topic Re: About ISP of LPC1768 in LPC Microcontrollers

About ISP of LPC1768

lio0702 — Thu, 30 Aug 2018 11:19:10 GMT

Hello,

I'm working on a software, as Flash Magic, with LPC1768 through ISP commands. Unfortunately, it worked pretty well in the early stages until the 'G 0 T' command don't work. The 'G' command is as follows.

So, it was unlocked before runing the 'G 0 T',and return value was 0. but the code didn't work at 0x0000000 of flash. Curiously, it worked well after reset the microcontroller by manual operation.

Any helps/suggestions will be a great help to me.

Looking forward to your early reply.

Thanks.

Yu Lio

Re: About ISP of LPC1768

jeremyzhou — Fri, 31 Aug 2018 02:03:59 GMT

Hi Yu lio,
Thank you for your interest in NXP Semiconductor products and for the opportunity to serve you.
According to the statement, I think you miss call the ISP Unlock command prior to calling the Go command. So please give a try.
Have a great day,
TIC

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Re: About ISP of LPC1768

castor_xu — Wed, 13 Feb 2019 01:01:08 GMT

when use Go, you should bear in mind that it is still in ISP mode, not in the user code mode.

the main difference is the system clock,see your image below.