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by PeterO
Thu Sep 06, 2012 2:20 pm
Forum: General discussion
Topic: Rev2 boards are here!
Replies: 103
Views: 13518

Re: Rev2 boards are here!

The article only says Farnell is using Sony's production facility, so is seems RS is still producing theirs in China.
PeterO
by PeterO
Thu Sep 06, 2012 12:00 pm
Forum: Troubleshooting
Topic: Latest firmware/kernel kills USB+Ethernet
Replies: 17
Views: 2317

Re: Latest firmware/kernel kills USB+Ethernet

I've had a couple of "hangs" in the last few days... USB and ethernet seem dead but green led still flashing once in a while so the machine isn't completely dead. I can't check kernel versions and config at the moment but it seems to have started after the last kernel update I did earlier this week.
by PeterO
Tue Sep 04, 2012 8:11 pm
Forum: C/C++
Topic: A question on Geany.
Replies: 5
Views: 4846

Re: A question on Geany.

You need to create a project (if you havn't done so already).

Menu Project / Properties / Build

Add "-l bcm2835" to the end of the Build command . <<<<< AARRGGHHH typo !!!! Should be -lbcm2835 with no space !

HTH

PeterO
by PeterO
Mon Sep 03, 2012 8:52 pm
Forum: C/C++
Topic: Raspberry Pi startup guide to programming RS232
Replies: 10
Views: 7480

Re: Raspberry Pi startup guide to programming RS232

Arceles wrote:Then it's time to begin some programming on the RPI, but of course... you won't be doing within the RPI, but instead we will use a cross compiler.
Why make life difficult ? geany and gcc is perfectly usable on the Pi.
PeterO
by PeterO
Mon Sep 03, 2012 8:38 pm
Forum: Media centres
Topic: OpenELEC vs Raspbmc vs Xbian
Replies: 70
Views: 122906

Re: OpenELEC vs Raspbmc vs Xbian

I've tried all three, and none of them seem to be able to to the most basic of things ( like play a DVD!) .

Unless you have some huge stash of programmes you've already downloaded from the 'net they all seem pretty much pointless.....
PeterO
by PeterO
Fri Aug 31, 2012 7:50 pm
Forum: Media centres
Topic: building Xbmc problems
Replies: 10
Views: 7631

Re: building Xbmc problems

OK, all built and running, except when I put a Disk (DVD or CD) into the drive it is recognised but when I try to play it I get a pop-up telling me to put the disc in the drive, where it is already !

I see a few other posts about this on various forums but no solutions.

PeterO
by PeterO
Thu Aug 30, 2012 6:57 pm
Forum: Media centres
Topic: building Xbmc problems
Replies: 10
Views: 7631

Re: building Xbmc problems

Following the instructions at http://www.raspbian.org/RaspbianXBMC, using up to date Raspian as the starting point,

I'm seeing lots of warnings during the build: "swp{b} use is deprecated for this architecture"

Is that normal or have a made a mistake in following the instructions ?

PeterO
by PeterO
Wed Aug 29, 2012 7:25 pm
Forum: Staffroom, classroom and projects
Topic: I want this in my school
Replies: 14
Views: 1879

Re: I want this in my school

Have you checked out the "User Groups" forum
http://www.raspberrypi.org/phpBB3/viewforum.php?f=57
and the RaspberryJam pages
http://raspberryjam.org.uk/raspberryjam-locations/ ?
There may be a local group or event you can attend to get some face-to-face help.
PeterO
by PeterO
Tue Aug 28, 2012 6:33 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: i2c repeated start transactions
Replies: 55
Views: 44042

Re: i2c repeated start transactions

Right, I'm with you now 8-)
PeterO
by PeterO
Tue Aug 28, 2012 3:31 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: Serial console cable for the Pi
Replies: 24
Views: 14769

Re: Serial console cable for the Pi

You need to connect TXD, RXD, and Ground on P1 (see http://elinux.org/Rpi_Low-level_peripherals#General_Purpose_Input.2FOutput_.28GPIO.29 ). TXD goes to RXD, RXD to TXD, and Ground to Ground. Look on the web for the DB9 standard serial pinout. That's a quick way to destroy the serial port on the PI...
by PeterO
Tue Aug 28, 2012 3:15 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: i2c repeated start transactions
Replies: 55
Views: 44042

Re: i2c repeated start transactions

Maybe I'm misinterpreting your sequence | START | WR ADR | REG | REP_START | RD ADR | BYTE | STOP | but to me that looks like the sequence used to read a register from a MCP23017. See http://ww1.microchip.com/downloads/en/DeviceDoc/21952b.pdf Did you look at this example ? http://www.robot-electroni...
by PeterO
Tue Aug 28, 2012 11:02 am
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: i2c repeated start transactions
Replies: 55
Views: 44042

Re: i2c repeated start transactions

I used the examples here to get me started with writing i2c code on my Pi.
http://www.robot-electronics.co.uk/htm/ ... amples.htm
HTH

PeterO
by PeterO
Mon Aug 27, 2012 10:26 am
Forum: OpenVG
Topic: Example program to draw random shapes using the C compiler
Replies: 72
Views: 62121

Re: Example program to draw random shapes using the C compil

Very useful !!

