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PNEV7426 Cannot halt processor

Question asked by Richard Boud on Feb 8, 2019
Latest reply on Feb 8, 2019 by Richard Boud

I have a PNEV7426 evaluation board. I had it running the example programs fine today using MCUxpresso and LPC Link. I am not sure what happened but the board stopped functioning as before with the error 'cannot halt processor'. I presume the processor needs to be reset, but I am not sure how to do this.


Thanks in advance.


MCUXpresso IDE RedlinkMulti Driver v10.3 (Nov 28 2018 02:33:57 - crt_emu_cm_redlink build 748)
Found part description in XML file PN74xxAU.xme
Reconnected to existing link server
Connecting to probe 1 core 0 (using server started externally) gave 'OK'
============= SCRIPT: PN7xxxxx_Connect.scp =============
DpID = 0BB11477
APID = 0x04770021
============= END SCRIPT ===============================
Probe Firmware: LPC-LINK2 CMSIS-DAP V5.173 (NXP Semiconductors)
Serial Number: I3F2AYOQ
VID:PID: 1FC9:0090
USB Path: \\?\hid#vid_1fc9&pid_0090&mi_00#7&b6994fa&0&0000#{4d1e55b2-f16f-11cf-88cb-001111000030}
Using memory from core 0 after searching for a good core
Cannot halt processor
Request debug reset of DAP
Cannot halt processor
Request debug reset of DAP
debug interface type = Cortex-M0 (DAP DP ID 0BB11477) over SWD TAP 0
processor type = Cortex-M0 (CPU ID 00000C20) on DAP AP 0
number of h/w breakpoints = 0
number of flash patches = 0
number of h/w watchpoints = 0
Probe(0): Connected&Reset. DpID: 0BB11477. CpuID: 00000C20. Info: <None>
Debug protocol: SWD. RTCK: Disabled. Vector catch: Disabled.
Content of CoreSight Debug ROM(s):
RBASE E00FF000: CID B105100D PID 04000BB471 ROM (type 0x1)
ROM 1 E000E000: CID B105E00D PID 04000BB008 Gen SCS (type 0x0)
ROM 1 E0001000: CID B105E00D PID 04000BB00A Gen DWT (type 0x0)
ROM 1 E0002000: CID B105E00D PID 04000BB00B Gen FPB (type 0x0)
Cannot halt processor
Failed on chip setup: Ep(04). Cannot halt processor.