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Hi All, I am using MCB2300 board(LPC2368). If RTX can handle interrupts from 4 UARTs,2 CAN Ports and 1 USB port(4 endpoints) simultaneously?
I tried RTX interrupt handle ablity like this: keeps sending characters from UART0(115200bps)to a PC, UART1 keeps sending characters to UART3, and UART3 sends back what it receives.CAN1 keeps sending data to CAN2 , and USB receives data from PC and sends button value to PC(USB works exactly same as RTL_HID USB example code, control 8 LEDs from PC and send button status to PC). I found if I do not run HID_Client software on PC side, my code works fine.when I run HID_Client my code works less than 1 minute and then stop at: PAbt_handle B PAbt_handle in LPC2300.s Anybody knows what's wrong? it is nested interrupt problem?
Thanks
Jack
Do you allow nested interrupts?
Do you have any critical data structure that is used by multiple threads or by threads and interrupts or by multiple interrupts (if nested interrupts are allowed)?
Have you verified the percentage of the processor that is needed to service all your interrupts?
It may also have something to do with this thread: http://www.keil.com/forum/docs/thread13634.asp
Hi Per Westermark, Thanks for your reply. 1.I am using RTX, that means nested interrupt enabled already, right? 2.No critical data structure is used. 3.I did not verify the percentage of the processor.Actually I do not know how to do this verification, could you explain to me?
Thanks Jack
Are you sure that nested interrupts are enabled?
The main task for an RTOS is to switch to a new thread after an interrupt signals an event
Hi Per Westermark, How to set nested interrupts are enabled by using RTX? could you please give me an example? I am so confused.
Jack; When you use RTX, it handles the interrupt nesting. Just be sure that you have all interrupt vectors defined in your start-up and as someone else pointed out, make sure that you have sufficient stack spaces defined before starting RTX. Bradford