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by fangfufu
Mon Mar 13, 2017 9:41 pm
Forum: Advanced users
Topic: Does anyone use the UART pins and the SPI bus at the same ti
Replies: 2
Views: 657

Re: Does anyone use the UART pins and the SPI bus at the sam

edo1 wrote:I use both SPI and UART without any issue (and I2C as well)
Which Raspberry Pi do you have?
by fangfufu
Sat Mar 11, 2017 1:49 pm
Forum: Advanced users
Topic: Does anyone use the UART pins and the SPI bus at the same ti
Replies: 2
Views: 657

Does anyone use the UART pins and the SPI bus at the same ti

If I put
dtparam=spi=on
in my
/boot/config.txt
, my UART pins stop working, after booting up. The login prompts don't show up. Is anyone else experiencing the same problem?
by fangfufu
Fri Mar 10, 2017 1:58 am
Forum: Advanced users
Topic: Does Ethernet gadget mode still work on Raspberry Pi Zero W?
Replies: 8
Views: 3320

Does Ethernet gadget mode still work on Raspberry Pi Zero W?

I received my Raspberry Pi Zero W. I tried to configure it as a USB Ethernet gadget. It doesn't seem to be working. I tried following this tutorial: https://gist.github.com/gbaman/975e2db164b3ca2b51ae11e45e8fd40a This tutorial works fine for Raspberry Pi Zero v1.2 So has anyone else tried what I did...
by fangfufu
Mon May 23, 2016 4:09 am
Forum: HATs and other add-ons
Topic: Adafruit RGB 16x2 backlight colors with LCDproc
Replies: 5
Views: 1865

Re: Adafruit RGB 16x2 backlight colors with LCDproc

I don't think lcdproc has native support for the backlight control. A quick Google search led me to this thread.
by fangfufu
Mon May 23, 2016 3:28 am
Forum: HATs and other add-ons
Topic: Adafruit RGB 16x2 backlight colors with LCDproc
Replies: 5
Views: 1865

Re: Adafruit RGB 16x2 backlight colors with LCDproc

The last time I used my Pi Plate was probably 2 years ago. I did mess with lcdproc, but I can't remember if I messed with the backlight colour. I vaguely remember that if you don't ask lcdproc to turn the backlight on, you can manually change it to the colour you want. But I honestly can't remember ...
by fangfufu
Mon May 23, 2016 1:32 am
Forum: HATs and other add-ons
Topic: Adafruit RGB 16x2 backlight colors with LCDproc
Replies: 5
Views: 1865

Re: Adafruit RGB 16x2 backlight colors with LCDproc

I hope I am not breaking the forum rule by replying to a 2 year old thread. I suppose you are saying that basically LCDproc cannot control Adafruit LCD Pi Plate's backlight colour, right?

I am genuinely surprised that somebody is actually using my code... :shock: :D
by fangfufu
Sat Jan 02, 2016 1:20 pm
Forum: Debian
Topic: debian "jessie" build script
Replies: 8
Views: 2926

Re: debian "jessie" build script

That's normal behaviour for screen. Pressing Ctrl-d is the same as typing "exit". You're ending the process that is running in the screen session. Press Ctrl-a first, then press D to detach from the session. You don't need to press Ctrl - a... Have you read the manual? This is in the man page. C-a ...
by fangfufu
Sat Jan 02, 2016 12:39 pm
Forum: Debian
Topic: debian "jessie" build script
Replies: 8
Views: 2926

Re: debian "jessie" build script

That's normal behaviour for screen. Pressing Ctrl-d is the same as typing "exit". You're ending the process that is running in the screen session. Press Ctrl-a first, then press D to detach from the session. You don't need to press Ctrl - a... Have you read the manual? This is in the man page. C-a ...
by fangfufu
Sat Jan 02, 2016 11:00 am
Forum: Debian
Topic: debian "jessie" build script
Replies: 8
Views: 2926

Re: debian "jessie" build script

GNU Screen works in a weird way in the image generated using your script - detached screen terminals get terminated when you log out. To test this, you need to connect to your Raspberry Pi 2 via SSH, and then do the following: $ ssh $IP_ADDRESS $ screen # type in ctrl +d to detach your screen sessio...
by fangfufu
Tue Dec 29, 2015 9:55 pm
Forum: Debian
Topic: debian "jessie" build script
Replies: 8
Views: 2926

Re: debian "jessie" build script

Thanks, it is really useful.

I don't understand the dbus part. What does it do? Do I actually need it, if I am running my Raspberry Pi headless?
by fangfufu
Sun Mar 23, 2014 9:54 pm
Forum: General discussion
Topic: FlightAware's Flightfeeder box has Raspberry Pis inside them
Replies: 0
Views: 1527

FlightAware's Flightfeeder box has Raspberry Pis inside them

This thing apparently has Raspberry Pi inside them!
http://uk.flightaware.com/adsb/flightfeeder/

The evidence is here:
http://discussions.flightaware.com/ads- ... 17779.html

I suppose I shouldn't be too surprised...
by fangfufu
Mon Mar 03, 2014 10:25 pm
Forum: Advanced users
Topic: Doxygen generated documentation for BCM21553 Graphics Driver
Replies: 0
Views: 1026

