cccusb::CCCUSB_enumerate
cccusb::usb_device_vector_get CCCUSB-enumeration index
cccusb::usb_device_vector_size CCUSB-enumeration
::cccusb::CCCUSB name usb-device
::cccusb::CCCUSB -args usb-device
::cccusb::CCCUSB ?name? -this ptrName
object c
object executeList readout-list maxread
object inhibit
object loadList listNum readout-list
object readDGGA
object readDGGB
object readDGGExt
object readDelays
object readDeviceSourceSelectors
object readFirmware
objectreadGlobalMode
object readLamTriggers
object readLedSelector
object readOutputSelector
object readScalerA
object readScalerB
object readScalerControl
object readUSBBulkTransferSetup
cccusb::CCCUSB_serialNo usb-device
object setDefaultTimeout ms
object simpleControl n a f
object simpleRead16 n a f
object simpleRead24 n a f
object simpleWrite16 n a f d
object simpleWrite24 n a f d
object uninhibit
object writeActionRegister value
object writeDGGA value
object writeDGGB value
object writeDGGExt value
object writeDelays value
object writeDeviceSourceSelectors value
object writeGlobalMode value
object writeLamTriggers value
object writeLedSelector value
object writeOutputSelector value
object writeScalerControl value
object writeUSBBulkTransferSetup value
object Z
object -delete
cccusb::string_to_char string-object
::cccusb::uint16_vector_get vector-object index
::cccusb::uint16_vector_size vector-object
This set of commands is a Tcl wrapper around the CCCUSB C++ class (see CCCUSB(3ccusb). The interface consists of several static methods and object sub commands.
The static methods include methods that support device enumeration and construction. Enumeration returns data types that require additional static methods to unpack. See DEVICE ENUMERATION below.
Command lists (see cccusbreadoutlist(3ccusb)) can be executed in immediate mode or loaded. At present the usb bulk read function is not supported so a pure Tcl data taking system cannot yet be written. If you want support for that, request it as that can be added easily enough.
Immediate list execution also produces data types that require additional static member functions to unpack. See LIST EXECUTION below for more information.
Produces an enumeration of the powered up CC-USB devices attached to the host. The result of this command is a wrapped std::vector<usb_device*> See DEVICE ENUMERATION for recipes for using this result.
Gets a specific element of the return value from
cccusb::CCCUSB_enumerate.
CCCUSB-enumeration is the
value returned from that command.
index
is the index into the vector.
Indices start from 0. See DEVICE ENUMERATION
below for some enumeration recipes.
Returns the size of the enumeration vector
CCCUSB-enumeration.
This parameter is a value returned from
cccusb::CCCUSB_enumerate
See DEVICE ENUMERATION below for some device enumeration recipes.
Constructs a CCCUSB object whose command will be
name.
usb-device is an element
from a device enumeration that was gotten
from cccusb::CCCUSB_enumerate.
For recipes involving device enumeration and construction see DEVICE ENUMERATION below.
Constructs a CCCUSB object with a unique
object instance command name chosen
by the constructor. usb-device
is an element of an enumeration returned from
cccusb::CCCUSB_enumerate.
Normally this is used in constructs like e.g:
For more enumeration and construction recipes see DEVICE ENUMERATION below.
Constructs CCCUSB object from an object pointer
ptrName.
Object pointers are gotten either by requesting
the -this from another object or,
in the CCUSBReadout framework by being passed in
from the framework to a Tcl driver.
If the optional name
is provided it will be the object instance command.
If not the object instance command will be the
value of ptrName
For example.
Performs a C cyle on the dataway connected to
object.
object is a CCCUSB object
constructed by any of the methods described above.
Executes a cccusbreadoutlist::CCCUSBReadoutList
(see cccusbreadoutlist(3ccusb)).
readout-list is the name
of the list and maxread
the maximum number of 16 bit words that can
be read by this list (written data is inline in the
list). object is a CCCUSB object
constructed by any of the methods described above.
The return value is the name of an encapsulated std::vector<uint16_t>. See EXECUTING LISTS for recipes for executing lists and getting data from the result. See as well cccusb::uint16_vector_get, cccusb::uint16_vector_size.
