1 /****************************************************************************** 2 * $Id: AKFS_AK8975.c 580 2012-03-29 09:56:21Z yamada.rj $ 3 ****************************************************************************** 4 * 5 * Copyright (C) 2012 Asahi Kasei Microdevices Corporation, Japan 6 * 7 * Licensed under the Apache License, Version 2.0 (the "License"); 8 * you may not use this file except in compliance with the License. 9 * You may obtain a copy of the License at 10 * 11 * http://www.apache.org/licenses/LICENSE-2.0 12 * 13 * Unless required by applicable law or agreed to in writing, software 14 * distributed under the License is distributed on an "AS IS" BASIS, 15 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 16 * See the License for the specific language governing permissions and 17 * limitations under the License. 18 */ 19 #include "AKFS_AK8975.h" 20 #include "AKFS_Device.h" 21 22 /*! 23 */ 24 int16 AKFS_DecompAK8975( 25 const int16 mag[3], 26 const int16 status, 27 const uint8vec* asa, 28 const int16 nhdata, 29 AKFVEC hdata[] 30 ) 31 { 32 /* put st1 and st2 value */ 33 if (AK8975_ST_ERROR(status)) { 34 return AKFS_ERROR; 35 } 36 37 /* magnetic */ 38 AKFS_BufShift(nhdata, 1, hdata); 39 hdata[0].u.x = mag[0] * (((asa->u.x)/256.0f) + 0.5f); 40 hdata[0].u.y = mag[1] * (((asa->u.y)/256.0f) + 0.5f); 41 hdata[0].u.z = mag[2] * (((asa->u.z)/256.0f) + 0.5f); 42 43 return AKFS_SUCCESS; 44 } 45 46
