Re: [beagleboard] UART communication in Beaglebone Black

[Davide Picchi]

Are you sure, that you selected the right UART port???

It should be 
>> /dev/ttyO0
>>
>> or 
>> /dev/ttyO1
>>
>> and so on...but not 
>> /dev/ttySx
>>
>>
>>
On Tuesday, April 28, 2015 at 9:19:31 PM UTC+2, Peter Hurley wrote:
>
> On 04/27/2015 06:41 AM, JAY KOTHARI wrote: 
> > Hi, 
> > I am unable to do simple uart communication in BBB. I have set 
> device tree 
> > 
> > uart2_pins: uart2_pins { 
> > pinctrl-single,pins = < 
> > 0x154 0x01 
> > 0x150 0x31 
> >>; 
> > }; 
> > 
> > &uart2 { 
> > status = "okay"; 
> > pinctrl-names = "default"; 
> > pinctrl-0 = <&uart2_pins>; 
> > }; 
> > 
> > then I configure the UART Port 
> > 
> > stty -F /dev/ttys0 cstopb -evenp ispeed 115200 
>^ 
> stty: /dev/ttys0: No such file or directory 
>
> uart2 is not /dev/ttyS0. 
>
> uart0 = /dev/ttyS0 
> uart1 = /dev/ttyS1 
> uart2 = /dev/ttyS2 
>
> Regards, 
> Peter Hurley 
>
>
> > Then I made a user space application for reading and writing data to 
> > device file. I have attached the application program 
> > 
> > I connected Tx and Rx pin in same BBB.(Loop back mode) 
> > 
> > But  I am not able to do simple UART communication in loop back 
> > mode. Do am I missing something? Please help me 
>
>

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Re: [beagleboard] UART communication in Beaglebone Black

[glslang]

I believe it can be now since v3.19.x but we don't know the kernel version 
he's using so all we can do is guess :(.

There's a recent thread here with some links with instructions on how to 
set it up so perhaps the OP can give that a go :thumbup:.

On Sunday, May 17, 2015 at 8:35:45 AM UTC+1, Davide Picchi wrote:
>
> Are you sure, that you selected the right UART port???
>
> It should be 
>>> /dev/ttyO0
>>>
>>> or 
>>> /dev/ttyO1
>>>
>>> and so on...but not 
>>> /dev/ttySx
>>>
>>>
>>>
> On Tuesday, April 28, 2015 at 9:19:31 PM UTC+2, Peter Hurley wrote:
>>
>> On 04/27/2015 06:41 AM, JAY KOTHARI wrote: 
>> > Hi, 
>> > I am unable to do simple uart communication in BBB. I have set 
>> device tree 
>> > 
>> > uart2_pins: uart2_pins { 
>> > pinctrl-single,pins = < 
>> > 0x154 0x01 
>> > 0x150 0x31 
>> >>; 
>> > }; 
>> > 
>> > &uart2 { 
>> > status = "okay"; 
>> > pinctrl-names = "default"; 
>> > pinctrl-0 = <&uart2_pins>; 
>> > }; 
>> > 
>> > then I configure the UART Port 
>> > 
>> > stty -F /dev/ttys0 cstopb -evenp ispeed 115200 
>>^ 
>> stty: /dev/ttys0: No such file or directory 
>>
>> uart2 is not /dev/ttyS0. 
>>
>> uart0 = /dev/ttyS0 
>> uart1 = /dev/ttyS1 
>> uart2 = /dev/ttyS2 
>>
>> Regards, 
>> Peter Hurley 
>>
>>
>> > Then I made a user space application for reading and writing data to 
>> > device file. I have attached the application program 
>> > 
>> > I connected Tx and Rx pin in same BBB.(Loop back mode) 
>> > 
>> > But  I am not able to do simple UART communication in loop back 
>> > mode. Do am I missing something? Please help me 
>>
>>

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[beagleboard] Beaglebone Black loads by default from SD card (without S2 pressed)

[Nuno Gonçalves]

I've tested in 2 recent production BBB and they are booting by default from 
the SD card, while the eMMC also have a valid bootable system.

