User manual

USB DrDAQ Programmer's Guide 23

3.5.14

UsbDrDaqOpenUnitProgress

PICO_STATUS UsbDrDaqOpenUnitProgress(

short * handle,

short * progress,

short * complete

)

This function checks on the progress of UsbDrDaqOpenUnitAsync .

Arguments:

handle: a pointer to where the function should store the handle of

the opened data logger, if the operation was successful. Use this as

the handle parameter when calling any other USB DrDAQ API

function.

0: if no unit is found or the unit fails to open

<>0: handle of unit (valid only if function returns PICO_OK)

progress: a location where the function writes an estimate of the

progress towards opening the data logger. The value is between 0 to

100.

complete: a location where the function will write a non-zero value

if the operation has completed

Returns:

PICO_OK

PICO_NULL_PARAMETER

PICO_OPERATION_FAILED