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by zia_7575
Wed Jan 22, 2014 2:55 pm
Forum: Advanced users
Topic: Raspbian usb printer server using p910nd
Replies: 24
Views: 19234

Re: Raspbian usb printer server using p910nd

Hey everyone, I am unable to download the usblp.ko for 3.6.11+ from dropbox. I am very thankful, if anyone shares the file with me. Meanwhile, I tried to recompile the kernel and driver by myself. Everything goes smooth but usblp.ko is not present in modules/.... /usb/class folder. Can anyone help m...
by zia_7575
Thu Mar 07, 2013 9:52 am
Forum: C/C++
Topic: Qt cross developement
Replies: 9
Views: 12177

Re: Qt cross developement

Hey.. There is no error during compilation except few modules does not install like qtsensors, qt3d etc.. When I add path of qmake in qtversion. I get the error attached in pic.. and for ready-made stuff I added the two lines like this in apt.conf file.. Acquire::http::proxy "deb http://twolife.be/r...
by zia_7575
Wed Mar 06, 2013 11:19 am
Forum: C/C++
Topic: Qt cross developement
Replies: 9
Views: 12177

Re: Qt cross developement

Hey,

I follow the following tutorial.
http://qt-project.org/wiki/RaspberryPi_Beginners_guide

when I try to set up qt version in qt creator. It says that "qt version is not installed properly. please sudo make install".
please can anyone help me on this,.. :(

Regards,
Zia
by zia_7575
Wed Nov 21, 2012 11:41 am
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: SPI driver latency and a possible solution
Replies: 242
Views: 87705

Re: SPI driver latency and a possible solution

Hey, I return the pointer to userspace via following code in spidev.c int spidev_kmem(struct file *filp, struct vm_area_struct *vma) { //printk(KERN_ALERT "ZIA SPIDEV_KMEM STARTING"); int ret; long length = vma->vm_end - vma->vm_start; //printk(KERN_ALERT "ZIA length of Memory = %ld",length); /* che...
by zia_7575
Mon Nov 19, 2012 10:13 am
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: SPI driver latency and a possible solution
Replies: 242
Views: 87705

Re: SPI driver latency and a possible solution

yep . I didn't provide the dma_tx and dma_rx. can u guide me about how to use alloc_coherent function ? and I have to call it from userspace or spidev.c ? Any example ? U r rite about the use of DMA. I am not transferring too much data in single operation ..I just want to use DMA for learning purpos...
by zia_7575
Sat Nov 17, 2012 10:44 am
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: SPI driver latency and a possible solution
Replies: 242
Views: 87705

Re: SPI driver latency and a possible solution

Hey Martin,

I am using raspberry pi with ADS1298 chip .. I have applied your spi_low_latency patch. Interrupt works fine for me.. but whenever I try to use dma, I do not receive data.. plus there is no timeouts. Please help me to find the data and how can I trace it ?

Regards,
Zia
by zia_7575
Mon Nov 05, 2012 5:57 am
Forum: C/C++
Topic: Cross-compiling for 3.2.27 kernel
Replies: 2
Views: 855

Re: Cross-compiling for 3.2.27 kernel

Hey ,

I am cross compiling the kernel. I followed this link http://mitchtech.net/raspberry-pi-kernel-compile/.
Kernel successfully built and run on the board. but it fails to load any module as mouse and keyboard stop responding. Please guide me through this...Thanks.

Regards,
Zia
by zia_7575
Sat Nov 03, 2012 7:27 am
Forum: Debian
Topic: Kernel Cross Compilation on Wheezy
Replies: 1
Views: 1256

Re: Kernel Cross Compilation on Wheezy

Hey Steve, Try this link http://wiki.gentoo.org/wiki/Raspberry_Pi It will give u little bit more detail how to compile the resources and how to generate kernel.img. I followed all this, everything goes fine. Kernel boots up successfully but it failed to load any module even keyboard and mouse are no...
by zia_7575
Tue Oct 23, 2012 7:02 am
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: SPI driver latency and a possible solution
Replies: 242
Views: 87705

Re: SPI driver latency and a possible solution

hey,

What is difference between bcm2708_transfer_one_message_dma and bcm2708_transfer_one_message_dma_interrupts?

Regards,
Zia
by zia_7575
Fri Oct 19, 2012 5:24 pm
Forum: Linux Kernel
Topic: DMA and SPI and Interrupts - cant get it to work
Replies: 24
Views: 14763

Re: DMA and SPI and Interrupts - cant get it to work

Hey Martin,

I have little understanding of omap2_mcspi.c as i worked on beagleboard. They have similar interfacing for dma? Any idea?

Regards,
Zia
by zia_7575
Thu Oct 18, 2012 6:48 am
Forum: Linux Kernel
Topic: DMA and SPI and Interrupts - cant get it to work
Replies: 24
Views: 14763

Re: DMA and SPI and Interrupts - cant get it to work

hey,

I want to setup dma driver for spi interface. I have never done kernel programming before.
Can anyone help me, from where I start? Hoping for earliest response. Thanks.

Regards,
Zia

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