U-Boot SPL 2015.04-1-g96581e0 (Apr 13 2015 - 15:00:02)


U-Boot 2015.04-1-g96581e0 (Apr 13 2015 - 15:00:02), Build: 
jenkins-github_Bootloader-Builder-144

   Watchdog enabled
I2C:   ready
DRAM:  512 MiB
MMC:   OMAP SD/MMC: 0, OMAP SD/MMC: 1
Using default environment

Net:not set. Validating first E-fuse MAC
cpsw
Hit any key to stop autoboot:  0 
gpio: pin 53 (gpio 53) value is 1
switch to partitions #0, OK
mmc0 is current device
gpio: pin 54 (gpio 54) value is 1
Checking for: /uEnv.txt ...
933 bytes read in 10 ms (90.8 KiB/s)
gpio: pin 55 (gpio 55) value is 1
Loaded environment from uEnv.txt
Importing environment from mmc ...
Checking if uenvcmd is set ...
gpio: pin 56 (gpio 56) value is 1
Running uenvcmd ...
488 bytes read in 45 ms (9.8 KiB/s)
7062304 bytes read in 438 ms (15.4 MiB/s)
4003470 bytes read in 272 ms (14 MiB/s)
53571 bytes read in 63 ms (830.1 KiB/s)
Kernel image @ 0x8200 [ 0x00 - 0x6bc320 ]
## Flattened Device Tree blob at 8800
   Booting using the fdt blob at 0x8800
   Using Device Tree in place at 8800, end 88010142

Starting kernel ...

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Re: [beagleboard] Beaglebone Black loads by default from SD card (without S2 pressed)

[Robert Nelson]

It's a feature not a bug...
On May 17, 2015 12:10 PM, "Nuno Gonçalves"  wrote:

> I've tested in 2 recent production BBB and they are booting by default
> from the SD card, while the eMMC also have a valid bootable system.
>
> U-Boot SPL 2015.04-1-g96581e0 (Apr 13 2015 - 15:00:02)
>
>
> U-Boot 2015.04-1-g96581e0 (Apr 13 2015 - 15:00:02), Build:
> jenkins-github_Bootloader-Builder-144
>
>Watchdog enabled
> I2C:   ready
> DRAM:  512 MiB
> MMC:   OMAP SD/MMC: 0, OMAP SD/MMC: 1
> Using default environment
>
> Net:not set. Validating first E-fuse MAC
> cpsw
> Hit any key to stop autoboot:  0
> gpio: pin 53 (gpio 53) value is 1
> switch to partitions #0, OK
> mmc0 is current device
> gpio: pin 54 (gpio 54) value is 1
> Checking for: /uEnv.txt ...
> 933 bytes read in 10 ms (90.8 KiB/s)
> gpio: pin 55 (gpio 55) value is 1
> Loaded environment from uEnv.txt
> Importing environment from mmc ...
> Checking if uenvcmd is set ...
> gpio: pin 56 (gpio 56) value is 1
> Running uenvcmd ...
> 488 bytes read in 45 ms (9.8 KiB/s)
> 7062304 bytes read in 438 ms (15.4 MiB/s)
> 4003470 bytes read in 272 ms (14 MiB/s)
> 53571 bytes read in 63 ms (830.1 KiB/s)
> Kernel image @ 0x8200 [ 0x00 - 0x6bc320 ]
> ## Flattened Device Tree blob at 8800
>Booting using the fdt blob at 0x8800
>Using Device Tree in place at 8800, end 88010142
>
> Starting kernel ...
>
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[beagleboard] Re: Beaglebone Black loads by default from SD card (without S2 pressed)

[Nuno Gonçalves]

A little better explained:

S2 is never pressed.

Boot without SD card present:

U-Boot SPL 2015.04-1-g96581e0 (Apr 13 2015 - 15:00:02)


U-Boot 2015.04-1-g96581e0 (Apr 13 2015 - 15:00:02), Build: 
jenkins-github_Bootloader-Builder-144

   Watchdog enabled
I2C:   ready
DRAM:  512 MiB
MMC:   OMAP SD/MMC: 0, OMAP SD/MMC: 1
Using default environment

