ADwin-Pro II Data Aquisition System

The ADwin-Pro II is a data aquisition system with eight channels of 16-bit voltage outputs and eight channels of 18-bit voltage inputs. The ADwin has a microprocessor and memory making it possible to upload a program that will perform some function. The programs are written in a language called ADwin basic. A simple program that we often use is the Readout.bas program shown below. This program repeatedly measures the eight inputs and displays the voltages.

REM *********************   Readout 1.0   *******************************
REM *****************************************************************

REM "Readout 1.0" reads out all voltage inputs at maximum speed
REM all other programs should refer to this program for adc tasks

REM OUTPUT:

' FPAR_1 ... FPAR_8:  analog input voltages [V]
' FPAR_9 : timestamp [s]

' DATA_20[8]:  analog input voltages [24 Bit]

' DATA_21[1-8]:  input voltages [V]
' DATA_21[9]:  timestamp [s]

REM *****************************************************************
REM *****************************************************************

#INCLUDE ADWINPRO_ALL.INC
 
DIM DATA_20[8] AS LONG
DIM DATA_21[9] AS FLOAT
DIM i AS LONG
DIM t AS LONG

INIT:
  REM AD Wandlung starten
  P2_START_CONVF(1,11111111b)
  
  globaldelay = 3000                      '  3000 : 10 µs
  t = 0
  
  FOR i=1 TO 8
    DATA_20[i]=8388608                    ' = Null (24 Bit)
  NEXT i
  
  FOR i=1 TO 9
    DATA_21[i]=0                          ' init data array
  NEXT i
  
EVENT:
  
  FPAR_9 = globaldelay*t*1E-8/3               ' timestamp [s]
  t = t + 1
  
  IF (t = 65535) THEN t = 0     ' t doesn't increase after 65535 at increment 0.00001 for whatever reason
  
  REM Wandlung abwarten
  P2_WAIT_EOCF(1,11111111b)
  
  REM Wandlungsergebnisse auslesen
  P2_READ_ADCF8_24B(1,DATA_20,1)
  
  REM voltage[V] = voltage[16Bit] * 20 / 65536 - 10  
  FPAR_1 = DATA_20[1] * 20 / 16777216 - 10
  FPAR_2 = DATA_20[2] * 20 / 16777216 - 10  
  FPAR_3 = DATA_20[3] * 20 / 16777216 - 10
  FPAR_4 = DATA_20[4] * 20 / 16777216 - 10
  FPAR_5 = DATA_20[5] * 20 / 16777216 - 10
  FPAR_6 = DATA_20[6] * 20 / 16777216 - 10
  FPAR_7 = DATA_20[7] * 20 / 16777216 - 10
  FPAR_8 = DATA_20[8] * 20 / 16777216 - 10
  
  P2_START_CONVF(1,11111111b)  
  
  DATA_21[1]=FPAR_1
  DATA_21[2]=FPAR_2  
  DATA_21[3]=FPAR_3  
  DATA_21[4]=FPAR_4  
  DATA_21[5]=FPAR_5  
  DATA_21[6]=FPAR_6  
  DATA_21[7]=FPAR_7  
  DATA_21[8]=FPAR_8
  DATA_21[9]=FPAR_9

readout.bas

If you are at a computer where ADwin basis is installed, you can download the program an run it. After ADwin basic starts, press the red 'B' button to boot the microprocessor, the green 'C' button to compile the code, and then the green run button.







Semiconductor Laboratory