you mentioned using an RTOS. Stepping on Cortex-M works poorly with a common OS feature: Use of the WFI (or WFE) instruction stops the core so that you can't get at it using JTAG. (It saves power, but in a way that complicates debugging.)
My baby Cortex-M RTOS has a build/coonfig option for whether it uses WFI/WFE or not, otherwise it would have been impossible to debug/step or even just halt the software to see where it got to. _______________________________________________ Openocd-development mailing list Openocd-development@lists.berlios.de https://lists.berlios.de/mailman/listinfo/openocd-development
