Search

Technical Discussion Group Forum

This forum is provided for user discussion. While Logic PD support staff and engineers participate, Logic PD does not guarantee the accuracy of all information within in the Technical Discussion Group (TDG).

The "Articles" forums provide brief Articles written by Logic PD engineers that address the most frequently asked technical questions.

To receive email notifications when updates are posted for a Logic PD product download, please subscribe to the TDG Forum of interest.

Search this forum:
Search
You are not authorized to create a new topic
Page 3 of 6 << < 12345 > >>
Topics
 Replies
 Views
 Last Post
2 Replies and 1313 Views kernel panic: no init found...  1313  2 Started by  tozyagcilar Hi, I think I have followed all the instructions on the 'LH79520-10: Installing the Lineo BDK and Logic Linux Source Tree' document. However, when I try to boot from CompactFlash I get a kernel panic that tells me the following: RAMDISK: Couldn't find valid RAM disk image starting at 0. Freeing initrd memory: 16384K EXT2-fs warning: mounting unchecked fs, running e2fsck is recommended VFS: Mounted root (ext2 filesystem). Freeing init memory: 76K Warning: unable to open an initial console. Ker...
2 1313
by  tozyagcilarJump to last post
23 Mar 2005 02:39 PM
1 Replies and 1176 Views JTAG Raven  1176  1 Started by  miguelgu Anyone have used JTAG RAVEN from Macraigor in kernel debug in Zoom Development Jit LH79520 Can post the gdbinit used for it Thanks a lot.
1 1176
by  Jump to last post
14 Mar 2005 01:00 PM
1 Replies and 1251 Views LH79520 and uClib  1251  1 Started by  marius.tannum@power-one.c Hello, I have tried to compile 2.4.17-rmk2 (with the patches: patch-2.4.17-rmk2-lineo-*) using an existing uClibc cross compiler v. 0.9.11 . I have been using this cross-compiler for an arm720 before (cirrus 89712). I placed the VMLINUX file on a compact flash and tried to load without success (se error message below). Is it possible to compile the kernel and lineo patches with uClibc Thanks, Marius Tannum ******** losh error message ******** losh> load elf VMLINUX loading from /f/VM...
1 1251
by  Jump to last post
21 Feb 2005 02:39 PM
1 Replies and 3932 Views IAR EWARM and startup code  3932  1 Started by  Patrick Perdu Hi all, I recently had questions here about SDRAM initialization and startup consideratins. I figured it out so I would like to ensure at least taht nobody blocks stupidly as I did. Here is the CStartup.s79 file I ended with. Please note tnhat the stacks are not initialized, the interrupt vectors are neither. All this must be done, I elected to do it in C in the low_level_init() function called by IAR system after (very) low level init. Of course to init the vectors, we need to have them in RA...
1 3932
by  Jump to last post
15 Feb 2005 12:48 PM
5 Replies and 1250 Views code samples  1250  5 Started by  alan.ambrose Hi, Can anyone direct me to some straight forward code samples for display handling (e.g. squirting a bitmap at the display) and/or tcp comms Also is there a recommendation for which jtag works with the GNU tools (if any) and how to set it up. Alternatively, a better development environment / jtag combination Alan
5 1250
by  Patrick PerduJump to last post
26 Jan 2005 10:44 AM
2 Replies and 1255 Views Does touchscreen work ?  1255  2 Started by  miguelgu Working with Linux BSP from LogicPC it's a little hard. I want to use the touchscreen to evaluate a new design and I it doesn't work fine. It's imposible to calibrate. Anyone know any bug with touchscreen Or I have missed some configuratiion with the development kit !. Please Logic, help to use your development kit. It will be very disappointing to discard this board if the touchscreen doesn't work.
2 1255
by  miguelguJump to last post
04 Jan 2005 04:29 AM
1 Replies and 1164 Views unable to open /dev/flash0 for burn  1164  1 Started by  Brian Hi - I have been developing an ABL application for the 79520 for a while now. I am at the point where I would like the application to execute out of flash ram. I returned to the original sample applications in order to see what changes are needed to make an application work from flash memory. the sample_RAM application compiles, downloads to ram, and then run's fine. But the sample_FLASH application compiles, downloads to ram, but then, when I execute the BURN command I get 'unable to open /de...
