Thanks for the answer.
It seems there is not /etc/acpi. I guess it is done somewhere else.
Any ideas?
Il giorno lunedì 2 novembre 2015 15:43:52 UTC+1, toni incog ha scritto:
>
>
> iirc power button input event is routed to acpid. See the /etc/acpi for
> the actual shutdown script.
>
--
For
Great!!!
It works. Thans a lot for all your effort.
Regards.
Alberto
Il giorno lunedì 2 novembre 2015 18:04:15 UTC+1, RobertCNelson ha scritto:
>
> On Mon, Nov 2, 2015 at 11:00 AM, Alberto Potenza
> <alberto@gmail.com > wrote:
> > Thanks for the answer.
> > It s
do that?
Thanks a lot for your help.
Regards.
Alberto
Il giorno martedì 27 ottobre 2015 17:44:23 UTC+1, RobertCNelson ha scritto:
>
> On Tue, Oct 27, 2015 at 11:38 AM, Alberto Potenza
> <alberto@gmail.com > wrote:
> > Dear all,
> > I tried to upgrade my kernel vers
Dear all,
I tried to upgrade my kernel version (from 3.8 to 4.1.10-bone16) of my BBB.
It looks like with the new kernel, the /dev/input/event0 related to the
power button is not created and I need it to monitor the power button
status (I would like to avoid the i2get command).
I am not so sure
Dear all,
I would like to use a OLED screen with my Beaglebone Black.
I saw that there are several OLED screens around, such as this one:
https://learn.adafruit.com/ssd1306-oled-displays-with-raspberry-pi-and-beaglebone-black/overview
which could be nice for me.
Now, I have a quite big C code and
-up signal and starts again but if it goes in SLEEP mode, it
does not receive it.
I am really confused about this behaviour.
Hoping someone already saw that and there is a solution.
Cheers.
Alberto
Il giorno lunedì 11 maggio 2015 18:50:40 UTC+2, Alberto Potenza ha scritto:
Dear all,
I
Dear all,
I have a problem quite similar to this one:
https://groups.google.com/forum/#!topic/beagleboard/qw5zlS4F4p4
This is my setup:
a) a bleaglebone black with 5V on pin VDD_5V
b) a C program doing a shutdown when the power button is pressed.
I have the C program in my rc.local in such a way
Dear all,
I have a problem with my BBB.
I use several buses such as GPMC, SPI...and I initialize the by a dtbo file
in the /etc/rc.local
If I try to take a look in /sys/devices/bone_capemgr.10/slots I can clearly
see them loaded and they work.
Now, at some point, after I used it, I would like
Dear all,
it looks like I cannot take control of pin gpio0_4 (P9, 18).
I tried to export it by doing
echo 4 export
in
/sys/class/gpio
but it doesn't work: I cannot set it as output and move its value and I
cannot set it as input to check values.
By doing:
cat
Dear all,
I would like to see if my Beaglebone black is powered by USB cable or by an
external power supply.
To do that I would like to read the Status register of the TPS65217C.
It should be done by using the I2C0. As far as I have understood, it cannot
be done by userspace by using
Ok,
as usual, after one day searching around, I found the solution 2 minutes
later I wrote the post.
Here the solution:
https://github.com/pehrtree/beaglebone_snippets/tree/master/power
Alberto
Il giorno giovedì 31 luglio 2014 11:02:03 UTC+2, Alberto Potenza ha scritto:
Dear all,
I would
Dear all,
I have tried to work with SPI1 on the beaglebone black (kernel 3.8) by
using spidev.
I saw several guides on that and so, I compiled my own device tree and it
works:
I can send and receive packet, change the spi clock frequency and so on.
This is my device tree file
/dts-v1/;
Dear all,
thanks for your answer: maybe move resistors is the better solution for me.
Thanks again.
Alberto
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Hi,
no results...searched a lot around but..nothing.
Sorry.
Regards.
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Dear all,
I have some problems trying to understand how the boot procedure is in the
Beaglebone Black.
I saw several posts around but it is quite hard for me to fully understand
how it works. So, sorry if I am repeating something that most of you
already know.
