28123 Parallax Inc, 28123 Datasheet - Page 294

• Manufacturer Part Number: 28123
• Description: TEXT WHAT'S A MICROCONTROLLER
• Manufacturer: Parallax Inc
• Type: Programmingr

Specifications of 28123

• Style: Book
• Title: What's a Microcontroller?
• Contents: Whats a Microcontroller? Text
• Product: Microcontroller Accessories
• Core Processor: PIC16C57c
• Flash: 128 Bytes
• Operating Supply Voltage: 9 V
• Board Size: 31 mm x 16 mm
• Lead Free Status / RoHS Status: Not applicable / Not applicable

Figure 10-5
Adding the Photoresistor Circuit
ACTIVITY #3: SUBSYSTEM INTEGRATION EXAMPLE
Now that all the elements in the sensor array are built and tested, you can now write a
program that makes use of all four sensor circuits. This example will demonstrate how to
program the BASIC Stamp to display a terminal with a menu that a technician might use
to monitor the sensors.
Programming a Menu System and Using the Input/Output PIN Directive
The
In the next example program, the
named
program executes a
program executes a
You can use the
PBASIC program. The BASIC Stamp Editor will then figure out whether you are using
the I/O pin as an input or an output (or both). The
P9
ON…GOSUB
request
ON offset , GOSUB Target1, {Target2, Target3,…}
ON request GOSUB Read_Pushbutton_1, Read_Pushbutton_2,
PinName PIN PinNumber
220
Ω
command can be very useful for menus.
to direct it to one of four subroutines. If the value of
PIN
GOSUB Read_Pushbutton_2
GOSUB Read_Pushbutton_1
directive to give a name to each I/O pin you are going to use in a
Vss
Read_Pot, Read_Photoresistor
ON...GOSUB
0.1 µF
, and so on.
command uses the value of a variable
PIN
. If the Value of
directive’s syntax is:
P15
P14
P13
P12
P11
P10
P9
P8
P7
P6
P5
P4
P3
P2
P1
P0
X2
X3
Vdd
Vin
request
request
Vss
is 1, the
is 0, the