Freedom Board ---  Warning about on-board Crystal / PLL

Document created by Eli Hughes on Mar 18, 2013
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WARNING

 

 

If you stumble across the "getting started page" FREEDOM BOARD / CORTEX M0+ GETTING STARTED  Please take note:

 

While working with a large number of Freedom boards in a course,  it was observed that the Init Clock Routines would *sometimes* not work.    *Some* of the crystals on the freedom boards do NOT like "HIGH_GAIN" mode.  

 

change the line

 

  pll_init(8000000, HIGH_GAIN, CRYSTAL, 4, 24, MCGOUT);

 

to

  pll_init(8000000, LOW_POWER, CRYSTAL, 4, 24, MCGOUT);

 

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