MATLAB EMBEDDED IDE LINK 4 - FOR USE WITH TEXAS INSTRUMENTS CODE COMPOSER STUDIO Guide de l'utilisateur télécharger pdf (Page 302)

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101

iswritable

Like the isreadable, read,andwrite functions, iswritable checks

for valid address values. Illegal address values would be any address

space larger than the available space for the processor – 2

for the

C6xxx processor family and 2

for the C5xxx series. When the function

identiﬁes an illegal address, it returns an error m essage stating that

theaddressvaluesareoutofrange.

iswritable(rx,'channel') returns a Boolean value signifying

whether the RTDX channel speciﬁed by

channel and rx,isconﬁgured

for write operations.

Examples When you write scripts to run models in MATLA B software and CCS

IDE, the

iswritable function is very useful. Use iswritable to check

that the channel to which you are writing to is indeed conﬁgured

properly.

cc = ticcs;

rx = cc.rtdx;

% Define read and write channels to the processor linked by cc.

open(rx,'ichannel','r');

open(rx,'ochannel','w');

enable(rx,'ochannel');

enable(rx,'ichannel');

iswritable(rx,'ochannel')

ans=

iswritable(rx,'ichannel')

ans=

Nowthatyourscriptknowsthatitcanwriteto'ichanne'l, it proceeds

towritemessagesasrequired.

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MATLAB EMBEDDED IDE LINK 4 - FOR USE WITH TEXAS INSTRUMENTS CODE COMPOSER STUDIO Guide de l'utilisateur Page 302

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