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Want to buy second hand P...
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Page turner for PineNote ...
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Request for CAD files of ...
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Read GPIO problem |
Posted by: shworker - 02-21-2017, 04:00 AM - Forum: Pi2, Euler and Exp GPIO Ports
- Replies (14)
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I use Pine64 A64-DB-Rev B board and Debian Jessie.
I need read some GPIO pins (69 and 233 on RPI connector) using sysfs. I use pullup resistors (10k) to 3.3v. Measure voltage on these pins. I get 3 v.
Set direction to 'in'.
But, reading /sys/class/gpio/gpioXX/value i always got 0 !
If switch direction to out, then back to in, reading get 1 !
Simple script to test:
Code: #!/bin/sh
SYSFSDIR=/sys/class/gpio
DOOR_PIN=69
UPLVLPIN=233
setup(){
if [ ! -d $SYSFSDIR/gpio$1 ] ; then
echo $1 > $SYSFSDIR/export
fi
# If comment out these 2 lines - always read 0 !
echo 'out' > $SYSFSDIR/gpio$1/direction
echo 'in' > $SYSFSDIR/gpio$1/direction
}
gpio_read(){
cat $SYSFSDIR/gpio$1/value
}
setup $DOOR_PIN
setup $UPLVLPIN
case "$1" in
door)
gpio_read $DOOR_PIN
;;
uplevel)
gpio_read $UPLVLPIN
;;
*)
usage
;;
esac
PS: Sorry for my bad english, my native language is Russian
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Homegear integration and CC1101 |
Posted by: Festyk - 02-19-2017, 02:42 PM - Forum: POT modules
- Replies (4)
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Hi,
I want to use Pine64 as a home-assistant.io server with homegear installed to control eq-3 max! thermostats. I managed to install all of the software but problem occurred after I connected CC1101 radio board to pine. I followed this diagram ti-cc1101.png which is for Raspberry but I found all of the pins with help from this site http://pixcl.com/wp/decaf-boards-and-the...rypie-2-3/
Unfortunately home-gear doesn't see the board and I can't figure out where is the problem. Do I need to change something in OS config or GPIO interface is not working in current development state?
Thanks in advance for any suggestions
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FAN hook up (how?) |
Posted by: tdubduders - 02-18-2017, 11:37 PM - Forum: POT modules
- Replies (1)
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Hey guys,
I had an old laptop laying around and I decided to rip it open and get the little cpu fan out so I could possibly hook it up to the Pine64 board. NOw.....there doesn't seem to be a hook up for this kind of connection. I was wondering if there was a possibility for me to just take the connector off and connect the wires up somewhere to get the fan going.
The reason I want a fan in there is because the bloody thing seems to over heat a little and freeze. Right now I have it outside of the case and it hasn't froze yet, so that indicates to me, that it's been an over heating issue for the processor. Please refer to the picture below and tell me how I could go about connecting this little fan. It actually had a little heat sinc hooked up to it as well...I suppose I could put the heat sinc on as well if I wanted to improve cooling even more.
Thanks guys...
http://imgur.com/a/3lClT
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What cameras are compatible with that ribbon connector? |
Posted by: nayrenitnatsnoc - 02-18-2017, 08:04 PM - Forum: POT modules
- Replies (1)
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I'm looking for a camera with a longer ribbon cable, but I'm not sure how to tell what is/is not compatible. Can someone give me a clue? Feel free to point me to the right wiki page or board spec. I have the original 2 GB Kickstarter Pine64 board.
I searched the forums and didn't find the info. I searched the Wiki, but might not have understood what I was looking at (if I came across the right page).
Thanks,
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Single System Image? |
Posted by: Paraplegic Racehorse - 02-18-2017, 09:07 AM - Forum: Cluster Computing
- Replies (5)
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My five boards arrived yesterday and, of course, I want to cluster them together. I have a program to run which is multithreaded but not parallel across processors (that I know of.)
There once was Kerrighed and OpenSSI, both of which could present the cluster to the user/software as a single system image and hand the transport and messaging layer invisibly. Kerrighed hasn't been active since kernel 2.x and OpenSSI was last updated six or seven years ago.
Is there still a way to create a single system image type cluster?
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Sufficient supply for product integration? |
Posted by: SlowBro - 02-17-2017, 10:31 AM - Forum: General Discussion on PINE A64(+)
- Replies (4)
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I emailed the company earlier this week and haven't gotten a reply. What is the expectations from the company about being able to supply in bulk for product integration? I likely won't need a lot of supply; maybe 2000-5000 per year. But I do want to know this before I proceed down the road of using the Pine.
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