FRDM-KL26Z DOA

[Frotz]

Hi,

Got a FRDM-KL26Z from Digikey and it's dead on arrival. Connecting the device to power via USB reveals no activity. Documentation indicates that there's a demo onboard. No evidence of any such thing with this board. Connecting it to a Mac and running USB Prober reveals that there's no device connected to the Mac. No activity on the board when powered in any way. No MSD. No change when holding down reset.

Digikey was very kind to send a replacement. It's just as useless.

What's the deal?

Thanks,

Andre.

[jingpan]

Hi Frotz,

Yes, M20AGV is belong to MK20DX129VFM5.

[ErichStyger]

Hi @phatpaul ,

I said it was the MK20DN32M5 because that is how the USBDM programmer identified it (using chip ID). I guess it's possible they also put the wrong chip on these boards...

I have found my old KL26Z under a pile of board: Here is a picture of the K20 on it:

I would not trust what USBDM tells you. If you can, I recommend using a J-Link instead.

I hope this helps,

Erich

[Frotz]

Hi,

I've been trying all sorts of things to get this board to work (and its replacement) and have found the DAP to be "flakey." I was able to get the J-Link to halt the K20, erase the flash and re-program it using Segger's FRDM-KL26Z OpenSDA firmware—which locked the chip, but still the onboard DAP does not present itself as useable anywhere and the green LED does not work. I only got this far on one of the two boards, the other is not at all cooperative. And I was only able to get the one board to cooperate for a few minutes and since has been just as useless as the other.

It would seem that the KL26 on each board was not programmed b/c the onboard K20 DAP is unreliable at best.

Can someone at NXP comment on this and have a look at the picture below showing lot#, S/N etc let me know how I can get a FRDM-KL26Z that is in proper condition?

Thank you,

Andre.

[jingpan · Accepted solution]

Hi all,

I got a new board with a new K20 and try to replay all the problems you are facing. I know what happens when you trying to download bootloader and firmware now.

Download bootloader to K20 is easy. It can work immediately. Everybody can do it. But you will find that it is almost impossible to let the debug probe work, whatever firmware you use, it always mount as a MAINTANCE or DAPLINKBOOT. This is because the KL26 is empty too. If it is empty, it will hold its reset pin to 0.9V. The reset pin is also connect to SW2. It will also prevent openSDA into debug mode.

So, Please download a "hello world" demo to KL26 via J7. Then, openSDA will work fine.

Attachment is bootloader 244 and DAPLINK firmware 242.

Regards,

Jing

[christianfischer]

Hi Jing,

thanks for the update.

But there should be one thing kept in mind: The setting for windows 10 seems also to be neccessary. Because I also tried to download a user definied application to the board before which was running as stand alone application but nevertheless leaving Bootloader option was not possible.

It seems as if there are several traps you can step into. Hopefully other users can participate from the solutions knowledge thats written down here.

Regards,

Christian

[jingpan]

Hi,

Can you try openSDA2.2 bootloader now?

Regards,

Jing

[Frotz]

Hello Jing,

There's just no way to load that bootloader!

Could you or someone at NXP get a FRDM-KL26Z board from Digikey like I did with the same lot # etc. (as shown in my picture above) and see what's wrong with it? Id like to get at least one good board, but how?

Thank you very much,

Andre.

[Frotz]

Hello Jing,

Thank you very much for joining the conversation!!

I've got OpenSDAv2.2_DAPLink_frdmkl26z_rev0242 handy, but cannot get the K20 on either board to cooperate—they're just too flakey. They won't halt, can't erase, and of course can't load a file! I'm surprised that I got one of the boards to work for a couple of minutes, but even then it was only with the J-link—the DAP never worked on either board. Also, the USB port never presented a device of any sort on either board.

Best,

Andre.

