topic Re: programming problems lpc55s14 in LPC Microcontrollers

programming problems lpc55s14

Nadia — Fri, 18 Jun 2021 11:54:48 GMT

Hi all, I'm using the LPC55S14, and I can't program it, I get a message saying : Break at address "0xeffffffe" with no debug information available, or outside of program code.

If someone could tell me where the problem can come from.
Best regards

Re: programming problems lpc55s14

Nadia — Mon, 21 Jun 2021 06:50:45 GMT

When I try to program it, I get this message: Break at address "0xeffffffe".

Re: programming problems lpc55s14

Omar_Anguiano — Tue, 22 Jun 2021 20:00:47 GMT

Hello

Hope you are well. I suggest you try programing a demo project in a new workspace.
Additionally, could you tell me how are you handling the PIO_5?
The state of port pin PIO0_5 at Reset determines the boot source of the part or if the handler is invoked.

If you have more questions do not hesitate to ask me.
Best regards,
Omar

Re: programming problems lpc55s14

Nadia — Wed, 23 Jun 2021 07:06:29 GMT

@Omar_AnguianoPIO0_5 is in pull-up.

Should it be at 3.3 V?

Re: programming problems lpc55s14

Omar_Anguiano — Thu, 24 Jun 2021 20:01:56 GMT

Yes, it is suggested to pull up the pin to 3.3V to avoid the device from entering into ISP mode.
Please create a new workspace and import a demo project to verify if this issue still persists.

If you have more questions do not hesitate to ask me.
Best regards,
Omar

Re: programming problems lpc55s14

Nadia — Fri, 25 Jun 2021 06:38:27 GMT

@Omar_AnguianoThe problem persist. PIO0_5 is at 3.3V

Re: programming problems lpc55s14

frank_m — Fri, 25 Jun 2021 07:08:41 GMT

Applying analogies from other MCUs, perhaps getting it into ISP mode and doing a Flash mass erase could solve it.

Re: programming problems lpc55s14

Nadia — Fri, 25 Jun 2021 08:29:45 GMT

@frank_m But with the same debbugger?

Re: programming problems lpc55s14

frank_m — Fri, 25 Jun 2021 09:08:38 GMT

I think you will need special tools like Flash Magic, which implement the ISP protocol - and the medium supported by your MCU.

I did not have to use it with NXP controllers lately, but it's the same situation with other brands.

I think the NXP staff members here are more versed in such recovery / de-bricking problems ...

Re: programming problems lpc55s14

Nadia — Fri, 25 Jun 2021 09:38:44 GMT

@frank_m @Omar_Anguiano When I tried to load the programme, I got a file named: script.jlink, which contains:

ExitOnError 1
r
h
loadfile "C:\Users\Nadia\Documents\MCUXpressoIDE_11.3.1_5262\workspace\LPC55S14_Project\Debug\LPC55S14_Project.hex" 0x0
qc

Re: programming problems lpc55s14

Nadia — Fri, 25 Jun 2021 11:33:04 GMT

@frank_m @Omar_Anguiano

Why do I have to change lines of code to be able to access the interface to configure the peripherals and pins?

I mean, I create the project for the LPC55S14, and there are some lines where it says LPC55S16, and by changing them I can access the interface to configure the pins and clocks, otherwise I cannot.

Is this normal?