What I've understood so far (I
Dear all,
according to AM335xx TRM, a beaglebone black should have 3 mmc available:
- mmc0 (sd card)
- mmc1 (2G flash)
- mmc2.
I am trying to enable mmc2 by device tree (and I am quite sure to have the
right pin settings) but, by doing
dmesg
I obtain:
/ocp/mmc@4781: can't find DMA channel
Dear all,
I would like to make a board to connect to the BBB in such a way to have an
SD card connected to the BBB by the mmc2 bus.
In this way could have 2 SD card accessible by the ARM.
I am not pretty sure if it is possible (in principle it could be).
I need your help in setting the software
automatically the SD card.
Regards.
Alberto
Il giorno martedì 14 gennaio 2014 12:50:19 UTC+1, Alberto Potenza ha
scritto:
Dear all,
I have a question about SPI and SD card. I've already seen a couple of
posts with a similar question but the answer is not fully clear to me.
I have a beaglebone black
Dear all,
I have a question about SPI and SD card. I've already seen a couple of
posts with a similar question but the answer is not fully clear to me.
I have a beaglebone black.
I am booting from SD card.
I am using the GPMC bus.
I would like to use the SPI1 lines to connect another SD card.
I
Dear Gerald and William,
sorry for the long delay.
I fixed the boot problem: I was using the GPIO2_9 and GPIO2_10 pins which
should be free during the booting phase.
When the FPGA is off, those pins are grounded (which is not good).
By removing those wires, everything works fine!!
It is written
Gerald, William,
thanks for your help.
Here there is my .dts file.
Alberto
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I forgot to mention that I am connecting the gpmc and the spi0-spi1 pins of
the headers.
Alberto
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Hi Gerald,
actually I've already disabled eMMC:
In fact, I obtain:
root@arm:/# cat /sys/devices/bone_capemgr.9/slots
0: 54:PF---
1: 55:PF---
2: 56:PF---
3: 57:PF---
4: ff:P-O-- Bone-LT-eMMC-2G,00A0,Texas Instrument,BB-BONE-EMMC-2G
5: ff:P-O-- Bone-Black-HDMI,00A0,Texas
Yes,
I press the boot button and then I plug the USB cable to power on the board.
Alberto
Il giorno mercoledì 13 novembre 2013 19:22:56 UTC+1, Gerald ha scritto:
Did you press the boot button before you applied power?
Gerald
On Wed, Nov 13, 2013 at 11:33 AM, Alberto Potenza
alberto
Dear all,
I posted a similar post in the TI E2E forum and they said to post it here,
so...
I have to set the AM3x side to manage the reading phase from a FIFO placed
inside an FPGA and I almost lost. I saw several posts which starts as: I
have to use GPMC bus and I do not know how to do it.,
Dear Gerald,
once again you are right: I should not use the word high so easily.
By the way, thanks again for your help.
Alberto
Depends on your definition of HIGH. GPMC is 100MHZ and up to 16Bits wide.
Gerald
On Fri, Oct 11, 2013 at 9:58 AM, Alberto Potenza
alberto
there is the possibility
to send out the mmc signals without a clock for them? Am I missing
something also here?
Thanks again for your help.
Alberto
Depends on your definition of HIGH. GPMC is 100MHZ and up to 16Bits wide.
Gerald
On Fri, Oct 11, 2013 at 9:58 AM, Alberto Potenza
alberto
Dear Gerald,
thanks a lot for your help: it is really useful for me to have you on the
other side.
Maybe I'm begginning to see the light (as Duke Ellington said...).
Now, this point is not clear to me:
Now, if we take again the BeagleBone Black System Reference Manual at
pag.82 there is
Dear all,
I need help to understand if BBB fits what I need.
I would like to use the BBB-GPMC bus to communicate with an FPGA (placed on
a custom made PCB) and save some data in the SD card.
In particular, I would like to send data from FPGA to BBB, have some
data-analysis and then save them in
Dear all,
I am new in this forum.
I looked carefully all around but I cannot find this information:
the GPMC max speed is - 16 bit X 100 MHz = 1.6 Gbit/s
I would like to know that information for the SPI case (probably it is
written somewhere in capital letters but I missed it).
Could you
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