[jingpan]

Hi,

I'm sorry for that. Just like Erich has explained, the chip is locked by openSDA v1 / P&E Micro v109. You have no chance to update it to DAPlink v2.2. There is problem with older versions of OpenSDA v109 PE bootloader with several OS. What you can do is update v109 to v111 or newer version.

Now you even can't have Mac to recognize the board. You must try on another windows computer, win7 is better, to update the bootloader and application. If the Mac still can't recognize the bootloader, there maybe some other problem on your computer. For example,

https://mcuoneclipse.com/2013/10/07/frdm-boards-not-responding-check-your-virus-scanner/

Regards,

Jing

[Frotz]

Hi Jing,

I've tried all that weeks ago. None of it applies and none of it works. The board, in my opinion, is unusable, unrepairable, and should not have left the factory.

Best,

Andre.

[ErichStyger]

Hi Andre,

the K20 can be programmed using the J12 header (see https://mcuoneclipse.files.wordpress.com/2013/12/frdm-kl26z-board-components.png?w=584&h=381 or https://mcuoneclipse.com/2013/12/29/review-new-frdm-kl26z-board/ .

It might be that your K20 is not programmed at all, so you could give it a try, because then the chip is just empty and you can program it.

You can load the same V2.x bootloader do the K20 as the one on the other FRDM boards, see https://mcuoneclipse.com/2016/06/26/how-to-recover-the-opensda-v2-x-bootloader/

Or you can load it with the patched bootloader I have on GitHub, see https://mcuoneclipse.com/2017/10/29/adding-a-delay-to-the-arm-daplink-bootloader/

I hope this helps,

Erich

[Frotz]

Hi Erich,

I had a look at those links yesterday and can't get anything to work.

As far as I can tell the Segger stuff requires a J-Link device, but I don't have one.

Creating a project using the K20DX128xxx5 isn't possible because that chip isn't available. I made a stub project using the MK20DX128xxx10 instead. I used the flash tool in MCUXpresso with the k20dx_frdmkl26z_if_crc.bin from OpenSDAv2.2_DAPLink_frdmkl26z_rev0242.zip downloaded from https://www.nxp.com/design/microcontrollers-developer-resources/ides-for-kinetis-mcus/opensda-serial... It seems to have flashed the K20 using the J12 header, but it doesn't seem to change anything. Mac sees no USB device, no MSD etc. I tried to re-flash it and got lots of errors. Both logs are below.

What can be done now?

Thank you very much,

Andre.

Executing flash operation 'Program' (Program file into flash: k20dx_frdmkl26z_if_crc.bin) - Mon Mar 22 12:00:08 EDT 2021

Checking MCU info...

Scanning for targets...

Executing flash action...

MCUXpresso IDE RedlinkMulti Driver v11.3 (Jan 11 2021 15:42:37 - crt_emu_cm_redlink build 9)

(  0) Reading remote configuration

Wc(03). No cache support.

Found chip XML file in /Users/high/Documents/MCUXpressoIDE_11.3.0/workspace/MK20D10_Project/MK20DX128xxx10.xml

(  5) Remote configuration complete

Reconnected to existing LinkServer process.

============= SCRIPT: kinetisconnect.scp =============

Kinetis Connect Script

Connecting to Probe Index = 1

This probe = 1

This TAP = 0

This core = 0

DpID = 2BA01477

Assert NRESET

Reset pin state: 00

Power up Debug

MDM-AP APID: 0x001C0000

MDM-AP System Reset/Hold Reset/Debug Request

MDM-AP Control: 0x0000001C

MDM-AP Status (Flash Ready) : 0x00000032

Part is not secured

MDM-AP Control: 0x00000014

Release NRESET

Reset pin state: 00

MDM-AP Control (Debug Request): 0x00000004

MDM-AP Status: 0x0001003A

MDM-AP Core Halted

============= END SCRIPT =============================

Probe Firmware: DAPLink CMSIS-DAP (ARM)