Net:not set. Validating first E-fuse MAC
cpsw
Hit any key to stop autoboot:  0 
gpio: pin 53 (gpio 53) value is 1
Card did not respond to voltage select!
Card did not respond to voltage select!
gpio: pin 56 (gpio 56) value is 0
gpio: pin 55 (gpio 55) value is 0
gpio: pin 54 (gpio 54) value is 0
switch to partitions #0, OK
mmc1(part 0) is current device
gpio: pin 54 (gpio 54) value is 1
Checking for: /uEnv.txt ...
Checking for: /boot.scr ...
Checking for: /boot/boot.scr ...
Checking for: /boot/uEnv.txt ...
gpio: pin 55 (gpio 55) value is 1
472 bytes read in 14 ms (32.2 KiB/s)
Loaded environment from /boot/uEnv.txt
Checking if uname_r is set in /boot/uEnv.txt...
gpio: pin 56 (gpio 56) value is 1
Running uname_boot ...
loading /boot/vmlinuz-3.14.41-ti-r63 ...
7157368 bytes read in 411 ms (16.6 MiB/s)
loading /boot/dtbs/3.14.41-ti-r63/am335x-boneblack.dtb ...
87161 bytes read in 73 ms (1.1 MiB/s)
loading /boot/initrd.img-3.14.41-ti-r63 ...
3427224 bytes read in 206 ms (15.9 MiB/s)
debug: [console=ttyO0,115200n8 
root=UUID=2f29119c-53ad-4e58-8773-cee555d855c4 ro rootfstype=ext4 rootwait 
fixrtc coherent_pool=1M quiet] ...
debug: [bootz 0x8200 0x8808:344b98 0x8800] ...
Kernel image @ 0x8200 [ 0x00 - 0x6d3678 ]
## Flattened Device Tree blob at 8800
   Booting using the fdt blob at 0x8800
   Loading Ramdisk to 8fcbb000, end 8b98 ... OK
   Loading Device Tree to 8fca2000, end 8fcba478 ... OK

Starting kernel ...


Boot with SD card present:

U-Boot SPL 2015.04-1-g96581e0 (Apr 13 2015 - 15:00:02)


U-Boot 2015.04-1-g96581e0 (Apr 13 2015 - 15:00:02), Build: 
jenkins-github_Bootloader-Builder-144

   Watchdog enabled
I2C:   ready
DRAM:  512 MiB
MMC:   OMAP SD/MMC: 0, OMAP SD/MMC: 1
Using default environment

Net:not set. Validating first E-fuse MAC
cpsw
Hit any key to stop autoboot:  0 
gpio: pin 53 (gpio 53) value is 1
switch to partitions #0, OK
mmc0 is current device
gpio: pin 54 (gpio 54) value is 1
Checking for: /uEnv.txt ...
933 bytes read in 10 ms (90.8 KiB/s)
gpio: pin 55 (gpio 55) value is 1
Loaded environment from uEnv.txt
Importing environment from mmc ...
Checking if uenvcmd is set ...
gpio: pin 56 (gpio 56) value is 1
Running uenvcmd ...
488 bytes read in 46 ms (9.8 KiB/s)
7062304 bytes read in 438 ms (15.4 MiB/s)
4003470 bytes read in 272 ms (14 MiB/s)
53571 bytes read in 64 ms (817.4 KiB/s)
Kernel image @ 0x8200 [ 0x00 - 0x6bc320 ]
## Flattened Device Tree blob at 8800
   Booting using the fdt blob at 0x8800
   Using Device Tree in place at 8800, end 88010142

Starting kernel ...

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Re: [beagleboard] test

[Gerald Coley]

test

On Sat, May 16, 2015 at 4:36 PM, Matteo Guallini 
wrote:

> test
>
> --
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-- 
Gerald

ger...@beagleboard.org
http://beagleboard.org/
http://circuitco.com/support/

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[beagleboard] No Debian kernel package?

[giraffedata]

I need to update my kernel, and I am having trouble reconciling information 
I find with how my system is actually organized.  All I did was download 
the standalone micro-SD card image a few months ago from the *latest-images* 
page.

So this is a Debian system, and looking at various instruction pages, 
programs, and examples, it seems the kernel is supposed to come in a 
*linux-image-XXX 
*Debian package.  But my system has no such package today.

Also, it appears my boot partition is expected to be mounted at */boot*, 
but it's actually mounted at */boot/uboot*, so there's another reason that 
the *update-kernel.sh* program ostensibly can't work for me.

Why the differences?

Thanks for any light anyone can shed on this.


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[beagleboard] Re: beaglebone black not being detected when plugged in through USB cable

[Andre Castro]

As far as I know, there is a known problem related to hot plugging USB 
devices at BBB.
Try connecting Desktop computer before restart the board.

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[beagleboard] RE: Add a new cape for BeagleBone

[Pascal FIFRE]

Hi,

 

Yesterday, I’ve told you that I‘ve created a wiki page for my new cape
IOTCape.

