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GLAST/LAT > DAQ and FSW > FSW > Doxygen Index > GNAT / dev

Constituent: gnat_xbrd     Tag: mv2304

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xbrd_io.h File Reference

Defines the input/output methods for the VME XBRD interface. More...

#include "GNAT/xbrd_hw.h"

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Functions
int	xbrd_Probe (xbrdHandle gx)
	attempts simple test for board existance
int	xbrd_HWver (xbrdHandle gx, unsigned short int *version, unsigned short int *revision)
	fetchs the hardware version and revision numbers from the board
int	xbrd_SWver (xbrdHandle gx, unsigned short int *version, unsigned short int *revision)
	fetchs the software version and revision numbers from the board
int	xbrd_Version (xbrdHandle gx, unsigned short hwVer, unsigned short hwRev, unsigned short swVer, unsigned short swRev)
	Checks the COMM Board hardware version/revision.
int	xbrd_DACload (xbrdHandle gx, unsigned short nDAC, unsigned int val)
	Loads the specified DAC with val.
int	xbrd_DACread (xbrdHandle gx, unsigned short nDAC, unsigned int *val)
	Reads the specified DAC.
int	xbrd_ADCload (xbrdHandle gx, unsigned short nADC, unsigned int val)
	Loads the specified ADC with val.
int	xbrd_ADCread (xbrdHandle gx, unsigned short nADC, unsigned int *val)
	Reads the specified ADC.

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Detailed Description

Defines the input/output methods for the VME XBRD interface.

Author:

Curt Brune -- curt@slac.stanford.edu

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Function Documentation

int xbrd_ADCload (  xbrdHandle  gx, unsigned short  nADC, unsigned int  val )

Loads the specified ADC with val. Parameters: gx  handle of device nADC  index of ADC to load val  32-bit value to load into ADC See also: xbrd_ADCread() Returns: OK on success Writing to the ADC starts the acquisition cycle. The value written is ignored.

int xbrd_ADCread (  xbrdHandle  gx, unsigned short  nADC, unsigned int *  val )

Reads the specified ADC. Parameters: gx  handle of device nADC  index of ADC to read val  pointer to storage for 32-bit ADC value. See also: xbrd_ADCload() Returns: OK on success On read bit 13 indicates the acquisition cycle is complete and that the 12-bit value is valid. If this bit is not set then return XBRD_ERR_ADC_NOT_READY.

int xbrd_DACload (  xbrdHandle  gx, unsigned short  nDAC, unsigned int  val )

Loads the specified DAC with val. Parameters: gx  handle of device nDAC  index of DAC to load val  32-bit value to load into DAC See also: xbrd_DACread() Returns: OK on success This is a "raw" interface to the MAXIM MAX5121 part, which is a 12-bit DAC. See the spec sheet for more info. http://www.maxim-ic.com/quick_view2.cfm/qv_pk/1987 To perform a normal "write value" operation use the following pattern: 1 1 1 1 1 1 5 4 3 2 1 0 9 8 7 6 5 4 3 2 1 0 =============================== 0 1 0 D D D D D D D D D D D D 0 0 - bit is not set 1 - bit is set D - data bit of 12-bit DAC value

int xbrd_DACread (  xbrdHandle  gx, unsigned short  nDAC, unsigned int *  val )

Reads the specified DAC. Parameters: gx  handle of device nDAC  index of DAC to read val  pointer to storage for 32-bit DAC value. See also: xbrd_DACload() Returns: OK on success When writing the DAC register it takes some settling time before the physical DAC part has consumed the new value. When reading the DAC bit 16 indicates if the DAC has completely settled. If this bit is not set on read return XBRD_ERR_DAC_NOT_READY .

int xbrd_HWver (  xbrdHandle  gx, unsigned short int *  version, unsigned short int *  revision )

fetchs the hardware version and revision numbers from the board Parameters: gx  handle of device version  3 LSB contain hardware version number revision  3 LSB contain hardware revision number Returns: OK on success See also: xbrd_SWver()

int xbrd_Probe (  xbrdHandle  gx  )

attempts simple test for board existance Parameters: gx  handle of device to probe Returns: OK if board probed.

int xbrd_SWver (  xbrdHandle  gx, unsigned short int *  version, unsigned short int *  revision )

fetchs the software version and revision numbers from the board Parameters: gx  handle of device version  3 LSB contain software version number revision  3 LSB contain software revision number Returns: OK on success See also: xbrd_HWver()

int xbrd_Version (  xbrdHandle  gx, unsigned short  hwVer, unsigned short  hwRev, unsigned short  swVer, unsigned short  swRev )

Checks the COMM Board hardware version/revision. Parameters: gx  handle of device hwVer  VME XBRD hardware version hwRev  VME XBRD hardware revision swVer  VME XBRD firmware version swRev  VME XBRD firmware revision Returns: OK on success

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