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Spin Example Program for Propeller Board of Education
Download and unzip the Gimbal Joystick Example Spin Code (search 27807 at www.parallax.com). Open
the program PropBOE_joystick_demo.spin with the Propeller Tool (a free download from
www.parallax.com/propellertool):
CON
_clkmode
= xtal1 + pll16x
_xinfreq
= 5_000_000
OBJ
pst
: "Parallax Serial Terminal"
adc
: "PropBOE ADC"
joy
: "joystick"
PUB start | rawh, rawv
pst.start(9600)
joy.setup(0, 400, 500, 600, 50, -500, 500)
joy.setup(1, 400, 500, 600, 0, 0, 1000)
repeat
rawh := adc.in(0)
rawv := adc.in(1)
pst.str(string(1, "
pst.dec(rawh)
pst.str(string("
pst.dec(joy.value(0, rawh))
pst.str(string(11, 13, "Vert:", 14, 7))
pst.dec(rawv)
pst.str(string("
pst.dec(joy.value(1, rawv))
pst.char(11)
Load the program using the F10 key, and open the Parallax Serial Terminal via the F12 key. You should
see a display that looks like this:
As you move the joystick around, the values in the display will change to show its position. The Raw
values are the numbers read from the ADC. The joystick.spin object scales the raw ADC values to
produce the Joystick values. In this example, the horizontal values range from –500 to +500 and
Copyright © Parallax Inc.
Raw Joystick", 11, 13, "Horiz:", 14, 7))
", 14, 15))
", 14, 15))
Gimbal Joystick with Adapter (#27808)
v1.2 11/13/2019 Page 5 of 9
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