Resolved! "bricked" STM32C011J6: SWCLK/SWDIO/nRST reconfigured to GPIO - how to recover?
Owing to a developer (me) firmware blunder, I successfully "bricked" several STM32C011J6 (SO8 package) devices so that I cannot access them using STM32CubeProgrammer and STLINK.My error was this - my firmware reconfigured pins 7 (SWDIO) and 8 (SWCLK)...