Kinetis MicrocontrollersのトピックRe: Bootloader for MK22FN512VLL12 and LPC54608J512BD208

Bootloader for MK22FN512VLL12 and LPC54608J512BD208

prasannanaik — Mon, 01 Jul 2019 05:07:17 GMT

Hi,

I am using MK22FN512VLL12 and LPC54608J512BD208 in two different projects. I want to understand the bootloading process in both of these microcontrollers. I want to use Uart/USART port for bootloading.

If possible please share reference code as well.

Thanks and best regards,

Prasanna

Re: Bootloader for MK22FN512VLL12 and LPC54608J512BD208

kerryzhou — Wed, 03 Jul 2019 01:53:17 GMT

Hi Prasanna Naik ,

MK22FN512VLL12 can download the according SDK, and in the middleware, select the KBOOT, then you will find the flash bootloader code.

More details about the KBOOT, you can refer to the document in this link:

MCU Bootloader | NXP

About the LPC LPC54608J512BD208 , actually, this chip already have the on chip ISP function for UART, you can refer to the chip user manual:

https://www.nxp.com/webapp/Download?colCode=UM10912

Chapter 5: LPC546xx ISP and IAP

Wish it helps you!

Kerry

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Re: Bootloader for MK22FN512VLL12 and LPC54608J512BD208

prasannanaik — Tue, 20 Aug 2019 09:44:22 GMT

Hi kerryzhou‌,

Thanks for your feedback.

I have gone through both the links sent by you but i have a different problem.

In my product, i do not have access to isp lines/ reset line after product has been shipped but i do have access to one of the uart port. I have used a uart to usb converter in my application so i can access uart port of both the controllers (MK22FN512VLL12 and LPC54608J512BD208 microcontroller are used in different products). Is there any way to program both the controllers through uart port only?

Thanks and best regards,

Prasanna

Re: Bootloader for MK22FN512VLL12 and LPC54608J512BD208

kerryzhou — Wed, 21 Aug 2019 01:22:40 GMT

Hi Prasanna Naik,

As I know, both MK22FN512VLL12 and LPC54608J512BD208 support the uart program, MK22FN512VLL12 need to download the flash bootloader at first.

Wish it helps you!

If you still have questions about it, please kindly let me know.

Kerry

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