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Hexiwear K64 Externel reference clock

Question asked by Amna Tehreem on Jun 16, 2017
Latest reply on Jun 18, 2017 by Hui_Ma


I am trying to select external oscillator (12MHz) as MCGOUTCLK but the status bit in MCG_S showing selection of external clock does not set.


I have enabled clock for PORTA, OSCSEL is 0 to select OSC0. RANGE is selected as 1 and CLKS as 2.

After that IREFST bit in MCG_S is not cleared and also CLKST bits remain to show internal clock selection.


I have consulted source code for hexiwear firmware and bootloader. I cannot find any other settings.

Any help would be appreciated.