A mbed-os v5 driver for BM1422AGMV (3 axis magnetic sensor, made by Rohm).
Dependents: rohm-SensorShield-example mbed_blinky
BM1422AGMV.h
- Committer:
- Ren Boting
- Date:
- 2019-02-18
- Revision:
- 0:203311da9813
File content as of revision 0:203311da9813:
/* Copyright (c) 2017 Renesas Electronics., MIT License * * Permission is hereby granted, free of charge, to any person obtaining a copy of this software * and associated documentation files (the "Software"), to deal in the Software without * restriction, including without limitation the rights to use, copy, modify, merge, publish, * distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the * Software is furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in all copies or * substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING * BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */ #ifndef _BM1422AGMV_H_ #define _BM1422AGMV_H_ #include "mbed.h" #define BM1422AGMV_DEVICE_ADDRESS_0E (0x0E << 1) #define BM1422AGMV_DEVICE_ADDRESS_0F (0x0F << 1) #define BM1422AGMV_WIA_VAL (0x41) #define BM1422AGMV_WIA (0x0F) #define BM1422AGMV_DATAX (0x10) #define BM1422AGMV_STA1 (0x18) #define BM1422AGMV_CNTL1 (0x1B) #define BM1422AGMV_CNTL2 (0x1C) #define BM1422AGMV_CNTL3 (0x1D) #define BM1422AGMV_AVE_A (0x40) #define BM1422AGMV_CNTL4 (0x5C) #define BM1422AGMV_STA1_RD_DRDY (1 << 6) #define BM1422AGMV_CNTL1_FS1 (1 << 1) #define BM1422AGMV_CNTL1_ODR_10Hz (0 << 3) #define BM1422AGMV_CNTL1_RST_LV (1 << 5) #define BM1422AGMV_CNTL1_OUT_BIT (1 << 6) #define BM1422AGMV_CNTL1_PC1 (1 << 7) #define BM1422AGMV_CNTL2_DRP (1 << 2) #define BM1422AGMV_CNTL2_DREN (1 << 3) #define BM1422AGMV_CNTL3_FORCE (1 << 6) #define BM1422AGMV_AVE_A_AVE4 (0 << 2) #define BM1422AGMV_CNTL1_VAL (BM1422AGMV_CNTL1_FS1 | BM1422AGMV_CNTL1_OUT_BIT | BM1422AGMV_CNTL1_PC1) #define BM1422AGMV_CNTL2_VAL (BM1422AGMV_CNTL2_DREN) #define BM1422AGMV_CNTL3_VAL (BM1422AGMV_CNTL3_FORCE) #define BM1422AGMV_CNTL4_VAL (0x0000) #define BM1422AGMV_AVE_A_VAL (BM1422AGMV_AVE_A_AVE4) #define BM1422AGMV_14BIT_SENS (24) #define BM1422AGMV_12BIT_SENS (6) //#define _DEBUG #ifdef _DEBUG #undef DEBUG_PRINT extern Serial pc; #define DEBUG_PRINT(...) pc.printf(__VA_ARGS__) #else #define DEBUG_PRINT(...) #endif class BM1422AGMV { public: /** * BM1422 constructor * * @param sda SDA pin * @param sdl SCL pin * @param addr slave address of the I2C peripheral (default: 0x1C) */ BM1422AGMV(PinName sda, PinName scl, int addr = BM1422AGMV_DEVICE_ADDRESS_0E); /** * Create a BM1422 instance which is connected to specified I2C pins * with specified address * * @param i2c_obj I2C object (instance) * @param addr slave address of the I2C-bus peripheral (default: 0x1C) */ BM1422AGMV(I2C &i2c_obj, int addr = BM1422AGMV_DEVICE_ADDRESS_0E); /** * BM1422 destructor */ ~BM1422AGMV(); /** Initializa BM1422 sensor * * Configure sensor setting * */ void initialize(void); /** * Get XYZ axis acceleration * * @returns XYZ (filled in float[3]) axis acceleration */ void get_val(float *data); private: I2C m_i2c; int m_addr; void readRegs(int addr, uint8_t * data, int len); void writeRegs(uint8_t * data, int len); uint8_t _sens; /** * Get XYZ axis acceleration * * @returns XYZ (rawdata) axis acceleration */ void get_rawval(unsigned char *data); /** * Convert XYZ axis acceleration * * @returns XYZ (float array [3]) axis acceleration */ void convert_uT(int16_t *rawdata, float *data); }; #endif