1 /* 2 * Copyright (C) 2012 Invensense, Inc. 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #ifndef ANDROID_SENSOR_BASE_H 18 #define ANDROID_SENSOR_BASE_H 19 20 #include <stdint.h> 21 #include <errno.h> 22 #include <sys/cdefs.h> 23 #include <sys/types.h> 24 25 #if defined ANDROID_JELLYBEAN 26 //build for Jellybean 27 #define LOGV_IF ALOGV_IF 28 #define LOGE_IF ALOGE_IF 29 #define LOGI_IF ALOGI_IF 30 #define LOGI ALOGI 31 #define LOGE ALOGE 32 #define LOGV ALOGV 33 #define LOGW ALOGW 34 #else 35 //build for ICS or earlier version 36 #endif 37 38 /* Log enablers, each of these independent */ 39 40 #define PROCESS_VERBOSE (0) /* process log messages */ 41 #define EXTRA_VERBOSE (0) /* verbose log messages */ 42 #define SYSFS_VERBOSE (0) /* log sysfs interactions as cat/echo for repro 43 purpose on a shell */ 44 #define FUNC_ENTRY (0) /* log entry in all one-time functions */ 45 46 /* Note that enabling this logs may affect performance */ 47 #define HANDLER_ENTRY (0) /* log entry in all handler functions */ 48 #define ENG_VERBOSE (0) /* log some a lot more info about the internals */ 49 #define INPUT_DATA (0) /* log the data input from the events */ 50 #define HANDLER_DATA (0) /* log the data fetched from the handlers */ 51 52 #define FUNC_LOG \ 53 LOGV("%s", __PRETTY_FUNCTION__) 54 #define VFUNC_LOG \ 55 LOGV_IF(FUNC_ENTRY, "Entering function '%s'", __PRETTY_FUNCTION__) 56 #define VHANDLER_LOG \ 57 LOGV_IF(HANDLER_ENTRY, "Entering handler '%s'", __PRETTY_FUNCTION__) 58 #define CALL_MEMBER_FN(pobject, ptrToMember) ((pobject)->*(ptrToMember)) 59 60 #define MAX_SYSFS_NAME_LEN (100) 61 #define IIO_BUFFER_LENGTH (480) 62 63 /*****************************************************************************/ 64 65 struct sensors_event_t; 66 67 class SensorBase { 68 protected: 69 const char *dev_name; 70 const char *data_name; 71 char input_name[PATH_MAX]; 72 int dev_fd; 73 int data_fd; 74 75 int openInput(const char* inputName); 76 static int64_t getTimestamp(); 77 static int64_t timevalToNano(timeval const& t) { 78 return t.tv_sec * 1000000000LL + t.tv_usec * 1000; 79 } 80 81 int open_device(); 82 int close_device(); 83 84 public: 85 SensorBase(const char* dev_name, const char* data_name); 86 87 virtual ~SensorBase(); 88 89 virtual int readEvents(sensors_event_t* data, int count) = 0; 90 int readSample(long *data, int64_t *timestamp); 91 int readRawSample(float *data, int64_t *timestamp); 92 virtual bool hasPendingEvents() const; 93 virtual int getFd() const; 94 virtual int setDelay(int32_t handle, int64_t ns); 95 virtual int enable(int32_t handle, int enabled); 96 virtual int query(int what, int* value); 97 virtual int batch(int handle, int flags, int64_t period_ns, int64_t timeout); 98 }; 99 100 /*****************************************************************************/ 101 102 #endif // ANDROID_SENSOR_BASE_H 103
