Definition:

#include <aDigital.h>
object code: aDigital.c



aErr aDigital_SetConfig(

aStemLib stemRef, const unsigned char module, const unsigned char nDigitalIndex, int nConfigValue);

Parameters:

stemRef	-	An opaque library reference representing the aStem library which manages the communication with the BrainStem modules.
module	-	The IIC address of the module that will receive new configuration data for one of its digital IO pins.  This need not be the router.
nDigitalIndex	-	The index of the digital IO pin.
nConfigValue	-	Integer with the new configuration value.

Return Value:

This routine returns aErrNone when there are no errors.

Description:

This routine manages the BrainStem packets needed to set the configuration byte of a digital IO pin.  The following defined bit masks may be used to configure digital IO pins.

aDIGITAL_INPUT	1	Set to make pin an input.   Clear to make pin an output.
aDIGITAL_POLLENA	2	Set to enable transition polling for the pin.   Clear to disable transition polling for the pin.
aDIGITAL_POLLHI	4	Set to trigger reflex on low-to-high transition when polling enabled.   Clear to trigger reflex on high-to-low transition when polling enabled.
aDIGITAL_TMRHI	8	Set to measure high pulses or elapsed time till pin goes high.   Clear to measure low pulses or elapsed time till pin goes low.
aDIGITAL_TMRWID	16	Set to make pin a pulse width timer.   Clear to make pin an edge (elapsed time) timer.

The defined value aDIGITAL_OUTPUT may be used by itself to configure a pin as an output.  The timer flags are only relevant for inputs 1-4 on the BrainStem GP 1.0 Module.

Related:

aStem_GetLibRef, aStem_ReleaseLibRef, aDigital_GetConfig