Книга: Advanced PIC Microcontroller Projects in C
6.1.4 DO-ENDDO
6.1.4 DO-ENDDO
Use Do and ENDDO keywords to show iteration in the PDL code.
Example:
To create an unconditional loop in a program we can write:
Turn on LED
DO 10 times
Set clock to 1
Wait for 10ms
Set clock to 0
ENDDO
A variation of the DO-ENDDO construct is to use other keywords like DO-FOREVER, DO-UNTIL, etc. as shown in the following examples.
Example:
To create a conditional loop in a program we can write:
Turn off buzzer
IF switch = 1 THEN
DO UNTIL Port 1 = 1
Turn on LED
Wait for 10ms
Read Port 1
ENDDO
ENDIF
The following construct can be used when an endless loop is required:
DO FOREVER
Read data from Port 1
Send data to PORT 2
Wait for 1 second
ENDDO
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