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by DogEars
Wed Oct 24, 2012 8:20 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: STICKY: The I2S sound thread.
Replies: 838
Views: 337957

Re: I2S: Anyone got it running?

1.4112Mhz maybe, not Khz?
by DogEars
Mon Oct 15, 2012 2:46 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: Washing after soldering, is water OK?
Replies: 11
Views: 2024

Re: Washing after soldering, is water OK?

Does anyone know how the water is removed from the CPU & RAM during the manufacturing of the RPi?

If they heat them up to drive it off what temps are acceptable?

Cheers,
Ears.
by DogEars
Sat Oct 13, 2012 9:27 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: Washing after soldering, is water OK?
Replies: 11
Views: 2024

Re: Washing after soldering, is water OK?

mahjongg wrote:it depends a bit on the kinds of components that are on the boards.
What about the RPi specifically, I was concerned about the BGA Soc.
What do you think?
by DogEars
Sat Oct 13, 2012 7:26 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: Washing after soldering, is water OK?
Replies: 11
Views: 2024

Re: Washing after soldering, is water OK?

I'm new to soldering and I'm a bit daunted by the whole surface-mount thing, googling around I've seen a few mentions of using 2331-zx flux to make life easier, but they all mention washing it after with warm water.
But you think it's a bad idea?
Cheers, Ears.
by DogEars
Sat Oct 13, 2012 6:02 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: Washing after soldering, is water OK?
Replies: 11
Views: 2024

Washing after soldering, is water OK?

I'm using water soluble flux so after soldering I should wash the board with water, it feels very odd to do such a thing is it okay to do so?
Cheers,
Ears.
by DogEars
Thu Oct 04, 2012 8:42 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: STICKY: The I2S sound thread.
Replies: 838
Views: 337957

Re: I2S: Anyone got it running?

Piece of cake, surely? :-) Dogears, I gather this is 'work' for you - is the outcome going to be some commercial product? Thanks, Andy. I'm a software developer, but nothing at this level, this is just out of curiosity. We're hoping to create an open audio platform with the rpi being the brain at t...
by DogEars
Thu Oct 04, 2012 6:07 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: STICKY: The I2S sound thread.
Replies: 838
Views: 337957

Re: I2S: Anyone got it running?

lucy wrote:is there someone currently writing a driver for I2S?
How hard can it be?
by DogEars
Mon Oct 01, 2012 11:22 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: General Purpose Clock Voltage
Replies: 17
Views: 7980

Re: General Purpose Clock Voltage

Some more info on this would be great! Are the docs likely to be updated, and from what I can see there is a lot of info missing or incorrect, maybe an updated version is on the horrion?
by DogEars
Mon Oct 01, 2012 10:45 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: STICKY: The I2S sound thread.
Replies: 838
Views: 337957

Re: I2S: Anyone got it running?

PCM_CLK is 2.8224 MHz for 44.1kHz sample frequency for instance, clearly cannot be the 19.2MHz crystal source enabled by "(Clock source code = 0001b) ". We've got it working with the bit clock (PCM_CLK) running at 1.4112MHz (44.[email protected]) using the dividers register mentioned earlier in this threa...
by DogEars
Sat Sep 29, 2012 3:35 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: P5 Pinout partial information!
Replies: 44
Views: 11599

Re: P5 Pinout partial information!

Here, I've uploaded some images: Clockwise from top left: Gound down the P1 pins that interfere with my header. The header in-situ My soldering iron tip looks huge in that image! The tiny pins visible from the top of the board ready for soldering http://dogears.s3.amazonaws.com/public/P5_Images.jpg ...
by DogEars
Sat Sep 29, 2012 11:02 am
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: P5 Pinout partial information!
Replies: 44
Views: 11599

Re: P5 Pinout partial information!