Sets the inhibit line on the CAMAC crate controlled
by object.
object is a CCCUSB object
constructed by any of the methods described above.
Loads a cccusbreadoutlist::CCCUSBReadoutList
object for later execution in response to an event or
scaler trigger.
object is a CCCUSB object
constructed by any of the methods described above.
listNum is the number of the
list to be loaded. The list numbers is either
0 for the event list or
1 for the scaler list.
readout-list is a
cccusbreadoutlist::CCUSBReadoutList
object instance name. See
cccusbreadoutlist(3ccusb) for
information about how to create these.
The command returns 0 on successful completion, a negative number is returned on failure.
Reads the DGGA register of the CC-USB module
represented by object.
object is a CCCUSB object
constructed by any of the methods described above.
The DGGA register controls the width and
delay of one of the CC-USB's gate and delay generators.
See section 3.3.7 of the CC-USB manual for
more information about this register.
Same as readDGGA but reads the B gate and delay register control register.
Reads the CC-USB Gate and delay generated extended
range register. See Section 3.3.7 of the CC-USB
manual.
object is a CCCUSB object
constructed by any of the methods described above.
Reads the delays register of the CC-USB. See
Section 3.3.3 of the CC-USB manual for a
description of this register.
object is a CCCUSB object
constructed by any of the methods described above.
Reads the CCUSB device source selectors register.
This is described in section 3.3.6 of the CC-USB
manual.
object is a CCCUSB object
constructed by any of the methods described above.
Reads the CC-USB firmware id register.
The bit fields of this register are described by
section 3.3.1 of the CC-USB manual.
object is a CCCUSB object
constructed by any of the methods described above.
Reads the CC-USB global mode register. This register
iis described in section 3.3.2 of the CC-USB
manual.
object is a CCCUSB object
constructed by any of the methods described above.
Reads the LAM trigger register. The CC-USB
manual calls this register the LAM Mask register
and describes it in section 3.3.9.
object is a CCCUSB object
constructed by any of the methods described above.
Reads the LED Selector register. This register is
descsribed in section 3.3.5 of the CC-USB manual.
object is a CCCUSB object
constructed by any of the methods described above.
Reads the output selector register. This register
is described in section 3.3.5 of the CC-USB manual.
object is a CCCUSB object
constructed by any of the methods described above.
Read the counts in Scaler A. The scalers are
described in Section 3.3.8 of the CC-USB manual
with how to define what makes them count described
in section 3.3.6.
object is a CCCUSB object
constructed by any of the methods described above.
Same as readScalerA however the B scaler is read.
Read the Scaler readout control register.
The CC-USB manual refers to this as the
ACS (Auxiliary Camac Stack) register in some places
and the Scaler Readout Control register in others.
It is described in section 3.3.4 of the manual.
object is a CCCUSB object
constructed by any of the methods described above.
Reads the USB Bulk transfer setup register. This
is described in section 3.3.10 of the CC-USB
manual.
object is a CCCUSB object
constructed by any of the methods described above.
Reads the serial number of the device selected by
usb-device. usb-device
is a usb device object that comes from one of the elements
of the enumerator returned by
cccusb::CCCUSB_enumerate. The
serial number is returned as a string object handle
that must be converte via cccusb::string_to_char.
For more information about device enumeration and serial
number strings see DEVICE ENUMERATION below.
Most CC-USB operations require a USB bulk transfer to
the CC-USB and a transfder from the CC-USB. These
transfers are done with a timeout so that if
the target does not respond, the request eventually
does terminate. This sets the timeout for
those requests to be ms
milliseconds.
object is a CCCUSB object
constructed by any of the methods described above.
Performs a non-data transfer operation.
n specifies the CAMAC slot
that will be the target of this operation.
a specifies the subaddress
and f specifies the
function code. The function code must be in one
of the ranges: [8..15] [24..31].
The command returns a mask of the Q and X
responses from the dataway. See VARIABLES below
for the Q and X bits in this mask.
object is a CCCUSB object
constructed by any of the methods described above.
Performs a 16 bit read from the module and sub
address specified by n and
a. The CAMAC function
code f must be in the range
[0..7].
