The Intelligent Keyboard Controller
$16 Interrogate Joystick
T his fu n c tion can b e u se d to re ad th e cu rre n t sta tu s of th e jo ystick s w h en
in e v e n t re p ortin g m o d e o r in te rro g atio n m o d e . It is th e o n ly w a y to rea d
th e jo y stick s w h en in in te rro g atio n m o d e .
Input parameters
N o n e
Packet returned
Byte
Number Description
1 $F D (Jo ystick re p o rt p ack et h ea d er)
2 Jo ystic k 0 stick a n d b u tto n statu s b yte (B xxxR L D U )
B it 0 = 1 Jo y stick p res sed in u p direction
Bit 1 = 1 Joy stick p res se d in d o w n d ire ctio n
B it 2 = 1 Jo y s tick p re sse d in left d ire ction
B it 3 = 1 Jo ystick p re sse d in rig h t d irection
B it 7 = 1 F ire b u tto n p re s sed
3 Jo ystick 1 stick a n d b u tto n sta tu s b y te (B xxxR L D U )
B it 0 = 1 Jo y stick p re sse d in u p d ire ctio n
B it 1 = 1 Jo ys tick p re sse d in d o w n d irectio n
B it 2 = 1 Jo ystick p re sse d in le ft direction
B it 3 = 1 Joy stick p res sed in rig h t d ire ction
Bit 7 = 1 F ire b u tto n p resse d
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