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PicoScope 2104 & 2105 PC Oscilloscope User Guide
14
Copyright 2006 Pico Technology Limited. All rights reserved.PS2100044-1.0
3.3.8
ps2000_open_unit
short ps2000_open_unit ( void )
This function opens a PicoScope 2000 Series PC Oscilloscope. The API driver can
support up to four units.
Arguments None
Returns
-1
if the unit fails to open,
0
if no unit found,
>0
(handle) if the unit opened
3.3.9
ps2000_ready
short ps2000_ready ( short handle )
This function checks to see if the oscilloscope has finished the last data collection
operation. It does nothing if the unit is in streaming mode.
Arguments
handle
, the handle to the required device.
Returns
1
(meaning 'ready') is returned when the unit has collected a complete
block of data or the auto trigger timeout has been reached.
If an invalid handle is passed, or the unit is in streaming mode, it
returns
0
( meaning 'not ready').
-1
(meaning 'device not attached') is returned if the endpoint transfer
fails, indicating that the unit may well have been unplugged.