Z-World RabbitCore 2000, Начало работы

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Getting Started 23
To remove the break point, type
F2
or select
Toggle Breakpoint
on the
Run
menu. To
continue program execution, type
F9
or select
Run
from the
Run
menu. Now the LED
should be flashing again since the program is running at full speed.
You can set break points while the program is running by positioning the cursor to a state-
ment and using the
F2
key. If the execution thread hits the break point, a break point will
take place. You can toggle the break point off with the F2 key and continue execution with
the
F9
key. Try this a few times to get the feel of things.
4.2.3 Editing the Program
Click on the Edit box on the task bar. This will set Dynamic C into the edit mode so that
you can change the program. Use the
Save as
choice on the
File
menu to save the file
with a new name so as not to change the demo program. Save the file as
MYTEST.C
. Now
change the number 25000 in the
for (..
statement to 10000. Then use the
F9
key to
recompile and run the program. The LED will start flashing, but it will flash much faster
than before because you have changed the loop counter terminal value from 25000 to
10000.
4.2.4 Watching Variables Dynamically
Go back to edit mode (select edit) and load the program
FLASHLED2.C
using the
File
menu
Open
command. This program is the same as the first program, except that a vari-
able
k
has been added along with a statement to increment
k
each time around the endless
loop. The statement:
runwatch();
has been added. This is a debugging statement that makes it possible to view variables
while the program is running.
Use the
F9
key to compile and run
FLASHLED2.C
. Now type
<ctrl-W>
to open the watch
window and add the watch expression
k
to the top of the list of watch expressions. Now
type
<ctrl-U>
. Each time you type
<ctrl-U>
, you will see the current value of
k
, which is
incrementing about 5 times a second.
As an experiment, add another expression to the watch window:
k*5
Then type <ctrl-U> several times to observe the watch expressions
k
and
k*5
.
4.2.5 Summary of Features
So far you have practiced using the following features of Dynamic C.
•
Loading, compiling and running a program. When you load a program it appears in an
edit window. You can compile by selecting
Compile on the task bar or from the Com-
pile menu. When you compile the program, it is compiled into machine language and
downloaded to the target over the serial port. The execution proceeds to the first state-
ment of main where it pauses, waiting for you to command the program to run, which
you can do with the
F9 key or by selecting Run on the Run menu. If want to compile