jpiat
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Hi, if the main advantage you see in the UDOO platform is the IMX6, you should consider using http://www.solid-run.com/products/hummingboard/ as its expansion port is pin compatible with the raspberry-Pi and should play well with the LOGI-Pi. Anoth…
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Hi, no sure this can easily be interfaced with the FPGA as there is a good chance this uses WebGL or OpenGL and take advantage of the browser interpreter (cannot be offloaded to the FPGA easily). SimpleCV seems like a better candidate as its based …
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Hi, do you have any idea of the algorithm/method you want to use for this purpose ? Human following would require human detection (usually performed through classification or by using special tags) and target tracking. Running this task on the logi-…
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Hi, the device-tree files are inspired by the spi device tree overlay available in the kernel sources. I'am not sure if the pull-up are required but the experienced proved me that we should stick to what works ..; an example of this is that the clo…
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Hi, the processing time is the image acquisition time, as no more than two lines of the image are stored for processing. So as soon as the last pixel of the image is received, the line is detected. The current version of the project is only using Q…
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Hi, Glen's code works with the old version of the loader that used bit-banged programming interface the new loader now uses SPI (cleaner and faster) and requires to change the device-tree overlay. The updated BB-BONE-LOGIBONX-SLOW.dts file can be f…
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Do you want the FPGA to generate an interrupt to the begalebone ? I already did this in the past (with Angstrom and no device-tree ...) and with newer versions of the software of BBB you have two ways to do this : 1) you can modify the device tree …
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Your best take on this is to use a NFS mount on a PC. This way your PC (linux based is best case) can dedicate a directory to host files that can be visible from NFS clients. You then just have to setup NFS on each of your beaglebone-black so that …
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Hi, this behavior appeared quite recently as older distribution would just boot from sd card if sd card has a bootloader and fall-back to emmc in case the sd card is not a bootable image. The behavior is now to try to boot from emmc then fallback t…
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You are right, the kernel for beaglebone black jumped from 3.8 to 3.14 and the cape support is moving slowly. It seem that only two capes have added support of 3.14. I'll make the move to this new kernel version ASAP. Thanks
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This is a bit surprising as bone63 image is one of the latest kernel ... can you do a uname -a to have full kernel version ?
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Hi, if the i2c module is not loaded, there is a good chance that your LOGI-Bone was not recognized. Have you installed the logi-tools as directed on the Wiki ? If so you can check that the board was recognized by executing: sudo cat /sys/devices/b…
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Hi, sorry that my answer was not clear enough, but glad you got it working. Newer version of LOGI-Bone driver is integrated in the kernel and the device tree configuration is loaded automagically if you have the proper descriptor in the on-board ee…
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I gues that you loaded the device tree file by hand, as described in glen's wiki. This is the old way to do it, and Glen's code is a bit outdated. The new loaded uses SPI to be faster and more generic and Glen's code uses the old driver version that…
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Hi, after updating the kernel, can you do a uname -a to check your kernel version ? After rebooting your board can you also do a "sudo /sys/devices/bone_capemgr*/slots" to see if the cape device tree configuration is loaded properly ? Latest Ubunt…
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This is already what we use for our tests of the SDRAM. I have an SDRAM fifo based on this controller almost ready.
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Hi, this is something we would really like to see happen. 40Msps with a parallel interface could be possible on the LOGI-Bone using the two PMODS (16 bit in total). The camera we are using feeds a 24Mhz clock back to the FPGA, so 40Mhz should be po…
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i downloaded the code but i did not have a chance to look more into it. The example code is scattered into multiple times, so it may take time to understand and port to logi.
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Hi, this was corrected in the logibone kernel support since bone59 kernels (but i forgot to update the github with the fix). If you move to a more recent distribution you should not have problems anymore. Since logibone is now integrated into the m…
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I have just finished a first step with the ov7670 where i use it at 320x240 (QVGA) mode and use a laser line. I filter the image through sobel and detect the max vertical gradient in each column in the image to detect the laser line. Then by compari…
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Hi, thanks for your interest. The architecture we use for the sensor is already quite general right now. What we have is a component that provide the interface with the sensor and then another component that takes data from the sensor and format it…
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Now ! Its now available in logi-projects/logi-matrix/logibone let me know if anything goes wrong while building it. Regards, Jonathan Piat
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Hi, i'am sorry but i still haven't built a logibone example for the matrix and new wishbone based-driver, but .... the led matrix driver is available in skeleton so you should be able to capture a top level. There is software examples in logi-proje…
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yes you are right. There are still some project missing the R1 file, but there was no change in pinout since RA3 so there is no problem with using it. Regards, Jonathan Piat
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Great ! The problem is that between the first image we shared and the one available now, there was a major rework on the logibone kernel integration. The loader was moved out of the kernel module and is now a user space application using i2C and SP…
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Hi, do you run the logi_loader command as sudo ? The board seems to be detected fine, so this should be working. Did you install the logi-tools and run install_logibone.sh ? I'll try to run the image you use and come up with suggestions asap. Re…
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Yes indeed ! If you go to www.valentfx.com/skeleton and selct your board you'll see that the component definition now allows to select between multiple libraries (with the cv_filter library that contains sobel and gauss). This allows to compose an a…
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You are totally fright and this is something i have been working on (with no good results) so far. I'll try to explain the complexity of such task. The SDRAM has only one port, meaning that you cannot write (from the camera) and read (from the proce…
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Hi, the LOGI-Bone used pins that are shared with the eMMC. This means that for now you cannot use the LOGI-Bone with a distribution running off the eMMC. We are working on an implementation of LOGI-Bone support software that will allow this but res…
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Just saw that HAT also has a mechanical specification ... There is little chance that we can fit current LOGI-PI components on the 65mmX56.5mm area and add the cutouts for the flex connector.