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by reggie
Tue Jun 12, 2012 6:50 pm
Forum: Debian
Topic: ttyUSB0 FTDI crash
Replies: 13
Views: 8837

Re: ttyUSB0 FTDI crash

Are you sure that you've got the drivers loaded correctly? http://www.elinux.org/Hammer_How_to_USB_FTDI that page would tend to suggest that it is entirely possible to compile ftdi drivers for arm :-) Also in the arduino post linked to above, it suggests modprobing another driver.
by reggie
Mon Jun 11, 2012 1:30 am
Forum: General discussion
Topic: SD Card performance in R-Pi onboard slot
Replies: 289
Views: 162165

Re: SD Card performance in R-Pi onboard slot

Fantastic work lb :) I'd like to clear a couple of things up if I may? 1. Your patches have basically set the emmc clock to 50Mhz, this allows the driver to correctly calculate clock speeds and dividers that are in line with the SD spec for 'default and 'high' speed cards. These 2 modes are the only...
by reggie
Sun Jun 10, 2012 2:10 pm
Forum: Troubleshooting
Topic: 8000 interrupts per second when idle!
Replies: 141
Views: 56254

Re: 8000 interrupts per second when idle!

I Agree that once the drivers are fixed that no one needs to worry about them but this project is based around people learning to program on these devices, whether it's device drivers or controlling robots, it doesn't really matter, documentation is key. Coupled with the fact that whilst the origina...
by reggie
Sun Jun 10, 2012 1:45 pm
Forum: Troubleshooting
Topic: Bluetooth with AR3011
Replies: 5
Views: 9217

Re: Bluetooth with AR3011

Have you made sure that the firmware binary is actually on your system? Some usb devices are blank and only do their magic via a firmware that is loaded when you plug the device in, if the firmware isn't present, it won't ever work.
by reggie
Sat Jun 09, 2012 5:07 pm
Forum: Troubleshooting
Topic: Debian Won't Boot: mmc0 Timeout
Replies: 10
Views: 7466

Re: Debian Won't Boot: mmc0 Timeout

could do with more details about the card. have you tried other distros? Can you update the distro you're using offline?
by reggie
Sat Jun 09, 2012 3:20 pm
Forum: Troubleshooting
Topic: 8000 interrupts per second when idle!
Replies: 141
Views: 56254

Re: 8000 interrupts per second when idle!

I think that's the issue here isn't it though? Lack of proper documentation, all well and good having source code but without documentation you're probably stumbling around in the dark slightly and having to use other strategies to find documentation. Like looking at other targets that use synopsys ...
by reggie
Fri Jun 08, 2012 11:22 am
Forum: Troubleshooting
Topic: Pi potentially broke my TV
Replies: 31
Views: 6308

Re: Pi potentially broke my TV

This is the 2nd post regarding a TV potentially dying with the pi, http://www.raspberrypi.org/phpBB3/viewt ... 628#p91628
by reggie
Fri Jun 08, 2012 10:59 am
Forum: Troubleshooting
Topic: voltage and polyfuse
Replies: 38
Views: 14254

Re: voltage and polyfuse

I think there has been a fair bit of discussion on the polyfuses already, at 3.5v across tp1/2 for the OP, that is clearly not good. My fuses read: F1 5.9ohms F2 5.9ohms F3 2.1ohms There is a very minimal datasheet for the F1/F2 polyfuses, it doesn't make for particularly brilliant reading, the upsh...
by reggie
Thu Jun 07, 2012 10:00 am
Forum: Troubleshooting
Topic: Broken a piece of my Pi
Replies: 8
Views: 2046

Re: Broken a piece of my Pi

No, the pins shouldn't be in the board :) That is more commonly known as a surface mount capacitor, which is supposed to be soldered (Not glued!) to the surface of the pcb. You're actually expected to take a little more care around the pcb and not knock stuff off :D
by reggie
Wed Jun 06, 2012 9:09 pm
Forum: Troubleshooting
Topic: Sd cards, clock settings.
Replies: 2
Views: 2956

Re: Sd cards, clock settings.

Yes there have been people that have clocked the emmc controller higher than 20Mhz, it's actually defined in code to 80Mhz initially but the get_max_clock function returns 20Mhz, which as you say is mmc speeds, it could be a throwback or a typo or it could be that only mmc cards use the get_max_cloc...
by reggie
Wed Jun 06, 2012 7:10 pm
Forum: Troubleshooting
Topic: Sd cards, clock settings.
Replies: 2
Views: 2956

Sd cards, clock settings.

Hi All, I've been trying to understand the SD card issues that everyone seems to be having, hoping that everyone might join in who's also been looking at the code etc. to try and see what is happening/can be done. If there is another thread already open, point me to it and I'll contribute there. The...
by reggie
Wed Jun 06, 2012 1:16 pm
Forum: Advanced users
Topic: datasheets
Replies: 10
Views: 3757

datasheets

Hi all, just wondering if anyone has the extra emmc documentation SD3.0_Host_AHB_eMMC4.4_Usersguide_ver5.9_jan11_10.pdf referred to in the arm peripherals datasheet? http://www.raspberrypi.org/wp-content/uploads/2012/02/BCM2835-ARM-Peripherals.pdf It might go some way to helping people try and fix s...
by reggie
Tue Jun 05, 2012 2:14 pm
Forum: Troubleshooting
Topic: power, usb, sd and keyboard issues.
Replies: 9
Views: 1727

Re: power, usb, sd and keyboard issues.

