# CONFIGPIN Example

Syntax: CONFIGPIN

    ' CONFIGPIN.BPX
    ' This example demonstrates the use of the CONFIGPIN command.
    ' All I/O pins are set to inputs with various combinations of
    ' Pull-Up Resistor, Logic Threshold and Schmitt-Trigger properties.
    ' While running, this program will constantly display the state of all
    ' input pins along with an indication of the configuration for each group
    ' of pins. Try connecting different input signals to the I/O pins (such as
    ' buttons, a function generator with a slowing sweeping signal (0 to 5
    ' VDC)) or simply running your fingers across the I/O pins and note how
    ' they react based upon their configured property.

    ' {$STAMP BS2px}
    ' {$PBASIC 2.5}

    #IF $STAMP <> BS2PX #THEN
      #ERROR "This program requires a BS2px."
    #ENDIF

    Setup:
      CONFIGPIN DIRECTION, %0000000000000000        ' Set all I/O pins to inputs
      CONFIGPIN PULLUP, %1111111111110000           ' Enable pull-ups on pins 4 - 15
      CONFIGPIN THRESHOLD, %0000111100000000        ' Set P8-P11 to CMOS, others TTL
      CONFIGPIN SCHMITT, %1111000000000000          ' Enable Schmitt-Triggers P12-P15

      DEBUG CLS,
            " BS2px INPUT PIN CONFIGURATION TEST", CR,
            "=========================================================", CR,
            "     P15-P12: Pull-Up Resistors, TTL & Schmitt-Triggers  ", CR,
            "    /                                                    ", CR,
            "   /     P11-P8: Pull-Up Resistors & CMOS                ", CR,
            "  /     /                                                ", CR,
            "  |    /     P7-P4: Pull-Up Resistors & TTL              ", CR,
            "  |    |    /                                            ", CR,
            "  |    |    |     P3-P0: Normal                          ", CR,
            "  |    |    |    /                                       ", CR,
            "  |    |    |    |                                       ", CR,
            "---- ---- ---- ----                                      "
    Main:
      DO
        ' Display input pin states
        DEBUG CRSRXY, 0, 12 ,
              BIN4 IND, " ", BIN4 INC, " ", BIN4 INB, " ", BIN4 INA
      LOOP

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8/8/2012