1 1164
by  Jump to last post
03 Jan 2005 11:27 AM
4 Replies and 1191 Views compact flash filesystem problems  1191  4 Started by  Deleted User Trying to figure out what's wrong with this picture (see output below) booting Linux from onboard flash, using compact flash loaded root filesystem (I formatted the cflash as ext2 and used .../Embedix/.../dev_image ) javascript&058;emoticon(':twisted:') -------------------------------------------------- losh> exec 0x40100000 - root=/dev/hda1 kernel cmdline: 'root=/dev/hda1' at 200c0100 jumping to: 40100000... Uncompressing Linux.............................................. done, booting th...
4 1191
by  Deleted UserJump to last post
18 Dec 2004 03:28 AM
4 Replies and 1130 Views PPP working?  1130  4 Started by  miguelgu Is there anyone who has made a ppp conection (using uart B in LH79520 Zoom Development Kit) work It seems to be imposible, after the modem gets CONNECT, it only send 8 bytes through serial port !!!!! of the first PPP frame. 7E Start of Frame FF Address 7D 23 Control (escaped) C0 21 Protocol PPP LCP 7D 21 Conf Request (escaped) After these bytes the serial port shut up. Of course I've configured both serial port and modem to work without signals control (CTS/RTS) (there is not control signals...
4 1130
by  miguelguJump to last post
15 Dec 2004 08:56 AM
1 Replies and 1158 Views Problem with mmap() & noncached memory  1158  1 Started by  Deleted User How do I memory map(mmap()) a region to user space as noncachable memory The problem appears to be that the system has mapped the memory range as cacheable and caching needs to be disabled. I have written a device driver that exports a mmap() function that maps the appropriate region as follows- if (remap_page_range(vma->vm_start, offset, vma->vm_end - vma->vm_start, pgprot_noncached(vma->vm_page_prot))) return -EAGAIN; Any help would be greatly appreciated...
1 1158
by  Jump to last post
07 Dec 2004 04:29 PM
1 Replies and 1149 Views Question : PPP works in Sharp Zoom SDK w/LH79520-10 ?  1149  1 Started by  miguelgu The serial device /dev/ttyAM0 is working ok at 9600 baud. After /usr/sbin/chat finish the comunication with the modem and get CONNECT answer form the modem the pppd create a new ppp interface and attach to serial port, ie: ppp0 <--> /dev/ttyAM0. The problem is that only 8 bytes are output from serial port to the modem. Anyone can help me Someone can tell me if ppp is working with this platform Kernel : 2.4.17-rmk2-lineo5 pppd: 2.4.1 Thanks in advanced.
1 1149
by  miguelguJump to last post
07 Dec 2004 10:23 AM
4 Replies and 1137 Views logicpd hacked BDK scripts 1.0.0b vs. 1.0.0c?  1137  4 Started by  JadePhoenix Greetings! while downloading logicpd's hacked bdk scripts i noticed the website says '1.0.0c' while the download is 1.0.0b Quote: 6/25/2004 lpd linux LLH79520 1.0.0c.tgz .tgz 29.09 Mb The link tells 1.0.0b: Quote: http://www.logicpd.com/downloads/152/lp ... 1.0.0b.tgz When/where is the updated 1.0.0c available Does it incorporate the changes other users already mentioned/fixed manually (like http://www.logicpd.com/support/tdg/viewtopic.phpt=22 ) Regards
4 1137
by  Jump to last post
29 Oct 2004 06:38 PM
5 Replies and 1283 Views Do I Have A Wrong Version of BDK or What?  1283  5 Started by  Kenneth Lerman My BDK is ’02101lh9520bdk.iso’ The patch file I downloaded contained: lpd-linux-LLH79520-02.tgz The 'white paper' refers to: tar xzvf lpd-linux-LLH79520-04.tgz Clearly NOT the same, but I downloaded it today, so what the heck, I continued. The tar command worked fine... sort of. But the file ownership was messed up because the owners of some of the files were not root and I was running as root. (I bet there is another switch to tar that will set the owner to me even if I'm root.) So I did ...
5 1283
by  mike teschJump to last post
21 Oct 2004 06:14 PM
