Re: [beagleboard] Re: Porting application from BeagleBone Black to Pocket Beagle

2019-01-31 Thread Logan Powell 
Thank you guys! To answer Graham's question, I will be using
Machinekit/LinuxCNC to build a 8/9 axis modular CNC machine (flexible
configuration, with luck).

A side note: Have you guys heard of/any experience with Balena (
https://www.balena.io/docs/learn/getting-started/beaglebone-black/cpp/)?
They seem to have some coverage for both BBB and PB:

https://github.com/balena-os/balena-beaglebone/blob/e5637ab3b5a6c8a3943b43428f3be43f4c270c3a/layers/meta-resin-beaglebone/conf/machine/beaglebone-pocket.conf

On Fri, Jan 25, 2019 at 12:09 PM Dan Julio  wrote:

> It should be possible to move to the Pocketbeagle.  I moved a moderately
> complex application from the black to the pocketbeagle.  I use GPIO, both
> SPIs, I2C and USB.  Here's what I found (4.14-based beaglebone debian
> distro):
>
> 1. SPI and I2C devices should be ok providing you are using the standard
> device files for access.  I am using the SPI busses for a LCD and
> touchscreen.  In that case since I am using a specific driver for each
> device I had to make new device tree files for the pocketbeagle to tell the
> drivers how to talk to the hardware.  And I had to change /boot/uEnv.txt to
> include the new device tree files.  I am using the PRUs so also had to make
> pocketbeagle-specific device tree files for the pins they used as well.
>
> 2. Not sure about UART4 but if a device file shows up for it then I
> imagine it will work.  The pocketbeagle seems to have a good default
> hardware configuration.
>
> 3. The pocketbeagle has a different power distribution.  Like the Black
> it's still using the same PMIC but the external wiring is different.  I
> encourage you to download and look at the schematic and read-up on the PMIC
> operation.  On the PB, the USB power from the micro-USB connector is
> connected directly (through a ferrite inductor) to P1.7 with a fairly fat
> trace.  If you power your hub from P1.7 then the number of devices will be
> based on the capability of the power supply you connect to the micro-USB
> connector (and the USB cable wiring, connector limits, etc).  You could
> have an external 5V power supply that powers both the Pocketbeagle and USB
> Hub.  It would connect to P1.7 (or, alternatively, VIN, on P1.1) and also
> the Hub input.  However, if you power the pocketbeagle via VIN (P1.1) then
> you will see nothing coming out of P1.7.  In that case you have to also
> connect the USB Hub power input directly to the supply.
>
> 4. See above I was a little surprised that you powered the Black via
> P9.7/P9.8.  It works I guess but I wouldn't think this is good practice
> since you are connecting to the output of the PMIC (and back-feeding it).
> I think the Black with USB peripherals is intended to be powered with a
> high-current 5V supply through the barrel jack input since this is the
> high-current path through the PMIC.
>
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[beagleboard] Re: Porting application from BeagleBone Black to Pocket Beagle

2019-01-25 Thread Dan Julio 
It should be possible to move to the Pocketbeagle.  I moved a moderately 
complex application from the black to the pocketbeagle.  I use GPIO, both 
SPIs, I2C and USB.  Here's what I found (4.14-based beaglebone debian 
distro):

1. SPI and I2C devices should be ok providing you are using the standard 
device files for access.  I am using the SPI busses for a LCD and 
touchscreen.  In that case since I am using a specific driver for each 
device I had to make new device tree files for the pocketbeagle to tell the 
drivers how to talk to the hardware.  And I had to change /boot/uEnv.txt to 
include the new device tree files.  I am using the PRUs so also had to make 
pocketbeagle-specific device tree files for the pins they used as well.

2. Not sure about UART4 but if a device file shows up for it then I imagine 
it will work.  The pocketbeagle seems to have a good default hardware 
configuration.

3. The pocketbeagle has a different power distribution.  Like the Black 
it's still using the same PMIC but the external wiring is different.  I 
encourage you to download and look at the schematic and read-up on the PMIC 
operation.  On the PB, the USB power from the micro-USB connector is 
connected directly (through a ferrite inductor) to P1.7 with a fairly fat 
trace.  If you power your hub from P1.7 then the number of devices will be 
based on the capability of the power supply you connect to the micro-USB 
connector (and the USB cable wiring, connector limits, etc).  You could 
have an external 5V power supply that powers both the Pocketbeagle and USB 
Hub.  It would connect to P1.7 (or, alternatively, VIN, on P1.1) and also 
the Hub input.  However, if you power the pocketbeagle via VIN (P1.1) then 
you will see nothing coming out of P1.7.  In that case you have to also 
connect the USB Hub power input directly to the supply.

