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D.8.4 Keypad
The functions used to control the keypad are contained in the Dynamic C LIB\KEY-
PADS\KEYPAD7.LIB library.
void keyInit(void);
Initializes keypad process
RETURN VALUE
None.
SEE ALSO
brdInit
void keyConfig(char cRaw, char cPress,
char cRelease, char cCntHold, char cSpdLo,
char cCntLo, char cSpdHi);
Assigns each key with key press and release codes, and hold and repeat ticks for auto repeat and
debouncing.
PARAMETERS
cRaw is a raw key code index.
1 × 7 keypad matrix with raw key code index assignments (in brackets):
[0]
[4]
[1]
[5]
[2]
[6]
[3]
User Keypad Interface
cPress is a key press code
An 8-bit value is returned when a key is pressed.
0 = Unused.
See keypadDef() for default press codes.
cRelease is a key release code.
An 8-bit value is returned when a key is pressed.
0 = Unused.
cCntHold is a hold tick, which is approximately one debounce period or 5 μs.
How long to hold before repeating.
0 = No Repeat.
cSpdLo is a low-speed repeat tick, which is approximately one debounce period or 5 μs.
How many times to repeat.
0 = None.
cCntLo is a low-speed hold tick, which is approximately one debounce period or 5 μs.
How long to hold before going to high-speed repeat.
0 = Slow Only.
138
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