Hi Henry, They have moved the setup, but I will go there tomorrow with a scope and make sure nRST goes low correctly. I have been erasing/programming this unit many times, also just before I tried the new firmware with the locking enabled. The nRST should be wired correctly but there could always be something. I can still program PCBs that has not been locked (it is in a fixture). It looks like this with a unlocked unit: C:\Users>"C:\Program Files\SEGGER\JLink_V798i\JLink.exe" -JlinkScriptFile "C:\CCM_Resources\Resources\Firmware\Scripts\Factory_reset.JLinkScript" SEGGER J-Link Commander V7.98i (Compiled Sep 18 2024 15:51:27) DLL version V7.98i, compiled Sep 18 2024 15:50:31 Connecting to J-Link via USB...O.K. Firmware: J-Link V12 compiled Aug 22 2024 13:27:55 Hardware version: V12.00 J-Link uptime (since boot): 0d 00h 48m 22s S/N: 822006762 License(s): GDB USB speed mode: High speed (480 MBit/s) VTref=3.294V Type "connect" to establish a target connection, '?' for help J-Link>connect Please specify device / core. : MSPM0L1305 Type '?' for selection dialog Device> Please specify target interface: J) JTAG (Default) S) SWD T) cJTAG TIF>s Specify target interface speed [kHz]. : 4000 kHz Speed> Device "MSPM0L1305" selected. Connecting to target via SWD InitTarget() start Beginning sequence Command successfully sent InitTarget() end - Took 207ms Found SW-DP with ID 0x6BA02477 DPIDR: 0x6BA02477 CoreSight SoC-400 or earlier Scanning AP map to find all available APs AP[0]: Stopped AP scan as end of AP map seems to be reached Iterating through AP map to find AHB-AP to use Attach to CPU failed. Executing connect under reset. DPIDR: 0x6BA02477 CoreSight SoC-400 or earlier Scanning AP map to find all available APs AP[0]: Stopped AP scan as end of AP map has been reached Iterating through AP map to find AHB-AP to use Could not find core in Coresight setup InitTarget() start Beginning sequence Command successfully sent InitTarget() end - Took 202ms Found SW-DP with ID 0x6BA02477 DPIDR: 0x6BA02477 CoreSight SoC-400 or earlier Scanning AP map to find all available APs AP[5]: Stopped AP scan as end of AP map has been reached AP[0]: AHB-AP (IDR: 0x84770001, ADDR: 0x00000000) AP[1]: MEM-AP (IDR: 0x002E0001, ADDR: 0x01000000) AP[2]: JTAG-AP (IDR: 0x002E0000, ADDR: 0x02000000) AP[3]: MEM-AP (IDR: 0x002E0003, ADDR: 0x03000000) AP[4]: MEM-AP (IDR: 0x002E0002, ADDR: 0x04000000) Iterating through AP map to find AHB-AP to use AP[0]: Core found AP[0]: AHB-AP ROM base: 0xF0000000 CPUID register: 0x410CC601. Implementer code: 0x41 (ARM) Found Cortex-M0 r0p1, Little endian. FPUnit: 4 code (BP) slots and 0 literal slots CoreSight components: ROMTbl[0] @ F0000000 [0][0]: E00FF000 CID B105100D PID 000BB4C0 ROM Table ROMTbl[1] @ E00FF000 [1][0]: E000E000 CID B105E00D PID 000BB008 SCS [1][1]: E0001000 CID B105E00D PID 000BB00A DWT [1][2]: E0002000 CID B105E00D PID 000BB00B FPB Memory zones: Zone: "Default" Description: Default access mode Cortex-M0 identified. J-Link> Best regards Mohammad
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