4. See above I was a little surprised that you powered the Black via 
P9.7/P9.8.  It works I guess but I wouldn't think this is good practice 
since you are connecting to the output of the PMIC (and back-feeding it).  
I think the Black with USB peripherals is intended to be powered with a 
high-current 5V supply through the barrel jack input since this is the 
high-current path through the PMIC.

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[beagleboard] Re: Porting application from BeagleBone Black to Pocket Beagle

2019-01-24 Thread Graham 
Well, it sort of depends on what capabilities you are using.
The CPU is pretty much the same.
The available IO pins pretty much map to different places.
The PocketBeagle does not have Ethernet or Video output.
Some of the defaults are set up differently.
Since you did not mention what you were trying to do, or what capabilities 
you planned to use, the answer has to be "maybe."

If you don't need any of the missing capability, and you are ready to 
adjust for the differences in IO that is present, the answer is "probably."

--- Graham

==

On Thursday, January 24, 2019 at 11:12:35 AM UTC-6, logan...@gmail.com 
wrote:
>
> Just wondering the same thing. I would like to do my development on a 
> larger BeagleBone, but aiming at the PocketBeagle as an ultimate (built-in) 
> target. Is code written for one Beagle portable between others?
>
> Sorry if this is a newb question, but I can't seem to find an answer 
> anywhere else.
>
> On Friday, September 7, 2018 at 2:23:31 PM UTC-4, vtra...@gmail.com wrote:
>>
>> Very very good question from the OP here. I too would like to know more 
>> about porting applications to the Pocket Beagle. In fact I am so interested 
>> I am inclined to give it a try myself. I have a couple BeagleBone Blue 
>> boards that I just got. Clearly, the BB Blue comes with resources not 
>> included on the PocketBeagle. What this question needs is a straightforward 
>> explanation of common resources found on BB Blue, BB Black, and the 
>> PocketBeagle for which a class of applications will run on all of these 
>> boards. 
>>
>> On Tuesday, June 12, 2018 at 11:11:59 AM UTC-6, agm...@gmail.com wrote:
>>>
>>> Hi,
>>>
>>> I have an IoT project which uses BeagleBone Black as the central 
>>> computing device. I'm planning to move to Pocket Beagle (to save some $$). 
>>> I was using the following on BeagleBone Black
>>>
>>>
>>>1. I2C2_SCL (pin P9_19) and I2C2_SDA (pin P9_20). This maps to P1_28 
>>>and P1_26 on Pocket Beagle (not sure what mode this is on)
>>>2. SPI0 and SPI1 on BBB which maps to P1_6,8,10,12 and 
>>>P2_25,27,29,31 on Pocket Beagle. 
>>>3. UART4 on BBB which maps to P2_5 and P2_7 on Pocket Beagle
>>>4. I need an Ethernet Port, Wifi. I plan to add a USB Host A as 
>>>described here 
>>>https://groups.google.com/forum/#!category-topic/beagleboard/GOwSuY4oiyI 
>>>and connect to it a USB hub which can integrate many USB adapters. *Does 
>>>anyone info on how many devices pocket beagle can support this way (from 
>>> a 
>>>current/power perspective)*
>>>5. I was powering the BBB with 5V through pins P9_07 and P9_08. I'm 
>>>a little confused on how I can do that with Pocket Beagle. 
>>>
>>> https://groups.google.com/forum/?utm_source=digest_medium=email/#!category-topic/beagleboard/pocketbeagle/8Y5COfcW-Ok
>>>  
>>>talks about some power issues. *Any input on how I can connect my 5V 
>>>line to Pocket beagle?*
>>>
>>> *Any thoughts on move from BBB to Pocket Beagle? Any other caveats that 
>>> people have found with Pocket Beagle? Stability issues? The software status 
>>> page 'WIP' for most of the items. *
>>>
>>>

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[beagleboard] Re: Porting application from BeagleBone Black to Pocket Beagle

2019-01-24 Thread loganpowell 
Just wondering the same thing. I would like to do my development on a 
larger BeagleBone, but aiming at the PocketBeagle as an ultimate (built-in) 
target. Is code written for one Beagle portable between others?

Sorry if this is a newb question, but I can't seem to find an answer 
anywhere else.

