https://community.nxp.com/t5/S32K/how-to-debug-csec-function-use-jlink-gdbsever/m-p/2162612#M52348 <P>hi</P><P>&nbsp; we enable csec function and write key in CSEC_KEY_1，then debug the app use jlink gdbsever，so mcu is locked.</P><P>&nbsp; how to debug csec function use jlink gdbsever ,must be erase all csec key?</P> Wed, 03 Sep 2025 06:33:15 GMT top 2025-09-03T06:33:15Z https://community.nxp.com/t5/S32K/how-to-debug-csec-function-use-jlink-gdbsever/m-p/2162612#M52348 <P>hi</P><P>&nbsp; we enable csec function and write key in CSEC_KEY_1，then debug the app use jlink gdbsever，so mcu is locked.</P><P>&nbsp; how to debug csec function use jlink gdbsever ,must be erase all csec key?</P> Wed, 03 Sep 2025 06:33:15 GMT https://community.nxp.com/t5/S32K/how-to-debug-csec-function-use-jlink-gdbsever/m-p/2162612#M52348 top 2025-09-03T06:33:15Z https://community.nxp.com/t5/S32K/how-to-debug-csec-function-use-jlink-gdbsever/m-p/2162842#M52370 <P>Hi&nbsp;<a href="https://community.nxp.com/t5/user/viewprofilepage/user-id/253564">@top</a>&nbsp;</P> <P>I just answered similar question here:</P> <P><A href="https://community.nxp.com/t5/S32K/S32K142%E4%BD%BF%E7%94%A8CSEc%E5%8A%9F%E8%83%BD%E8%8A%AF%E7%89%87%E8%A2%AB%E9%94%81%E6%AD%BB/m-p/2162840/highlight/true#M52369" target="_blank">https://community.nxp.com/t5/S32K/S32K142%E4%BD%BF%E7%94%A8CSEc%E5%8A%9F%E8%83%BD%E8%8A%AF%E7%89%87%E8%A2%AB%E9%94%81%E6%AD%BB/m-p/2162840/highlight/true#M52369</A></P> <P>Yes, it's necessary to erase the keys (disable CSEc) by CMD_DBG_CHAL and CMD_DBG_AUTH commands with knowledge of MASTER_ECU_KEY. Or use different debug probe (like Pemicro)</P> <P>Regards,</P> <P>Lukas</P> Wed, 03 Sep 2025 10:56:16 GMT https://community.nxp.com/t5/S32K/how-to-debug-csec-function-use-jlink-gdbsever/m-p/2162842#M52370 lukaszadrapa 2025-09-03T10:56:16Z