ProSoft Technology MVI69-ADM - Manual (Page 223)

MVI-ADM ♦ 'C' Programmable Backplane API Functions
'C' Programmable Application Development Module Developer's Guide
ProSoft Technology, Inc. Page 223 of 342
February 20, 2013
MVIbp_SetUserLED
Syntax
int MVIbp_SetUserLED(MVIHANDLE handle, int lednum, int ledstate);
Parameters
handle Handle returned by previous call to MVIbp_Open
lednum Specifies which of the user LED indicators is being addressed
Description
MVIbp_SetUserLED allows an application to turn the user LED indicators on and
off.
handle must be a valid handle returned from MVIbp_Open.
lednum must be set to MVI_LED_USER1 or MVI_LED_USER2 to select User
LED 1 or User LED 2, respectively.
ledstate must be set to MVI_LED_STATE_ON or MVI_LED_STATE_OFF to turn
the indicator On or Off, respectively.
Return Value
MVI_SUCCESS The input scan has occurred.
MVI_ERR_NOACCESS handle does not have access
MVI_ERR_BADPARAM lednum or ledstate is invalid.
Example
MVIHANDLE Handle;
/* Turn User LED 1 on and User LED 2 off */
MVIbp_SetUserLED(Handle, MVI_LED_USER1, MVI_LED_STATE_ON);
MVIbp_SetUserLED(Handle, MVI_LED_USER2, MVI_LED_STATE_OFF);