On Friday, September 7, 2018 at 2:23:31 PM UTC-4, vtra...@gmail.com wrote:
>
> Very very good question from the OP here. I too would like to know more 
> about porting applications to the Pocket Beagle. In fact I am so interested 
> I am inclined to give it a try myself. I have a couple BeagleBone Blue 
> boards that I just got. Clearly, the BB Blue comes with resources not 
> included on the PocketBeagle. What this question needs is a straightforward 
> explanation of common resources found on BB Blue, BB Black, and the 
> PocketBeagle for which a class of applications will run on all of these 
> boards. 
>
> On Tuesday, June 12, 2018 at 11:11:59 AM UTC-6, agm...@gmail.com wrote:
>>
>> Hi,
>>
>> I have an IoT project which uses BeagleBone Black as the central 
>> computing device. I'm planning to move to Pocket Beagle (to save some $$). 
>> I was using the following on BeagleBone Black
>>
>>
>>1. I2C2_SCL (pin P9_19) and I2C2_SDA (pin P9_20). This maps to P1_28 
>>and P1_26 on Pocket Beagle (not sure what mode this is on)
>>2. SPI0 and SPI1 on BBB which maps to P1_6,8,10,12 and P2_25,27,29,31 
>>on Pocket Beagle. 
>>3. UART4 on BBB which maps to P2_5 and P2_7 on Pocket Beagle
>>4. I need an Ethernet Port, Wifi. I plan to add a USB Host A as 
>>described here 
>>https://groups.google.com/forum/#!category-topic/beagleboard/GOwSuY4oiyI 
>>and connect to it a USB hub which can integrate many USB adapters. *Does 
>>anyone info on how many devices pocket beagle can support this way (from 
>> a 
>>current/power perspective)*
>>5. I was powering the BBB with 5V through pins P9_07 and P9_08. I'm a 
>>little confused on how I can do that with Pocket Beagle. 
>>
>> https://groups.google.com/forum/?utm_source=digest_medium=email/#!category-topic/beagleboard/pocketbeagle/8Y5COfcW-Ok
>>  
>>talks about some power issues. *Any input on how I can connect my 5V 
>>line to Pocket beagle?*
>>
>> *Any thoughts on move from BBB to Pocket Beagle? Any other caveats that 
>> people have found with Pocket Beagle? Stability issues? The software status 
>> page 'WIP' for most of the items. *
>>
>>

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[beagleboard] Re: Porting application from BeagleBone Black to Pocket Beagle

2018-09-07 Thread vtrandal 
Very very good question from the OP here. I too would like to know more 
about porting applications to the Pocket Beagle. In fact I am so interested 
I am inclined to give it a try myself. I have a couple BeagleBone Blue 
boards that I just got. Clearly, the BB Blue comes with resources not 
included on the PocketBeagle. What this question needs is a straightforward 
explanation of common resources found on BB Blue, BB Black, and the 
PocketBeagle for which a class of applications will run on all of these 
boards. 

On Tuesday, June 12, 2018 at 11:11:59 AM UTC-6, agm...@gmail.com wrote:
>
> Hi,
>
> I have an IoT project which uses BeagleBone Black as the central computing 
> device. I'm planning to move to Pocket Beagle (to save some $$). 
> I was using the following on BeagleBone Black
>
>
>1. I2C2_SCL (pin P9_19) and I2C2_SDA (pin P9_20). This maps to P1_28 
>and P1_26 on Pocket Beagle (not sure what mode this is on)
>2. SPI0 and SPI1 on BBB which maps to P1_6,8,10,12 and P2_25,27,29,31 
>on Pocket Beagle. 
>3. UART4 on BBB which maps to P2_5 and P2_7 on Pocket Beagle
>4. I need an Ethernet Port, Wifi. I plan to add a USB Host A as 
>described here 
>https://groups.google.com/forum/#!category-topic/beagleboard/GOwSuY4oiyI 
>and connect to it a USB hub which can integrate many USB adapters. *Does 
>anyone info on how many devices pocket beagle can support this way (from a 
>current/power perspective)*
>5. I was powering the BBB with 5V through pins P9_07 and P9_08. I'm a 
>little confused on how I can do that with Pocket Beagle. 
>
> https://groups.google.com/forum/?utm_source=digest_medium=email/#!category-topic/beagleboard/pocketbeagle/8Y5COfcW-Ok
>  
>talks about some power issues. *Any input on how I can connect my 5V 
>line to Pocket beagle?*
>
> *Any thoughts on move from BBB to Pocket Beagle? Any other caveats that 
> people have found with Pocket Beagle? Stability issues? The software status 
> page 'WIP' for most of the items. *
>
>

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