mirror of
https://github.com/eclipse/upm.git
synced 2025-03-17 22:17:28 +03:00
fabf4287d6
MMC35240 is 3-axis magnetic sensor from MEMSIC. This sensor can measure magnetic fields within the full scale range of +-24 Gauss (G). The library provided is libupm-mmc35240.so The example provided is mmc35240-example-cxx where it will print x,y,z axis when trigger buffer data is ready. It's also print azimuth value. This sensor requires calibration. Please shake the sensor in figure 8 pattern, mmc35240-example will print the calibrated level. As the sensor data is noisy, we have implemented denoise algorithm within the sensor library. The azimuth formula is provided by Han, He <he.han@intel.com>. Signed-off-by: Lay, Kuan Loon <kuan.loon.lay@intel.com> Signed-off-by: Mihai Tudor Panu <mihai.tudor.panu@intel.com>
119 lines
3.3 KiB
C++
119 lines
3.3 KiB
C++
/*
|
|
* Copyright (C) 2011 The Android Open Source Project
|
|
*
|
|
* Licensed under the Apache License, Version 2.0 (the "License");
|
|
* you may not use this file except in compliance with the License.
|
|
* You may obtain a copy of the License at
|
|
*
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
|
*
|
|
* Unless required by applicable law or agreed to in writing, software
|
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
* See the License for the specific language governing permissions and
|
|
* limitations under the License.
|
|
*/
|
|
|
|
#ifndef ANDROID_TRAITS_H
|
|
#define ANDROID_TRAITS_H
|
|
|
|
// -----------------------------------------------------------------------
|
|
// Typelists
|
|
|
|
namespace android {
|
|
|
|
// end-of-list marker
|
|
class NullType {};
|
|
|
|
// type-list node
|
|
template <typename T, typename U>
|
|
struct TypeList {
|
|
typedef T Head;
|
|
typedef U Tail;
|
|
};
|
|
|
|
// helpers to build typelists
|
|
#define TYPELIST_1(T1) TypeList<T1, NullType>
|
|
#define TYPELIST_2(T1, T2) TypeList<T1, TYPELIST_1(T2)>
|
|
#define TYPELIST_3(T1, T2, T3) TypeList<T1, TYPELIST_2(T2, T3)>
|
|
#define TYPELIST_4(T1, T2, T3, T4) TypeList<T1, TYPELIST_3(T2, T3, T4)>
|
|
|
|
// typelists algorithms
|
|
namespace TL {
|
|
template <typename TList, typename T> struct IndexOf;
|
|
|
|
template <typename T>
|
|
struct IndexOf<NullType, T> {
|
|
enum { value = -1 };
|
|
};
|
|
|
|
template <typename T, typename Tail>
|
|
struct IndexOf<TypeList<T, Tail>, T> {
|
|
enum { value = 0 };
|
|
};
|
|
|
|
template <typename Head, typename Tail, typename T>
|
|
struct IndexOf<TypeList<Head, Tail>, T> {
|
|
private:
|
|
enum { temp = IndexOf<Tail, T>::value };
|
|
public:
|
|
enum { value = temp == -1 ? -1 : 1 + temp };
|
|
};
|
|
|
|
}; // namespace TL
|
|
|
|
// type selection based on a boolean
|
|
template <bool flag, typename T, typename U>
|
|
struct Select {
|
|
typedef T Result;
|
|
};
|
|
template <typename T, typename U>
|
|
struct Select<false, T, U> {
|
|
typedef U Result;
|
|
};
|
|
|
|
// -----------------------------------------------------------------------
|
|
// Type traits
|
|
|
|
template <typename T>
|
|
class TypeTraits {
|
|
typedef TYPELIST_4(
|
|
unsigned char, unsigned short,
|
|
unsigned int, unsigned long int) UnsignedInts;
|
|
|
|
typedef TYPELIST_4(
|
|
signed char, signed short,
|
|
signed int, signed long int) SignedInts;
|
|
|
|
typedef TYPELIST_1(
|
|
bool) OtherInts;
|
|
|
|
typedef TYPELIST_3(
|
|
float, double, long double) Floats;
|
|
|
|
template<typename U> struct PointerTraits {
|
|
enum { result = false };
|
|
typedef NullType PointeeType;
|
|
};
|
|
template<typename U> struct PointerTraits<U*> {
|
|
enum { result = true };
|
|
typedef U PointeeType;
|
|
};
|
|
|
|
public:
|
|
enum { isStdUnsignedInt = TL::IndexOf<UnsignedInts, T>::value >= 0 };
|
|
enum { isStdSignedInt = TL::IndexOf<SignedInts, T>::value >= 0 };
|
|
enum { isStdIntegral = TL::IndexOf<OtherInts, T>::value >= 0 || isStdUnsignedInt || isStdSignedInt };
|
|
enum { isStdFloat = TL::IndexOf<Floats, T>::value >= 0 };
|
|
enum { isPointer = PointerTraits<T>::result };
|
|
enum { isStdArith = isStdIntegral || isStdFloat };
|
|
|
|
// best parameter type for given type
|
|
typedef typename Select<isStdArith || isPointer, T, const T&>::Result ParameterType;
|
|
};
|
|
|
|
// -----------------------------------------------------------------------
|
|
}; // namespace android
|
|
|
|
#endif /* ANDROID_TRAITS_H */
|