SolutionsToTheExercises < Embedded

---+ Solutions to the exercises

This is the page to which the solutions will be uploaded. These will mainly consist of gzipped tar files which you can download and unpack.

For the exercise on Linux the are no solutions as these are simple Linux commands to be executed into the bash command interpreter.<br /><br />
   * <b>Solutions to exercise 1: Linux Commands</b><br />There are no solutions to this exercise. We simply try out a series of bash commands
   * *Solutions to exercise 2*: __C programming:__
%ATTACHURL%/solEx2.tar.gz<br /><br />
   * <b>Solutions to exercise 3: Programming Tools</b><br />Even though there are no solutions to exercise3: _Compilations Tools_, here are a few Makefile examples nevertheless:
%ATTACHURL%/makeExamples.tar.gz<br /><br />
   * <b>Solutions to exercise 4: Raspberry Pi<br /></b>There are no solutions to this exercise session because we only use programs that have already been written before.<br /><br />
   * <b>Solutions to exercise 4: LED<br /></b><br />For the mygpio program, these are the tests you must perform in order to make the program safe against wrong input from the user
      * test if the user has given at least 2 arguments namely a string, which should be "read" or "write" and the pin number<br />(argv may not be smaller than 3)
      * check if argv[1] is either "read" or "write". Use strcmp to accomplish this
      * if argv[1] is "read", make sure argc is exactly 3
      * if argv[1] is "write", make sure argc is exactly 4
      * convert the pin number from string to integer. You may be tempted to use atoi() but you must not, because atoi() does not check for conversion errors. Use strtol() instead.
      * Make sure the converted pin number is in the range 0..7<br />For the "read" case we are done with our checks here
      * for the "write" case convert the logic level and make sure you get either 0 or 1

-- %USERSIG{UliRaich - 2017-10-14}%

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Attachments

Topic attachments
I	Attachment	History	Action	Size	Date	Who	Comment
gz	makeExamples.tar.gz	r1	manage	1.7 K	2017-10-14 - 12:59	UnknownUser
gz	solEx2.tar.gz	r1	manage	798.9 K	2017-10-14 - 12:53	UnknownUser

This topic: Embedded_Systems > WebHome > SolutionsToTheExercises
Topic revision: r2 - 2017-10-23 - uli