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I have a similar issue when I use LPC1102.
I use Flash Magic command line interface to run " EXECUTE(0x0,THUMB)". I expected the ISP mode will quit and the application code will start to run form 0x0 address. But what I saw is the ISP mode did quit but my code never run correctly unless I power cycle it.
Any idea?

Thanks.
Dragon

Andy,

Thanks.
It is a code issue. The ISP revoke code works solid.
http://www.nxp.com/documents/application_note/AN11015.pdf

LPC1102 is very tiny and nice MCU.

Dragon

Hi Andy,

I do need your help.

I use Flash magic program the unit with LPC1102 MCU.
If the LPC1102 is empty, I am able to program it using Flashmagic without issue.
If the LPC1102 was programmed and I want to erase/reprogram it using Flashmagic, but failed to autobaud.

Here is what I did.
1. In my FW, very early stage inside the main routine, I revoke the ISP by detecting one GPIO pin at low level.
This code is exactly for the apps note from NXP.
2. Hardware I am using FDTI USB to RS232 baord and just use TXD, RXD and VCC/GND.
3. I want read security signature in Flashmagic, it always says"failed to autobaud....".
4. When I use terminal, only right after reset, when I enter "?", I can get "synchronized" from the output screen. Any other time, no matter what I type, nothing show up in the output screen.
5. Is the auto baud feature enabled by default in LPC1102? Do my FW need enable this feature before revoke ISP mode?
6. I browsed all the related-info on the website by you and other persons and still cannot figure it out.

Can you help out?
Thanks a lot!