Serial Number:  040900009c13c22800000000000000000000000097969906

VID:PID:  0D28:0204

USB Path: USB_0d28_0204_fd132120_ff00

Using memory from core 0 after searching for a good core

( 30) Emulator Connected

( 40) Debug Halt

( 50) CPU ID

debug interface type      = CoreSight DP (DAP DP ID 2BA01477) over SWD TAP 0

processor type            = Cortex-M4 (CPU ID 00000C24) on DAP AP 0

number of h/w breakpoints = 6

number of flash patches   = 2

number of h/w watchpoints = 4

Probe(0): Connected&Reset. DpID: 2BA01477. CpuID: 00000C24. Info: <None>

Debug protocol: SWD. RTCK: Disabled. Vector catch: Disabled.

Content of CoreSight Debug ROM(s):

RBASE E00FF000: CID B105100D PID 04000BB4C4 ROM (type 0x1)

ROM 1 E000E000: CID B105E00D PID 04000BB000 Gen SCS (type 0x0)

ROM 1 E0001000: CID B105E00D PID 04003BB002 Gen DWT (type 0x0)

ROM 1 E0002000: CID B105E00D PID 04002BB003 Gen FPB (type 0x0)

ROM 1 E0000000: CID B105E00D PID 04003BB001 Gen ITM (type 0x0)

ROM 1 E0040000: CID B105900D PID 04000BB9A1 CSt TPIU type 0x11 Trace Sink - TPIU

NXP: MK20DX128xxx10

DAP stride is 4096 bytes (1024 words)

XML Error - no license-type XML file 'crt_common.xme' on path.

note - part information contained no product license-type data

Inspected v.2 On chip Kinetis Flash memory module FTFL_2K.cfx

Image 'Kinetis SemiGeneric Dec 17 2020 10:03:38'

Opening flash driver FTFL_2K.cfx

Sending VECTRESET to run flash driver

Flash variant 'K 24 FTFL Generic 2K' detected (128KB = 64*2K at 0x0)

Closing flash driver FTFL_2K.cfx

( 65) Chip Setup Complete

Connected: was_reset=true. was_stopped=true

( 70) License Check Complete

Loading 'k20dx_frdmkl26z_if_crc.bin' Binary 0x00000000 len 0x17C00

Opening flash driver FTFL_2K.cfx (already resident)

Sending VECTRESET to run flash driver

Flash variant 'K 24 FTFL Generic 2K' detected (128KB = 64*2K at 0x0)

Writing 97280 bytes to address 0x00000000 in Flash

1 of 1 (  0) Writing sectors 0-47 at 0x00000000 with 97280 bytes

(  0) at 00000000: 0 bytes - 0/97280

(  2) at 00000000: 2048 bytes - 2048/97280

(  4) at 00000800: 2048 bytes - 4096/97280

(  6) at 00001000: 2048 bytes - 6144/97280

(  at 00001800: 2048 bytes - 8192/97280

( 10) at 00002000: 2048 bytes - 10240/97280

( 12) at 00002800: 2048 bytes - 12288/97280

( 14) at 00003000: 2048 bytes - 14336/97280

( 16) at 00003800: 2048 bytes - 16384/97280

( 18) at 00004000: 2048 bytes - 18432/97280

( 21) at 00004800: 2048 bytes - 20480/97280

( 23) at 00005000: 2048 bytes - 22528/97280

( 25) at 00005800: 2048 bytes - 24576/97280

( 27) at 00006000: 2048 bytes - 26624/97280

( 29) at 00006800: 2048 bytes - 28672/97280

( 31) at 00007000: 2048 bytes - 30720/97280

( 33) at 00007800: 2048 bytes - 32768/97280

( 35) at 00008000: 2048 bytes - 34816/97280

( 37) at 00008800: 2048 bytes - 36864/97280

( 40) at 00009000: 2048 bytes - 38912/97280

( 42) at 00009800: 2048 bytes - 40960/97280

( 44) at 0000A000: 2048 bytes - 43008/97280

( 46) at 0000A800: 2048 bytes - 45056/97280

( 98) at 0000B000: 51200 bytes - 96256/97280

(100) at 00017800: 2048 bytes - 98304/97280

Sectors written: 23, unchanged: 25, total: 48

Erased/Wrote sector  0-47 with 97280 bytes in 3009msec

Closing flash driver FTFL_2K.cfx

(100) Finished writing Flash successfully.

