27220 Parallax Inc, 27220 Datasheet - Page 227

• Manufacturer Part Number: 27220
• Description: BOOK STAMPWORKS
• Manufacturer: Parallax Inc

Specifications of 27220

• Accessory Type: Booklet
• Product: Microcontroller Accessories
• Lead Free Status / RoHS Status: Not applicable / Not applicable
• For Use With/related Products: StampWorks
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Not applicable / Not applicable

Conditional compilation also simplifies the removal of debugging code – code you
would normally have to delete or “comment out” before finalizing your program.
By changing the value of _DebugMode to zero the DEBUG statements (enclosed in
#IF-#THEN-#ENDIF blocks) are removed and can just as easily be restored.
Break Your Program into Tasks
Since the BASIC Stamp runs an interpreter, interrupts are not possible. How, then,
does one create a program that can be responsive to short-term events?
answer is to take advantage of ON-GOSUB and setup your core program like this:
SevenBit
Inverted
Open
Baud
#DEFINE _DebugMode = 1
Main:
Critical_Task:
Task0:
Task1:
Task2:
#IF (_DebugMode = 1) #THEN
#ENDIF
DO
LOOP
' task code
RETURN
' task 0 code
RETURN
' task 1 code
RETURN
' task 1 code
IF (Emergency) THEN
ENDIF
DEBUG HOME, DEC status
GOSUB Critical_Task
ON task GOSUB Task0, Task1, Task2
task = task + 1 // NumTasks
GOSUB Special_Task
CON
CON
CON
CON
$2000
$4000
$8000
T9600
The