SPI accelerometer library
Dependents: FRDMSTBC-A8471_SensorShield_HelloWorld
Fork of MMA8652FC by
FXLS8471.cpp
- Committer:
- AswinSivakumar
- Date:
- 2017-04-24
- Revision:
- 2:0eacd0e5db3b
- Parent:
- 1:ac1a9afd8401
File content as of revision 2:0eacd0e5db3b:
/* * Copyright (c) 2015 - 2016, Freescale Semiconductor, Inc. * Copyright 2016-2017 NXP * * Redistribution and use in source and binary forms, with or without modification, * are permitted provided that the following conditions are met: * * o Redistributions of source code must retain the above copyright notice, this list * of conditions and the following disclaimer. * * o Redistributions in binary form must reproduce the above copyright notice, this * list of conditions and the following disclaimer in the documentation and/or * other materials provided with the distribution. * * o Neither the name of the copyright holder nor the names of its * contributors may be used to endorse or promote products derived from this * software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ #include "FXLS8471.h" #include "mbed.h" FXLS8471::FXLS8471(PinName MOSI, PinName MISO, PinName CLK, PinName CS) : FXLS8471_spi(MOSI,MISO,CLK), FXLS8471_cs(CS) { FXLS8471_cs=1; } void FXLS8471::FXLS8471_config(void) { char d[2]; d[0] = FXLS8471_CTRL_REG1; //Puts device in Standby mode FXLS8471_cs=0; FXLS8471_spi.write(d[0]+128); FXLS8471_spi.write(0x00); FXLS8471_spi.write(0x00); FXLS8471_cs=1; d[0] = FXLS8471_CTRL_REG1; //Puts device in Active mode FXLS8471_cs=0; FXLS8471_spi.write(d[0]+128); FXLS8471_spi.write(0x01); FXLS8471_spi.write(0x01); FXLS8471_cs=1; } void FXLS8471::acquire_FXLS8471_data_g(float * a_data) { char data_bytes[7]; char d[1]; int count=1; d[0]=0x01; FXLS8471_cs=0; FXLS8471_spi.write(d[0]); FXLS8471_spi.write(0x00); while(count<7) { data_bytes[count]= FXLS8471_spi.write(0xff); count=count+1; } FXLS8471_cs=1; // a_data[0]= ((float)((int16_t)data_bytes[1])); a_data[0] = ((float)((int16_t)(((data_bytes[1]*256) + (data_bytes[2])))>> 4) * 0.0009765); a_data[1] = ((float)((int16_t)(((data_bytes[3]*256) + (data_bytes[4])))>> 4) * 0.0009765); a_data[2] = ((float)((int16_t)(((data_bytes[5]*256) + (data_bytes[6])))>> 4) * 0.0009765); }