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| author | patacongo <patacongo@42af7a65-404d-4744-a932-0658087f49c3> | 2007-06-09 15:49:44 +0000 |
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| committer | patacongo <patacongo@42af7a65-404d-4744-a932-0658087f49c3> | 2007-06-09 15:49:44 +0000 |
| commit | 05dd8c79b40af0221973ba0ee19ee0066c3a8dde (patch) | |
| tree | 6aa570fa88dbc3e31d4d6061276f3f72c21b3ff3 /nuttx/Documentation/NuttxPortingGuide.html | |
| 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/Documentation/NuttxPortingGuide.html')
| -rw-r--r-- | nuttx/Documentation/NuttxPortingGuide.html | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/nuttx/Documentation/NuttxPortingGuide.html b/nuttx/Documentation/NuttxPortingGuide.html index 8cd9d06e3..38ab0c31e 100644 --- a/nuttx/Documentation/NuttxPortingGuide.html +++ b/nuttx/Documentation/NuttxPortingGuide.html @@ -1164,6 +1164,12 @@ The system can be re-made subsequently by just typing <code>make</code>. handle and enables the API mm_addregion(start, end); </li> <li> + <code>CONFIG_TICKS_PER_MSEC</code>: The default system timer is 100Hz + or <code>TICKS_PER_MSEC</code>=10. This setting may be defined to inform NuttX + that the processor hardware is providing system timer interrupts at some interrupt + interval other than 10 msec. + </li> + <li> <code>CONFIG_RR_INTERVAL</code>: The round robin timeslice will be set this number of milliseconds; Round robin scheduling can be disabled by setting this value to zero. |