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Pixie_Acquire_Data
Syntax
S32 Pixie_Acquire_Data
U16 Run_Type,
//
U32 *User_data,
//
//
U8 *file_name,
//
//
U8 ModNum);
//
(
Data acquisition run type
An unsigned 32-bit integer array containing the
data to be transferred
Name of the file used to store list mode or MCA
histogram data
The number of the Pixie module
Description
Use this function to acquire ADC traces, MCA histogram, or list mode data. The string variable
file_name should always be specified – for start/stop poll of acquisition runs it is the filename for
the data, in other cases it is the filename to be processed. In rare cases, file_name can be
specified as an empty string. The unsigned 32-bit integer array User_data is only used for
acquiring ADC traces (control task 0x84), reading out list mode data or MCA spectra. In all
other cases, User_data can be any unsigned integer array with arbitrary size. Make sure that
User_data has the correct size and data type before reading out ADC traces, list mode data, or
MCA spectrum.
Parameter description
Run_Type is a 16-bit word whose lower 12-bit specifies the type of either data run or control task
run and upper 4-bit specifies actions (start\stop\poll) as described below. Controltasks are
described in detail in section 4.5.
Lower 12-bit:
0x100,0x101,0x102,0x103
0x400,0x201,0x202,0x203
0x301
0x1 -> 0x7F
0x80 -> 0xFF
Upper 4-bit:
0x0000
0x0000
0x0001
0x0002
0x0005
0x0006
0x0016
1
list mode runs (Pixie-4 and Pixie-500)
list mode runs (Pixie-500 Express)
MCA run
control task runs handled by DSP
control task runs handled by C library
start a control task run
set offset DACs1
connect inputs (Pixie-4 only)
disconnect inputs (Pixie-4 only)
program Fippi FPGA1
measure baselines
test writing to external list mode memory
Should be called after most parameter changes applied directly to the DSP (using Pixie_Buffer_IO). Automatically
called after parameter changes handled by the C library (using Pixie_User_Par_IO).
Pixie-4 Programmer’s Manual V3.11
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