diff options
| author | Gregory Nutt <gnutt@nuttx.org> | 2015-02-28 11:54:47 -0600 |
|---|---|---|
| committer | Gregory Nutt <gnutt@nuttx.org> | 2015-02-28 11:54:47 -0600 |
| commit | 3e7f22d582c74d4109c4069ff104f2c5e901d4ca (patch) | |
| tree | a297c18fc0be553222dcbe8ee14aab572f3e737c /nuttx/configs/pic32mz-starterkit | |
| parent | 5f990259ede6fc8497557513351d3de7b9c4d6a4 (diff) | |
| download | px4-nuttx-3e7f22d582c74d4109c4069ff104f2c5e901d4ca.tar.gz px4-nuttx-3e7f22d582c74d4109c4069ff104f2c5e901d4ca.tar.bz2 px4-nuttx-3e7f22d582c74d4109c4069ff104f2c5e901d4ca.zip | |
PIC32MZ: Fix some configuration settings and POSC mode should be external clock
Diffstat (limited to 'nuttx/configs/pic32mz-starterkit')
| -rw-r--r-- | nuttx/configs/pic32mz-starterkit/include/board.h | 23 |
1 files changed, 18 insertions, 5 deletions
diff --git a/nuttx/configs/pic32mz-starterkit/include/board.h b/nuttx/configs/pic32mz-starterkit/include/board.h index b5567ed7f..d6a53f3b0 100644 --- a/nuttx/configs/pic32mz-starterkit/include/board.h +++ b/nuttx/configs/pic32mz-starterkit/include/board.h @@ -52,15 +52,28 @@ /* Configuration ************************************************************/ /* Clocking *****************************************************************/ -/* Crystal frequencies */ +/* Crystal frequencies + * + * - A 24 MHz oscillator circuit (Y4) is connected to the on-board + * microcontroller. This oscillator circuit functions as the controller’s + * primary oscillator. Depending on which is populated on the starter kit + * board, a 24 MHz crystal (Y1) may be used instead of Y4. + * - The starter kit also has provisions for an external secondary 32 kHz + * oscillator (Y2); however, this is not populated. + */ -#define BOARD_POSC_FREQ 24000000 /* Primary OSC XTAL frequency (24MHz) */ -#define BOARD_SOSC_FREQ 32768 /* Secondary OSC XTAL frequency (32.768KHz) */ +#define BOARD_POSC_FREQ 24000000 /* Primary OSC XTAL frequency (Y4, 24MHz) */ +#define BOARD_SOSC_FREQ 32000 /* Secondary OSC XTAL frequency (Y2, 32KHz) */ -/* Oscillator modes */ +/* Oscillator modes. + * + * - BOARD_POSC_ECMODE: An external oscillator is connected to OSC1/OSC2 + * - BOARD_POSC_HSMODE: An external crystal or resonator is connected to + * OSC1/OSC2 + */ #define BOARD_FNOSC_SPLL 1 /* Use system PLL */ -#define BOARD_POSC_HSMODE 1 /* High-speed crystal (HS) mode */ +#define BOARD_POSC_ECMODE 1 /* External clock (EC) mode */ #define BOARD_POSC_SWITCH 1 /* Enable clock switching */ #undef BOARD_POSC_FSCM /* Disable clock monitoring */ |