/**************************************************************************** * examples/fxos8700cq/fxos8700cq_main.c * fxos8700cq motion sensor sample application * * Licensed to the Apache Software Foundation (ASF) under one or more * contributor license agreements. See the NOTICE file distributed with * this work for additional information regarding copyright ownership. The * ASF licenses this file to you 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. * ****************************************************************************/ /**************************************************************************** * Included Files ****************************************************************************/ #include #include #include #include /**************************************************************************** * Pre-processor Definitions ****************************************************************************/ #ifndef ACC_DEVPATH #define ACC_DEVPATH "/dev/accel0" #endif /**************************************************************************** * Public Functions ****************************************************************************/ /**************************************************************************** * fxos8700cq_main ****************************************************************************/ int main(int argc, FAR char *argv[]) { int fd; fxos8700cq_data data; fd = open(ACC_DEVPATH, O_RDONLY); if (fd < 0) { printf("Device %s open failure. %d\n", ACC_DEVPATH, fd); return -1; } while (true) { int ret; ret = read(fd, &data, sizeof(fxos8700cq_data)); if (ret != sizeof(fxos8700cq_data)) { fprintf(stderr, "Read failed : %d/%d@%d\n", ret, sizeof(fxos8700cq_data), fd); break; } printf("{\"accel\":[%d, %d, %d],\"magn\":[%d, %d, %d]}\n", data.accel.x, data.accel.y, data.accel.z, data.magn.x, data.magn.y, data.magn.z ); fflush(stdout); usleep(1000 * 1000 / 5); } close(fd); return 0; }