imaq1394ReadQuadlet

Format

rval = imaq1394ReadQuadlet(SESSION_ID sessionId, unsigned long offset, unsigned long *value);

Purpose

Accesses registers on the camera and reads a 32-bit quadlet from the camera. Data is byte-swapped for little endian alignment after transfer.

Parameters

Parameter	Type	Description
sessionId	SESSION_ID	A valid Session ID, which you can obtain using imaq1394CameraOpen2.
Offset	unsigned long	The offset from the base register to access. Use IMG1394_ATTR_BASE_ADDRESS to obtain the base register for the camera.
Value	unsigned long *	On return, the quadlet value of the specified offset.

Return Value

On success, this function returns IMG1394_ERR_GOOD. On failure, this function returns an error code. You can obtain a more detailed error message with imaq1394ShowError or, if you are using Microsoft Visual Basic, imaq1394ShowErrorCW.