Flash Write Done

Loaded 0x17C00 bytes in 3236ms (about 30kB/s)

Reset target (system)

Starting execution using system reset

state - running or following reset request - re-read of state failed - rc Nn(05). Wire ACK Fault in DAP access

error closing down debug session - Nn(05). Wire ACK Fault in DAP access

Executing flash operation 'Program' (Program file into flash: k20dx_frdmkl26z_if_crc.bin) - Mon Mar 22 12:04:03 EDT 2021

Checking MCU info...

Scanning for targets...

Executing flash action...

MCUXpresso IDE RedlinkMulti Driver v11.3 (Jan 11 2021 15:42:37 - crt_emu_cm_redlink build 9)

(  0) Reading remote configuration

Wc(03). No cache support.

Found chip XML file in /Users/high/Documents/MCUXpressoIDE_11.3.0/workspace/MK20D10_Project/MK20DX128xxx10.xml

(  5) Remote configuration complete

Reconnected to existing LinkServer process.

============= SCRIPT: kinetisconnect.scp =============

Kinetis Connect Script

Connecting to Probe Index = 1

This probe = 1

This TAP = 0

This core = 0

DpID = 2BA01477

Assert NRESET

Reset pin state: 00

Power up Debug

MDM-AP APID: 0x001C0000

MDM-AP System Reset/Hold Reset/Debug Request

MDM-AP Control: 0x0000001C

MDM-AP Status (Flash Ready) : 0x00000032

Part is not secured

MDM-AP Control: 0x00000014

Release NRESET

Reset pin state: 00

MDM-AP Control (Debug Request): 0x00000004

MDM-AP Status: 0x00000032

MDM-AP Core Halt Failed

MDM-AP Control (Debug Request): 0x00000004

MDM-AP Status: 0x00000032

MDM-AP Core Halt Failed

MDM-AP Control (Debug Request): 0x00000004

MDM-AP Status: 0x00000032

MDM-AP Core Halt Failed

============= END SCRIPT =============================

Probe Firmware: DAPLink CMSIS-DAP (ARM)

Serial Number:  040900009c13c22800000000000000000000000097969906

VID:PID:  0D28:0204

USB Path: USB_0d28_0204_fd132120_ff00

Using memory from core 0 after searching for a good core

On debug connection - reset using system reset

Warning - processor did not halt - gave up waiting

( 30) Emulator Connected

Cannot halt processor

Request debug reset of DAP

( 40) Debug Halt

( 50) CPU ID

debug interface type      = CoreSight DP (DAP DP ID 2BA01477) over SWD TAP 0

processor type            = Cortex-M4 (CPU ID 00000C24) on DAP AP 0

number of h/w breakpoints = 6

number of flash patches   = 0

number of h/w watchpoints = 0

Probe(0): Connected&Reset. DpID: 2BA01477. CpuID: 00000C24. Info: <None>

Debug protocol: SWD. RTCK: Disabled. Vector catch: Enabled.

