LPC51U68 USB MSC Programmng

kk7xo — Thu, 08 Aug 2024 17:28:17 GMT

I am trying to program my LPC51U68 via USB MSC. I have followed the instructions here: https://community.nxp.com/t5/LPCXpresso-IDE-FAQs/Creating-an-LPC-valid-image-checksum-directly-in-the-image/m-p/469247 and I have verified that the first 8 words of the binary file sum to zero (ignoring carry out of the high order). I am able to delete the previous image and move the new binary image to the drive window, however when I reboot the new program does not run and the microcontroller appears to re-enter ISP mode.

I am able to program the same image (as a hex file) using FlashMagic and a serial port, so I know the program works.

I am using VS Code, GNU compiler tools.

I must be missing something here. Can you help me? What do you need to see?

Re: LPC51U68 USB MSC Programmng

ZhangJennie — Fri, 09 Aug 2024 12:01:44 GMT

Hi kk7xo ,

First I would suggest you referring this article if your checksum is calculated correctly.

https://community.nxp.com/t5/LPC-Microcontrollers-Knowledge/LPC8N04-LPC-Boot-ROM-checksum/ta-p/1126196

If checksum has no issue, then try to download a SDK demo code to the board, led blinky, can it run well? reset the board, can the code still run well?

Thanks,

Jun Zhang

topic Re: LPC51U68 USB MSC Programmng in LPC Microcontrollers

LPC51U68 USB MSC Programmng

Re: LPC51U68 USB MSC Programmng