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| author | Gwendal Grignou <gwendal@chromium.org> | 2015-08-07 22:45:21 -0700 |
|---|---|---|
| committer | ChromeOS Commit Bot <chromeos-commit-bot@chromium.org> | 2015-08-24 19:08:15 +0000 |
| commit | de42bb285fa45a777ed7a27be9f4c99c8f606ed8 (patch) | |
| tree | afaecf0636aaab1932243b5f5bd9e198cc08e73f /include/timer.h | |
| parent | 5faadc6748d556375c1effd56dac226f2a773ad1 (diff) | |
| download | chrome-ec-de42bb285fa45a777ed7a27be9f4c99c8f606ed8.tar.gz | |
motion_sense: calculate threshold properly
Working on light sensor, sensor were read on every time,
SENSOR_EC_THRES was not taken into account.
Fix 64/32 conversions and add a function for dealing with rollover.
TEST=Set light sensor probe at 1s. Set accel sensor at 100Hz to fill
fifo often; verify that light sensor is queried every second only.
BRANCH=smaug
BUG=chrome-os-partner:39900
Change-Id: If1df53c1a9a304c992f8e517f5d516210118a437
Signed-off-by: Gwendal Grignou <gwendal@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/291992
Reviewed-by: Sheng-liang Song <ssl@chromium.org>
Diffstat (limited to 'include/timer.h')
| -rw-r--r-- | include/timer.h | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/include/timer.h b/include/timer.h index 2c439e959e..5f92207252 100644 --- a/include/timer.h +++ b/include/timer.h @@ -155,4 +155,14 @@ static inline unsigned time_since32(timestamp_t start) */ clock_t clock(void); +/** + * To compare time and deal with rollover + * + * Return true if a is after b. + */ +static inline int time_after(uint32_t a, uint32_t b) +{ + return (int32_t)(b - a) < 0; +} + #endif /* __CROS_EC_TIMER_H */ |