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Resolved: Problem flashing the LPC810

Added by doewie about 4 years ago

I’m following the getting started series with great interest, but now i’m stuck.

All is working as expected. I can upload the blinker code, reflash to the fader code, or upload a working code sending out data over the UART
However, after uploading this last code new uploads are not possible.

lps21isp reports a sync. error. It looks as if the LPC810 cannot enter bootmode if it’s serial output is active.

Appreciate if someone can give me a hint how to solve this issue.


Replies (2)

RE: Problem flashing the LPC810 - Added by jcw about 4 years ago

The trick is to first start the upload and then insert the programmer or the chip to supply power.
When the LPC810 starts re-using certain pins (such as reset), uploading requires a full power cycle with ISP pulled low.

RE: Problem flashing the LPC810 - Added by doewie about 4 years ago

Thxs! It works!

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