LPC MicrocontrollersのトピックRe: usb secondary bootloader for external flash memory

usb secondary bootloader for external flash memory

rajendran_varun — Thu, 25 Apr 2019 05:54:44 GMT

Hi,

I am working with LPC1769 microcontroller. With help of application note AN10866 as reference to create USB secondary bootloader. LPC1769 is working fine and able to see the LPC1769 internal flash memory as removable disk.

My query:

I had a external flash memory of 4MB, which is connected to LCP1769 through SPI. I need to make this external flash memory as removable disk using the USB secondary bootloader. Could you please suggest any solution or example design to address the query.

Thanks,

Varun

Re: usb secondary bootloader for external flash memory

ZhangJennie — Mon, 29 Apr 2019 09:05:12 GMT

Hi Varun,

We can reuse most code of this demo and port the flash driver from internal flash to external flash, and change USB disk properties(size,name,etc) and external flash layout based on their external flash and requirement.

By the way, our SDKs for new chip also implement USB MSC examples with SD card. Also can refer to these demos.

Besides, we don't have other samples.

Have a great day,
Jun Zhang

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Re: usb secondary bootloader for external flash memory

rajendran_varun — Mon, 29 Apr 2019 09:25:16 GMT

Hi Jun Zhang,

Thanks for the support.

Could you please share the link for the above mentioned example to download the source code.

Thanks,

Varun

Re: usb secondary bootloader for external flash memory

ZhangJennie — Sun, 05 May 2019 09:33:19 GMT

Hi Varun,

For LPC1769, the recommend SDK is LPCOpen, I suggest you download LPCOpen v1.03 from this site.

LPCOpen v1.xx | NXP

the MassStorage demo code is included.

Have a great day,
Jun Zhang

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