Passing an array to a PUB?

Hugh

Can I pass arrays to a PUB?

e.g., if I have two arrays, arrayFirst[16] and arraySecond[16] can I call a PUB by, for example, dostuff[arrayFirst] and use either of these arrays, handling either by the same code?

I'd prefer to it this way, but one big array and multiple offsets might be another.

I've been going round in circles with various attempts at this.

Cheers
Hugh

Rayman

Yes, you can use the @ operator to pass the address on an array.
For your example, you'd use dostuff(@arrayFirst).

Then, you'd have something like:

Pub dostuff|pArray,y

and one way to access the array (if it is a long array) is
x:=long[pArray][y] where y is the index

PS: Also see below for "Similar threads"

Hugh

Thank you for the true enlightenment!

JonnyMac

As Ray points out, you can -- by passing the address of the array. Keep in mind that the code in the receiving method must know the type off array you're passing, a Spin can deal with bytes, words, and longs. For example, let's say you have a method called print_numbers() that will an array (of longs) for you. You could code it like this:

pub print_numbers(p_list, n) | idx

  idx := 0

  repeat n
    serial.dec(long[p_list][idx++]
    serial.tx(13)

If you want to make it more flexible, you could pass the array type (bytes per element) like this:

pub print_numbers(p_list, type, n) | idx

  idx := 0

  repeat n
    case type
      4:
        serial.dec(long[p_list][idx++]
      2:
        serial.dec(word[p_list][idx++]
      1:
        serial.dec(byte[p_list][idx++]
      other:
        return
    serial.tx(13)

Hugh

Thanks you - all sorted and working well.