Wireless MCUのトピックRe: KW47-LOC probe can not recognize by LinkFlash

KW47-LOC probe can not recognize by LinkFlash

liyun — Thu, 05 Mar 2026 07:03:38 GMT

I plugged my device and can download hex file into board by JLink tool.

I want to flash NBU for debug, but LinkFlash tool can not recognize probe(refreshed many times). How to resolve this? Thank you.

Re: KW47-LOC probe can not recognize by LinkFlash

Christine_Li — Thu, 05 Mar 2026 10:26:01 GMT

Hi, @liyun

Can you please help to follow below link to use blhost to flash NBU image?

https://community.nxp.com/t5/MCX-W71-Training-Secure-MCUs-for/FRDM-MXCW71-Hands-On-2-Recognize-NBU-Incompatible-Versions/ta-p/1970129

It is very easy and convenient to flash it.

If still not work for you, please let me know.

Best regards,

Christine.

Re: KW47-LOC probe can not recognize by LinkFlash

liyun — Fri, 06 Mar 2026 02:25:40 GMT

Hi, Christine

Thanks for your reply.

I have downloaded sb3 file into KW47-LOC board successfully.

But in PLATFORM_InitMulticore return kStatus_HAL_RpmsgTimeout because it want to start core1.

And I also find it maybe the keys in the fuses are null.

How to do it on KW47-LOC board?(I found a sample of KW45 https://community.nxp.com/t5/Wireless-MCU/KW45B41Z83AFPA-Custom-Board-Multicore-RPMsg-Initialization/m-p/2288776)

Thank you.

Re: KW47-LOC probe can not recognize by LinkFlash

liyun — Fri, 06 Mar 2026 09:06:09 GMT

I added image into core1 refer to example of kw47loc_hello_world_primary_core.

But kStatus_HAL_RpmsgTimeout still happened on debug, because no callback of RPMsgPeerReadyEventHandler, the event data not change.

call step:

APP_InitBle -> PLATFORM_InitBle -> PLATFORM_InitMulticore -> HAL_RpmsgMcmgrInit -> HAL_RpmsgMcmgrMasterInit
-> MCMGR_Init -> MCMGR_RegisterEvent -> MCMGR_StartCore, after time out ASSERT happen.

Could you help us? Thank you so much.

Re: KW47-LOC probe can not recognize by LinkFlash

liyun — Mon, 09 Mar 2026 05:24:51 GMT

Hi, Christine

After downloading kw47_nbu_ble_all_hosted.bin at address 0x48800000 by JLink tool, LOC board lighting blue LED, and debug BLE sample runs no assert happened(RPMsgPeerReadyEventHandler invoked).

Thank you very much.