SolidusCode Blog

If you ever run into a problem on Ubuntu where by your system update, software center, or synaptic fail to run properly and you get the following bug report: E: Encountered a section with no Package: header E: Problem with MergeList /var/lib/apt/lists/mx.archive.ubuntu.com_ubuntu_dists_precise-updates_restricted_binary-i386_Packages E: The package lists or status file could not be parsed or opened. You can type the following terminal commands to fix the problem: sudo rm -r /var/lib/apt/lists/* sudo apt-get update The problem was caused by previous attempts to update but your internet network failing to retrieve needed files, which results in Ubuntu getting confused.

Hello everyone. I am always thankful for all of you who follow my blog and my Youtube channel. This post is to announce that from here forward, all my tutorial and source code can be found at: www.soliduscode.com

Okay so I have posted a number of Linux kernel programming videos over at my YouTube channe , however I find that I need a place to post a sample code and the make file to build a module. So here it is. The Makefile obj-m := solidusmodule.o KERNEL_DIR = /lib/modules/3.2.0-25-generic/build PWD := $(shell pwd) all: $(MAKE) -C $(KERNEL_DIR) SUBDIRS=$(PWD) modules clean: rm -rf *.o *.ko *.mod.* *.symvers *.order *~ #include #include #include // file_operations structure- which of course allows use to open/close,read/write to device #include //this is a char driver; makes cdev available #include //used to access semaphores; sychronizatoin behaviors #include //copy_to_user;copy_from_user //(1) Create a structure for our fake device struct fake_device { char data[100]; struct semaphore sem; } virtual_device; //(2) To later register our device we need a cdev object and some other variables struct cdev *mcdev; //m stands 'my' int major_number;

Hello internet, i just recently posted a video  on how to interface an AVR microcontroller with and LCD Screen (HD44780). Please watch the video and do comment.