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| author | patacongo <patacongo@42af7a65-404d-4744-a932-0658087f49c3> | 2007-06-09 15:49:44 +0000 |
|---|---|---|
| committer | patacongo <patacongo@42af7a65-404d-4744-a932-0658087f49c3> | 2007-06-09 15:49:44 +0000 |
| commit | 05dd8c79b40af0221973ba0ee19ee0066c3a8dde (patch) | |
| tree | 6aa570fa88dbc3e31d4d6061276f3f72c21b3ff3 /nuttx/include/time.h | |
| parent | 747de88ae98ba1e232db4c61b01b114772236c02 (diff) | |
| download | px4-nuttx-05dd8c79b40af0221973ba0ee19ee0066c3a8dde.tar.gz px4-nuttx-05dd8c79b40af0221973ba0ee19ee0066c3a8dde.tar.bz2 px4-nuttx-05dd8c79b40af0221973ba0ee19ee0066c3a8dde.zip | |
Add support for custom system timer frequency
git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@274 42af7a65-404d-4744-a932-0658087f49c3
Diffstat (limited to 'nuttx/include/time.h')
| -rw-r--r-- | nuttx/include/time.h | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/nuttx/include/time.h b/nuttx/include/time.h index 7a9731423..92b849fbe 100644 --- a/nuttx/include/time.h +++ b/nuttx/include/time.h @@ -51,9 +51,16 @@ * Definitions ********************************************************************************/ -/* Clock tick of the system */ +/* Clock tick of the system (frequency Hz). The default value is 100Hz, but this + * default setting can be overridden by defining the clock interval in + * milliseconds as CONFIG_MSEC_PER_TICK in the board configuration file. + */ -#define CLK_TCK 100 +#ifdef CONFIG_MSEC_PER_TICK +# define CLK_TCK (1000/CONFIG_MSEC_PER_TICK) +#else +# define CLK_TCK (100) +#endif /* This is the only clock_id supported by the "Clock and Timer * Functions." |