an I2C bus optical sensor for heart rate monitor
Diff: BH1790GLC.h
- Revision:
- 0:68b1bd50b38b
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/BH1790GLC.h Mon Jun 12 08:48:38 2017 +0000 @@ -0,0 +1,100 @@ +/***************************************************************************** + BH1790GLC.h + + Copyright (c) 2016 ROHM Co.,Ltd. + + 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 _BH1790GLC_H_ +#define _BH1790GLC_H_ + +#define BH1790GLC_DEVICE_ADDRESS (0x5B<<1) +#define BH1790GLC_MID_VAL (0xE0) +#define BH1790GLC_PID_VAL (0x0D) + +#define BH1790GLC_MANUFACTURER_ID (0x0F) +#define BH1790GLC_PART_ID (0x10) +#define BH1790GLC_MEAS_CONTROL1 (0x41) +#define BH1790GLC_DATAOUT_LEDOFF (0x54) + +#define BH1790GLC_MEAS_CONTROL1_RDY (1 << 7) +#define BH1790GLC_MEAS_CONTROL1_LED_LIGHTING_FREQ_128HZ (0 << 2) +#define BH1790GLC_MEAS_CONTROL1_RCYCLE_32HZ (2 << 0) + +#define BH1790GLC_MEAS_CONTROL2_LED_EN_00 (0 << 6) +#define BH1790GLC_MEAS_CONTROL2_LED_ON_TIME_0_3MS (0 << 5) +#define BH1790GLC_MEAS_CONTROL2_LED_CURRENT_10MA (12 << 0) + +#define BH1790GLC_MEAS_START_MEAS_ST (1 << 0) + +#define BH1790GLC_MEAS_CONTROL1_VAL (BH1790GLC_MEAS_CONTROL1_RDY | BH1790GLC_MEAS_CONTROL1_LED_LIGHTING_FREQ_128HZ | BH1790GLC_MEAS_CONTROL1_RCYCLE_32HZ) +#define BH1790GLC_MEAS_CONTROL2_VAL (BH1790GLC_MEAS_CONTROL2_LED_EN_00 | BH1790GLC_MEAS_CONTROL2_LED_ON_TIME_0_3MS | BH1790GLC_MEAS_CONTROL2_LED_CURRENT_10MA) +#define BH1790GLC_MEAS_START_VAL (BH1790GLC_MEAS_START_MEAS_ST) + +#include "mbed.h" + +/** BH1790GLC class + * + * BH1790GLC: an I2C bus optical sensor for heart rate monitor library + * + * BH1790GLC is optical sensor for heart rate monitor IC in + * which LED driver and green light detection photo-diode + * are incorporated. This device drives LED and provides + * the intensity of light reflected from body. + * + * For more information about BH1790GLC: + * http://www.rohm.com/web/global/datasheet/BH1790GLC/bh1790glc-e + * + * This was ported from Arduino library by H.Tanaka + * http://rohmfs.rohm.com/en/products/databook/applinote/ic/sensor/optical_sensor_for_heart_rate_monitor/bh1790glc-evk-001-manual-e.pdf + * http://rohmfs.rohm.com/en/products/databook/applinote/ic/sensor/optical_sensor_for_heart_rate_monitor/bh1790glc-software-manual-e.pdf + */ + +class BH1790GLC +{ +public: + /** Create a BH1790GLC instance connected to specified I2C pins with specified address + * + * @param sda I2C-bus SDA pin + * @param scl I2C-bus SCL pin + * @param i2c_address I2C-bus address (default: 0x5B<<1) + */ + BH1790GLC(PinName sda, PinName scl, char address = BH1790GLC_DEVICE_ADDRESS); + /** Create a BH1790GLC instance connected to specified I2C object with specified address + * + * @param i2c_obj I2C object (instance) + * @param i2c_address I2C-bus address (default: 0x5B<<1) + */ + BH1790GLC(I2C &i2c_obj, char address = BH1790GLC_DEVICE_ADDRESS); + /** Destructor of BH1790GLC + */ + ~BH1790GLC(); + + void init(void); + int meas_start(void); + int get_rawval(char *data); + int get_val(unsigned short *data); + int write(char memory_address,char *data,int size); + int read(char memory_address,char *data, int size); +private: + I2C *i2c_p; + I2C &i2c; + char adr; +}; +#endif \ No newline at end of file