Content of CoreSight Debug ROM(s):

RBASE E00FF000: CID B105100D PID 04000BB4C4 ROM (type 0x1)

ROM 1 E000E000: CID B105E00D PID 04000BB000 Gen SCS (type 0x0)

ROM 1 E0001000: CID B105E00D PID 04003BB002 Gen DWT (type 0x0)

ROM 1 E0002000: CID B105E00D PID 04002BB003 Gen FPB (type 0x0)

ROM 1 E0000000: CID B105E00D PID 04003BB001 Gen ITM (type 0x0)

ROM 1 E0040000: CID B105900D PID 04000BB9A1 CSt TPIU type 0x11 Trace Sink - TPIU

NXP: MK20DX128xxx10

DAP stride is 4096 bytes (1024 words)

XML Error - no license-type XML file 'crt_common.xme' on path.

note - part information contained no product license-type data

Inspected v.2 On chip Kinetis Flash memory module FTFL_2K.cfx

Image 'Kinetis SemiGeneric Dec 17 2020 10:03:38'

Opening flash driver FTFL_2K.cfx

Sending VECTRESET to run flash driver

Warning - processor did not halt - gave up waiting

target failed to halt after flash driver reset - (null)

flash start - disabling IRQs failed - rc Ep(08). Cannot access core regs when target running.

chip initialization failed - Ep(08). Cannot access core regs when target running.

failed to initialize flash driver FTFL_2K.cfx

( 65) Chip Setup Complete

(100) Target Connection Failed

Unable to perform operation!

Command failed with exit code 1

[ErichStyger]

imho you have to set the device to the K20DX128: the 100 MHz version is different.

Not sure what else you can do. But in any case I recommend that you get a J-Link (the EDU mini is just $20 and allows you to work with virtually any ARM Cortex on this planet, so can save you from other difficult situations too.

The other option really could be that you get access to a windows machine: It really could be that somehow your machine does not recognize the board. With a Window machine you can at least check if the OpenSDA on the board would be still present.

[Frotz]

Hello Erich,

I bought a Segger J-Link and tried it with the board and got nowhere useful. A log follows. Any ideas?

Thanks,

Andre.

- Connecting via USB to probe/ programmer device 0

- Probe/ Programmer firmware: J-Link EDU Mini V1 compiled Nov 12 2020 13:31:42

- Device "MK20DX128XXX5" selected.

- Target interface speed: 4000 kHz (Fixed)

- VTarget = 3.121V

- InitTarget()

- Timeout while halting CPU.

- Found SW-DP with ID 0x2BA01477

- DPIDR: 0x2BA01477

- Scanning AP map to find all available APs

- AP[2]: Stopped AP scan as end of AP map has been reached

- AP[0]: AHB-AP (IDR: 0x24770011)

- AP[1]: JTAG-AP (IDR: 0x001C0000)

- Iterating through AP map to find AHB-AP to use

- AP[0]: Core found

- AP[0]: AHB-AP ROM base: 0xE00FF000

- CPUID register: 0x410FC241. Implementer code: 0x41 (ARM)

- Found Cortex-M4 r0p1, Little endian.

- FPUnit: 6 code (BP) slots and 2 literal slots

- CoreSight components:

- ROMTbl[0] @ E00FF000

- ROMTbl[0][0]: E000E000, CID: B105E00D, PID: 000BB000 SCS

- ROMTbl[0][1]: E0001000, CID: B105E00D, PID: 003BB002 DWT

- ROMTbl[0][2]: E0002000, CID: B105E00D, PID: 002BB003 FPB

- ROMTbl[0][3]: E0000000, CID: B105E00D, PID: 003BB001 ITM

- ROMTbl[0][4]: E0040000, CID: B105900D, PID: 000BB9A1 TPIU

- Executing init sequence ...

- ERROR: Failed to connect.

Could not perform custom init sequence.

[Frotz]

Hi Erich & Mark,

Visiting a friend with a windows PC is impossible due to restrictions here & the personal safety of myself and my friends with PC's. I've been working on this for over a week now—most of the time spent quarantining stuff from DigiKey and it's REALLY frustrating and disappointing.

That file I downloaded "OpenSDAv2.2_DAPLink_frdmkl26z_rev0242", is it the latest version of the K20 OpenSDA program? If not, perhaps I could try again with something more current. 

