MQX Message Queue Number

murugan_m — Wed, 23 Apr 2014 07:16:06 GMT

Hi all,

In the Reference Manual of MQX, I saw that the Queue number is needed for opening a new queue and queue number ranges from a minimum value of 8 to maximum value as defined by MQX initialization structure . I am using K20 processor, my default MQX initialization structure have a maximum number of queues(BSP_DEFAULT_MAX_MSGQS) as 16 so that the user can have only have 9 queues(queue number 8 to queue number 16)?? Can we modify the maximum number of queues in MQX initialization structure??

please explain in detail.

Re: MQX Message Queue Number

danielchen — Thu, 08 May 2014 11:57:40 GMT

By default, BSP_DEFAULT_MAX_MSGQS is 16, so users can open message queue from 8 to 16.

Users can modify the BSP_DEFAULT_MAX_MSGQS in user_config.h, the maximum number is 255. Please note, message queue will consume system memory.

There is a demo code in mqx directory, for your reference.

C:\Freescale\Freescale_MQX_4_1\mqx\examples\msg

Have a great day,
Daniel

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Re: MQX Message Queue Number