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 5 of 14 << < 34567 > >>
Topics
 Replies
 Views
 Last Post
0 Replies and 1164 Views Problems with DVFS in linux  1164  0 Started by  snewman Can anyone confirm for me if DVFS is really working with linux (any linux) on the litekit right now and if so what your configuration is I am 99.99 certain I had it working with poky/2.6.19.2 but BogoMIPS is always reported as 398.13.
0 1164
11 Jun 2008 12:46 PM
2 Replies and 1273 Views DI Display 3 Time Configuration Register  1273  2 Started by  juanluna Hi guys, I dont understand DI_DISP3_TIME_CONF, (what does DISP3_IF_CLK_PER_WR mean, and its purpose). I am setting a new custom display, but I dont know how to set the right value for the Display clock. Can somebody help me
2 1273
by  juanlunaJump to last post
07 Jun 2008 09:30 AM
1 Replies and 1259 Views 3.5-qvga-10 Display problem with DirectFB  1259  1 Started by  dkudlay I am running into a strange issue when running my GTKDirectFB app. The screen is offset high by about 10 pixels and the colors are washed out. If I terminate the app, the frame buffer image left on the screen looks correct however. I tried to adjust the screen position via software but it seems the bottom 10 pixels are not accesible. Has anyone ran into something similar
1 1259
by  dkudlayJump to last post
23 May 2008 10:07 AM
1 Replies and 1238 Views Running OpenGL on LogicPD with iMX31  1238  1 Started by  Deleted User I have a Linux BSP for IMX31 ADS board (from freescale site) and I did some porting to use this BSP for the LogicPD IMX31 LITEKIT board. I did not succeded to run the PVR script (running the GPU (MBX) driver) . Can anyone help Pls.
1 1238
by  dkudlayJump to last post
22 May 2008 03:44 PM
1 Replies and 1256 Views What exactly does LoLo setup?  1256  1 Started by  RossLeppard Hi, I've been trying to do some benchmarking on my LITEKIT and one issue I've run into is finding out exactly what is setup by LoLo (version 2.3.5 on my board) in terms of clockspeeds, cache, memory, interrupts etc. The code I'm running is some fairly simple calculations, quite floating point heavy and also with a lot of memory accesses and on the memory access especially I don't seem to be getting close to the sort of performance I would expect. My program is written in C and I'm using the G...
1 1256
by  RossLeppardJump to last post
22 May 2008 12:37 PM
0 Replies and 1386 Views MPEG4 encoder  1386  0 Started by  Deleted User Hi all, I am trying to use the hantro MPEG4 encoder on imx31 litekit. I am not able figure out how to setup the system, how to give input and take output from it and also memory allocation related stuff. Has anyone used this Any success with it Please share. Thank you, Arjun
0 1386
22 May 2008 04:29 AM
0 Replies and 1169 Views Addressing external devices with FAST_nCS - SOLVED!  1169  0 Started by  rbunce I'm having a problem getting FAST_nCS to work. According to the hardware specification, FAST_nCS is active when nCS4 is active, and address 23 is high, and the schematic logic confirms this behaviour. Even with the simplest possible code (below), running stand-alone under LoLo, FAST_nCS stays high. (The same thing happens under Linux.) Tracing the signals with a 'scope shows that nCS4 is going low when it should, but A23 never goes high. This gates off FAST_nCS and U31 pin 3 is always high. I've...
0 1169
21 May 2008 07:38 AM
3 Replies and 1263 Views Input/output error when using /dev/dsp  1263  3 Started by  Deleted User Hi I receive a Input/output error when trying to play sound in any way (tested media players as well as cat to /dev/dsp). I've traced the error to the kernel driver for the PCM parts (snd_pcm_lib_write1() in sound/core/pcm_lib.c) where the code is waiting for a signal that never fires. My guess is that the signal is linked to an interrupt that never reach the driver. Something wierd: We had problems mounting the rootfs over nfs (1 out of 10 tries worked). If nfs was mounted with the tcp flag i...
3 1263
by  Deleted UserJump to last post
19 May 2008 11:24 PM
1 Replies and 1282 Views Using CSPI1 on imx31 lite  1282  1 Started by  LauraM I'm attempting to access the CSPI1 port on the imx31 lite. I am setting the regs as shown below and the program appears to run but I'm not seeing any activity on the spi_clk pin on the expansion board. spi_ctl = 0x51fa3 (master mode, 32 bit) spi_status before write = 3 spi_status after write = 0x103 gpr = 0 sw_mux_ctl_cspi1_ss2_cspi1_sclk_cspi1_spi_rdy_cspi2_mosi = 0x12121212 sw_mux_ctl_cspi1_mosi_cspi1_miso_cspi1_ss0_cspi1_ss1 = 0x12121212 not using interrupts or dma. Any clues I'm running...
1 1282
by  physicsengJump to last post
19 May 2008 01:29 PM
9 Replies and 1221 Views request for LTIB V3 iso (Linux 2.6.19)  1221  9 Started by  tombrus My board still does not boot correctly with the Linux 2.6.22 kernel. I have indications that a 2.6.19 kernel can boot correctly, but I can not build it. I need the LTIB V3 iso but I can not find it on the Freescale site. All I see is the LTIB V5b iso which contains the 2.6.22 kernel. It would make me very happy if someone could mail that LTIB V3 iso to me: tombrus at gmail. Thanks, Tom
9 1221
by  snewmanJump to last post
16 May 2008 04:15 PM
7 Replies and 1421 Views Is Lolo 2.4 really working ?  1421  7 Started by  olco Hi, I'm using a imx31 SOM module ( P/N 1006581, silicon rev 1.2 ) with Lolo 2.3.5p I have not visible issue with it. I tried to use the new version 2.4 ( only to have sd/mmc fatfs access at boot-up ) and now I've got a lot of weird behavours at linux boot : - ethernet PMIC and sd/mmc do not initialized well ( randomly ) - boot sequence lockup To summarize : - is the new lolo 2.4 compatible with my module - I buy it in feb 2008, is it normal that I received a pilot version - I downgr...
