Hi,

J-Trace for Cortex-M can also be used as a J-Link and it also supports ARM7/9 cores. Tracing on ARM7/9 targets is not supported.

we are currently reworking the complete manual, it is outdated in this regard.
Old versions of the J-Trace Cortex-M (which only supported tracing on Cortex-M3/M4) supported debugging of ARM7/9.

As stated in the model overview, on the model page and in the shop, current versions of the J-Trace Cortex-M (PRO) officially do not support ARM7/9/11 and Cortex-A/R at all.

How about other J-Tag capable devices? Can I connect to them too in J-Link mode? My particular interest is with ESP32 that I plan to utilize excessively in my projects along with ARM cores.

Supported cores and devices are listed here: segger.com/jlink_supported_devices.html (Applies for J-Link, J-Trace Cortex-M (PRO) only supports Cortex-M0/M0+/M1/M3/M4/M7 (PRO: Cortex-M0/M0+/M1/M3/M4/M7/M23/M33)).

At least the core needs to be supported in order to use any high-level functions with J-Link (like reading memory).

However, if the device's core is not listed as supported but is JTAG compliant, you can still use J-Link to communicate with the target device via "raw" JTAG transmissions.

This could either be done with
A) J-Link Commander + command files or manual input or
B) Your custom application and the J-Link SDK (Part No 8.08.06 on the price list)


Best regards,
Niklas