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/*
* STMicroelectronics Step Counter Sensor Class
*
* Copyright 2013-2015 STMicroelectronics Inc.
* Author: Denis Ciocca - <denis.ciocca@st.com>
*
* Licensed under the Apache License, Version 2.0 (the "License").
*/
#include <fcntl.h>
#include <assert.h>
#include <signal.h>
#include "StepCounter.h"
StepCounter::StepCounter(HWSensorBaseCommonData *data, const char *name,
int handle, unsigned int hw_fifo_len, int pipe_data_fd,
float power_consumption, bool wakeup) :
HWSensorBase(data, name, handle,
SENSOR_TYPE_STEP_COUNTER, hw_fifo_len, pipe_data_fd, power_consumption)
{
sensor_t_data.stringType = SENSOR_STRING_TYPE_STEP_COUNTER;
sensor_t_data.flags = SENSOR_FLAG_ON_CHANGE_MODE;
if (wakeup)
sensor_t_data.flags |= SENSOR_FLAG_WAKE_UP;
sensor_t_data.resolution = 1.0f;
sensor_t_data.maxRange = pow(2.0, (double)data->channels[0].bits_used) - 1;
num_data_axis = SENSOR_BASE_1AXIS;
}
StepCounter::~StepCounter()
{
}
int StepCounter::Enable(int handle, bool enable)
{
int err;
err = HWSensorBase::Enable(handle, enable);
if (err < 0)
return err;
if (!GetStatus())
last_data_timestamp = 0;
return 0;
}
int StepCounter::SetDelay(int handle, int64_t period_ns, int64_t timeout)
{
int err;
int64_t min_pollrate_ns;
err = SensorBase::SetDelay(handle, period_ns, timeout);
if (err < 0)
return err;
min_pollrate_ns = GetMinPeriod();
err = write_sysfs_int((char *)FILENAME_MAX_DELIVERY_RATE,
common_data.iio_sysfs_path, (int)NS_TO_MS(min_pollrate_ns));
if (err < 0) {
ALOGE("%s: Failed to write max rate delivery \"%s/%s\".",
common_data.device_name, common_data.iio_sysfs_path,
FILENAME_MAX_DELIVERY_RATE);
return err;
}
return 0;
}
void StepCounter::ProcessData(SensorBaseData *data)
{
#define STEP_COUNTER_DATA_MASK 0xFFFF
sensor_event.u64.step_counter = (uint64_t)data->raw[0] & STEP_COUNTER_DATA_MASK;
sensor_event.timestamp = data->timestamp;
HWSensorBase::WriteDataToPipe();
HWSensorBase::ProcessData(data);
}
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