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Input and Output S16A User’s Guide
18 EDT, Inc. October, 1996
s16a_set_dio_data_reg
Description
Write a specified value to the DIO Data register. Only the low 12 bits are significant; of these, bits that are
configured as inputs are ignored when written.
Syntax
int s16a_set_dio_data_reg(S16aDev *s16a_p, int value);
Arguments
s16a_p S16A device handle returned from s16a_open
value Value to write to the DIO Data register.
Return
Returns 0 on success or –1 on failure. Fails if s16a_p does not refer to an output channel. Sets errno on failure.
s16a_set_dio_direction_reg
Description
Write a specified value to the DIO Direction register. The low 12 bits configure the corresponding DIO pins.
If a bit is set, the DIO pin of the same number is configured as an output signal.
Syntax
int s16a_set_dio_direction_reg(S16aDev *s16a_p, int value);
Arguments
s16a_p S16A device handle returned from s16a_open
value Value to write to the DIO Direction register.
Return
Returns 0 on success or –1 on failure. Fails if s16a_p does not refer to an output channel. Sets errno on failure.