III - Advanced Project.¶

• Table of contents
• III - Advanced Project.
  • 1. Adapting project to elementary task.
    • 1.1 Integration of C Source files into task(s).
    • 1.2 Definition of your task(s) to be called.
  • 2. Integration of a Reed-Solomon encoder/decoder.
    • 2.1 Presentation of Reed-Solomon.
    • 2.2 Task Example.
  • 3. Displaying results.
    • 3.1 In simulation.
    • 3.2 On board.
  • 4. Measurement of encoding/decoding time.

1. Adapting project to elementary task.¶

See Tutorial page for project bases.
In this part, you will have to modify particular files of the previous Test/.

1.1 Integration of C Source files into task(s).¶

• task_name.c stating void task_name (void) { ... }.
  Here you can either call the C main function in the task_name function or adapting your main file into one or several tasks (for simultaneity during process).

• task_name.h stating extern void task_name (void); and other intern functions.

1.2 Definition of your task(s) to be called.¶

• tasks.h defining OSTCBP of all predifined tasks i.e. the way of specifying a pointer to a particular Salvo Task Control Block. More information is available on Salvo User Manual.

• task_cmd.c which is a tool provided by Test/ that allows to resume/stop your task(s).
  

• main.c i.e. the basic implementation to call your task(s). All statements are essential for Salvo and CSK to work.
  

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2. Integration of a Reed-Solomon encoder/decoder.¶

A highly convenient implementation of a Reed-Solomon code is available on RS Code Website and will be integrated in the following.

2.1 Presentation of Reed-Solomon.¶

More information is available on rs.doc and config.doc.

2.2 Task Example.¶

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3. Displaying results.¶

3.1 In simulation.¶

Message of 87 characters

Code of adding errors

Checking Output UART Window

Displayed result

3.2 On board.¶

-	Char	Code ASCII	Hexadecimal	Binary
Codeword	2	50	0x32	0b00110010
Erroneous Codeword	3	51	0x33	0b00110011

__________ a. Codeword : 0bXX110010 ________________ b. Erroneous codeword : 0bXX110011 ____________ c. Corrected codeword : 0bXX110010 ______

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4. Measurement of encoding/decoding time.¶

1000 ticks per milliseconds

Time measurement of data encoding

Printing clock data

Chart of Reed Solomon time measurement