I’ve changed this wiki page to http://elinux.org/IOTYS:IOTCape.

 

Thanks a lot for your help.

 

Best Regards,

 

Pascal

 

 

Pascal FIFRE

IOTYS

43, Garenne Poull ar Rouz

22300 LANNION

www.iotys.com

 

De : Pascal FIFRE [mailto:pascal.fi...@iotys.com] 
Envoyé : vendredi 15 mai 2015 18:40
À : 'beagleboard@googlegroups.com'
Objet : Add a new cape for BeagleBone

 

Hi,

 

I want to add the my new cape (IOTCape) for BeagleBone to BeagleBone capes
site.

I’ve created a wiki page http://elinux.org/User:IOTCape  based on the

http://elinux.org/CircuitCo:BeagleBone_LCD3 wiki page.

 

Attached to this mail you will find :

* A user manual of this new cape.

* DTS file for cape

 

Thanks a lot for your help.

 

Best Regards,

 

Pascal FIFRE

IOTYS

43, Garenne Poull ar Rouz

22300 LANNION

www.iotys.com

 

 

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[beagleboard] HDMI audio truncated

[matteo . guallini]

thi

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[beagleboard] HDMI audio truncated

[matteo . guallini]

Hello,

I'm testing BBB with HDMI audio output. 

If I play a test sound like 

"aplay /usr/share/sounds/alsa/Front_Right.wav"

Sometimes the sound is truncated, for example I can hear only "right" or 
"ight"
Sontimes the sound is missing completaly.
In addition youtube videos are without sound.

The strange thing is that if i open PCMANFM and I go to "
/usr/share/sounds/alsa" and I play the sound selecting the file with the 
left mouse button and using aplay GUI, the sound is good!!

The OS loaded is 
BBB-eMMC-flasher-debian-7.8-lxde-4gb-armhf-2015-03-01-4gb.img

Any suggestion?

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[beagleboard] BeagleBone Black PWM on QNX OS

[amir . kbt]

I would like to have a PWM output signal from BeagleBone Black. I have to 
use QNX operating System (due to Real-Time Constraints) on my BeagleBone.
Do you have any suggestions how to do that?
There is no out of the box QNX bsp to do that.

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Re: [beagleboard] BeagleBone Black + external HD

[cloviscaio]

Hi,

You´ll solve your problem reeading about power supply at BBB.

http://beagleboard.org/peripheral

For external usb (like hdd) your power supply shall be 5v (2A)

"The currently recommended supply current is at least 1.2A (or 6W), but at 
least 2A (or 10W) is recommended if you are going to connect up anything 
over the USB."

Em quarta-feira, 2 de julho de 2014 18:33:00 UTC-3, magn...@gmail.com 
escreveu:
>
> ive used a 1tb Samsung on the bbb. laptop drive however. i think you will 
> be able to plug any ext drive to the bbb but it will need to be powered 
> externally as the draw on the bus will be to high. 

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[beagleboard] Canny edge detection

[janegeorgek]

Has anybody the experience with optimizing canny edge detection in the 
beagle board?

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Re: [beagleboard] No Debian kernel package?

[Robert Nelson]

Please include the output of: 'cat /etc/dogtag'...
On May 17, 2015 1:19 PM,  wrote:

> I need to update my kernel, and I am having trouble reconciling
> information I find with how my system is actually organized.  All I did was
> download the standalone micro-SD card image a few months ago from the
> *latest-images* page.
>
> So this is a Debian system, and looking at various instruction pages,
> programs, and examples, it seems the kernel is supposed to come in a 
> *linux-image-XXX
> *Debian package.  But my system has no such package today.
>
> Also, it appears my boot partition is expected to be mounted at */boot*,
> but it's actually mounted at */boot/uboot*, so there's another reason
> that the *update-kernel.sh* program ostensibly can't work for me.
>
> Why the differences?
>
> Thanks for any light anyone can shed on this.
>
>
>  --
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> ---
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Re: [beagleboard] RE: Add a new cape for BeagleBone

[Gerald Coley]

Yes, you did. But I do not maintain that page. The people that do are
listed there. I do not handle that page. I do not own that page. I cannot
change that page to post your link.

