On 30/08/2012 13:26, jblackarty wrote: >> Hi, >> >> do you mean this situation? >> >> Thread A = tcpip thread - stack protected by MPU, only A and >> privileged mode can access it >> Thread B = user thread - stack protected by MPU, only B and privileged >> mode can access it >> [...] > > Yes. > >> The privileged kernel does not use the task stack for its own >> variables/return >> addresses/etc. > > Richard, I'm going to surprise you. It does!
Of course - you are right when you make API function calls. In my mind I was just thinking about the tick interrupt and context switch interrupt - which uses the system stack. Regards, Richard. + http://www.FreeRTOS.org Designed for microcontrollers. More than 7000 downloads per month. + http://www.FreeRTOS.org/trace 15 interconnected trace views. An indispensable productivity tool. _______________________________________________ lwip-users mailing list [email protected] https://lists.nongnu.org/mailman/listinfo/lwip-users
