• A question about context switching
    Hello, There is an issue related to context switches that I do not understand. I have written the most simple interrupt handler: void foo() interrupt 0x20 using f_regs { } The generated assembly...
  • context switch
    I am programming a simple full pre-emptive RTOS. It needs context switch. For saving contexts, is it enough to save all registers and CPSR? if tasks have local variables, and the complier uses memories...
  • Saving the context of a STR9
    Hello all, I am trying to save the context of my STR9 but I am running into some trouble here: first of all, RealView does not allow for inline assembly that accesses registers directly, only embedded...
  • context switch stops
    I have a simple test project running under RTX. One task is using I2C bus. Whenever for testing purposes I'm unplugging one of the I2C wires RTX doesn't want to switch context even running through os_tsk_pass...
  • Context Switch- RL-ARM
    Hello, i am starting to work with RL-ARM for CortexM3, and i have checking the manual. I miss more info about the context switch in CortexM3 using the RL-ARM. Another operating systems use the PendSVHandler...