diff --git a/documentation/areaDetectorDoc.html b/documentation/areaDetectorDoc.html index 9d4dc2d..048dd39 100755 --- a/documentation/areaDetectorDoc.html +++ b/documentation/areaDetectorDoc.html @@ -10,7 +10,7 @@

areaDetector: EPICS Area Detector Support

- July 30, 2009

+ August 15, 2009

Mark Rivers

@@ -26,22 +26,16 @@
  • asynPortDriver
  • NDArray
  • NDArrayPool
    • +
  • NDAttribute
    • +
  • NDAttributeList
    • +
  • PVAttribute
    • +
  • paramAttribute
  • asynNDArrayDriver
    • + +
  • Detector drivers + -
    • -
  • Plugins - -
    • -
  • Detector drivers -
    • + +
  • Plugins + +
    • +
  • MEDM screens
  • Viewers

    • The areaDetector module provides a general-purpose interface for area (2-D) detectors - in EPICS. It is intended to be used with + in EPICS. It is intended to be used with a wide variety of detectors and cameras, ranging from high frame rate CCD and CMOS cameras, pixel-array detectors such as the Pilatus, and large format detectors like the MAR-345 online imaging plate.

    @@ -90,7 +96,7 @@
  • Provide a mechanism for device-independent real-time data analysis such as regions-of-interest and statistics.
  • Provide detector drivers for commonly used detectors in synchrotron applications. - These include Prosilica GigE video cameras, IEEE 1394 (Firewire) cameras, MAR-CCD + These include Prosilica GigE video cameras, IEEE 1394 (Firewire) cameras, ADSC and MAR CCD x-ray detectors, MAR-345 online imaging plate detectors, the Pilatus pixel-array detector, Roper Scientific CCD cameras, and the Perkin-Elmer amorphous silicon detector.
    • @@ -140,7 +146,7 @@
  • libCom. libCom from EPICS base provides operating-system independent functions for threads, mutexes, etc.
    • -
  • asyn. asyn is a module +
  • asyn. asyn is a module that provides interthread messaging services, including queueing and callbacks.

    • @@ -179,7 +185,7 @@

    Implementation details

    - The areaDetector module depends heavily on + The areaDetector module depends heavily on asyn. It is the software that is used for interthread communication, using the standard asyn interfaces (e.g. asynInt32, asynOctet, etc.), and callbacks. In order to minimize the amount of redundant code in drivers, areaDetector has been @@ -195,7 +201,7 @@ They inherit from the asynPortDriver base C++ class that is provided in the asyn module. That base class handles all of the details of registering the port driver, registering the - supported interfaces, and registering the required interrupt sources. The + supported interfaces, and registering the required interrupt sources. The asynPortDriver class documentation describes this class in detail.

    @@ -214,15 +220,6 @@ NDDimension structure. The NDArray class documentation describes this class in detail.

    -

    - NDAttribute

    -

    - The NDAttribute is a class for linking metadata to an NDArray. An NDattribute has - a name, description, data type, value, source type and source information. There - are methods to set and get the information for an attribute, and NDArray provides - methods to add and delete attributes from an NDArray object. The - NDAttribute class documentation describes this class in detail. -

    NDArrayPool

    @@ -234,6 +231,44 @@ minimizes the copying of array data in plugins. The NDArrayPool class documentation describes this class in detail.

    +

    + NDAttribute

    +

    + The NDAttribute is a class for linking metadata to an NDArray. An NDattribute has + a name, description, data type, value, source type and source information. Attributes are + identified by their names, which are case-insensitive. There + are methods to set and get the information for an attribute. + The + NDAttribute class documentation describes this class in detail. +

    +

    + NDAttributeList

    +

    + The NDAttributeList implements a linked list of NDAttribute objects. + NDArray objects contain an NDAttributeList which is how attributes are associated with + an NDArray. There are methods to add, delete and search for NDAttribute objects in an + NDAttributeList. Each attribute in the list must have a unique name, which is case-insensitive. + The + NDAttributeList class documentation describes this class in detail. +

    +

    + PVAttribute

    +

    + The PVAttribute class is derived from NDAttribute. It obtains its value by monitor callbacks from an EPICS PV, + and is thus used to associate current the value of any EPICS PV with an NDArray. + The + PVAttribute class documentation describes this class in detail. +

    +

    + paramAttribute

    +

    + The paramAttribute class is derived from NDAttribute. It obtains its value from the current value + of a driver or plugin parameter. The paramAttribute class is typically used when it is important to have + the current value of the parameter and the value of a corresponding PVAttribute might not be current because the + EPICS PV has not yet updated. + The + paramAttribute class documentation describes this class in detail. +

    asynNDArrayDriver

    @@ -244,7 +279,7 @@

    The file asynNDArrayDriver.h - defines a number of enumerations, including NDStdDriverParams_t, which are the parameters + defines a number of enumerations, including NDStdDriverParam_t, which are the parameters that all NDArray drivers and plugins should implement if possible. These parameters are defined by enum values with an associated asyn interface, and access (read-only or read-write). The EPICS database ADBase.template provides access to these standard @@ -259,7 +294,10 @@

