topic FRDM-KL25Z : Flash error - Keil uVision5 in Kinetis Microcontrollers

FRDM-KL25Z : Flash error - Keil uVision5

Alexa18 — Wed, 08 Dec 2021 20:13:32 GMT

I'm a beginner. I'm trying to flash the example blink code to FRDM KL25Z board on Keil. But I'm getting this error "No debug unit device found" (Whereas I've plugged in my board to my laptop). Can anyone help me out with this ?

Re: FRDM-KL25Z : Flash error - Keil uVision5

Robin_Shen — Thu, 09 Dec 2021 01:05:50 GMT

Hi Alexa,

The onboard debugger is PEMicro OpenSDA, so please select it and try to debug again.

You can getting started with MCUXpresso Software and Tools, there are a lots of Keil MDK project examples in MCUXpresso SDK.

Best Regards,
Robin
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Re: FRDM-KL25Z : Flash error - Keil uVision5

Alexa18 — Thu, 09 Dec 2021 02:40:46 GMT

I'm getting this error with that.

Also when I plug it in to my laptop, it doesn't appear as a storage device. An LED on the board blinks right when I connect it to my PC and goes off

Re: FRDM-KL25Z : Flash error - Keil uVision5

Robin_Shen — Thu, 09 Dec 2021 02:50:58 GMT

PE34298 is a known issue with old project that select Freesacle as Vendor. Please click Select New Device and chose NXP.

Re: FRDM-KL25Z : Flash error - Keil uVision5

Alexa18 — Thu, 09 Dec 2021 03:27:15 GMT

It says Port undetected as shown above. I tried disconnecting and reconnecting and refreshing, but it is still not working. Can you please make me understand what is causing the problem?

Re: FRDM-KL25Z : Flash error - Keil uVision5

Robin_Shen — Thu, 09 Dec 2021 03:31:45 GMT

Please check whether the bootloader and firmware of OpenSDA is OK by refer: Recovering OpenSDA Boards with Windows 10

Re: FRDM-KL25Z : Flash error - Keil uVision5

Alexa18 — Thu, 09 Dec 2021 05:05:57 GMT

Hey, Thank you. My bootloader Version is 1.09. And I'm using Windows 10.

I followed instructions given in the link that you had suggested. But, I failed to update the bootloader.

The version is not changing. Also the LASTSTAT.txt file in bootloader drive used to have '"error" before. But now it says "programming..."

So yeah, I'm unable to update the bootloader. Any solutions to this?

Re: FRDM-KL25Z : Flash error - Keil uVision5

Robin_Shen — Thu, 09 Dec 2021 05:20:23 GMT

Please make sure this step: Disable/stop Windows Services. Some computers may enable automatically.

Re: FRDM-KL25Z : Flash error - Keil uVision5

Alexa18 — Thu, 09 Dec 2021 05:23:31 GMT

Yes it was disabled

Re: FRDM-KL25Z : Flash error - Keil uVision5

Robin_Shen — Thu, 09 Dec 2021 06:13:16 GMT

Have you tried to use other PC? If still not work, then you may have to update the bootloader by using Windows 7.