One point (that may have been made already) is that this won't work if you have the RAM for the GPU set to the lowest figure (32M). It needs at least 64M of GPU RAM to work.

PeterO
by PeterO
Mon Aug 27, 2012 8:10 am
Forum: User groups and events
Topic: Any upcoming Raspberry Jams in the Cambridge/ Newmarket area
Replies: 1
Views: 917

Re: Any upcoming Raspberry Jams in the Cambridge/ Newmarket

See http://www.raspberrypi.org/phpBB3/viewt ... 57&t=14636
But it looks to be teaching/education themed. First one had much broader topic range.
PeterO
by PeterO
Sun Aug 26, 2012 8:36 pm
Forum: Beginners
Topic: Not user friendly
Replies: 27
Views: 5545

Re: Not user friendly

I think it is ironic that the C is a language that gives you the freedom to do what you want, has spored an operating system that tries to stop you doing anything. Full of unseen bureaucratic rules about the "proper way" of doing things. Of course such rules do suite some people, those who like to ...
by PeterO
Sun Aug 26, 2012 7:05 pm
Forum: General discussion
Topic: Source of micro-usb plugs
Replies: 6
Views: 1760

Re: Source of micro-usb plugs

g4eml wrote:Just looked up the eBay sellers name. It was
so.great.value
Very low cost and they do the job.
Thanks, just the job !
by PeterO
Sun Aug 26, 2012 5:59 pm
Forum: General discussion
Topic: Source of micro-usb plugs
Replies: 6
Views: 1760

Source of micro-usb plugs

I'm looking for a non-moulded micro-usb plug that I can use to supply power to my Pi from a DC-DC converter. But all I can find are cables with plugs already moulded on the ends. Does anyone know of a source of just the plugs please ? Otherwise it seems my only option is to just cut a connector of a...
by PeterO
Sun Aug 26, 2012 4:35 pm
Forum: Raspbian
Topic: Any ways to further minimize RAM usage?
Replies: 9
Views: 3935

Re: Any ways to further minimize RAM usage?

Which figure reported by top though ?

Unless you have something in mind which will use all of the ram then you are really wasting you time with this. Let the kernel look after the memory management, it's much better at it than you'll be ! :roll:
PeterO
by PeterO
Sun Aug 26, 2012 4:24 pm
Forum: Raspbian
Topic: Any ways to further minimize RAM usage?
Replies: 9
Views: 3935

Re: Any ways to further minimize RAM usage?

How are you calculating the figure of "54M" ? Linux uses memory in several ways.

PeterO
by PeterO
Sun Aug 26, 2012 3:25 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: UART not transmitting data (solved)
Replies: 6
Views: 13217

Re: UART not transmitting data

Have you disabled the kernel log output on /dev/ttyAMA0 ? Remove "console=ttyAMA0,115200 kgdboc=ttyAMA0,115200" from /boot/cmdline.txt Also you need to comment out the second line below at the bottom of /etc/inittab #Spawn a getty on Raspberry Pi serial line #T0:23:respawn:/sbin/getty -L ttyAMA0 115...
by PeterO
Sun Aug 26, 2012 9:43 am
Forum: User groups and events
Topic: Second Milton Keynes Jam.
Replies: 25
Views: 3792

Re: Second Milton Keynes Jam.

Sway_1233 wrote: What does anyone else think?
Good ideas ! When I've got the (currently being worked on) "Milton Keynes Raspberry Jam" Forum sorted out we can use that to discuss meeting formats and find out who is bringing something to show etc .

PeterO
by PeterO
Sun Aug 26, 2012 8:24 am
Forum: Advanced users
Topic: Netowrk not functioning while GUI is showing.
Replies: 9
Views: 2033

Re: Netowrk not functioning while GUI is showing.

Maybe an interaction in the USB drivers between the network and the mouse. I used to see it on older kernels but seems to be fixed now.
PeterO
by PeterO
Sun Aug 26, 2012 6:29 am
Forum: Beginners
Topic: How to Create Raspberry Pi SD Card in 5 Minutes!!!
Replies: 8
Views: 2486

Re: How to Create Raspberry Pi SD Card in 5 Minutes!!!

It may be worth noting that if the card has already been programmed one or more times, then there will be two partitions that need unmounting (e.g. /dev/sdb2 and /dev/sdb2).
PeterO

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