NRF54L15 Zephyr Blinky Sample did not start at Power on

[Gerd Breidenstein]

Hi

The Blinky Programm only starts when I give the reset Go command via jlink commander.

At Power cycle nothing happens.

If i give the SOC an external Pin reset the running programm stops but never starts

[Gerd Breidenstein]

I used jlink commander for flashing

J-Link>erase
No address range specified, 'Erase Chip' will be executed
'erase': Performing implicit reset & halt of MCU.
Reset type: NORMAL (wiki.segger.com/J-Link_Reset_Strategies)
Reset: ARMv8M core with Security Extension enabled detected. Switch to secure domain.
Reset: Halt core after reset via DEMCR.VC_CORERESET.
Reset: Reset device via AIRCR.SYSRESETREQ.
Erasing device...
J-Link: Flash download: Total time needed: 0.231s (Prepare: 0.080s, Compare: 0.000s, Erase: 0.085s, Program: 0.000s, Verify: 0.000s, Restore: 0.065s)
Erasing done.
J-Link>loadbin zephyr.hex 0x0 reset
'loadbin': Performing implicit reset & halt of MCU.
Reset type: NORMAL (wiki.segger.com/J-Link_Reset_Strategies)
Reset: ARMv8M core with Security Extension enabled detected. Switch to secure domain.
Reset: Halt core after reset via DEMCR.VC_CORERESET.
Reset: Reset device via AIRCR.SYSRESETREQ.
Downloading file [zephyr.hex]...
J-Link: Flash download: Bank 0 @ 0x00000000: Skipped. Contents already match

[Gerd Breidenstein]

I also checked west flash option. Same behaviour

[MagnusPersson]

Hello Sir,

Which version of the nRF Connect SDK are you using?

Best Regards,

Magnus

[Gerd Breidenstein]

Hi Magnus
I used pure Zephyr

[MagnusPersson]

Hi,

OK, this I have no experience of. I have used nRF Connect SDK 2.7 and found that this worked for me.

Best Regards,

-Magnus