The command returns the data in the lower 16 bits of the value and the Q/X resonse in the upper byte (bits 24 through 31). Thus to extract the Q/X:
See VARIABLES below for information about the how to extract the Q and X bits from theqx variable in the example
above.
object is a CCCUSB object
constructed by any of the methods described above.
Same as simpleRead16 above, however the data transferred is 24 bits wide. The Q/X response is still in bits 24 through 31. The example below shows how to extract the data and the Q/X resopnse:
object is a CCCUSB object
constructed by any of the methods described above.
Performs a write of the 16 bit data d
to the module and subaddress specified by
n and a
via the CAMAC function code f.
f must be in the range
[16..23]. The command returns
the Q and X mask. See VARIABLES below for information
about which bits are Q and which X.
object is a CCCUSB object
constructed by any of the methods described above.
Same as simpleWrite16 however
the bottom 24 bits of d
are transferred.
Removes the dataway inhibit.
object is a CCCUSB object
constructed by any of the methods described above.
Writes the CC-USB action register.
This register is described in section 3.2.1
of the CC-USB manual.
object is a CCCUSB object
constructed by any of the methods described above.
Writes value
to the control register for Gate and Delay
A. This register is described in section
3.3.7 of the CC-USB manual.
object is a CCCUSB object
constructed by any of the methods described above.
Same as writeDGGA however the control register for gate and delay generator B is written.
Writes value to
the gate and delay extended delay register.
See section 3.3.7 of the CC-USB manual for a description
of this registers.
object is a CCCUSB object
constructed by any of the methods described above.
Writes value to the delays
register. This register is described in section
3.3.3 of the CC-USB manual.
object is a CCCUSB object
constructed by any of the methods described above.
Writes value to the
device source selector register. This
register is described in section 3.3.6 of the
CC-USB manual.
object is a CCCUSB object
constructed by any of the methods described above.
Writes value to the global
mode register. See section 3.3.2 of the CC-USB
manual for a description of this register.
object is a CCCUSB object
constructed by any of the methods described above.
Writes value to the LAM
triggers register. The CC-USB manual refers
to this register as the LAM Maks register
and describes it in section 3.3.9
object is a CCCUSB object
constructed by any of the methods described above.
Writes value to
the LED selector register. This register
is described in section 3.3.5 of the CC-USB manual.
object is a CCCUSB object
constructed by any of the methods described above.
Writes value to the
output selectors register of the CC-USB.
This register is described in section 3.3.5 of
the CC-USB manual.
object is a CCCUSB object
constructed by any of the methods described above.
Writes value to
the scaler control register/ACS Control
register. This register is described in section
3.3.4 of the CC-USB manual.
object is a CCCUSB object
constructed by any of the methods described above.
Writes value to the USB
bulk transfer setup register. Section 3.3.10 of
the CC-USB manual describes this register.
object is a CCCUSB object
constructed by any of the methods described above.
Performs a Z cycle on the camac dataway.
object is a CCCUSB object
constructed by any of the methods described above.
Deletes a swig wrapper for a CCCUSB
wrapper.
Returns a Tcl string equivalent of a
std::string object identifier
string-objecdt.
std::string
object identifiers are returned from the
serialNo method. See
DEVICE ENUMERATION below for more information.
Returns element
index
of vector-object
where that is an object identifier for a
std::vector<uint16_t>.
This is required to fetch items out of the data
that comes back from the executeList
command. For more information see EXECUTING LISTS
below.
Returns the size of vector-object
where vector-object is an
object identifier for a
std::vector<uint16_t>. This
is typically used when processing data from running
a list. See EXECUTING LISTS Below for more information.
The USB bus is a hotplug bus. Device enumeration is the process of determining the set of devices plugged into the USB bus at a point in time. The goal of device enumeration is normally to access a specific device of the desired device type. In our case we are interested in creating a CCCUSB object connected to CC-USB with a specific serial number.
If you are using the CCUSBReadout framework, you normally don't need to do this. The framework has already enumerated and opened the device and is passes you the appropriate object id. If you are writing a pure Tcl CC-USB application, you will need to read and understand this section.
The starting point of device enumeration is the cccusb::CCCUSB_enumerate command. This returns an object id for a std::vector<usb_device*>. This is unfortunately not directly accessible in Tcl.
the cccusb package provides two commands to tear apart the return from a call to cccusb::CCCUSB_enumerate:
which returns the size of the returned vector
Which fetches a specific usb_device pointer object id.
