• State Not Answered
  • Locked Locked
  • Replies 0 replies
  • Subscribers 21 subscribers
  • Views 1093 views
  • Users 0 members are here
2025 survey

We are running a survey to help us improve the experience for all of our members. If you see the survey appear, please take the time to tell us about your experience if you can.

Options
How was your experience today?
This discussion has been locked.
You can no longer post new replies to this discussion. If you have a question you can start a new discussion

a bug in RTX queue operation ,osMessagePut

lampo

Hi,all. After several weeks of debugging, it seems that there's a bug in RTX message queue operation.

osMessageQDef(MsgBox, 10, T_MEAS);      // Define message queue

result = osMessagePut(MsgBox, (uint32_t)mptr, 0);  // Send Message

normally,when the queue is full(10 messages), then 'result' is 0x81,which means resource not available.

But when the ISR calls 'osMessageGet' , which means the queue is not full at this time. Then 'osMessagePut' can put more than 10 messages now!

I tried to disable IRQ when calling these functions, but it didn't work. So, how to limit the number of messages in the queue?

0