Doxygen generated documentation for BCM21553 Graphics Driver

I have run Doxygen on the driver code released by Broadcom. I am not sure how useful these are. I have posted it here for whoever wants to use it.
http://www.fangfufu.co.uk/~fangfufu/brcm_doc/
I turned on both caller graph and call graph. This somehow results in a folder that's 4GB big.
by fangfufu
Wed Feb 19, 2014 2:25 pm
Forum: For sale
Topic: Raspberry Pi Weather Station Board
Replies: 16
Views: 17392

Re: Raspberry Pi Weather Station Board

hopalong wrote:web4robot is out of business.
What's this out of business thing about?
by fangfufu
Fri Oct 04, 2013 8:14 pm
Forum: For sale
Topic: Raspberry Pi Weather Station Board
Replies: 16
Views: 17392

Re: Raspberry Pi Weather Station Board

I wrote some user space program to replace the hwclock. No, it can't be used as rtc0, but you can write a RTC driver for it. I decided to replace the hwclock with my user space program instead. You can get my code at: https://github.com/fangfufu/Pi-Weather Be aware that the pressure reading is affec...
by fangfufu
Fri Sep 13, 2013 3:20 am
Forum: Advanced users
Topic: Kernel headers
Replies: 1
Views: 670

Kernel headers

Hello everyone,
Is the pre-compiled kernel headers available anywhere?
by fangfufu
Wed Sep 11, 2013 3:18 pm
Forum: Advanced users
Topic: core_freq seems to affect I2C clock speed.
Replies: 4
Views: 1130

Re: core_freq seems to affect I2C clock speed.

thanks dom!
by fangfufu
Wed Sep 11, 2013 2:52 pm
Forum: Advanced users
Topic: core_freq seems to affect I2C clock speed.
Replies: 4
Views: 1130

Re: core_freq seems to affect I2C clock speed.

I suppose I could filter out duff readings too, but that's just masking an underlying problem. I suspect core_freq affects other buses' speed. Apparently it could cause problem to SD card too. http://elinux.org/RPiconfig#SD_Card_Usage_with_Overclocking I will just lower the core_freq for now. I migh...
by fangfufu
Wed Sep 11, 2013 10:50 am
Forum: Advanced users
Topic: core_freq seems to affect I2C clock speed.
Replies: 4
Views: 1130

core_freq seems to affect I2C clock speed.

Hello guys, I bought one of those Web4Robot Weather Station Board (http://www.web4robot.com/PiWeather.html). Problem occurs when I set the core_freq in /boot/config.txt to 450. I get strange readings. When core_freq = 450: fangfufu@snowden:~/Pi-Weather$ ./Pi-Sensors Board Version: 1 Board Temperatur...
by fangfufu
Mon Sep 02, 2013 4:30 pm
Forum: HATs and other add-ons
Topic: C Library for Adafruit RGB LCD Pi Plate
Replies: 0
Views: 880

C Library for Adafruit RGB LCD Pi Plate

Hello guys,
I wrote a C library for Adafruit RGB LCD Pi Plate. Any comments and suggestions are welcomed.
Here is the link:
https://github.com/fangfufu/Adafruit-RPi-LCD
by fangfufu
Mon Aug 12, 2013 11:08 pm
Forum: Advanced users
Topic: Where can I find "rpi-backend.so"
Replies: 7
Views: 2145

Re: Where can I find "rpi-backend.so"

ffmpeg is not in Raspbian repository, mate. Debian switched to libav a while ago now. I think it was due to some dispute within the ffmpeg development team.
by fangfufu
Mon Aug 12, 2013 3:13 pm
Forum: Advanced users
Topic: Where can I find "rpi-backend.so"
Replies: 7
Views: 2145

Re: Where can I find "rpi-backend.so"

How do you know for certain why it won't work for armel? How about people who use Arch Linux? I simply can't locate that file. I am pretty sure the problem will be solved if I can find that file. I use Debian because I like the ffmpeg from the deb-multimedia repository. I don't want to have to compi...
by fangfufu
Mon Aug 12, 2013 10:26 am
Forum: Advanced users
Topic: Where can I find "rpi-backend.so"
Replies: 7
Views: 2145

Re: Where can I find "rpi-backend.so"

I rebooted, and it complains that file is missing. I am not using Raspbian. I am using Debian armel. I did not boot into the normal X environment.
by fangfufu
Mon Aug 12, 2013 9:30 am
Forum: Advanced users
Topic: Where can I find "rpi-backend.so"
Replies: 7
Views: 2145

Where can I find "rpi-backend.so"

I am trying to get Wayland Weston working on my Raspberry Pi. I use Debian armel, so I have to compile the whole thing. I followed the instruction at http://wayland.freedesktop.org/raspberrypi.html. The whole thing compiled succesfully. However when I try to launch Weston, the following error messag...
by fangfufu
Thu Apr 25, 2013 5:24 pm
Forum: For sale
Topic: Raspberry Pi Weather Station Board
Replies: 16
Views: 17392

Re: Raspberry Pi Weather Station Board

I bought one, my air pressure is wrong. It is reported to be 89.1 kPa, but it should be around 100kPa.
by fangfufu
Thu Sep 20, 2012 6:58 am
Forum: Advanced users
Topic: Overclocking
Replies: 1125
Views: 594604

Re: Overclocking

Dom, it seems that overvolting and using the performance governor doesn't void the warranty. You might want to address this problem. Also the new turbo mode (1000MHz ARM, 500MHz core, 500MHz SDRAM, 6 overvolt) is unstable for my particular Pi. My stress test method is running, dd if=/dev/zero | ssh ...

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