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by the_summer
Wed Jan 20, 2016 9:57 pm
Forum: Bare metal, Assembly language
Topic: Start bare metal programs using u-boot
Replies: 7
Views: 4801

Re: Start bare metal programs using u-boot

Hm, I haven't managed to make any progress in this matter.
Would you be able to just upload your uboot.img-file. Then I could check if I did something wrong setting up uboot or if my programs are not correctly linked.

Cheers,

Jan
by the_summer
Mon Dec 28, 2015 5:34 pm
Forum: Bare metal, Assembly language
Topic: Start bare metal programs using u-boot
Replies: 7
Views: 4801

Re: Start bare metal programs using u-boot

Thank you very much. I will see what I can find out about the linker scripts. I assumed that the generated binaries would work fine, because they do if I simply copy them to the sd-card as kernel.img and they work with dwelch67's bootloader which simply writes the binary file from serial port to add...
by the_summer
Mon Dec 28, 2015 3:56 pm
Forum: Bare metal, Assembly language
Topic: Start bare metal programs using u-boot
Replies: 7
Views: 4801

Re: Start bare metal programs using u-boot

For the entry address in the mkimage command I tried both 0x8000 and 0x8040 (I found this address using readelf). It did not change anything. The "go" command I only used when dealing with a raw binary after arm-rtems4.11-objcopy. Could you describe how you postprocess your elf-files and how you loa...
by the_summer
Sat Dec 26, 2015 1:35 pm
Forum: Bare metal, Assembly language
Topic: Start bare metal programs using u-boot
Replies: 7
Views: 4801

Start bare metal programs using u-boot

Hi, I am trying to run an RTEMS application on the B+ using u-boot. I build u-boot following the guide on http://elinux.org/RPi_U-Boot using Steve Warren's branch and mainline. The tftp-server is running and I can load the binaries from withing u-boot. However so far I failed to execute them. An RTE...
by the_summer
Mon Dec 08, 2014 7:43 pm
Forum: Deutsch
Topic: Gertboard manual in Deutsch
Replies: 0
Views: 1010

Gertboard manual in Deutsch

Hallo, ein Bekannter hat sich die Mühe gemacht und die User Manual fürs Gertboard ins Deutsche übersetzt. Sie kann hier als pdf heruntergeladen werden: http://softwareentwicklung-busch.de/download.html Ich poste es hier einfach mal, damit google eine Chance hat das zu finden ;) Korrekturen und Verbe...
by the_summer
Sun Nov 30, 2014 4:36 pm
Forum: OpenGLES
Topic: (Un)Packing integer variables to textures
Replies: 3
Views: 2332

Re: (Un)Packing integer variables to textures

That's it! Thank you very much.
Now I am able to pack integers up to at least 24bit.
by the_summer
Sat Nov 29, 2014 5:01 pm
Forum: OpenGLES
Topic: (Un)Packing integer variables to textures
Replies: 3
Views: 2332

Re: (Un)Packing integer variables to textures

To bump this thread again, I created a small test program which creates the EGL-context, runs the OpenGL shaders and checks the output. Maybe this makes it easier for others to reproduce the issue. If I run this program on my desktop machine with Intel graphics then everything works fine (i.e. no ou...
by the_summer
Sun Nov 16, 2014 4:05 pm
Forum: OpenGLES
Topic: (Un)Packing integer variables to textures
Replies: 3
Views: 2332

(Un)Packing integer variables to textures

Hi all, I want to do some multipass integer operations (basically additions and multiplications). Thus, I need to pack my integer values somehow into the rgba-texture, so that I can use them as input in the next pass, but I have quite a lot of problems to pack and unpack the values properly on the p...
by the_summer
Thu Aug 28, 2014 1:00 pm
Forum: For sale
Topic: Proto Armour for Raspberry Pi B+
Replies: 8
Views: 4771

Re: Proto Armour for Raspberry Pi B+

Hi, are there any news on the Proto Armour with the C/CS mount which is mentioned here: http://www.mobileappsystems.com/blog/camera-module-part-1 This looks exactly like what I am looking for. My project moves forward slowly, so I can wait for a few months, but it would be nice to know if you have p...
by the_summer
Tue May 13, 2014 2:24 pm
Forum: HATs and other add-ons
Topic: Gertboard user manual raw files
Replies: 0
Views: 1820

Gertboard user manual raw files

Hello, my grandfather recently got a gertboard for his raspi. He knows a lot about electronics and now wants to get a bit further into the programming side. The problem is that he does not know English. We thought we could help him by translating some parts of the user manual to German for him. Ther...
by the_summer
Sun Dec 09, 2012 1:49 pm
Forum: Troubleshooting
Topic: Problem with TP-Link TL-WN722N
Replies: 29
Views: 13364

Re: Problem with TP-Link TL-WN722N

Hi,

As I already wrote in the USB redux thread, I have the same problemm with a TL-821N.
Could it also be that it is a problem with the ath-driver? Has anyone tried of the problem is solved when using a kernel from the 3.6-branch?
by the_summer
Fri Nov 30, 2012 10:06 pm
Forum: Troubleshooting
Topic: USB redux
Replies: 514
Views: 213922

Re: USB Problem?

Another person and myself are getting similar issues from two different usb wifi interfaces. Could this be a usb issue? http://www.raspberrypi.org/phpBB3/viewtopic.php?p=218254#p218254 If it conforms to the types of problems USB has, please tell me what debugging info is needed. Thanks. I think I h...
by the_summer
Mon Aug 20, 2012 8:16 pm
Forum: Other projects
Topic: Xenomai Patch for Raspberry Pi
Replies: 12
Views: 15045

Re: Xenomai Patch for Raspberry Pi

Same here.
I also compiled the bootc-kernel for Raspbian.
Works fine so far.
Without load the latency is even better (1-2 us).

Has anyone made even more progress yet (I have been on vacation the last 2 weeks)?
by the_summer
Mon Apr 23, 2012 3:10 pm
Forum: HATs and other add-ons
Topic: Gertboard
Replies: 258
Views: 111212

Re: Gertboard

Don't want to look impatient, but are there any news yet?
by the_summer
Mon Mar 19, 2012 11:03 am
Forum: HATs and other add-ons
Topic: Gertboard
Replies: 258
Views: 111212

Re: Gertboard

<t>Gert said:<br/> <br/> <br/> Sorry no, there is no 2-wire interface.  Neither is there an I2C interface.<br/> <br/> <br/> Is it possible to reprogram the pins of maybe the DAC on the avr to work as a TWI/I2C?<br/> The reason why I ask is, that we have quite some sensors (e.g. magnetometer, gyroyco...
by the_summer
Mon Mar 19, 2012 10:00 am
Forum: HATs and other add-ons
Topic: Gertboard
Replies: 258
Views: 111212

Re: Gertboard

<t>Looks great Gert. I'm really looking forward to it. You finally got me to register <br/> <br/> I have a question about the avr:<br/> Will it be possible to access/control the ADC and the PWM  with the avr microcontroller or only via the RPi?<br/> <br/> And does the board have a two wire interface...

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