User`s guide

msgcount

Purpose Number of m essages in read-enabled channel queue

Note Support for msgcount on C5000 and C6000 processors will be

removed in a future version.

Syntax msgcount(rx,'channel')

Description msgcount(rx,'channel') returns the number of unread messages in

the read-enabled queue speci ﬁed by

channel for the RTDX interface rx.

You cannot use

msgcount on channels conﬁgured for write access.

Examples If you have created and loaded a program to the processor, you can

writedatatotheprocessor,thenuse

msgcount to determine the number

of messages in the read queue.

1 Create and load a program to the processor.

2 Write data to the processor from MATLAB software.

indata=1:100;

writemsg(cc.rtdx,'ichannel', int32(indata));

3 Use msgcount to determine the number o f messages available in

the queue.

num_of_msgs = msgcount(cc.rtdx,'ichannel')