out. TJF - I should probably wait for the docs because I will probably need them. My project is finished for now, but it's running in a windows environment so it has some limitations on what it can do. I would rather wait until the docs are ready to

[beagleboard] Re: High speed encoder input capability of BBB?

OK, I just got my BBB so I gotta talk a bit out of my butt (having not done this yet myself). What you need to do is get it "interrupt driven". However you do it. I'm thinking there is a GPIO pin that has this capability (and realistically accessible via the OS in whatever dev environment you u

[beagleboard] Re: High speed encoder input capability of BBB?

Hi beezerlm! I tried to answer your EMail, but got an error message: 550 Account Inactive Here's the text I tried to sent: AFAIR the QEP docu is done, but the preparation/installing is still work in progress. I uploaded the beta source at https://github.com/dtjf/libpruio Just check it out,

[beagleboard] Re: High speed encoder input capability of BBB?

Please input PlcEdit on the Google Play and you can program plc on your phone,the PlcEdit is at https://play.google.com/store/apps/details?id=com.xingyu.app

Re: [beagleboard] Re: High speed encoder input capability of BBB?

There is an eCAP module in the processor that *perhaps* could be controlled via a PRU . . . but I have limited knowledge of that peripheral module, and no hands on . . . On Sat, Sep 10, 2016 at 6:25 PM, Dennis Lee Bieber wrote: > On Sat, 10 Sep 2016 15:04:23 -0700 (PDT), beezerlm > declaimed th

Re: [beagleboard] Re: High speed encoder input capability of BBB?

On Wed, Oct 5, 2016 at 12:11 PM, beezerlm wrote: > I am trying to figure out where to go from here. Libpruio looks > promising, but I would like to take the path that would offer the best > overall determinism & latency characteristics for reading encoder input and > controlling IO accordingly.

Re: [beagleboard] Re: High speed encoder input capability of BBB?

On Thursday, October 6, 2016 at 12:19:48 AM UTC-4, Przemek Klosowski wrote: > > > PRU will give you the encoder data, but where do you go from there? If all > you need is some calculations and running simple actuators of the PWM kind, > and/or display to low-pixel-count LCD, you dont' need Linu

Re: [beagleboard] Re: High speed encoder input capability of BBB?

On Thursday, October 6, 2016 at 12:19:48 AM UTC-4, Przemek Klosowski wrote: > > > PRU will give you the encoder data, but where do you go from there? If all > you need is some calculations and running simple actuators of the PWM kind, > and/or display to low-pixel-count LCD, you dont' need Linux-

Re: [beagleboard] Re: High speed encoder input capability of BBB?

On Sun, Jan 15, 2017 at 2:31 AM, TJF wrote: > Yes, QEP is ready. I also found a workarround for the PWM issue, so my > development version fully works on 4.x kernels. But I still couldn't find a > block of time to finish the documentation, yet. Have you tried it on the 4.9.x kernel yet? I've bee

Re: [beagleboard] Re: High speed encoder input capability of BBB?

On Sun, 1/29/17, Drew Fustini wrote: Subject: Re: [beagleboard] Re: High speed encoder input capability of BBB? To: "Beagle Board" Date: Sunday, January 29, 2017, 9:34 AM On Sun, Jan 15, 2017 at 2:31 AM, TJF wrote: > Yes, QE