diff options
Diffstat (limited to 'nuttx/configs/mirtoo/include/board.h')
| -rw-r--r-- | nuttx/configs/mirtoo/include/board.h | 14 |
1 files changed, 10 insertions, 4 deletions
diff --git a/nuttx/configs/mirtoo/include/board.h b/nuttx/configs/mirtoo/include/board.h index 98aa904a3..ffea646d1 100644 --- a/nuttx/configs/mirtoo/include/board.h +++ b/nuttx/configs/mirtoo/include/board.h @@ -52,16 +52,22 @@ /* Configuration ************************************************************/ /* Clocking *****************************************************************/ -/* Crystal frequencies */ +/* The Mirtoo does not use an external crystal but relies instead on the + * internal +/- 0.9% FRC clock. That clock has a nomninal frequency of 8MHz. + */ + +#define BOARD_FRC_FREQ 8000000 /* FRC nomimal frequency(8MHz) */ + +/* Oscillator modes */ -#define BOARD_POSC_FREQ 8000000 /* Primary OSC XTAL frequency (8MHz) */ -#define BOARD_SOSC_FREQ 32768 /* Secondary OSC XTAL frequency (32.768KHz) */ -#define BOARD_POSC_HSMODE 1 /* High-speed crystal (HS) mode */ +#define BOARD_FNOSC_FRCPLL 1 /* Use FRC w/PLL module */ +#define BOARD_POSC_DISABLED 1 /* Disable primary oscillator */ /* PLL configuration and resulting CPU clock. * CPU_CLOCK = ((POSC_FREQ / IDIV) * MULT) / ODIV */ +#define BOARD_PLL_INPUT BOARD_FRC_FREQ #define BOARD_PLL_IDIV 2 /* PLL input divider */ #define BOARD_PLL_MULT 20 /* PLL multiplier */ #define BOARD_PLL_ODIV 1 /* PLL output divider */ |