Nokia E71 Games 320x240 [portable] Jun 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?

Brings the massive Game Boy Advance library to your phone. Turn the phone sideways or map the QWERTY keys to replicate the classic GBA layout. Picodrive:

Pocket Powerhouse: Revisiting the Best 320x240 Games for the Nokia E71 Go to product viewer dialog for this item. The

: Annual releases (like 2009 or 2010) featured dedicated landscape modes. Ferrari GT

: Running on Symbian OS v9.2, the E71 supports both lightweight Java (J2ME) apps and more powerful SIS files.

Because of its unique landscape screen, finding compatible games is key. Here are some of the best titles that run natively at resolution: Asphalt 4: Elite Racing

Beyond native games, the 320x240 screen is perfect for emulation. Because it is a 4:3 ratio, it matches old game consoles exactly.

: A tactical, squad-based combat game set in WWII. Originally for the N-Gage, it works well on the E-series' business-style layout. Ninja Strike

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.