LPC Microcontrollers中的主题 Re: Can't progrm or debug anymore SWD

Can't progrm or debug anymore SWD

xirxe — Tue, 15 Aug 2017 06:33:48 GMT

I have a board with SWD connecction, which works fine until I add a single line to the source

Chip_Clock_SetSystemPLLSource(SYSCTL_PLLCLKSRC_SYSOSC);

Now I'm not able to attach the GDB-Server ("CPU not connected") nor with my stand alone programming tool (J-Flash).

I tried it with different reset strategies and I can verify different signals on the reset line, but still the same, it's not possible to connect to the board.

Also, it's not a problem of a single board, I tried the same with two more boards with the same result.

Re: Can't progrm or debug anymore SWD

vojtechhavlicek — Tue, 15 Aug 2017 13:34:09 GMT

Try to get into the ISP programming mode via pin 12 It should work (I think).

Re: Can't progrm or debug anymore SWD

soledad — Tue, 15 Aug 2017 16:07:57 GMT

Hi,

Please check the below link:

ISP Reset over debug

Have a great day,
Sol

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