Once you have a usb_device pointer object id you can do two things with it. You can obtain the serial number string of the associated CC-USB controller or create a CCCUSB object with which you can perform operations on the controller and the CAMAC modules in its crate.
Normally you want to do both, you want to enumerate the controllers and either match them against a desired serial number or display them for the user to choose. The example below enumerates the CC-USB's and displays their serial numbers on stdout:
Example 1. Listing CC-USB Serial numbers (Tcl).
lappend auto_path /usr/opt/daq/10.1/lib
package require cccusb
set e [cccusb::CCCUSB_enumerate]
set ccount [cccusb::usb_device_vector_size $e]
for {set i 0} {$i < $ccount} {incr i} {
set usbdev [cccusb::usb_device_vector_get $e $i]
set serial [cccusb::string_to_char [cccusb::CCCUSB_serialNo $usbdev]]
puts $serial
}
Note how cccusb::usb_device_vector_size and cccusb::usb_device_vector_get are used to get usb_device* object ids. Note as well how a specific object id is then passed to cccusb::CCCUBS_serialNo and the output of that converted to a Tcl string via cccusb::string_to_char
The next example demonstrates a Tcl proc that returns a CCCUSB object command name that is connected to a specific CC-USB specified by serial number or generates an error if that serial number does not exist.
Example 2. Creating a CCCUSB object by serial number (Tcl).
lappend auto_path /usr/opt/daq/10.1/lib
package require cccusb
...
proc openCamac serialNo {
set e [cccusb::CCCUSB_enumerate]
set ccount [cccusb::usb_device_vector_size $e]
for {set i 0} {$i < $ccount} {incr i} {
set usbdev [cccusb::usb_device_vector_get $e $i]
set serial [cccusb::string_to_char [cccusb::CCCUSB_serialNo $usbdev]]
if {$serial eq $serialNo} {
return [cccusb::CCCUSB -args $usbdev]
}
}
error "No CC-USB with serial number $serialNo is available"
}
The pattern of this code follows the pattern of the previous
example. The only difference is that when the serial number
matches the requested serialNo parameter,
a CCCUSB object is created. SWIG is allowed to choose the
object command (the -args option does that),
which is returned to the caller.
The CC-USB has the ability to execute list of camac instructions. Immediate list execution is supported by the cccusb package via the executeList command. Lists can also be downloaded to CC-USB memory for execution in data acquisition mode in response to event and scaler triggers. This is supported via the loadList command.
This section describes how to use executeList and how to access any data read by those lists (written data is stored in the list itself). Please refer to CCCUSBReadoutList(3ccusb) for reference material on the Tcl package for constructing these lists.
In order to execute a list on an existing CCCUSB class/command you must
Construct the list of operations to perform
Use executeList to perform the operations in the list, specifying a maximum number of 16 bit words of data to be read by the list.
The value of the executeList command is an object id for a std::vector<uint16_t>. Use the cccusb::uint16_vector_size command to determine how many words were actually read. Use the cccusb::uint16_vector_get command to fetch elements of that vector.
The code fragment below shows how to extract data from the
returned data. In it, assume that the variable
c holds a
CCCUSB object command and the variable l
holds the object command of a CCCUSBReadoutList object.
The creates a hexadecimal dump of the returned words:
set result [$c executeList $l 1000]; # No more than 1000 wds to read.
set nRead [cccusb::uint16_vector_size $result]
for {set i 0} {$i < $nRead} {incr i} {
puts [format %x [cccusb::uint16_vector_get $result $i]]
}
Note that the executeList requires a number which is the maximum number of uint16_t values that will be read by the list. This is used to allocate the read buffer. The actual count of the words read is then used to fill the vector returned by that command.
The cccusb package exports the following variables:
cccusb::CCCUSB_XContains the mask of the X response in a Q/X word. For the simple control and write operations, you can directly test these bits against the command return value. For simple read operations, you need to take the return value and shift right 24 bits before checking for this bit.
cccusb::CCCUSB_QContain the max of the Q response. See above for how to use it to check for Q responses in operations.