I used the bent pin header that mahjongg posted. I've got a shrouded version of the bent pin header, I've had to grind the P1 pins away a little bit with a dremel to get it sit flush but it looks good now I've done that! The only problem is the soldering.. did you have to use a particularly fine ti...
by DogEars
Thu Sep 27, 2012 10:53 pm
Forum: General discussion
Topic: New Stockist Proto-Pic.co.uk
Replies: 6
Views: 1883

Re: New Stockist Proto-Pic.co.uk

I've ordered two as I wanted the P5 header (yesterday afternoon), I've just received an SMS stating they'll be delivered between 1 & 2 today, watch this space. Ears. Arrived around 13:40, Next day delivery! I had to check the invoice to confirm I actually took the FREE delivery option. Pleased to f...
by DogEars
Thu Sep 27, 2012 11:25 am
Forum: General discussion
Topic: New Stockist Proto-Pic.co.uk
Replies: 6
Views: 1883

Re: New Stockist Proto-Pic.co.uk

I've ordered two as I wanted the P5 header (yesterday afternoon), I've just received an SMS stating they'll be delivered between 1 & 2 today, watch this space.
Ears.
by DogEars
Fri Sep 14, 2012 9:18 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: P5 Pinout partial information!
Replies: 44
Views: 11599

Re: P5 Pinout partial information!

Is there such a thing as an 8-way ribbon type connector, I've tried looking, but can only find a Molex connector that has to have each pin individually crimped and inserted into a plastic housing.
Cheers G.
by DogEars
Thu Sep 13, 2012 3:56 pm
Forum: General discussion
Topic: So: who's got a rev2 board?
Replies: 40
Views: 4639

Re: So: who's got a rev2 board?

I assume your order number was later than ORP0786** ? My order number is 2025291*, I'm a "business" if that makes any difference to the order number format? I guess you're right it's down to luck at the moment, I may try and flog a couple of rev1 boards on ebay or at work, really would like the rev...
by DogEars
Thu Sep 13, 2012 2:27 pm
Forum: General discussion
Topic: So: who's got a rev2 board?
Replies: 40
Views: 4639

Re: So: who's got a rev2 board?

Ordered (in the UK) on the 11th, Despatched on the 12th Arrived today from Farnell and it's a revision 1 board made in China...! Disappointed, looking forward to fitting a header for the i2s/pcm.

G.
by DogEars
Mon Sep 10, 2012 12:57 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: P5 Pinout partial information!
Replies: 44
Views: 11599

Re: P5 Pinout partial information!

Something like this would allow the connector to exit parallel to the board from the side: http://www.molex.com/molex/products/datasheet.jsp?part=active/0741621408_PCB_RECEPTACLES.xml and something like this on the end of the lead? http://www.molex.com/molex/products/datasheet.jsp?part=active/002256...
by DogEars
Mon Sep 10, 2012 8:50 am
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: P5 Pinout partial information!
Replies: 44
Views: 11599

Re: P5 Pinout partial information!

So the I2S pins will be the middle 4 pins in a square.

Now I'm after a header that would fit a connector, much like the little plastic connector used to power a 3.5" floppy drive, what's that called?

Ears.
by DogEars
Sun Sep 09, 2012 6:08 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: STICKY: The I2S sound thread.
Replies: 838
Views: 337957

Re: I2S: Anyone got it running?

valtonia wrote: I know it's hard to diagnose from this description without seeing my code or anything, but can anyone think of anything obvious I'm missing?

Cheers,
A.
Did you get this working?

G.
by DogEars
Sun Jul 22, 2012 2:19 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: General Purpose Clock Voltage
Replies: 17
Views: 7980

Re: General Purpose Clock Voltage

bump.
by DogEars
Fri Jul 20, 2012 5:40 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: General Purpose Clock Voltage
Replies: 17
Views: 7980

Re: General Purpose Clock Voltage

I can't seem to get anywhere near 11MHz using the oscillator as the source, but we've figured out that PPLC gives us 400Mhz, could someone give us more information on how to use these clocks, I have a few questions.. Are the clocks fixed? There's some mention of them changing when the system slows d...
by DogEars
Fri Jul 20, 2012 12:45 pm
Forum: C/C++
Topic: Cross-Compile dependant library (libsndfile)
Replies: 0
Views: 882

Cross-Compile dependant library (libsndfile)

I'm trying to get a working cross-compiler running under Linux (Debian squeeze amd64) but I can't seem to link my files with the installed libsndfile, I'm assuming I need to cross-compile the source to target the Raspberry-Pi and link to that version. But I can't seem to find straightforward instruc...
by DogEars
Thu Jul 19, 2012 1:21 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: Does the BUSY flag work for the Clock Control Registers?
Replies: 3
Views: 708

Does the BUSY flag work for the Clock Control Registers?

The docs suggest that certain registers shouldn't be messed with if the BUSY flag is set. I've tried disabling the General Purpose clocks, but the busy flag is always set.

See page 107.

Cheers,
Graeme.

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