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Problem with LPC51U68 by SWD ST-Link(v2) in IAR.

Question asked by Mozhaev Eugenii on Dec 12, 2019
Latest reply on Dec 16, 2019 by Sabina Bruce

In: I have problem with SWD ST-Link(v2) in IAR(7.30, 7.50, 8.20/8.30). Connected by 3 wire (GND, SWDIO, SWCLK). Production prototype board on LPC51U68. Flashed by USB in mass-storage mod (cool!).


Have: When try to debug or flash CPU write log "No reset"(or kind a) and "unable to read CPU-ID from Cortex CPU". Oscill show that on both SWD line presents activity. Same debugger work OK with STM32(and other) under IAR .


Q1: I need to modify my ST-Link to get right #RESET to reset board?

Q2: Anybody debug this CPU by ST-Link (and his clone) under IAR? What option I need to set for correct work?



(Sorry for ugly language...)