Cannot provide power to DAP bus?

[lpcware]

Content originally posted in LPCWare by micrio on Mon May 24 20:51:29 MST 2010
What does "02: Failed on Connect Em(04). Cannot provide power to DAP bus." mean?

I have a new layout of my board and I get this message when I hit "debug".

[lpcware]

Content originally posted in LPCWare by carlvanwormer on Sat Nov 06 18:48:47 MST 2010
We started having problems with 4 LPCXpresso boards along with our two target systems.  We found the solution at:
[COLOR=#1f497d][FONT=Calibri]http://support.code-red-tech.com/CodeRedWiki/DebugAccessChip [/FONT][/COLOR]
[COLOR=#1f497d][FONT=Calibri][/FONT][/COLOR]
[COLOR=#1f497d][FONT=Calibri]This reset process gets the target out of "stupid mode" and allows re-programming of the Flash.  [/FONT][/COLOR]
[COLOR=#1f497d][FONT=Calibri][/FONT][/COLOR]
[COLOR=#1f497d][FONT=Calibri]The target CPU got into "stupid mode" when we [COLOR=#1f497d][FONT=Calibri]edited the CMSIS file to set the #define SYSPLL_SETUP to “0” for RC oscillator operation.  [/FONT][/COLOR][/FONT][/COLOR]
[COLOR=#1f497d][FONT=Calibri][COLOR=#1f497d][FONT=Calibri][/FONT][/COLOR][/FONT][/COLOR]
[COLOR=#1f497d][FONT=Calibri][COLOR=#1f497d][FONT=Calibri]Another error we got after we performed this reset (before we reprogrammed the Flash) was:[/FONT][/COLOR][/FONT][/COLOR]
[COLOR=#1f497d][FONT=Calibri][COLOR=#1f497d][FONT=Calibri][FONT=Consolas][SIZE=3][COLOR=#000000]02: Failed on connect: Em(01). Cannot find selected MEM-AP (check target[/COLOR][/SIZE][/FONT]
[FONT=Calibri][COLOR=#000000]power):[/COLOR][/FONT]
[FONT=Calibri][COLOR=#000000][/COLOR][/FONT]
[FONT=Calibri][COLOR=#000000]Reprogramming the flash with good code (Blinky) made the system happy, again.[/COLOR][/FONT]
[FONT=Calibri][COLOR=#000000][/COLOR][/FONT]
[FONT=Calibri][COLOR=#000000]It would be nice if the IDE could recognize this problem and take care of it, or at least tell you how to reset the target . . .[/COLOR][/FONT]
[FONT=Calibri][COLOR=#000000][/COLOR][/FONT]
[FONT=Calibri][COLOR=#000000]Good Luck, [/COLOR][/FONT]
[FONT=Calibri][COLOR=#000000]Carl[/COLOR][/FONT]
[FONT=Calibri][COLOR=#000000][/COLOR][/FONT][/FONT][/COLOR][/FONT][/COLOR]

[lpcware]

Content originally posted in LPCWare by CodeRedSupport on Tue May 25 01:16:47 MST 2010
In real terms, you have a Debug Port (DP) related connection or power problem.

This error means a read of the DP CTRL/STATUS register has determined there is a problem with the DP clock or power domain(s). This is one (or more) of CDBGPWRUPREQ, CDBGPWRUPACK, CSYSPWRUPREQ, CSYSPWRUPACK, or ORUNDETECT.

You can refer to the ARM document "ARM® Debug Interface v5.1" (DSA09-PRDC-008772) for more information.

Regards,

CodeRedSupport