SPice configuration instruction

There is one special SPLat instruction associated with Touch of SPice boards.

	SPiceConfigU

This is used where the SPice pins are configurable as to their functions. It uses the contents of U to configure the SPice pins. The number in U(0) configures the first pin, the number in U(1) configures the second pin etc. The values are:

0 = No change. The pins configuration remains unaltered

1 = Digital Output

2 = Digital Input

3 = Analog Input

4 = Pulse Width Modulated (PWM) Output

5 = Digital Bidirectional

6 = Counting Input

Other numbers could also apply. This mechanism is entirely a function of the individual SPLat board, so you need to refer to the documentation for the board you are using. The definition of pin numbers is also product dependent (but will not necessarily be the same as I/O numbers).

Here's an example of configuring the SPice pins for a SP10213 DC Motor Control board

;I/O assignment (MMi203)
;-- digital outputs --
oDirection        oEQU  16

;-- analogue outputs --
aoMotorSpeed       EQU   9


;SPICE configuration values, ref SpiceConfigU
SPICEkUnchanged   #EQU  0                             ;No change. The pins configuration remains unaltered
SPICEkDOut        #EQU  1                             ;Digital Output
SPICEkDIn         #EQU  2                             ;Digital Input
SPICEkAIn         #EQU  3                             ;Analog Input
SPICEkAOut        #EQU  4                             ;Pulse Width Modulated (PWM) Output
SPICEkBIO         #EQU  5                             ;Digital Bidirectional
SPICEkCounter     #EQU  6                             ;Counting Input

   ;configuration code
   SetU           0,SPICEkDOut                        ;direction relay
   SetU           1,SPICEkUnchanged
   SetU           2,SPICEkUnchanged
   SetU           3,SPICEkUnchanged
   SetU           4,SPICEkAOut                        ;motor speed
   SetU           5,SPICEkUnchanged
   SpiceConfigU