122-28029 Parallax Inc, 122-28029 Datasheet - Page 168

• Manufacturer Part Number: 122-28029
• Description: GUIDE STUDENT SMART SENSORS
• Manufacturer: Parallax Inc

Specifications of 122-28029

• Accessory Type: Manual
• Product: Microcontroller Accessories
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• For Use With/related Products: Smart Sensors
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Contains lead / RoHS non-compliant

Page 156 · Smart Sensors and Applications
This example program is a modified version of TestCompass.bs2 that uses LCD display
commands instead of Debug Terminal commands.
' -----[ Title ]--------------------------------------------------------------
' Smart Sensors and Applications - LcdTestCompass.bs2
' Test to make sure Hitachi HM55B Compass Module is working.
' {$STAMP BS2}
' {$PBASIC 2.5}
' -----[ I/O Definitions ]----------------------------------------------------
DinDout
Clk
En
' -----[ Constants ]----------------------------------------------------------
Reset
Measure
Report
Ready
NegMask
' -----[ Variables ]----------------------------------------------------------
x
y
status
angle
' -----[ Initialization ]-----------------------------------------------------
' LCD Initialization
PAUSE 200
SEROUT 14, 84, [22, 12]
PAUSE 5
SEROUT 14, 84, [255,
√
Open LcdTestCompass.bs2 try running it with the serial cable disconnected.
PIN
PIN
PIN
CON
CON
CON
CON
CON
VAR
VAR
VAR
VAR
%01000,
%10100,
%01000,
%00000,
%00000,
%00000,
%00000,
%00000]
2
0
1
%0000
%1000
%1100
%1100
%1111100000000000
Word
Word
Nib
Word
' Debounce power supply
' Turn on & clear LCD
' 5 ms delay for clear cmd
' Define Custom Character 7
'
' *
'
'
'
'
'
'
*
*
*
' P2 transceives to/from Din/Dout
' P0 sends pulses to HM55B's Clk
' P2 controls HM55B's /EN(ABLE)
' Reset command for HM55B
' Start measurement command
' Get status/axis values command
' 11 -> Done, 00 -> no errors
' For 11-bit negative to 16-bits
' x-axis data
' y-axis data
' Status flags
' Store angle measurement