Found something in Programming XC on XMOS Devices PDF

[AtomSoft]

If you go to page 11/139



Should it be:

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void swap (int &x, int &y) {
    int tmp = x;
    x = y;
    y = tmp;
}

[Folknology]

Jason (Lopez) Good catch, maybe there should be an errata section on the forums for documentation/books etc..
Jason (XCore admin) could that be added?

[AtomSoft]

heh thanks im just reading through this and seen it nothing special really :D

[AtomSoft]

Since this is a getting start thread i should add to it heh...

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# include <xs1.h>

in port oneBit = XS1_PORT_1A ;
out port counter = XS1_PORT_4A ;

int main ( void ) {
    int x;
    int i = 0;
    oneBit :> x;
    while (1) {
        oneBit when pinsneq (x) :> x;
        counter <: ++i;
    }
}

Ok to clarify .. because the PDF wasnt clear to me... What this is doing is sampling the PIN 1A and storing the value into x....

Now lets say x = 0 @

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oneBit :> x; 

The below line basically gets the PIN 1A value and waits until its NOT EQUAL to x (initial value) and when its not it places the new value into x...

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oneBit when pinsneq (x) :> x;

This code increments i by 1 (i = i +1) then stores it in counter variable..

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counter <: ++i;

Would that be exactly how it works? wasnt that easier to understand if it was correct... heh

[jason]

Jason (Lopez) Good catch, maybe there should be an errata section on the forums for documentation/books etc..
Jason (XCore admin) could that be added?

I think the official errata can be found on the book page on XMOS.com.

For example for Programming on XMOS Devices. Scroll to the bottom.

I think it would be wise to raise a support ticket on the XMOS.com site so they can be aware of this and update it in one location, otherwise updates/edits will be hard to track for the people writing the books.

[AtomSoft]

i sent out a ticket.