tinyusb.git/hw/bsp/samd5x_e5x/boards/same54_xplained/ozone, branch codex/class-reference-docs Unnamed repository; edit this file 'description' to name the repository. http://cgit.235523.xyz/tinyusb.git/atom/hw/bsp/samd5x_e5x/boards/same54_xplained/ozone?h=codex%2Fclass-reference-docs 2026-07-24T08:56:14Z samd5x_e5x: ETM trace support for same54_xplained 2026-07-24T08:56:14Z hathach thach@tinyusb.org 2026-07-24T08:28:53Z urn:sha1:853f7e8f70caf4df9786001e84eca048d2664de7 The populated 20-pin Cortex Debug+ETM header carries 4-bit trace (TRACECLK=PC27, D0-3=PC28/PC26/PC25/PC24, mux H). TRACE_ETM builds mux the pins and enable GCLK channel 47 (GCLK_CM4_TRACE) from GCLK0 - without that gate the port stays silent with pins and TPIU armed. Chip-max 120 MHz core / 60 MHz TRACECLK validated (3x 280M-fetch captures).