pasm and array ?? and how the if work ???

Anubisbot · 2008-09-19 19:59

Hi every one ,

i am trying to get my spin code to pasm , but i am not shure what i am doing, since it includes some shiffting.

here is my spin code

PRI RGB_loop | t
  ' start the time value at zero
  ' PWM Loop
  dira[noparse][[/noparse]27..19]~~                  ' Make pin 0, pin 1, and pin 2 all outputs


  t := 0
  repeat 
    outa[noparse][[/noparse]27..19] := RGB_state[noparse][[/noparse]t] >> 19         ' Set states of all  pwm pins simultaneously Shift 16
    t+ = 1                                   ' Change to the next state
    if t == TableSize                        ' If t goes off the edge of the table  NOTE change
      t := 0

what it does is it takes a long RGB_State array and puts it contents in the output of my propeller.
The table size is 250 and so its a continus running loop

Here is my Pasm code as far i can get with my knowledge ...

DAT

        org

entry   mov dira, diraval                                      'set APIN to output
        rdlong ta, 0

        
:loop   rdlong value, RGB_state(ta)  
        mov outa,     value
        add ta  ,     1
        
        jmp #:loop

        
diraval long %0000_1111_1111_1000_0000_0000_0000_0000                 'APIN=15 BPIN=16
value   res 1   
ta       res 1

I hope some one can help , best regards Anubisbot....

Post Edited (Anubisbot) : 9/19/2008 8:54:51 PM GMT