The cable did shock me quite a bit, the cable in question was purchased from tesco and is an extension with multiple heads, it's only 1.8m, so length shouldn't have been an issue, I thought that for the price it'd be a decent cable, clearly not. I've still got the receipt, so that can go back and I'...
by reggie
Tue Jun 05, 2012 11:01 am
Forum: Troubleshooting
Topic: power, usb, sd and keyboard issues.
Replies: 9
Views: 1727

Re: power, usb, sd and keyboard issues.

Todays plan is to take the usb hub apart and check the circuit. I've had it apart before, unfortunately, the only thing I can remember about it is that it's using a 7805 or derivative to provide 5v regulation.
by reggie
Tue Jun 05, 2012 3:21 am
Forum: Troubleshooting
Topic: power, usb, sd and keyboard issues.
Replies: 9
Views: 1727

Re: power, usb, sd and keyboard issues.

I measured resistance on my f1/f2 fuses at 5.5/5.52ohms each with no power to the pi. But really, I shouldn't be experiencing any voltage drop at all using a powered hub, although it depends on how good the hub is apparently. I'll have to take it apart and see what's what! Glad to know that my usb c...
by reggie
Tue Jun 05, 2012 2:35 am
Forum: Troubleshooting
Topic: power, usb, sd and keyboard issues.
Replies: 9
Views: 1727

Re: power, usb, sd and keyboard issues.

Quick update, I've just tried a 2nd micro-usb cable, voltage using my known regulated supply is back up to a solid 5v across tp1 and 2, with the hub unplugged I'm getting 5.19v. I've also confirmed that the keyboard LEDs seems to be related to the distro, just retried with raspbian and the leds work...
by reggie
Tue Jun 05, 2012 1:22 am
Forum: Troubleshooting
Topic: power, usb, sd and keyboard issues.
Replies: 9
Views: 1727

power, usb, sd and keyboard issues.

Hi All, just thought I'd share my experiences with the pi so far. I have a 5v 1amp supply that will charge an iphone, it's an official apple product, as the polyfuse on F3 is only rated to 700ma (according to the marking on the polyfuse), this should've been sufficient. How wrong was I! I tried rasp...
by reggie
Mon Jun 04, 2012 2:01 pm
Forum: Troubleshooting
Topic: Did the Pi somehow break my TV?
Replies: 22
Views: 6585

Re: Did the Pi somehow break my TV?

I have a small amount of experience with those 7 port hubs, another tinkerer and I had these hubs from different places, and other hubs that use the same FE1.1 or FE1.2 chips. Your mileage will most certainly vary on the state of the inside of that hub. Your mileage will vary on the state of the pow...
by reggie
Sun Jun 03, 2012 9:07 pm
Forum: Troubleshooting
Topic: STICKY: Using the Troubleshooting Forum
Replies: 29
Views: 68494

Re: READ ME : Using the Troubleshooting Forum

I'd also like to add something to this if I may, it would also be useful for those that have the necessary kit and ability to post console logs if they have any errors and posting the result to pastebin, then adding the link to your error report. Over the last few days on the unofficial IRC channel ...
by reggie
Tue May 22, 2012 2:32 am
Forum: General discussion
Topic: A 5$ 1.5" LCD screen for all your projects !
Replies: 53
Views: 36630

Re: A 5$ 1.5

I think you'd be better off looking for a 3.5" or bigger screen on ebay that uses spi and has a controller on it. It's great hacking the little photoframes but the screen size is a bit pitiful at 1.5" :) There are already linux drivers out there for plenty of little screens, ilitek, himax etc.
by reggie
Sun May 20, 2012 11:53 pm
Forum: Camera board
Topic: Camera module! (And a picture of JamesH)
Replies: 431
Views: 155221

Re: Camera module! (And a picture of JamesH)

A few comments to answer some of the Q's above. To get a sensor manufacturer to even take your calls for a custom device you would need to sell in excess of 500k modules, more than likely over a million, otherwise the dev costs are prohibitive to the supplier. We cannot expect to sell that many. Ev...
by reggie
Sun May 20, 2012 2:49 pm
Forum: Camera board
Topic: Camera module! (And a picture of JamesH)
Replies: 431
Views: 155221

Re: Camera module! (And a picture of JamesH)

There are plenty of sensors out there that don't have IR filters on them. The majority of webcams that I've seen have the ir filter in the lens assembly and not on the sensor itself. canon DSLR cameras have a number of filters and stuff in front of their sensors, the ir filter can be removed with th...
by reggie
Sun May 20, 2012 2:11 pm
Forum: Camera board
Topic: Camera module! (And a picture of JamesH)
Replies: 431
Views: 155221

Re: Camera module! (And a picture of JamesH)

James, can you tell us what the lowest frame rate you can get out of the camera is? Is it possible to affect which stages of post processing the image goes through before the user gets their claws on it? Is it possible to do stills/long exposure images with the unit? I'm also interested in having t...
by reggie
Sun May 20, 2012 1:55 am
Forum: Camera board
Topic: Camera module! (And a picture of JamesH)
Replies: 431
Views: 155221

Re: Camera module! (And a picture of JamesH)

James, can you tell us what the lowest frame rate you can get out of the camera is? Is it possible to affect which stages of post processing the image goes through before the user gets their claws on it? Is it possible to do stills/long exposure images with the unit? I'm also interested in having th...
by reggie
Wed May 02, 2012 8:35 pm
Forum: Troubleshooting
Topic: ALSA drivers?
Replies: 36
Views: 10825

Re: ALSA drivers?

<t>Hi all, I'm probably a bit late to this party but have any of you jumped onto #alsa-soc on freenode?  Last time I was there a really helpful guy called Broonie helped me with a driver issue, the guy knows his beans!!  Might be worth asking if he'll take a look over the code to see if there's anyt...

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