LPC1765 secondary bootloader with USB MSD

Ronaa — Tue, 28 Jan 2025 20:15:42 GMT

We ported a secondary boot loader from LPCXpresso 8.2.2 to MCU expresso 24.9

The bootloader reads a bin file from a USB flash disk.

The USB stack is nxpUSBLib with FAT file system

The USB works fine and IAP ommands works fine, but not together.

After erasing the flash the USB flashvdri e stops responding and the firmware hungs.while trying reading from USB. flash drive.

Everything worked fine with LPCXpresso 8.2.2

Any idea what we are missing?

Thanks.

Re: LPC1765 secondary bootloader with USB MSD

Omar_Anguiano — Mon, 03 Feb 2025 22:46:10 GMT

I suggest you comparing the linker of both projects, it is possible that the USB side is beign executed from flash while it needs to be excuted on RAM so it do not interfeeres with the erase.

Best regards,
Omar

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LPC1765 secondary bootloader with USB MSD

Re: LPC1765 secondary bootloader with USB MSD