What is the difference between setup_irq and request_irq in Linux kernel interrupts ?
Timers are setup very early, before the request_irq() infrastructure has been initialised. Hence, setup_irq is used to … Read more
Linux Kernel
Linux Kernel
Configure host ( PC / Laptop ) Bluetooth device on Ubuntu using hciconfig
hciconfig is used to configure Bluetooth devices on host like laptop or PC. hciX is the name … Read more
How to check if Bluetooth device is UP or NOT using l2ping ?
If you want to know the bluetooth device you want to connect to is alive or not, … Read more
Scan, Pair, Connect to Bluetooth device from Ubuntu from command line using bluetoothctl
bluetoothctl is bluetooth control tool which allows us to make the host discoverable, scan other devices, pair … Read more
Cross Compilation and Booting of Linux kernel for Raspberry Pi3 – Manual Compilation
For this post, we assume that you already have a working root filesystem as we did in … Read more
How to resolve error : dtc: command not found
When trying to compile uboot on Ubuntu, we seen the following error, From the error it looks … Read more
Modifying bitbake/yocto initscripts to start wifi during boot
We will need to change the wpa-supplicant.conf file as below, by modifying poky/meta/recipes-connectivity/wpa-supplicant/wpa-supplicant/wpa_supplicant.conf-sane Now, once we modified … Read more
Simple wifi packet sniffer to capture every packet received on wlan0 interface
This program captures the network packets received on wifi interface. If you don’t know which interface to … Read more
C program to interact with frame buffer devices
Screen information are queried by applications using the FBIOGET_FSCREENINFO and FBIOGET_VSCREENINFO ioctls. Those ioctls take a pointer … Read more
Linux test case for framebuffer driver
Screen information are queried by applications using the FBIOGET_FSCREENINFO and FBIOGET_VSCREENINFO ioctls. Those ioctls take a pointer … Read more
