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Installing ns-3.37 and ns-3.35 in Ubuntu | Ubuntu 22.04 | NS3

Multiple Versions of ns3 in Ubuntu 22.04 In this post, we are going to install two versions of ns3 namely ns-3.35 and ns-3.37  My OS is : Ubuntu 22.04 LTS (Long Term Support) ns-3.35 uses waf and (./waf --run scratch/first)  ns-3.37 uses cmake  (./ns3 run scratch/first.cc) So we will install both the packages  Go through the video for complete instructions To start with  $ sudo apt update  $ sudo apt install build-essential autoconf automake libxmu-dev g++ python3 python3-dev pkg-config sqlite3 cmake python3-setuptools git qtbase5-dev qtchooser qt5-qmake qtbase5-dev-tools gir1.2-goocanvas-2.0 python3-gi python3-gi-cairo python3-pygraphviz gir1.2-gtk-3.0 ipython3 openmpi-bin openmpi-common openmpi-doc libopenmpi-dev autoconf cvs bzr unrar gsl-bin libgsl-dev libgslcblas0 wireshark tcpdump sqlite sqlite3 libsqlite3-dev  libxml2 libxml2-dev libc6-dev libc6-dev-i386 libclang-dev llvm-dev automake python3-pip libxml2 libxml2-dev libboost-all-dev  I have downloaded both the versions of ns3 fr

Device Driving ISRs in a System

Writing Device Driving ISRs in a System

  1. A device has three sets of device registers
    1. Data Register
    2. Control Register
    3. Status register
  2. A device initializes by setting the control register bit and the device closes b y resetting the control register bits.
  3. There may be more than one device register at a device address.
  4. Control register bits controls all the action of the device.
  5. Status register bits reflects flags for the status of the device at an instant and changes after performing the actions as per device driver
  6. ISRs can be called either by setting the status flag or a hardware call by a signal to initiate.
  7. The status and control registers should be available at the same address, since the processor reads the status from the address during read operation and writes at the same address during the write operation.

    Parallel Port Device driver in a System

Step A – Device Initialisation Program

Step B – Device Driver Program

Step 0, 1, 2, 3, 4, 5 – Interrupt Service Routine for PORTA.


Serial Device driver in a System

It uses UART 8250 with Intel 80x86 Processor

Steps for Serial Port Device Driver Program

  1. Device initialization codes for UART 8250. Define input and output port Addresses (0x2F8 for serial port address in x86 processors)
  2. Set control bits for interrupt mask and allocate interrupt vector address for device interrupts. (Interrupt vector is a memory address where the driver ISR is located).
  3. Enable all Interrupts in the system.
  4. Enable serial line interrupt.
  5. Set Baud Rate.
  6. Initialize normal serial data output.
  7. Enable interrupt controller as initialization of device is finished in the above steps

Transfer character to serial line device by writing it to port at 0x2F8.

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