Is there any way to get the right chip in MCUXpresso. I can d/l older versions from NXP...

Are you able to test a FRDM-KL26Z loaded with the same OpenSDA code on a Mac?

Is there some other way to get the .bin into the K20 w/o spending massive amounts of time on this?

Thank you very much,

Andre.

[Frotz]

Update:

The K20 can't be erased with MCUXpresso now so there's no point sending me anything. (Except a fully functional board, hint, hint NXP.) 

Any ideas about my questions in the post above from yesterday?

Thank you,

Andre.

[Frotz]

Here's the log when trying a mass erase:

Executing flash operation 'Erase' (Erase flash) - Tue Mar 23 11:46:59 EDT 2021

Checking MCU info...

Scanning for targets...

Executing flash action...

MCUXpresso IDE RedlinkMulti Driver v11.3 (Jan 11 2021 15:42:37 - crt_emu_cm_redlink build 9)

(  0) Reading remote configuration

Wc(03). No cache support.

Found chip XML file in /Users/high/Documents/MCUXpressoIDE_11.3.0/workspace/MK20D10_Project/MK20DX128xxx10.xml

(  5) Remote configuration complete

Reconnected to existing LinkServer process.

============= SCRIPT: kinetisconnect.scp =============

Kinetis Connect Script

Connecting to Probe Index = 1

This probe = 1

This TAP = 0

This core = 0

DpID = 2BA01477

Assert NRESET

Reset pin state: 00

Power up Debug

MDM-AP APID: 0x001C0000

MDM-AP System Reset/Hold Reset/Debug Request

MDM-AP Control: 0x0000001C

MDM-AP Status (Flash Ready) : 0x00000032

Part is not secured

MDM-AP Control: 0x00000014

Release NRESET

Reset pin state: 00

MDM-AP Control (Debug Request): 0x00000004

MDM-AP Status: 0x00000032

MDM-AP Core Halt Failed

MDM-AP Control (Debug Request): 0x00000004

MDM-AP Status: 0x00000032

MDM-AP Core Halt Failed

MDM-AP Control (Debug Request): 0x00000004

MDM-AP Status: 0x00000032

MDM-AP Core Halt Failed

============= END SCRIPT =============================

Probe Firmware: DAPLink CMSIS-DAP (ARM)

Serial Number:  040900009c13c22800000000000000000000000097969906

VID:PID:  0D28:0204

USB Path: USB_0d28_0204_fd132120_ff00

Using memory from core 0 after searching for a good core

( 30) Emulator Connected

Cannot halt processor

Request debug reset of DAP

( 40) Debug Halt

( 50) CPU ID

debug interface type      = CoreSight DP (DAP DP ID 2BA01477) over SWD TAP 0

processor type            = Cortex-M4 (CPU ID 00000C24) on DAP AP 0

number of h/w breakpoints = 6

number of flash patches   = 0

number of h/w watchpoints = 0

Probe(0): Connected&Reset. DpID: 2BA01477. CpuID: 00000C24. Info: <None>

Debug protocol: SWD. RTCK: Disabled. Vector catch: Disabled.

Content of CoreSight Debug ROM(s):

RBASE E00FF000: CID B105100D PID 04000BB4C4 ROM (type 0x1)

ROM 1 E000E000: CID B105E00D PID 04000BB000 Gen SCS (type 0x0)

ROM 1 E0001000: CID B105E00D PID 04003BB002 Gen DWT (type 0x0)

ROM 1 E0002000: CID B105E00D PID 04002BB003 Gen FPB (type 0x0)

ROM 1 E0000000: CID B105E00D PID 04003BB001 Gen ITM (type 0x0)

ROM 1 E0040000: CID B105900D PID 04000BB9A1 CSt TPIU type 0x11 Trace Sink - TPIU

NXP: MK20DX128xxx10

DAP stride is 4096 bytes (1024 words)

