1. mesdk.exe Driver
2. Interrupt_Description.txt File Contents

Interrupt_Description.txt Driver File Contents (mesdk.exe)

To implement the interrupt functions on the me8100 board
the following order of operations should be followed:
--------------------------------------------------------
           Interrupt on Pattern Match
--------------------------------------------------------
1.  Call "me8100DIOSetPattern".  
    The parameter "pattern" will define the pattern desired.  
    When this pattern appears on the inputs an interrupt
    will occur.
2.  Call "me8100DIOSetTristateOFF"
3.  Call "me8100SetSinkSourceMode" and set the outputs to source
    for example.
4.  Call the "me8100SetIntMode" function.  The mode must
    be set for INTERRUPT_ON_PATTERN_COMPARE.
5.  Call "me8100EnableInt" to enable the interrupt.
    When the selected pattern appears on the inputs, an
    interrupt will occur and the service routine will
    be executed.
6.  By calling the function "me8100GetIrqCnt", the 
    number of interrupts can be determined.
7.  Call "me8100DisableInt"

---------------------------------------------------------
          Interrupt on Bit Pattern Change
---------------------------------------------------------
1.  Call "me8100DIOSetTristateOFF"
2.  Call "me8100SetSinkSourceMode" and set the outputs to 
    "source" for example.
3.  Call the "me8100SetIntMode" function.  The mode must
    be set for INTERRUPT_ON_BIT_CHANGE.
4.  Call "me8100DIOSetMask"
    The parameter "mask" will define which bits are to be 
    monitored.  When one of these bits changes state, an
    interrupt will occur. Use 0xFFFF to monitor all bits.
5.  Call "me8100EnableInt" to enable the interrupt.
6.  By calling the function "me8100GetIrqCnt", the 
    number of interrupts can be determined.
7.  By calling the function "me8100DIGetIntStatus", the bit
    that caused the interrupt can be determined from 
    the value pointed to by the "BitValue" parameter.
8.  Call "me8100DisableInt"

Note:  A known pattern will exist on the input lines.  This 
       standard pattern defines the neutral state.  An interrupt
       occurs when a bit changes state and alters the standard
       pattern.  The "mask" parameter in the "me8100DIOSetMask"
       function can be set to monitor all bits by setting it
       to 0xFFFF.  If for example, only selected bits are chosen
       to be monitored (example:  set "mask" to 0x000F to monitor
       the 4 lower bits), a bit change on any other bits (the 12
       high bits in this example) will NOT cause an interrupt. 
       Only a bit change on the bits activated by the "mask" 
       parameter will cause an interrupt.