Re: [beagleboard] Re: AM335x Beaglebone Black Python Programming Scripts

Hi Chris Many of the RF SoC can be Initialized via UART by sending AT commands   if that's what you are asking ??? I have used a windows python script to send the AT commands to get the Soc eval board running If that's what you are asking the script itself will run from the BB command prompt and

[beagleboard] Recommended way to start a graphical application at boot.

I used LXDE and modify the autostart to operate in kiosk mode. Comment out the lxpanel and pcmanfm. create a shell script (startmyapp.sh) in the home directory that will set up any environment variables you need and launch your application: sudo nano /etc/xdg/lxsession/LXDE/autostart And make

Re: [beagleboard] Replacing cape overlays

Am 23.12.2015 um 00:03 schrieb Robert Nelson: > On Tue, Dec 22, 2015 at 4:59 PM, Richard Weinberger wrote: >> Am 22.12.2015 um 23:48 schrieb Robert Nelson: >>> On Tue, Dec 22, 2015 at 4:40 PM, Richard Weinberger >>> wrote: Hi! I own a

Re: [beagleboard] Replacing cape overlays

Am 22.12.2015 um 23:48 schrieb Robert Nelson: > On Tue, Dec 22, 2015 at 4:40 PM, Richard Weinberger > wrote: >> Hi! >> >> I own a BB-VIEW-43 cape: >> http://at.farnell.com/element14/bb-view-43/4-3inch-lcd-display-cape-for-beaglebone/dp/2364756# >> >> By requesting

[beagleboard] BeagleBone Black PRUs & Matlab

Hi, I'm an engineering student and for my final project I'm working with sensor fusion and computer vision algorithms for pose estimation. I would like to use the PRUs on my BeagleBone Black for the sensor fusion part, given the strict realtime requirements of my application but I find it to

[beagleboard] PRU Clocks phase shifting with respect to each other??

Hi, I am trying to debug a weird behavior. I have code running on PRU 1 that creates a specific waveform on 8 pru output pins (pru1_0 - pru1_7). I am trying to confirm the accuracy of my PRU 1 code by running code on PRU 0 that watches the pins on PRU 1 (physically linked) and measures their

[beagleboard] Re: PRU Clocks phase shifting with respect to each other??

You should really have your test equipment running in a different clock domain than your device under test, and then trigger off your unit under test. Very small phase or time differences between the unit under test and the test equipment can lead to major data differences. You are trying to

[beagleboard] Re: PRU Clocks phase shifting with respect to each other??

Thanks Graham. Yeah, I know. The thing is that having the two share the same chip makes things really fast. In my app I need to make about 125M different measurements, so the difference between a 1ms test and a 10ms makes a huge difference. In fact, I don't need accuracy down to a single

Re: [beagleboard] Re: PRU Clocks phase shifting with respect to each other??

Thanks so much guys. The suggestion of using two BBB is great for getting the test program off the same clock domain. The issue there for me is speed. The easy way to get two BBBs working together would be to have them talk via ethernet. This would be quite slow compared to my current setup

Re: [beagleboard] Re: PRU Clocks phase shifting with respect to each other??

Bill: I don't think the PRU clocks are externally available. I don't know what your interface looks like, but if there was a clock line involved in the data transfer, or marking when data is valid, I would look at inverting or adding some delay in that line going to the receiving PRU. If your

Re: [beagleboard] PRU Clocks phase shifting with respect to each other??

A few other bits of information is needed to get to the bottom of this. - When you run the code on PRU0, what is running on PRU1? Do you put it in reset or at least have it doing something that cannot interfere? - Is everything in the local memory to the PRU in use or in the shared memory? - Is

Re: [beagleboard] Re: PRU Clocks phase shifting with respect to each other??

On 12/23/2015 5:17 PM, Bill Gray wrote: > Fascinating! Thanks guys. > > Graham, > Frequency counting is exactly what I am trying to here, and +-1 is exactly > what I am seeing, so that makes perfect sense. I was not aware that the PRU > clocks were physically available on the BBB! What fun!

[beagleboard] How to setup a cross-toolchain of BBB with proper sysroot on CentOS or Windows?

Hi, Everyone: I'm going to setup a cross-toolchain of BBB for developers using CentOS or Windows. I have read the Cross *Toolchain* for Debian Wheezy

Re: [beagleboard] Re: PRU Clocks phase shifting with respect to each other??

Fascinating! Thanks guys. Graham, Frequency counting is exactly what I am trying to here, and +-1 is exactly what I am seeing, so that makes perfect sense. I was not aware that the PRU clocks were physically available on the BBB! What fun! Where can I find the leads to mess with? Perhaps I

[beagleboard] ubuntu 14.04 ubuntu/temppwd not working

I just flashed a beaglebone black with this prebuilt ubuntu 14.04 image: https://rcn-ee.com/rootfs/2015-12-11/flasher/BBB-eMMC-flasher-ubuntu-14.04.3-console-armhf-2015-12-11-2gb.img.xz However the default ubuntu / temppwd username and password are not working. Do I have the wrong username

Re: [beagleboard] ubuntu 14.04 ubuntu/temppwd not working

On Wed, Dec 23, 2015 at 2:49 PM, Ian Downard wrote: > I just flashed a beaglebone black with this prebuilt ubuntu 14.04 image: > https://rcn-ee.com/rootfs/2015-12-11/flasher/BBB-eMMC-flasher-ubuntu-14.04.3-console-armhf-2015-12-11-2gb.img.xz > > However the default ubuntu /

Re: [beagleboard] How to setup a cross-toolchain of BBB with proper sysroot on CentOS or Windows?

On Wed, Dec 23, 2015 at 1:46 PM, wrote: > Hi, Everyone: > > I'm going to setup a cross-toolchain of BBB for developers using CentOS or > Windows. > > I have read the Cross Toolchain for Debian Wheezy, which told about creating > the cross-toolchain. But it did not find a

[beagleboard] Re: PRU Clocks phase shifting with respect to each other??

Could you use a second BBB as the capture device instead? That would isolate the PRUs from each other and possibly allow for the HW capture that was mentioned. -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google

Re: [beagleboard] How to setup a cross-toolchain of BBB with proper sysroot on CentOS or Windows?

2015/12/24/ 03:54，"Robert Nelson" wrote： > > On Wed, Dec 23, 2015 at 1:46 PM, wrote: > > Hi, Everyone: > > > > I'm going to setup a cross-toolchain of BBB for developers using CentOS or > > Windows. > > > > I have read the Cross Toolchain for