**** BEGIN LOGGING AT Tue Sep 14 08:35:48 2021 **** BEGIN LOGGING AT Tue Sep 14 09:20:09 2021 **** BEGIN LOGGING AT Tue Sep 14 09:20:56 2021 Sep 14 11:19:59 Hi all, does any one know if I need the BB AI to use opencv to get alerts on figure detection? Sep 14 11:20:22 I mean that I want to connect a camera and get alerts on human figure detection Sep 14 11:20:39 I think I saw the BB can only do 1 frame per sec Sep 14 12:09:42 Howdy Sep 14 12:10:04 I am looking for some support to my BBB. Am I on a right place here? Sep 14 12:11:59 On a first look it seems I am on a right place. So I'll start. Sep 14 12:13:25 BBB all happy for 6mnts+. Also me being very happy. No problems at all. Steep learning curve. Couple days back my terminal started complaining about attempting an operation on a read-only FS only. Sep 14 12:15:32 Restarted BBB and while LEDs indicated booting up and then heart-beat, I couldn't get back tty over wifi, then even USB. All resolved itself by a faulty SD card. Sep 14 12:17:03 Now, my question. In an attempt to resolve this I attempted to connect to the serial port as described here: https://elinux.org/EBC_Exercise_21a_Boot_Sequence Sep 14 12:18:04 Having checked everything twice - I couldn't see anything on that tty at all. I brought same cable to a friend and the same there (nothing). Sep 14 12:19:14 There is a chance that instructions on that EBC_Exercise page are wrong, or my (brand new) FTDI cable is wrong. Sep 14 12:19:26 ... or I am missing something completely. Sep 14 12:21:08 Would you be able to advise if there is a way to connect to BBB over serial cable and what would be a correct way please? Goal is to be able to monitor BBB closely and also being able to debug some of these problems in a future on my own. Sep 14 13:19:00 did you connect to the correct port on your computer? Sep 14 13:19:31 like, that wiki page seems to blindly assume the ftdi serial cable you plugged into your computer is /dev/ttyUSB0 but that doesn't need to be true at all Sep 14 13:20:50 and of course make sure the cable is plugged in correctly Sep 14 13:22:27 other than that I have no idea, the serial console should basically always produce output at boot, even if it fails to boot Sep 14 13:23:32 blech: btw you said BBB but you also mentioned wifi, which the BBB doesn't have... do you mean the BBBW ? (it doesn't matter either way for the serial console but it's generally a good idea to be precise about which device you have) Sep 14 13:25:38 also make sure it's a 3.3v ftdi cable, a 5v ftdi cable might not work reliable (the serial console port is 5V tolerant (unlike everything else on the BBB) but only outputs 3.3V serial data which might not suffice for a 5V ftdi cable) Sep 14 13:58:00 hi zmatt Sep 14 14:01:19 Guest72: sorry I have no experience with opencv Sep 14 14:01:29 ok, thnaks Sep 14 19:01:00 hi, is anyone in this time zones, uses the AI version and can tell me if it has any opencv acceleration? Sep 14 22:38:10 Hi zmatt, I've checked that cable and it really is 5V! Let me have another go with 3.3V. Thanks!! Sep 15 00:00:08 Guest72: I use the BBAI and openCV. Sep 15 00:00:57 Some stuff from OpenCV work, python3-opencv and libopencv-dev. But...I think you may have to cross-compile the examples. Sep 15 00:01:23 I get stuck w/ the samples lib. from OpenCV. Sep 15 00:02:18 Most of their ideas work so far on the BBAI but I have not got to handling the LCD screen for the BBAI yet. Sep 15 00:12:00 Now...about acceleration, I am not sure. I am sure if you can unload it on one of the EVE cores or the IPU, yes. Then, acceleration is possible. Sep 15 00:12:10 But...I am out-of-date on that front. Sep 15 00:17:56 Guest72: Here is a way to get examples on the board... https://docs.opencv.org/master/d0/d76/tutorial_arm_crosscompile_with_cmake.html Sep 15 00:19:18 Also...if you figure out how to handle the GPU onboard the AI, it may help. Sep 15 00:19:29 See here: https://opencv.org/opencl/ Sep 15 00:21:33 2D-graphics accelerator (BB2D) subsystem && Dual-core PowerVR® SGX544™ 3D GPU Sep 15 00:21:57 So...yes. I think it is possible. Sep 15 00:24:49 https://learnopencv.com/opencv-transparent-api/ has some examples and info. that may not be available elsewhere. Sep 15 00:53:46 For instance...the OpenCL SDK is required for the AI. I am not sure any advancements have been made w/ the SGX544 yet but imagtech. has a dev. account to sign up for currently to get the SDK and they have a good wiki too. Sep 15 01:07:36 ...for the Native_SDK from Imag. Tech. for the SGX, there are plenty of libs. needed to build the SDK too. So, be prepared! Sep 15 01:40:52 Oh. Sep 15 01:41:52 For the Native_SDK and complete build process, one would need an updated version of cmake (3.16 at least). On kernel 5.4.x, only 3.13 resides. Time to upgrade. Sep 15 02:38:14 do not cat every dir. in /usr/bin/c*. Ha. **** ENDING LOGGING AT Wed Sep 15 02:59:56 2021