27220 Parallax Inc, 27220 Datasheet - Page 227
27220
Manufacturer Part Number
27220
Description
BOOK STAMPWORKS
Manufacturer
Parallax Inc
Datasheet
1.27220.pdf
(230 pages)
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
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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
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T9600
The
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