MATLAB EMBEDDED IDE LINK 4 - FOR USE WITH TEXAS INSTRUMENTS CODE COMPOSER STUDIO Guia do Utilizador descarregar pdf (Página 276)

100

101

flush

flush(rx,channel) removesallpendingdatamessagesfromthe

RTDX channel queue speciﬁed by

channel in rx.Unlikethepreceding

syntax o ptions, you use this statem ent to r e mov e messages for both

read-conﬁgured a nd write-conﬁgured channels.

flush(rx,'all') removes all data messages from all RT DX channel

queues.

When you use

flush with a write-conﬁgured RTDX channel, Embedded

IDE Link CC sends all the messages in the write q ueue to the p rocessor.

For read-conﬁgured channels,

flush removes one or more messages

from the queue depending on the input argument

num you supply and

disposes of them.

Examples To demonstrate flush, this example writes data to the proc essor ove r

the input channel, then uses

flush to remove a m essage from the read

queue for the output channel:

cc = ticcs;

rx = cc.rtdx;

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

enable(rx,'ichan');

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

enable(rx,'ochan');

indata = 1:10;

writemsg(rx,'ichan',int16(indata));

flush(rx,'ochan',1);

Now ﬂ ush the remaining messages from the read channel:

flush(rx,'ochan','all');

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