'****************************************************************************
'Module DAC488HR
'This module contains I/O subroutines for the DAC488HR.
'
'The following parameters must be present in param.inc.
'gpibinP%, the GPIB input file number
'gpiboutP%, the GPIB output file number
'dac488hraddrP%, the IOTech DAC488HR/2 GPIB address
'****************************************************************************

'Open the parameter file
REM $INCLUDE: 'param.inc'

SUB dac488hrgetv (dacv!)

'****************************************************************************
'This subroutine gets the output voltage from the IOTech DAC488HR/2 output.
'
'Input parameters:
'  gpibinP%, GPIB input file number
'  gpiboutP%, GPIB output file number
'  dacaddrP%, the DAC GPIB address
'
'Output:
'  dacv!, the DAC voltage which is being output
'
'Zachary Wolf
'4/19/94
'****************************************************************************

'Get the GPIB I/O file numbers and the DAC address
gpibin% = gpibinP%
gpibout% = gpiboutP%
dacaddr% = dac488hraddrP%

'Put the DAC address in a string
dacaddr$ = STR$(dacaddr%)

'Set the GPIB terminators for the DAC
PRINT #gpibout%, "TERM OUT LF EOI"
PRINT #gpibout%, "TERM IN LF EOI"

'Get the DAC voltage value
PRINT #gpibout%, "OUTPUT " + dacaddr$ + ";V? X"
PRINT #gpibout%, "ENTER " + dacaddr$
INPUT #gpibin%, dacv$
dacv$ = MID$(dacv$, 2)
dacv! = VAL(dacv$)

END SUB

SUB dac488hrinit

'****************************************************************************
'This subroutine initializes the IOTech DAC488HR/2.
'
'Inputs from param.inc:
'  gpibinP%, GPIB input file number
'  gpiboutP%, GPIB output file number
'  dacaddrP%, the DAC GPIB address
'
'Zachary Wolf
'4/19/94
'****************************************************************************

'Get the GPIB I/O file numbers and the DAC address from the parameters
gpibin% = gpibinP%
gpibout% = gpiboutP%
dacaddr% = dac488hraddrP%

'Put the DAC address in a string
dacaddr$ = STR$(dacaddr%)

'Set the GPIB terminators for the DAC
PRINT #gpibout%, "TERM OUT LF EOI"
PRINT #gpibout%, "TERM IN LF EOI"

'Message
PRINT
PRINT "Initializing the DAC..."

'Get the DAC ID
PRINT #gpibout%, "OUTPUT " + dacaddr$ + ";U9 X"
PRINT #gpibout%, "ENTER " + dacaddr$
LINE INPUT #gpibin%, a$
PRINT a$

END SUB

SUB dac488hrsetupv

'****************************************************************************
'This subroutine sets up the IOTech DAC488HR/2 for static DC output.
'
'Inputs from param.inc:
'  gpibinP%, GPIB input file number
'  gpiboutP%, GPIB output file number
'  dacaddrP%, the DAC GPIB address
'
'Zachary Wolf
'4/19/94
'****************************************************************************

'Get the GPIB I/O file numbers and the DAC address from the parameters
gpibin% = gpibinP%
gpibout% = gpiboutP%
dacaddr% = dac488hraddrP%

'Put the DAC address in a string
dacaddr$ = STR$(dacaddr%)

'Set the GPIB terminators for the DAC
PRINT #gpibout%, "TERM OUT LF EOI"
PRINT #gpibout%, "TERM IN LF EOI"

'Set the output port to # 1
PRINT #gpibout%, "OUTPUT " + dacaddr$ + ";P1 X"

'Set the data format to signed volts
PRINT #gpibout%, "OUTPUT " + dacaddr$ + ";F0 X"

END SUB

SUB dac488hrv (v!)

'****************************************************************************
'This subroutine has the IOTech DAC488HR/2 output a voltage v!.
'
'Input:
'  v!, the voltage to output
'
'Input parameters:
'  gpibinP%, GPIB input file number
'  gpiboutP%, GPIB output file number
'  dac488hraddrP%, the DAC GPIB address
'
'Zachary Wolf
'4/19/94
'****************************************************************************

'Get the GPIB I/O file numbers and the DAC address
gpibin% = gpibinP%
gpibout% = gpiboutP%
dacaddr% = dac488hraddrP%

'Put the DAC address in a string
dacaddr$ = STR$(dacaddr%)

'Set the GPIB terminators for the DAC
PRINT #gpibout%, "TERM OUT LF EOI"
PRINT #gpibout%, "TERM IN LF EOI"

'Make sure the voltage is within the proper range
IF v! < 0! THEN v! = 0!
IF v! > 5! THEN v! = 5!

'Output the voltage to the DAC
PRINT #gpibout%, "OUTPUT " + dacaddr$ + ";V";
PRINT #gpibout%, USING "###.#####"; v!;
PRINT #gpibout%, " X"

END SUB