XML Error - no license-type XML file 'crt_common.xme' on path.

note - part information contained no product license-type data

Inspected v.2 On chip Kinetis Flash memory module FTFL_2K.cfx

Image 'Kinetis SemiGeneric Dec 17 2020 10:03:38'

Opening flash driver FTFL_2K.cfx

Sending VECTRESET to run flash driver

Warning - processor did not halt - gave up waiting

target failed to halt after flash driver reset - (null)

flash start - disabling IRQs failed - rc Ep(08). Cannot access core regs when target running.

chip initialization failed - Ep(08). Cannot access core regs when target running.

failed to initialize flash driver FTFL_2K.cfx

( 65) Chip Setup Complete

(100) Target Connection Failed

Unable to perform operation!

Command failed with exit code 1

[mjbcswitzerland]

Hi

I have two FRDM-KL26Zs in my draw. One died on me so doesn't do anything (no LEDs but 5V arrives on the USB)
The other works (still) and this is the information I get from the OpenSDA version installed on it:

Board Name is: FRDM-KL26Z
MicroBoot Kernel Version is: 1.05
Bootloader Version is: 1.09
Installed Application: PEMicro FRDM-KL26Z Mass Storage/Debug App
Application Version is: 1.18
DUID is: E9F33938-8F7881E0-3762E817-B779E678
EUID is: F171A239-1DD2876E-18620A0C-958268D6
TUID is: 74823938-47328207-3755980C-B990E678
TOA is: 86B6E505-FA9781CB-1D79DB3C-C6787CF0
TOA2 is: 86B6E505-871683E8-8B5E2BB1-6ABE6B74
SUID is: 86B6E505-6D47969C-37239804-8003EC65

Is has what looks like a boot loader and then an application (the OpenSDA used by the actual board, which can normally be exchanged when the USB is connected with the reset button held down, to starts its boot loader). Doing this is what will cause the the main problem if done on MAC or post Win 8.1 but once the OpenSDA application can been installed (using Win 7 for example) it is OK (as long as the reset is not held when powering again).

I thought that if I just uploaded an image from the K20 and sent it to you you could just load it and have all but it looks like this is not possible because they have (permanently) secured the chip (presumably to protect the boot loader code) and so it is not possible to connect or read out the content (possibly a mass erase would work but it would then lose the program before it could be copied out).
If you can in fact connect to the K20 it means that it was never programmed.
If you can connect to the KL26 on the other JTAG/SWD connector you don't need the OpenSDA and can just use that instead (you just lose the OpenSDA's VCOM for the UART).

Can you connect and then use your available programmer/debugger to start working with your board (without the onboard debugger)?

Regards

Mark

(using WIn 7

[ErichStyger]

Hi Mark,

I thought that if I just uploaded an image from the K20 and sent it to you you could just load it and have all but it looks like this is not possible because they have (permanently) secured the chip (presumably to protect the boot loader code) and so it is not possible to connect or read out the content (possibly a mass erase would work but it would then lose the program before it could be copied out).

The OpenSDA V1.x (which is on that FRDM-KL26Z) has read-out protection enabled and mass erase disabled, so you won't be able to read-out the chip or erase it to regain access. This is different for OpenSDA V2.x as there the bootloader is open.

Erich

[mjbcswitzerland]

Erich

In fact the debugger states that it was permanently protected and mass erase disabled but asked "would I like to try anyway".
In any case there is a not a lot to do because not even erasing and installing OpenSDA V2 is possible (without replacing the K20).

Regards

Mark

Off-topic: is it correct that your TinyK22 can be provided by PCBway and that you receive royalties? Private message me maybe.

[mjbcswitzerland]

Hi Erich

>>..really could be that you get access to a windows machine

To a MAC user this may be like you asking them to make a pact with the devil. And don't mention William Gates since to a MAC users that IS the devil...

Regards

Mark