Gerald


On Sat, May 16, 2015 at 4:01 AM, Pascal FIFRE 
wrote:

> Hi,
>
>
>
> Yesterday, I’ve told you that I‘ve created a wiki page for my new cape
> IOTCape.
>
> I’ve changed this wiki page to http://elinux.org/IOTYS:IOTCape.
>
>
>
> Thanks a lot for your help.
>
>
>
> Best Regards,
>
>
>
> Pascal
>
>
>
>
>
> *Pascal FIFRE*
>
> IOTYS
>
> 43, Garenne Poull ar Rouz
>
> 22300 LANNION
>
> www.iotys.com
>
>
>
> *De :* Pascal FIFRE [mailto:pascal.fi...@iotys.com]
> *Envoyé :* vendredi 15 mai 2015 18:40
> *À :* 'beagleboard@googlegroups.com'
> *Objet :* Add a new cape for BeagleBone
>
>
>
> Hi,
>
>
>
> I want to add the my new cape (IOTCape) for BeagleBone to BeagleBone capes
> site.
>
> I’ve created a wiki page http://elinux.org/User:IOTCape  based on the
> http://elinux.org/CircuitCo:BeagleBone_LCD3 wiki page.
>
>
>
> Attached to this mail you will find :
>
> · A user manual of this new cape.
>
> · DTS file for cape
>
>
>
> Thanks a lot for your help.
>
>
>
> Best Regards,
>
>
>
> *Pascal FIFRE*
>
> IOTYS
>
> 43, Garenne Poull ar Rouz
>
> 22300 LANNION
>
> www.iotys.com
>
>
>
>
>
> --
> For more options, visit http://beagleboard.org/discuss
> ---
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> "BeagleBoard" group.
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-- 
Gerald

ger...@beagleboard.org
http://beagleboard.org/
http://circuitco.com/support/

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Re: [beagleboard] BeagleBone Black + external HD

[evilwulfie]

even with a 2a external power supply you MUST use an external powered drive.


On 5/17/2015 6:28 AM, clovisc...@gmail.com wrote:
> Hi,
>
> You´ll solve your problem reeading about power supply at BBB.
>
> http://beagleboard.org/peripheral
>
> For external usb (like hdd) your power supply shall be 5v (2A)
>
> "The currently recommended supply current is at least 1.2A (or 6W),
> but at least 2A (or 10W) is recommended if you are going to connect up
> anything over the USB."
>
> Em quarta-feira, 2 de julho de 2014 18:33:00 UTC-3, magn...@gmail.com
> escreveu:
>
> ive used a 1tb Samsung on the bbb. laptop drive however. i think
> you will be able to plug any ext drive to the bbb but it will need
> to be powered externally as the draw on the bus will be to high. 
>
> -- 
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Re: [beagleboard] RE: Add a new cape for BeagleBone

[evilwulfie]

Just a note for you.
Selling this in the USA requires you to get FCC approval.
It also requires you to get approval from the cell phone providers.
Its NOT cheap for approval.


On 5/17/2015 11:21 AM, Gerald Coley wrote:
> Yes, you did. But I do not maintain that page. The people that do are
> listed there. I do not handle that page. I do not own that page. I
> cannot change that page to post your link.
>
> Gerald
>
>
> On Sat, May 16, 2015 at 4:01 AM, Pascal FIFRE  > wrote:
>
> Hi,
>
>  
>
> Yesterday, I’ve told you that I‘ve created a wiki page for my new
> cape IOTCape.
>
> I’ve changed this wiki page to http://elinux.org/IOTYS:IOTCape.
>
>  
>
> Thanks a lot for your help.
>
>  
>
> Best Regards,
>
>  
>
> Pascal
>
>  
>
> * *
>
> *Pascal FIFRE*
>
> IOTYS
>
> 43, Garenne Poull ar Rouz
>
> 22300 LANNION
>
> www.iotys.com 
>
>  
>
> *De :*Pascal FIFRE [mailto:pascal.fi...@iotys.com
> ]
> *Envoyé :* vendredi 15 mai 2015 18:40
> *À :* 'beagleboard@googlegroups.com
> '
> *Objet :* Add a new cape for BeagleBone
>
>  
>
> Hi,
>
>  
>
> I want to add the my new cape (IOTCape) for BeagleBone to
> BeagleBone capes site.
>
> I’ve created a wiki page http://elinux.org/User:IOTCape  based on
> the  http://elinux.org/CircuitCo:BeagleBone_LCD3 wiki page.
>
>  
>
> Attached to this mail you will find :
>
> · A user manual of this new cape.
>
> · DTS file for cape
>
>  
>
> Thanks a lot for your help.
>
>  
>
> Best Regards,
>
> * *
>
> *Pascal FIFRE*
>
> IOTYS
>
> 43, Garenne Poull ar Rouz
>
> 22300 LANNION
>
> www.iotys.com 
>
>  
>
>  
>
> -- 
> For more options, visit http://beagleboard.org/discuss
> ---
> You received this message because you are subscribed to the Google
> Groups "BeagleBoard" group.
> To unsubscribe from this group and stop receiving emails from it,
> send an email to beagleboard+unsubscr...@googlegroups.com
> .
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>
>
>
>
> -- 
> Gerald
>  
> ger...@beagleboard.org 
> http://beagleboard.org/
> http://circuitco.com/support/
> -- 
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Re: [beagleboard] RE: Add a new cape for BeagleBone