  • Access: Read-write (r/w) or read-only (r/o).
  • drvUser string: The string used to look up the parameter in the driver through the drvUser interface. This string is used in the EPICS database file for - generic asyn device support to associate a record with a particular parameter.
    • + generic asyn device support to associate a record with a particular parameter. It is + also used to associate a paramAttribute + with a driver parameter in the XML file + that is read by asynNDArrayDriver::readNDAttributesFile
  • EPICS record name: The name of the record in ADBase.template. Each record name begins with the two macro parameters $(P) and $(R). In the case of read/write parameters there are normally two records, one for writing the value, and a second, @@ -410,7 +448,7 @@ r/o - Size of the aray data in the Z direction + Size of the array data in the Z direction ARRAY_SIZE_Z @@ -418,6 +456,22 @@ longin + + + NDArraySize + + asynInt32 + + r/o + + Total size of the array data in bytes + + ARRAY_SIZE + + $(P)$(R)ArraySize_RBV + + longin + File saving parameters (records are defined in NDFile.template) @@ -594,7 +648,7 @@ r/w - Manually save the most recent image to a file when value=1 + Manually save the most recent array to a file when value=1 WRITE_FILE @@ -652,15 +706,15 @@ CAPTURE - $(P)$(R)FileCapture
    - $(P)$(R)FileCapture_RBV + $(P)$(R)Capture
    + $(P)$(R)Capture_RBV busy
    bi - NDNumCapture + NDFileNumCapture asynInt32 @@ -670,15 +724,15 @@ NUM_CAPTURE - $(P)$(R)FileNumCapture
    - $(P)$(R)FileNumCapture_RBV + $(P)$(R)NumCapture
    + $(P)$(R)NumCapture_RBV longout
    longin - NDNumCaptured + NDFileNumCaptured asynInt32 @@ -688,29 +742,10 @@ NUM_CAPTURED - $(P)$(R)FileNumCaptured_RBV + $(P)$(R)NumCaptured_RBV longin - - - NDArrayCounter - - asynInt32 - - r/w - - Counter that increments by 1 each time an array is acquired. Can be reset by writing - a value to it. - - ARRAY_COUNTER - - $(P)$(R)ArrayCounter
    - $(P)$(R)ArrayCounter_RBV - - longout
    - longin - Array data @@ -744,14 +779,72 @@ r/w - The image data as an NDArray object + The array data as an NDArray object NDARRAY_DATA - N/A. EPICS access to image data is through NDStdArrays plugin. + N/A. EPICS access to array data is through NDStdArrays plugin. N/A + + + NDArrayCounter + + asynInt32 + + r/w + + Counter that increments by 1 each time an array is acquired. Can be reset by writing + a value to it. + + ARRAY_COUNTER + + $(P)$(R)ArrayCounter
    + $(P)$(R)ArrayCounter_RBV + + longout
    + longin + + + + N/A + + N/A + + r/o + + Rate at which arrays are being acquired. Computed in the ADBase.template database. + + N/A + + $(P)$(R)ArrayRate_RBV + + calc + + + + Array attributes + + + + NDAttributesFile + + asynOctet + + r/w + + The name of an XML file defining the PVAttributes and paramAttributes to be + added to each NDArray by this driver or plugin. The format of the XML file is described + in the documentation for + asynNDArrayDriver::readNDAttributesFile(). + + ND_ATTRIBUTES_FILE + + $(P)$(R)NDAttributesFile + + waveform + Debugging control @@ -783,7 +876,7 @@

    The file ADDriver.h defines - a number of enumerations, including ADStdDriverParams_t, which are the parameters + a number of enumerations, including ADStdDriverParam_t, which are the parameters that all areaDetector drivers should implement if possible.

    @@ -1036,7 +1129,7 @@ @@ -1055,7 +1148,7 @@ @@ -1220,16 +1313,18 @@ + $(P)$(R)Acquire
    + $(P)$(R)Acquire_RBV + busy
    + bi - - - - - - - - - @@ -1554,6 +1633,44 @@
    r/w - Reverse image in the X direction
    + Reverse array in the X direction
    (0=No, 1=Yes)    		 REVERSE_X r/w - Reverse image in the Y direction
    + Reverse array in the Y direction
    (0=No, 1=Yes)    		 REVERSE_Y r/w - Start (1) or stop (0) image acquisition. This record is linked to an EPICS busy + Start (1) or stop (0) image acquisition. This is an EPICS busy record that does not process its forward link until acquisition is complete. Clients should write 1 to the Acquire record to start acquisition, and wait for Acquire to go to 0 to know that acquisition is complete. ACQUIRE - $(P)$(R)Acquire - bo
    @@ -1334,22 +1429,6 @@ longin
    - N/A - N/A - r/o - Rate (Hz) at which ImageCounter is incrementing. Computed in database. - N/A - $(P)$(R)ImageRate_RBV - calc
    ADTimeRemaining
    +

    + Guidelines and rules for drivers

    +

    The following are guidelines and rules for writing areaDetector drivers

    +

    MEDM screens