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driver/sensor: gets the capacity of the hardware fifo

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to hold the number of events

Change-Id: I58a9ad07913c7b189e1fd229ab22e91e220e01f6
Signed-off-by: Jiuzhu Dong <dongjiuzhu1@xiaomi.com>
This commit is contained in:
Jiuzhu Dong 2021-02-08 17:17:08 +08:00 committed by Alan Carvalho de Assis
parent 46ea549630
commit 936ce77d21
2 changed files with 8 additions and 1 deletions
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2
drivers/sensors/sensor.c
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@ -419,7 +419,7 @@ static int sensor_ioctl(FAR struct file *filep, int cmd, unsigned long arg)
case SNIOC_GET_NEVENTBUF: case SNIOC_GET_NEVENTBUF:
{ {
*val = lower->buffer_number; *val = lower->buffer_number + lower->batch_number;
} }
break; break;

7
include/nuttx/sensors/sensor.h
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@ -584,6 +584,13 @@ struct sensor_lowerhalf_s
uint32_t buffer_number; uint32_t buffer_number;
/* The number of events that hardware fifo hold maximum number of samples,
* must be aligned with size of struct sensor_event_xxx.
* If sensor don't hardware fifo, you don't need to care about fifo_size.
*/
uint32_t batch_number;
/* The uncalibrated use to describe whether the sensor event is /* The uncalibrated use to describe whether the sensor event is
* uncalibrated. True is uncalibrated data, false is calibrated data, * uncalibrated. True is uncalibrated data, false is calibrated data,
* default false. * default false.