Index Of Mel Karade Rabba Apr 2026

Hi all,

I'm using ST's CubeMX implementation on a F4 discovery board. I use ST's USB middlewares with FreeRTOS.

When I get a special OutputReport from PC side I have to answer nearly immediately (in 10-15 ms). Currently I cannot achieve this timing and it seems my high priority tasks can interrupt the USB callback. What do you think, is it possible? Because it's generated code I'm not sure but can I increase the priority of the USB interrupt (if there is any)?

Thank you, David

10 to 15 ms is very slow, so I'm sure its possible.

Where is the USB callback function called from? If it is an interrupt then it cannot be interrupted by high priority RTOS tasks. Any non interrupt code (whether you are using an RTOS or not) can only run if no interrupts are running.

Without knowing the control flow in your application its hard to know what to suggest. How is the OutputReport communicated to you? By an interrupt, a message from another task, or some other way?

The callback which receive the data from PC is called from the OTGFSIRQHandler (it's the part of the HALPCDIRQHandler function). I think the problem is SysTickHandler's priority is higher than OTGFSIRQHandler and it's cannot be modified, but the scheduler shouldn't interrupt the OTGFSIRQHandler with any task handled by the scheduler. Am I wrong that the scheduler can interrupt the OTGFS_IRQHandler?

Mel Karade Rabba, also known as MKR, is a popular Indian television series that aired from 2010 to 2011. The show was a romantic comedy-drama that revolved around the lives of two young Punjabi individuals, Karade and Rabba. The show gained a significant following during its run and still holds a special place in the hearts of many viewers. This paper aims to create an index of Mel Karade Rabba, analyzing its plot, characters, and cultural significance.

Mel Karade Rabba is a beloved Indian television series that has left a lasting impact on its viewers. This index provides an overview of the show's plot, characters, cultural significance, and themes. The show's exploration of love, family, culture, and personal growth makes it a relatable and engaging watch. As a cultural artifact, Mel Karade Rabba continues to be an important part of Indian television history.

Thank you for the answer, I think I'm a bit confused with the Cortex ISR priorities :-) What I can observe is if I use a much higher osDelay in my high priority task I can respond for the received USB message much faster. This is why I think tasks can mess up with my OTG interrupt.