Z-World eDisplay OP7200, Руководство пользователя

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46 eDisplay (OP7200)
Sets the state of a digital output channel (OUT0–OUT7).
This function is intended to control a given channel as a tristate output, for example:
0 = Active low state (GND potential)
1 = Active High state (+K potential)
2 = High-Impedance state.
Since switching from one state to another has some software overhead, the switching delay should be
less than 1 µs.
A run-time error will occur for the following conditions:
1.
channel
or
state
out of range.
2.
brdInit
or digTriStateConfig was not executed before executing
digOutTriState
.
3. Your tried to use a channel that is not configured as a tristate output.
PARAMETERS
channel is the output channel number (0–7).
state is set to one of the following output states.
0 = Active Low.
1 = Active High
2 = High-Impedance state.
SEE ALSO
brdInit, digIn, digOutConfig, digOut, triStateConfig
Reads the state of an input channel (IN0–IN18 for OP7200, IN0–IN15 for OP7210).
A run-time error will occur for the following conditions:
1. channel out of range.
2. brdInit was not executed before executing digIn .
PARAMETER
channel is the input channel number (0–18 or 0–15)
RETURN VALUE
The logic state of the input (0 or 1).
SEE ALSO
brdInit, digOut
void digOutTriState(int channel, int state);
int digIn(int channel);