• State Accepted Answer
  • Locked Locked
  • Replies 1 reply
  • Subscribers 22 subscribers
  • Views 846 views
  • Users 0 members are here
2025 survey

We are running a survey to help us improve the experience for all of our members. If you see the survey appear, please take the time to tell us about your experience if you can.

Options
Related
How was your experience today?
This discussion has been locked.
You can no longer post new replies to this discussion. If you have a question you can start a new discussion

C51 C8051F580 compiler special software interrupt

Fausto Bartra

is there a special ID interrupt for a software interrupt in the compiler?

I am trying to pass information from one application to another by using an interrupt.

any information will be appreciated

Thank you 

Fausto Bartra

Parents
  • +1

    That's a big can or worms you're opening up, since only a very limited amount of the 8051 context is automatically stacked as a result of interrupts and there is no software interrupt that I am aware of.

    See also: RTX51 Tiny Real-Time Operating System which is included only with the PK51 Professional Developer's Kit. 

    In any event, you can fake an ISR in code by finding a hardware module you are not using and setting's its interrupt bit. I doubt this works for every hardware module, but the UART0 is one example that works (assuming you aren't using UART0):

    TI0 = 1;                         // Fake an ISR. (SWI)

Reply
  • +1

    That's a big can or worms you're opening up, since only a very limited amount of the 8051 context is automatically stacked as a result of interrupts and there is no software interrupt that I am aware of.

    See also: RTX51 Tiny Real-Time Operating System which is included only with the PK51 Professional Developer's Kit. 

    In any event, you can fake an ISR in code by finding a hardware module you are not using and setting's its interrupt bit. I doubt this works for every hardware module, but the UART0 is one example that works (assuming you aren't using UART0):

    TI0 = 1;                         // Fake an ISR. (SWI)

Children
No data