2019-2020-1 20,175,302 201,752,314 20,175,316 Experiment 4 Peripheral Driver Design

2019-2020-1 20,175,302 201,752,314 20,175,316 Experiment 4 Peripheral Driver Design

Purpose

• The easiest character to write drivers
• Simple read and write functions, and lists common format Makefileand script-driven loading and unloading

• Familiar with the whole process to write a character device driver

  Experimental content and procedures

  A task

• Learning Resources in Chapter XI of the whole class of "hqyj. Embedded Linux application development standard tutorial .pdf" in

• Submit photos Cornell notes (can be more than one)

  notes

• 20175302

• 20175314
  

-20175316

Task II

Mission requirements

• In Ubuntu Resources completed a full course of "hqyj. Embedded Linux application development standard tutorial .pdf" Chapter XI test test

• Submit to compile, load modules, unloading modules, test run of shots (to multiple, full-screen, reflecting the student number information)

  Experimental Procedure

• VMware virtual machines created in the folder

• Chapter XI of the experiment will test the character code on the device: test_drv.c, test.c, Makefile, test_drv_load, test_drv_unloadtyping and save the file in the folder

  Note that the command line feed to use the Tab key to indent in the Makefile

The results and screenshot

• Compile and load the module
  compilation: make clean;make
  to increase the script file executable permissions: chmod +x ./test_drv_load
  Run as administrator to load the script:sudo ./test_drv_load

- Compile and run the test program
compiled: gcc -o test test.c
added to the file executable permissions: chmod +x ./test
Run as administrator: sudo ./test
If prompted, enter information