Sensoray 421 Manual do Utilizador descarregar pdf (Página 23)

Sensoray Model 421 Instruction Manual Page 21

D/A Interface Procedures

SUB DacEnable (Value%)

‘****************************************************************************

‘ Collectively enable or disable all DAC outputs.

‘

‘ Imports:

‘ Value% (boolean): TRUE enables outputs, FALSE disables outputs.

‘‘****************************************************************************

SELECT CASE Value%

CASE TRUE: chctrlImage% = chctrlImage% OR DACBIT

CASE FALSE: chctrlImage% = chctrlImage% AND (DACBIT XOR -1)

END SELECT

OUT CHCTRL, 8 OR chctrlImage%

END SUB

SUB WriteDAC (DACid%, Value%)

‘****************************************************************************

‘ Write data value to DAC output register and refresh DAC output.

‘

‘ Imports:

‘ DACid% = DAC channel in range 0:3.

‘ Value% = data value to be written to DAC in range 0:4095.

‘****************************************************************************

‘ Copy data value to DAC input register

OUT DAC0LSB + DACid% * 2, Value% AND 255

OUT DAC0LSB + DACid% * 2 + 1, Value% \ 256

‘ Update DAC outputs

junk% = INP(LDAC)

END SUB

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Sensoray 421 Manual do Utilizador Página 23