msgcount - Number of messages in read-enabled channel queue

Note   Support for msgcount on C5000 processors will be removed in a future version.

Syntax

IDEs

This function supports the following IDEs:

• Texas Instruments Code Composer Studio v3

Description

msgcount(rx,'channel') returns the number of unread messages in the read-enabled queue specified 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 write data to the processor, then use 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(IDE_Obj.rtdx,'ichannel', int32(indata));
   

3. Use msgcount to determine the number of messages available in the queue.

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

See Also

read | readmat | readmsg

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