I trying to run the pppd daemon on my embedded board. When I connect the modem to USB and run “pon provider” the initialization is correct (I get the IP address and in “ifconfig” I have ppp0 interface) “provider” file: “mobile-modem.chat” file: However, I would …
Tag: embedded
Error 310170 occured Property Node(arg 1) in Simulation Trace Environment
We tried to work out our code in LabView 2018 and tried to run it in Cybersim but this error is popping up. Any recommendation to improve the same will be appreciated. Thanks in advance. Answer 310170 means “The Ethercat is busy” https://zone.ni.com/reference/en-XX/help/372983F-01/lvrobogsm/robo_e…
How to deploy files to /boot partition with Yocto
I’m trying to deploy some binary files to /boot in a Yocto image for RPi CM3 but it deploys them to the wrong location. The files are deployed to /boot in the / partition of the final image, but not to the /boot partition. So they are not available at boot time. I already googled and studied the kernel …
which utility produces “Poky (Yocto Project Reference Distro) 2.6.1 (none) /dev/console”
I am playing with Yocto Thud 2.6.1. I want to know which utility / program / library is responsible for producing following line: ‘Poky (Yocto Project Reference Distro) 2.6.1 (none) /dev/console’ Thanks Answer The lines before the login are from the /etc/issue and /etc/issue.net files. You can mod…
Segmentation fault when maping /dev/mem
I’m trying to mmap a memory from my FPGA on a linux running on my Zedboard SoC. I can read the contents correctly using devmem on the command line, but when trying to read it through C I get a segmentation fault. The barebones code shown below throws the segmentation fault when trying to print the conte…
What does the “D:, H:, V:” means in fbset?
I search many data on web but I can’t find what does the “D: 148.500 MHz, H: 67.500 kHz, V: 60.000 Hz” means in the below example? mode “1920×1080-60” # D: 148.500 MHz, H: 67.500 kHz, V: 60.000 Hz geometry 1920 1080 1920 3240 32 timings 6734 148 88 36 4 44 5 accel false rgba…
Buildroot: install and build the toolchain only
I want to install and build just the toolchain for my Buildroot project. make help suggests that the command make <options> toolchain should work; however, running that command simply returns Nothing to be done for ‘toolchain’. and output/host is never created. Answer You first have to confi…
How do I set up a embedded MySQL client in Qt
I’m trying to set up my embedded Linux machine as a MySQL client, in order to connect to a external MySQL server (running on a remote machine). sqlite is not an option. I understand, thanks to Basile Starynkevitch that I have to use libmysqlclient (because that is the only library to run such a connecti…
mmap does not work as expected (return random 0xdeadbeef)
I am writing c++ on linux7arm and the physical address is referring to a memory block (that can be accessed/changed by other peripherals) when I map a page of physical address space to the local address space and try to read it, it works fine and show the expected data BUT not all the time. if I write a scrip…
make implies new Extracting
I created a Buidroot package with the both following files : .mk Config.in I succedded in compiling the package by using the above .mk file. However, because I wanted to modify the source code into output/build I note the following behavior (After removing only .stamp_built) : I obtain a new Extracting, Patch…