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| author | patacongo <patacongo@42af7a65-404d-4744-a932-0658087f49c3> | 2011-07-07 18:40:15 +0000 |
|---|---|---|
| committer | patacongo <patacongo@42af7a65-404d-4744-a932-0658087f49c3> | 2011-07-07 18:40:15 +0000 |
| commit | b4ee6ba758d5582b6b6eb69c4cf4beaa955c5cf1 (patch) | |
| tree | 9a3d520118b0193ad6eedb211b4dfd2051173c18 /nuttx/include | |
| parent | 21de300584601f990c440757197097746fa40034 (diff) | |
| download | px4-nuttx-b4ee6ba758d5582b6b6eb69c4cf4beaa955c5cf1.tar.gz px4-nuttx-b4ee6ba758d5582b6b6eb69c4cf4beaa955c5cf1.tar.bz2 px4-nuttx-b4ee6ba758d5582b6b6eb69c4cf4beaa955c5cf1.zip | |
Verified STM3210E-EVAL button handling and new button test application
git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@3751 42af7a65-404d-4744-a932-0658087f49c3
Diffstat (limited to 'nuttx/include')
| -rw-r--r-- | nuttx/include/nuttx/arch.h | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/nuttx/include/nuttx/arch.h b/nuttx/include/nuttx/arch.h index 5bc3980aa..3a4dedfa3 100644 --- a/nuttx/include/nuttx/arch.h +++ b/nuttx/include/nuttx/arch.h @@ -560,8 +560,10 @@ EXTERN void up_buttoninit(void); * Description: * After up_buttoninit() has been called, up_buttons() may be called to * collect the state of all buttons. up_buttons() returns an 8-bit bit set - * with each bit associated with a button. The meaning of the each button - * bit is board-specific. + * with each bit associated with a button. A bit set to "1" means that the + * button is depressed; a bit set to "0" means that the button is released. + * The correspondence of the each button bit and physical buttons is board- + * specific. * * NOTE: This interface may or may not be supported by board-specific * logic. If the board supports button interfaces, then CONFIG_ARCH_BUTTONS |