lpcware

LPC824 Max board xtal oscillator not working

Discussion created by lpcware Employee on Jun 15, 2016
Latest reply on Jun 18, 2016 by lpcware
Content originally posted in LPCWare by ECamino on Wed May 04 13:10:18 MST 2016
Hi,

I removed 0-ohm resistors and solder-jumped SJ3 1&2 and SJ4 1&2. 

I have continuity on Y2 to pins 17 and 18.

Using LPCOpen project for LPC824 "periph_wwdt"

In file sysinit_8xx.c, line 68, comment "Chip_SetupIrcClocking();" and add line "Chip_SetupXtalClocking();" 

Build, run debug (using LPCLink on an LPCxpresso 800 board) and I can see it hangs at sysinit_8xx.c, line 78: "while (!Chip_Clock_IsSystemPLLLocked()){}"

I checked the Y2 signal with a scope, and there is no crystal signal from either Y2 pad.

What do I have to do to enable the crystal clock on an LPC824 Max board?

Thanks,

EC

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