I am working with OMAP3530 Gumstix, modified so that I can use a JTag XDS debugger.
Using the basic Frame Work which is given with the DSPLink Example Applications (Message Queue) I've created my own DSPLink Application which I am able to start on the DSP Core. Following suit, I used PROC_setup (setup the PROC subsystem in DSP Link) PROC_attach (attach to my DSP Core) PROC_load (Load the DSP Application) and PROC_start (set up the entry address and begin execution.) I can start a Jtag session with the DSP Core, and I can single step execute from Code Composer Studio.
My question: Why must the user space application on the GPP be left running in order for the DSP application to continue to work? If I suspend/resume my GPP application, the DSP continues to execute. But if I interrupt (ctrl-c) the GPP Application, the debugger session attached to the DSP Core crashes. Why? How does killing the user-space application on the GPP effect the execution of the BIOS DSP task?
After turning on the DSP Link traces, I see the tear down which the DSPLink does when the ARM-side application is killed.
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