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by BigNeilM
Wed Dec 09, 2015 9:39 am
Forum: Python
Topic: RPi.GPIO sudo versus sudo-less performance differences
Replies: 6
Views: 3240

Re: RPi.GPIO sudo versus sudo-less performance differences

Might want to log a ticket in sourceforge http://sourceforge.net/p/raspberry-gpio-python/tickets/?source=navbar or try to contact the author https://www.raspberrypi.org/forums/memberlist.php?mode=viewprofile&u=4165 Does anyone know if Ben Croston is still actively supporting this code? Or is it...
by BigNeilM
Thu Dec 03, 2015 2:23 pm
Forum: General discussion
Topic: Posting time stamps BST?
Replies: 8
Views: 1119

Re: Posting time stamps BST?

How bizarre. I thought that's what we had computers for. :D
by BigNeilM
Thu Dec 03, 2015 1:30 pm
Forum: Device Tree
Topic: Pi Zer0 seems not to be using HAT eeprom
Replies: 13
Views: 4877

Re: Pi Zer0 seems not to be using HAT eeprom

Thanks again. :D
by BigNeilM
Thu Dec 03, 2015 1:24 pm
Forum: General discussion
Topic: Posting time stamps BST?
Replies: 8
Views: 1119

Posting time stamps BST?

Anyone know why the posting time stamps are an hour ahead of UTC/GMT? :?
by BigNeilM
Mon Nov 30, 2015 1:46 pm
Forum: Device Tree
Topic: Pi Zer0 seems not to be using HAT eeprom
Replies: 13
Views: 4877

Re: Pi Zer0 seems not to be using HAT eeprom

Yay! Thanks, Phil. That seems to be working. :D
by BigNeilM
Mon Nov 30, 2015 1:00 pm
Forum: Device Tree
Topic: Pi Zer0 seems not to be using HAT eeprom
Replies: 13
Views: 4877

Re: Pi Zer0 seems not to be using HAT eeprom

Tried making it executable, just in case and rebooted. No change, I'm afraid.
by BigNeilM
Mon Nov 30, 2015 12:53 pm
Forum: Device Tree
Topic: Pi Zer0 seems not to be using HAT eeprom
Replies: 13
Views: 4877

Re: Pi Zer0 seems not to be using HAT eeprom

I put your dt-blob.bin in / and rebooted with a hat attached. Still not seeing it as far as I can see. On the Pi2 dtc -I fs /proc/device-tree gives this: model = "Raspberry Pi 2 Model B Rev 1.1"; compatible = "brcm,bcm2709"; memreserve = <0x3b000000 0x4000000>; #address-cells = <...
by BigNeilM
Mon Nov 30, 2015 12:19 pm
Forum: Device Tree
Topic: Pi Zer0 seems not to be using HAT eeprom
Replies: 13
Views: 4877

Re: Pi Zer0 seems not to be using HAT eeprom

Don't know if it's significant but dtc -I fs /proc/device-tree gives: model = " Raspberry Pi ? Rev 1.2 "; compatible = "brcm,bcm2708"; memreserve = <0x1c000000 0x4000000>; #address-cells = <0x1>; #size-cells = <0x1>; interrupt-parent = <0x1>;
by BigNeilM
Mon Nov 30, 2015 11:14 am
Forum: Device Tree
Topic: Pi Zer0 seems not to be using HAT eeprom
Replies: 13
Views: 4877

Re: Pi Zer0 seems not to be using HAT eeprom

Just poking around in /boot there seem to be dtb files for rpi-b, rpi-b-plus, rpi-cm and rpi-2-b.
Should there be a new one for the Pi Zer0 or does it use the rpi-b-plus version, like the APlus does?
by BigNeilM
Mon Nov 30, 2015 9:42 am
Forum: General discussion
Topic: Pi Zer0 clock frequency
Replies: 2
Views: 627

Re: Pi Zer0 clock frequency

No. I'm using the latest and greatest Raspbian Jessie. pi@raspberrypi:~ $ lsb_release -a No LSB modules are available. Distributor ID: Raspbian Description: Raspbian GNU/Linux 8.0 (jessie) Release: 8.0 Codename: jessie pi@raspberrypi:~ $ uname -a Linux raspberrypi 4.1.13+ #826 PREEMPT Fri Nov 13 20:...
by BigNeilM
Mon Nov 30, 2015 9:13 am
Forum: General discussion
Topic: Pi Zer0 clock frequency
Replies: 2
Views: 627

Pi Zer0 clock frequency

The advertised clock frequency for Pi Zer0 is 1GHz, but the default setting determined through /boot/config.txt or raspi-config seems to be 700MHz, whatever the hardware. I'm guessing the Pi Zer0 needs to be set to the higher clock speed and it's not automatic. Is this correct or did I miss something?
by BigNeilM
Mon Nov 30, 2015 8:01 am
Forum: Raspberry Pi OS
Topic: Raspbian Jessie Lite - missing bits!
Replies: 10
Views: 3318

Re: Raspbian Jessie Lite - missing bits!

Ok, so Jessie Lite has python2(now deprecated) but not python3, the Foundation's preferred option as I understand it.

It just struck me as a little odd.

As for the other bits, well, whatever. I'll go install them.
by BigNeilM
Mon Nov 30, 2015 12:07 am
Forum: Raspberry Pi OS
Topic: Raspbian Jessie Lite - missing bits!
Replies: 10
Views: 3318

Raspbian Jessie Lite - missing bits!

