diff options
Diffstat (limited to 'nuttx/configs/teensy31/include/board.h')
| -rw-r--r-- | nuttx/configs/teensy31/include/board.h | 25 |
1 files changed, 5 insertions, 20 deletions
diff --git a/nuttx/configs/teensy31/include/board.h b/nuttx/configs/teensy31/include/board.h index cec8f8491..743babd01 100644 --- a/nuttx/configs/teensy31/include/board.h +++ b/nuttx/configs/teensy31/include/board.h @@ -51,23 +51,20 @@ ************************************************************************************/ /* Clocking *************************************************************************/ -/* The Kwikstik-K40 has a 4MHz crystal on board */ - -//#define BOARD_EXTCLOCK 1 /* External clock */ - #undef BOARD_EXTCLOCK -#define BOARD_EXTAL_FREQ 72000000 /* 50MHz Oscillator */ +#undef BOARD_EXTCLOCK /* No external clock */ +#define BOARD_EXTAL_FREQ 16000000 /* 16MHz Oscillator */ #define BOARD_XTAL32_FREQ 32768 /* 32KHz RTC Oscillator */ /* PLL Configuration. NOTE: Only even frequency crystals are supported that will * produce a 2MHz reference clock to the PLL. * - * PLL Input frequency: PLLIN = REFCLK/PRDIV = 4MHz/2 = 2MHz + * PLL Input frequency: PLLIN = REFCLK/PRDIV = 16MHz/8 = 2MHz * PLL Output frequency: PLLOUT = PLLIN*VDIV = 2Mhz*48 = 96MHz * MCG Frequency: PLLOUT = 96MHz */ -#define BOARD_PRDIV 25 /* PLL External Reference Divider */ -#define BOARD_VDIV 48 /* PLL VCO Divider (frequency multiplier) */ +#define BOARD_PRDIV 8 /* PLL External Reference Divider */ +#define BOARD_VDIV 48 /* PLL VCO Divider (frequency multiplier) */ #define BOARD_PLLIN_FREQ (BOARD_EXTAL_FREQ / BOARD_PRDIV) #define BOARD_PLLOUT_FREQ (BOARD_PLLIN_FREQ * BOARD_VDIV) @@ -85,18 +82,6 @@ #define BOARD_FLEXBUS_FREQ (BOARD_MCG_FREQ / BOARD_OUTDIV3) #define BOARD_FLASHCLK_FREQ (BOARD_MCG_FREQ / BOARD_OUTDIV4) -/* SIM CLKDIV1 dividers */ - -#define BOARD_OUTDIV1 1 /* Core = MCG, 96MHz */ -#define BOARD_OUTDIV2 2 /* Bus = MCG/2, 48MHz */ -#define BOARD_OUTDIV3 2 /* FlexBus = MCG/2, 48MHz */ -#define BOARD_OUTDIV4 4 /* Flash clock = MCG/4, 24MHz */ - -#define BOARD_CORECLK_FREQ (BOARD_MCG_FREQ / BOARD_OUTDIV1) -#define BOARD_BUS_FREQ (BOARD_MCG_FREQ / BOARD_OUTDIV2) -#define BOARD_FLEXBUS_FREQ (BOARD_MCG_FREQ / BOARD_OUTDIV3) -#define BOARD_FLASHCLK_FREQ (BOARD_MCG_FREQ / BOARD_OUTDIV4) - /* LED definitions ******************************************************************/ #define LED_STARTED 0 #define LED_HEAPALLOCATE 1 |