I wanted to switch my Tiva C series MCU (a Stellaris target) from JTAG to SWD, but OpenOCD doesn't seem to support doing this directly. It does support resetting the flash of the MCU which involves switching from JTAG to SWD and back, so it wasn't too hard to make something work.
I have a few questions about the best way to implement it. 1) I added commands to switch to JTAG and to switch to SWD to the `dap_instance_commands` `command_registration` in `arm_adi_v5.c`. It seems that all ARM ADI V5 MCUs support switching transports with these commands, so it seemed like the right place to put them. Is this the correct place or should they go somewhere else? 2) After switching, OpenOCD can no longer communicate with the MCU and starts spitting out errors because it is trying to use the wrong transport. Should these commands shut down OpenOCD or do nothing and let the user stop OpenOCD? The user would then have to restart OpenOCD with the correct transport. Even better, is there some way to change the transport without restarting OpenOCD? Thanks, Bryn Hakl