Yeah, yeah, I know it's a severely cut down version, but :

No python3?
No git?
No fonts? (ttf in /usr/share/fonts)

I can understand stripping out the all the GUI-related stuff and the space hogs such as wolfram and libre office, but really, do we need to lose some of the really useful elements too?
by BigNeilM
Sun Nov 29, 2015 12:48 am
Forum: Python
Topic: RPi.GPIO sudo versus sudo-less performance differences
Replies: 6
Views: 3240

Re: RPi.GPIO sudo versus sudo-less performance differences

I'm seeing it on APlus and BPlus but not on a Pi2. Seems to occur in python 2 and in python3. Latest Raspbian Jessie. Ticket raised with Ben Croston.
by BigNeilM
Sat Nov 28, 2015 10:56 pm
Forum: Device Tree
Topic: Pi Zer0 seems not to be using HAT eeprom
Replies: 13
Views: 4877

Re: Pi Zer0 seems not to be using HAT eeprom

Hey Phil,

Thanks for confirming I'm not going mad. :-)

Cheers, Neil
by BigNeilM
Sat Nov 28, 2015 7:26 pm
Forum: Device Tree
Topic: Pi Zer0 seems not to be using HAT eeprom
Replies: 13
Views: 4877

Pi Zer0 seems not to be using HAT eeprom

Anyone else seeing this? Latest Raspbian, on an APLus, the right thing happens. Put the SD card in a Pi Zer0 and it seems not to get the additional DT data from the HAT eeprom to set up the GPIO. Can manually configure them in e.g. a python program using RPi.GPIO. Tried it with my E-paper HAT and wi...
by BigNeilM
Mon Aug 31, 2015 9:45 am
Forum: Astro Pi
Topic: Astro Pi tutorial problem
Replies: 4
Views: 1907

Astro Pi tutorial problem

The instructions here https://www.raspberrypi.org/learning/getting-started-with-astro-pi/requirements/software/ are incomplete! The missing step is sudo pip-3.2 install pillow - without this python 3.2 will complain that it can't find the imaging library module. Can someone please update the tutoria...
by BigNeilM
Wed Aug 26, 2015 11:18 pm
Forum: Raspberry Pi OS
Topic: Distribution updates going awry!
Replies: 9
Views: 1778

Re: Distribution updates going awry!

Doh! Too late for this. :-/
Thanks.
by BigNeilM
Wed Aug 26, 2015 10:58 pm
Forum: Raspberry Pi OS
Topic: Distribution updates going awry!
Replies: 9
Views: 1778

Re: Distribution updates going awry!

What do you see if you type uname -a? Linux raspberrypi 3.18.11-v7+ #781 SMP PREEMPT Tue Apr 21 18:07:59 BST 2015 armv7l GNU/Linux What do you see if you type ls -l /lib/modules? total 8 drwxr-xr-x 3 root root 4096 Aug 26 23:07 4.1.6+ drwxr-xr-x 3 root root 4096 Aug 26 23:07 4.1.6-v7+ So where are t...
by BigNeilM
Wed Aug 26, 2015 10:06 pm
Forum: Raspberry Pi OS
Topic: Distribution updates going awry!
Replies: 9
Views: 1778

Distribution updates going awry!

Can someone explain what on earth is happening? In the last 36 hours, starting from a 2015-05-05 3.18 kernel image, apt-get update & apt-get upgrade have variously produced 3.18.7+ kernel with appropriate modules, 4.1.6+ with appropriate modules and most recently 3.18.11+ with 4.1.6 and 4.1.6+ m...
by BigNeilM
Fri Jul 11, 2014 8:12 am
Forum: Troubleshooting
Topic: Think I zapped the on-board serial
Replies: 10
Views: 1527

Re: Think I zapped the on-board serial

I don't think RPi.GPIO currently supports the setting of any modes other than INPUT and OUTPUT. Is this a problem in practice? Why will you be switching them out of ALT0 mode? As evident by my original posting, it is possible to somehow find pins NOT in ALT0 mode at which point they cease to perfor...
by BigNeilM
Fri Jul 11, 2014 12:11 am
Forum: Troubleshooting
Topic: Think I zapped the on-board serial
Replies: 10
Views: 1527

Re: Think I zapped the on-board serial

Hi folks, I think I have zapped the serial port on two of my Rev 2 boards. GPIO14 and GPIO15 seem to function ok as general IO pins. I can toggle both of them them on and off as outputs and I can read both high and low from each when they are set as inputs. ... How do you change their modes to inpu...
by BigNeilM
Thu Jul 10, 2014 11:45 pm
Forum: Troubleshooting
Topic: Think I zapped the on-board serial
Replies: 10
Views: 1527

Re: Think I zapped the on-board serial

klricks wrote:Try a 'loopback' test by connecting the TX and RX GPIO together. Then run terminal software such as minicom or cutecom.
Typed characters should echo back to the screen.
Yeah, tried that. Works for the unzapped units and does nothing on the zapped ones.
by BigNeilM
Thu Jul 10, 2014 11:44 pm
Forum: Troubleshooting
Topic: Think I zapped the on-board serial
Replies: 10
Views: 1527

Re: Think I zapped the on-board serial

joan wrote:Interesting.

Is there any activity on the UART gpios when you try to send/receive data?
I haven't tried hanging an oscilloscope on the pins. Something to try, I guess.
by BigNeilM
Thu Jul 10, 2014 4:51 pm
Forum: Troubleshooting
Topic: Think I zapped the on-board serial
Replies: 10
Views: 1527

Think I zapped the on-board serial

Hi folks, I think I have zapped the serial port on two of my Rev 2 boards. GPIO14 and GPIO15 seem to function ok as general IO pins. I can toggle both of them them on and off as outputs and I can read both high and low from each when they are set as inputs. Unfortunately, when I try to use them as a...

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