28029 Parallax Inc, 28029 Datasheet - Page 324

• Manufacturer Part Number: 28029
• Description: KIT PARTS SMART SENSORS W/TEXT
• Manufacturer: Parallax Inc

Specifications of 28029

• Accessory Type: Parts Kit
• Product: Microcontroller Accessories
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• For Use With/related Products: BASIC Stamp® or Javelin Modules
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Contains lead / RoHS non-compliant
• Other names: 28029PAR

Page 312 · Smart Sensors and Applications
To define a custom character, you will send a total of 9 bytes to the Serial LCD. The first
byte needs to be a valid define-custom-character command (Dec 248 to 255) and must be
followed by eight data bytes that define the pixels of the character. The Serial LCD will
always use the next eight bytes it receives to set the pixels of the character. The data
bytes define the character starting at the topmost row of pixels, as shown in the example
code.
Define a custom character using the code example below. First, set the baud rate on your
Serial LCD to 19,200. Then, load the code below into your BASIC Stamp 2 and run it.
You will see a diamond character appear on the screen.
' {$STAMP BS2}
TxPin
Baud19200
Command Set
The tables below list all of the valid Serial LCD commands. Commands marked as N/A
are invalid and are ignored. The lines of the LCD display are numbered starting from 0,
with Line 0 being the top line. The character positions on each line are numbered starting
from 0, with position 0 being the leftmost position on the line.
HIGH TxPin
PAUSE 100
SEROUT TxPin, Baud19200, [250]
SEROUT TxPin, Baud19200, [0]
SEROUT TxPin, Baud19200, [4]
SEROUT TxPin, Baud19200, [14]
SEROUT TxPin, Baud19200, [31]
SEROUT TxPin, Baud19200, [14]
SEROUT TxPin, Baud19200, [4]
SEROUT TxPin, Baud19200, [0]
SEROUT TxPin, Baud19200, [0]
SEROUT TxPin, Baud19200, [2]
CON
CON
0
32
' Set pin high to be a serial port
' Pause for Serial LCD to initialize
' Define Custom Character 2
' Now send the eight data bytes
' 0
' 4
' 14 = %01110
' 31 = %11111
' 14 = %01110
' 4
' 0
' 0
' Display the new Custom Character 2
= %00000
= %00100
= %00100
= %00000
= %00000
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