[William Hermans]

Well somewhere in user manual it states something like "lab /
experimentation use only . . ." Which i thought was odd in of its self
anyhow. I wont be buying one.

On Sun, May 17, 2015 at 12:06 PM, evilwulfie  wrote:

>  Just a note for you.
> Selling this in the USA requires you to get FCC approval.
> It also requires you to get approval from the cell phone providers.
> Its NOT cheap for approval.
>
>
>
> On 5/17/2015 11:21 AM, Gerald Coley wrote:
>
> Yes, you did. But I do not maintain that page. The people that do are
> listed there. I do not handle that page. I do not own that page. I cannot
> change that page to post your link.
>
>  Gerald
>
>
> On Sat, May 16, 2015 at 4:01 AM, Pascal FIFRE 
> wrote:
>
>>  Hi,
>>
>>
>>
>> Yesterday, I’ve told you that I‘ve created a wiki page for my new cape
>> IOTCape.
>>
>> I’ve changed this wiki page to http://elinux.org/IOTYS:IOTCape.
>>
>>
>>
>> Thanks a lot for your help.
>>
>>
>>
>> Best Regards,
>>
>>
>>
>> Pascal
>>
>>
>>
>>
>>
>> *Pascal FIFRE*
>>
>> IOTYS
>>
>> 43, Garenne Poull ar Rouz
>>
>> 22300 LANNION
>>
>> www.iotys.com
>>
>>
>>
>> *De :* Pascal FIFRE [mailto:pascal.fi...@iotys.com]
>> *Envoyé :* vendredi 15 mai 2015 18:40
>> *À :* 'beagleboard@googlegroups.com'
>> *Objet :* Add a new cape for BeagleBone
>>
>>
>>
>> Hi,
>>
>>
>>
>> I want to add the my new cape (IOTCape) for BeagleBone to BeagleBone
>> capes site.
>>
>> I’ve created a wiki page http://elinux.org/User:IOTCape  based on the
>> http://elinux.org/CircuitCo:BeagleBone_LCD3 wiki page.
>>
>>
>>
>> Attached to this mail you will find :
>>
>> · A user manual of this new cape.
>>
>> · DTS file for cape
>>
>>
>>
>> Thanks a lot for your help.
>>
>>
>>
>> Best Regards,
>>
>>
>>
>> *Pascal FIFRE*
>>
>> IOTYS
>>
>> 43, Garenne Poull ar Rouz
>>
>> 22300 LANNION
>>
>> www.iotys.com
>>
>>
>>
>>
>>   --
>> For more options, visit http://beagleboard.org/discuss
>> ---
>> You received this message because you are subscribed to the Google Groups
>> "BeagleBoard" group.
>> To unsubscribe from this group and stop receiving emails from it, send an
>> email to beagleboard+unsubscr...@googlegroups.com.
>> For more options, visit https://groups.google.com/d/optout.
>>
>
>
>
>  --
>   Gerald
>
> ger...@beagleboard.org
> http://beagleboard.org/
>  http://circuitco.com/support/
>   --
> For more options, visit http://beagleboard.org/discuss
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>
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Re: [beagleboard] BeagleBone Black + external HD

[William Hermans]

Power mine off USB only and external HDD, ethernet, and serial debug cable
all at once. Like wulf says, you *HAVE* to use an external hdd that is self
powered. You can not power a HDD off of the BBB's USB port . . . .period.

