Stepping Through The Code; Setting Code|Lab* Debug Options - Intel IQ80315 Board Manual

B.7.5

Stepping through the Code

The led.c file contains a function that is called from code in blink.c. This exercise steps
through the code and utilizes a few of the most common step tools.
1. Launch the debugger, open "Test80315", and open the blink.c and led.c files.
2. Set a breakpoint on the following line in blink.c:
displayLED(leds[8],leds[0]); /* LED display '80'*/
3. Press Go. The program execution stops on the breakpoint.
4. Press the "Step Over" icon and notice how execution jumps over the function call to the next
line of execution.
5. Now try the "Step Into" icon, and note that the pointer has now jumped into the function
"displayLED", located in the led.c file.
6. Press the "Step Over" icon again, and watch the pointer advance within the function to the next
executable line.
7. Now press the "Step Out of" icon, and notice how execution leaves the called function and
waits on the next executable line in blink.c.
8. The "animate" icon can also be used to provide a "Step Into" effect that occurs at a specified
time interval (default of 1 second). This can be modified in the "Settings" section of the
"View/Options" menu. Experiment with this as desired.
9. Use Halt to stop the animate mode before the next breakpoint.
10. Also note that Go can be pressed at any time to continue execution from the current line to the
next breakpoint or to program end.
B.7.6

Setting Code|Lab* Debug Options

In addition to the "Animate" debug time interval setting briefly mentioned in step 8 of the previous
exercise, many useful options can be accessed from the "View/Options" menu.
1. Experiment here by bringing up the "Registers" window (click and change the view options
between binary and decimal; for example).
Hint: Settings tab, Interface, Radix
2. Also try bringing up the Memory window (click) and change the number of columns
between 4 and 2, and notice the changes.
Hint: Settings tab, Memory Window, Number of Columns
Press window icons a second time to remove them from view.
Again, there are many features of the debug environment not discussed here. Please see the
Code|Lab manuals for a full description of debug features.
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Intel IQ80315 I/O Processor Evaluation Platform Board Manual
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Intel IQ80315 I/O Processor Evaluation Platform
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