/**************************************************************************** * apps/examples/lsm303_reader/lsm303_reader_main.c * * 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 #include #include #include #include /**************************************************************************** * Public Functions ****************************************************************************/ /**************************************************************************** * lsm303_reader_main ****************************************************************************/ int main(int argc, FAR char *argv[]) { FILE *sensor; struct lsm303agr_sensor_data_s sensor_data; int ret; sensor = fopen("/dev/lsm303agr0", "r"); if (sensor == NULL) { printf("Unable to create file\n"); return -ENOENT; } ret = ioctl(fileno(sensor), SNIOC_START, 0); if (ret < 0) { printf("IOCTL SNIOC_START failed %d\n", ret); } for (; ; ) { ret = ioctl(fileno(sensor), SNIOC_LSM303AGRSENSORREAD, (unsigned long)&sensor_data); if (ret < 0) { printf("IOCTL READ failed %d\n", ret); } printf("time:%d x:%d y:%d z:%d m_x:%d m_y:%d m_z:%d temp:%d\n", sensor_data.timestamp, sensor_data.x_data, sensor_data.y_data, sensor_data.z_data, sensor_data.m_x_data, sensor_data.m_y_data, sensor_data.m_z_data, sensor_data.temperature); sleep(2); } fclose(sensor); return EXIT_SUCCESS; }