On Sun, May 17, 2015 at 12:00 PM, evilwulfie  wrote:

>  even with a 2a external power supply you MUST use an external powered
> drive.
>
>
>
> On 5/17/2015 6:28 AM, clovisc...@gmail.com wrote:
>
> Hi,
>
>  You´ll solve your problem reeading about power supply at BBB.
>
>  http://beagleboard.org/peripheral
>
>  For external usb (like hdd) your power supply shall be 5v (2A)
>
>  "The currently recommended supply current is at least 1.2A (or 6W), but
> at least 2A (or 10W) is recommended if you are going to connect up anything
> over the USB."
>
> Em quarta-feira, 2 de julho de 2014 18:33:00 UTC-3, magn...@gmail.com
> escreveu:
>>
>> ive used a 1tb Samsung on the bbb. laptop drive however. i think you will
>> be able to plug any ext drive to the bbb but it will need to be powered
>> externally as the draw on the bus will be to high.
>
>  --
> For more options, visit http://beagleboard.org/discuss
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>
>
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Re: [beagleboard] BeagleBone Black PWM on QNX OS

[William Hermans]

Define" "Real-Time constrants"

The beagelbone's have what is known as a PRU, or Programmable Real-time
Unit. These can operate, in "real-time" along side whatever OS is on the
beaglebone. Which is one reason among a few to pick this board over another
similar board. I am not sure  if the PWM's are accessible to the PRU's (
there are two ) in a single cycle, but they should be accessible to the PRU
regardless.

There are also at least machinekit https://github.com/machinekit/machinekit
and xenomai http://xenomai.org/ images / instructions offered at
http://elinux.org/Beagleboard:BeagleBoneBlack_Debian#Debian_Image_Testing_Snapshots
and
http://elinux.org/Beagleboard:BeagleBoneBlack_Debian#3.8.x_BeagleBone.2FBeagleBone_Black_FULL_Cape_Support_.2B_Xenomai

So, there are other options, provided one solution or more fits your needs.
I've read some posts over the last couple years concerning QNX, but . . .
honestly have no interest in it as it is a commercial product. Where the
Beaglebone are open source hardware, and software . . .

On Sun, May 17, 2015 at 6:03 AM,  wrote:

> I would like to have a PWM output signal from BeagleBone Black. I have to
> use QNX operating System (due to Real-Time Constraints) on my BeagleBone.
> Do you have any suggestions how to do that?
> There is no out of the box QNX bsp to do that.
>
> --
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Re: [beagleboard] Re: beaglebone black not being detected when plugged in through USB cable

[William Hermans]

@Nova Jack

Did you change anything recently ? e.g. change Linux images, or update the
kernel ?

On Sat, May 16, 2015 at 6:16 PM, Andre Castro 
wrote:

> As far as I know, there is a known problem related to hot plugging USB
> devices at BBB.
> Try connecting Desktop computer before restart the board.
>
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Re: [beagleboard] BeagleBone Black PWM on QNX OS

[Charles Steinkuehler]

On 5/17/2015 8:03 AM, amir@gmail.com wrote:
> I would like to have a PWM output signal from BeagleBone Black. I have to 
> use QNX operating System (due to Real-Time Constraints) on my BeagleBone.
> Do you have any suggestions how to do that?
> There is no out of the box QNX bsp to do that.

If you want to use QNX, you'll have to perform all the hardware setup
and configuration yourself.  It's reasonably straight-forward to
interface to the PWM registers (see the TRM for details), but you'll
also need to setup the clock multiplexing and resets before anything
will work at all.  The Linux kernel code is a great reference for
getting the clocks/resets configured properly, or you can refer to the
TI bare-metal example applications.

...or see if the QNX folks will make a proper AM335x BSP for you.  :)

-- 
Charles Steinkuehler
char...@steinkuehler.net

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[beagleboard] 4.1.0-rc3-bone1.2 trapped in board - no SSH or serial

[rattus]

Hi - my weekend experiment was to build a Debian Jessie with 
4.1.0-rc3-bone1.2 kernel image to play with; sadly, while it appears to be 
running, I have no way to communicate with it. Pings to its IP address are 
responded to promptly, but SSH login attempts are rejected immediately, and 
there is no apparent serial path either.
I checked the SSH entries in /etc/init on the SD image; they appear to be 
set to enable the sshd server. 
Anyone able to coax the beast out of its shell?

Thx, Mike

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