Kinetis Microcontrollers中的主题 Re: Locked kinetis

Locked kinetis

FlyChou — Thu, 29 Oct 2020 09:44:40 GMT

Is there anybody debug Kinetis with J-LINK?

I got a problem.J-Link Commander print as below:

SEGGER J-Link Commander V4.40a ('?' for help)Compiled Dec 16 2011 20:52:58DLL version V4.40a, compiled Dec 16 2011 20:52:42Firmware: J-Link ARM V8 compiled Dec  6 2011 18:57:44Hardware: V8.00S/N: 20100214Feature(s): RDI,FlashDL,FlashBP,JFlash,GDBFullVTarget = 3.287VInfo: TotalIRLen = 4, IRPrint = 0x01Info: ARM AP[0]: 0x24770011, AHB-APInfo: ARM AP[1]: 0x001C0000, JTAG-AP****** Error: No APB-AP found.No devices found on JTAG chain. Trying to find device on SWD.Info: Found SWD-DP with ID 0x2BA01477Info:   FPUnit: 0 code (BP) slots and 0 literal slotsNo device found on SWD.Did not find any core.Info: TotalIRLen = 4, IRPrint = 0x01Info: ARM AP[0]: 0x24770011, AHB-APInfo: ARM AP[1]: 0x001C0000, JTAG-AP****** Error: No APB-AP found.No devices found on JTAG chain. Trying to find device on SWD.Info: Found SWD-DP with ID 0x2BA01477Info:   FPUnit: 0 code (BP) slots and 0 literal slotsNo device found on SWD.Did not find any core.

I have tried the command "unlock kinetis", but does not work.

J-Link>unlock kinetisFound SWD-DP with ID 0x2BA01477Unlocking device...Timeout while unlocking device.J-Link>unlock kinetisFound SWD-DP with ID 0x2BA01477Unlocking device...Timeout while unlocking device.

I am wondering if my board is OK. Any suggestion for Me?

Re: Locked kinetis

FlyChou — Sat, 24 Dec 2011 13:30:54 GMT

Is there anybody can help me ?

Or just give me some suggestion ... Thx

Re: Locked kinetis

zm92011 — Thu, 08 Mar 2012 12:43:20 GMT

Did you find a solution？

Re: Locked kinetis

rhyttr — Fri, 09 Mar 2012 18:15:24 GMT

When use SWD interface, cause there is no reset signal to JLINK

Solution:

Open jlink. Exe command tool, when hint as follows, must pull low CPU reset pin

Pull low reset pin, click "yes", will be prompted to find Cortex-the M4, Run command "unlock kinetis" then unlock successful!

Re: Locked kinetis

jame — Thu, 10 May 2012 08:05:49 GMT

i have the same problem,and i try "unlock kinetis","erase_all_pin.jlk",but it still can't be solved.why?