7 1421
by  olcoJump to last post
09 May 2008 09:55 AM
7 Replies and 1314 Views OpenGL ES 1.1 MX31 Linux - Driver  1314  7 Started by  dkudlay Has anyone managed to get OpenGL to run on MX31L or MX31 We have MX31L and a compatible Linux BSP, but have had trouble tracking down the drivers to enable the hardware acceleration with GPL. Any success, or failure stories would be much appreciated. Thank you.
7 1314
by  BadguyJump to last post
08 May 2008 10:24 AM
6 Replies and 1374 Views LTIB V3 (2.6.19) problem with LEAVE SOURCES  1374  6 Started by  tombrus The LEAVE SOURCES option does not work for me on the LTIB V3 (Linux 2.6.19) iso. What I do: mount ISOrun installltib -cselect "Leave the sources after building" what I get is:Quote: make ARCH=arm CROSS_COMPILE= HOSTCC=/usr/bin/gcc -B/usr/bin// zImage scripts/kconfig/conf -s arch/arm/Kconfig CHK include/linux/version.h SYMLINK include/asm-arm/arch -> include/asm-arm/arch-mxc make&911&93: `include/asm-arm/mach-types.h' is up to date. CHK include/linux/utsrelease.h ...
6 1374
by  DrOctaviusJump to last post
30 Apr 2008 04:19 PM
3 Replies and 1332 Views test aplication for imx31 mpeg encoder  1332  3 Started by  Deleted User Hi, Can anyone share a test application to test the mpeg4 encoder on imx31 Or if there is no test application available, can anyone tell me some useful tips to write a test application to test the encoder Thanks, Arjun
3 1332
by  macneibfallonJump to last post
30 Apr 2008 10:53 AM
1 Replies and 1167 Views Waking from low power states  1167  1 Started by  mattwick Has anyone successfully used a GPIO to wake up out of a low power mode We are able to enter the mem power state and we've registered our irq such that it is being handled during this low power state, but we can't seem to get our irq to wake the kernel. Here are the functions that we're using to setup our irq. mxc_request_iomux(MX31_PIN_SCK6, OUTPUTCONFIG_GPIO, INPUTCONFIG_GPIO); gpio_config(PORT, PIN, false, GPIO_INT_RISE_EDGE); gpio_request_irq(PORT, PIN, GPIO_LOW_PRIO, our_irq_handler, IRQ_...
1 1167
by  mjm2781Jump to last post
29 Apr 2008 09:16 AM
1 Replies and 1176 Views Newer i.mx31 SOM not working with Swell software  1176  1 Started by  Fred Dyer We recently purchased two i.mx31 SOM's that are not functioning with our application written for Swell Software. The two new SOM's not working have a chip labeled 1008130 Rev D. An older SOM that does work fine has a chip labeled 1007662 Rev A. All are using LoLo 2.3.5 What's happening Thanks! Fred
1 1176
by  Fred DyerJump to last post
25 Apr 2008 01:03 PM
0 Replies and 1102 Views hantro mpeg encoder - CRM_MCU_BASE_ADDR  1102  0 Started by  Deleted User Hi all, I am using imx31 litekit. I am trying to use the hantro mpeg encoder. I am getting an error in the device driver for the hardware while building. It say: "error: 'CRM_MCU_BASE_ADDR' undeclared (first use in this function)" CRM_MCU_BASE_ADDR is not declared anywhere in the source. Please can anyone tell the value/source of CRM_MCU_BASE_ADDR Thanks, Arjun
0 1102
23 Apr 2008 12:35 AM
1 Replies and 1149 Views NVCC3 is over voltage  1149  1 Started by  freem Logic When LOLO boots, NVCC3 is set to 2.8V. However, I have found NVCC3 is getting set to 3.3V by Window CE after it boots, this is not good. Max voltage on NVCC1 and NVCC3 - NVCC10 rails is 3.1V. PS Any answers on my last post yet
1 1149
by  freemJump to last post
17 Apr 2008 01:34 PM
5 Replies and 1270 Views Problems running some floating point benchmark code  1270  5 Started by  RossLeppard Hi all, I'm trying to get some simple floating point benchmark code to run on my LITEKIT board but I'm getting nowhere fast and am running out of ideas. I'm using the sample application, LED_Flasher, that came with the board as a starting point and I've got my code working by just inserting it into the example. For the level of accuracy I need just running the code 100 times and toggling the LED and timing it by stop watch is fine for the moment. I've used the 'exec' LoLo command and ...
5 1270
by  tombrusJump to last post
16 Apr 2008 07:27 AM
3 Replies and 1147 Views Linux - Testing the touchscreen  1147  3 Started by  olco Hello, I'm at the end of testing and debugging the LiteKit with the Freescale linux BSP rel 3 (linux 2.6.19.2 SPI/PMIC patch) . I'm using the 10.4 display kit. Most of the board is working ( video, audio, etc..) I have still an issue with the Touch screen. It is not working. Below it is the result from the test tool software. It is always the same results, except that randomly there is some "0". I don't know if it is an sofware or hardware issue. may someone have any hints regard...
3 1147
by  olcoJump to last post
10 Apr 2008 06:41 AM
You are not authorized to create a new topic
Page 5 of 14 << < 34567 > >>


RSS Feed Available