topic Re: Problem on running AN11782 LPC82x UART secondary bootloader in LPC Microcontrollers

Problem on running AN11782 LPC82x UART secondary bootloader

whtsang — Tue, 28 May 2019 06:09:36 GMT

I am following the application "AN11782 LPC82x UART secondary bootloader" to build the secondary bootloader to LPC824.

If you compile the bootloader example and debug using lpcxpresso, its working well.

Even i terminate, power off and on the device, it can still working.

However, the chip is not working if i load the hex file to the chip using flash magic.

Please see if anyone has met this case before and give advise

Regards

Nicky

Re: Problem on running AN11782 LPC82x UART secondary bootloader

Alice_Yang — Tue, 28 May 2019 09:36:27 GMT

Hello nicky tsang,

About "the chip is not working", could you please describe the problem in detail?

Alice

Re: Problem on running AN11782 LPC82x UART secondary bootloader

whtsang — Tue, 28 May 2019 10:53:52 GMT

There is App1 and App2 on the flash 0x2000 and 0x5000. If loading the code from the IDE, its able to execute the app based on the boot address at 0x1F40. Even I terminate the IDE and power up again, the bootloader can still execute the app.

However, I load the hex to the chip, I never be able to execute the app.

Regards

Nicky

Re: Problem on running AN11782 LPC82x UART secondary bootloader

Alice_Yang — Thu, 30 May 2019 08:58:53 GMT

Hi Nicky,

When use Flash Magic download, please check whether erased some code by mistake ?

For example, first download App1, when download Bootloader , erased the App1.

Please debug as Attach only to compare the memory , with the memory data when using IDE :

Have a great day,
TIC

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Re: Problem on running AN11782 LPC82x UART secondary bootloader

converse — Thu, 30 May 2019 09:07:45 GMT

Have you added the checksum? This is done automatically by the debugger, but not necessarily when creating a hex image. See

https://community.nxp.com/thread/388993