1 Replies and 1160 Views ANSWER: NFS Hogs The System and Causes Screen Tearing  1160  1 Started by  Kenneth Lerman Updated: 1 October 2004 -- (Partial) Answer: Screen tearing is caused by the fact that the processor is not fast enough to support the refresh rate. Reducing the refresh rate to 40 Hz solves the problem -- at the cost of some flicker. 50 Hz did NOT solve the problem. I'll try 45 Hz when I get a chance. ------------------------------------ Original post is below ------------------------------------ I'm copying a largish (3.5meg) file from an NFS mounted file system to root. (1) It is tak...
1 1160
by  Kenneth LermanJump to last post
24 Sep 2004 04:02 AM
1 Replies and 1129 Views Kernel OOPS  1129  1 Started by  Kenneth Lerman This was either while I was nfs copying a file to / or when I tried to (un)tar it. I had been using an ext3 file system, and the error seems to be in kjournald. Anyone seen this before Ken Unable to handle kernel paging request at virtual address c2000000 pgd = c09c0000 *pgd = 00000000, *pmd = 00000000 Internal error: Oops: 0 CPU: 0 pc : &91<c0188068>&93 lr : &91<c0187f94>&93 Not tainted sp : c03a7d94 ip : c03a7d94 fp : c03a7db4 r10: 00000096 r9 : 0000001e r8 : 000...
1 1129
by  Kenneth LermanJump to last post
24 Sep 2004 03:59 AM
1 Replies and 1157 Views Cannot enable IntEnable and disable I flag of CPSR  1157  1 Started by  shihctseng My application does not need Linux. I wrote my own assember software from scratch. I use a software tool to convert elf file to srec file. I used the following commands to run my program: load srec from File Menu: <File> <Send file> filename <Open> jump 0x8000 The program run very well but the problem is I could not set '1' to any bit of IntEnable and also I cound not set '1' to the I flag of CPSR. The program is running in supervisor mode. It looks like the interruption is ...
1 1157
by  Kenneth LermanJump to last post
22 Sep 2004 10:48 AM
1 Replies and 1120 Views Qt 3.3.2 touchscreen  1120  1 Started by  mike tesch A general FYI for using Qt3 on the 79520 Linux package: We have a user who has ported Qt 3.3.2 to the 79520 kit. He found that in order to get the touch screen working correctly he had to modify the file qt-3.3.2/src/embedded/qmouselinuxtp_qws.cpp in the same way that the Qt 2.3.2 file qt-2.3.2/src/kernel/qwsmouse_qws.cpp was modified by the Lineo patches. mt
1 1120
by  Kenneth LermanJump to last post
22 Sep 2004 10:46 AM
1 Replies and 1156 Views How Can I Build My Own "Motherboard"?  1156  1 Started by  Kenneth Lerman I'd like to build my own board which acts as a motherboard for the Card Engine. But I don't have anything documenting the physical footprint of the card engine. I have artwork, but clearly a pdf file is not a reasonable way to generate the measurements I require. A set of Gerber files would work, but my preferred format would be 'Eagle' format. That way I could just incorporate it into my design. Another problem, of course, is that I'm not really setup to build boards with surface mounted c...
1 1156
by  Jump to last post
20 Sep 2004 12:19 PM
1 Replies and 1116 Views Problem with TOUCHSCREEN  1116  1 Started by  Kenneth Lerman I run the paint program. Then select a color. When I touch the screen, the point I touch gets a pixel set, and then as long as I hold the touch, other pixels are set -- usually in an area about half and inch to the right and 3/8 of an inch above the point I touched. They form a 'cloud' in that area. I assume this is a bug. -- although it could be a feature. More Info: I've written a program to print the raw data from the touchscreen. The results show roughly the behavior I've seen: (1...
1 1116
by  Kenneth LermanJump to last post
20 Sep 2004 09:19 AM
11 Replies and 1215 Views LOLO crash while TFTPing ELF Linux 2.6.x kernel image  1215  11 Started by  JadePhoenix Grettings! lately i'm trying to get some arm kernels working again, using crosstool (http://www.kegel.com/crosstool/). I've built a crosschain with gcc-3.4.0, glibc-2.3.2 (softfloat) and did some helloworld and a small part of glibc regression tests (sucessful). I've mounted the new libaries (glibc) with NFS like 'lib-new' and use the dynamic loader approach 'ld-linux.so.2 --library-path /lib-new <target>' to run the applications (so it doesnt clobber with already build glibc from embedi...
11 1215
by  mike teschJump to last post
19 Sep 2004 03:14 AM
You are not authorized to create a new topic
Page 3 of 6 << < 12345 > >>


RSS Feed Available