an I2C bus optical sensor for heart rate monitor

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API Documentation at this revision

Comitter:
hidekich1
Date:
Mon Jun 12 08:48:38 2017 +0000
Commit message:
Firse commit from ROHM Arduino library

Changed in this revision

BH1790GLC.cpp Show annotated file Show diff for this revision Revisions of this file
BH1790GLC.h Show annotated file Show diff for this revision Revisions of this file
diff -r 000000000000 -r 68b1bd50b38b BH1790GLC.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/BH1790GLC.cpp	Mon Jun 12 08:48:38 2017 +0000
@@ -0,0 +1,101 @@
+/*****************************************************************************
+  BH1790GLC.cpp
+
+ 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.
+******************************************************************************/
+
+
+#include "BH1790GLC.h"
+
+BH1790GLC::BH1790GLC( PinName sda, PinName scl, char address )
+    : i2c_p( new I2C( sda, scl ) ), i2c( *i2c_p ), adr( address )
+{
+    init();
+}
+
+BH1790GLC::BH1790GLC( I2C &i2c_obj, char address )
+    : i2c_p( NULL ), i2c( i2c_obj ), adr( address )
+{
+    init();
+}
+
+BH1790GLC::~BH1790GLC()
+{
+    if ( NULL != i2c_p )
+        delete i2c_p;
+}
+
+void BH1790GLC::init(void)
+{
+}
+
+int BH1790GLC::meas_start(void)
+{
+    int rc;
+    char val[3];
+    val[0] = BH1790GLC_MEAS_CONTROL1_VAL;
+    val[1] = BH1790GLC_MEAS_CONTROL2_VAL;
+    val[2] = BH1790GLC_MEAS_START_VAL;
+    rc = write(BH1790GLC_MEAS_CONTROL1, val, sizeof(val));
+    return (rc);
+}
+
+int BH1790GLC::get_rawval(char *data)
+{
+    int rc;
+    rc = read(BH1790GLC_DATAOUT_LEDOFF, data, 4);
+    return (rc);
+}
+
+int BH1790GLC::get_val(unsigned short *data)
+{
+    int rc;
+    char val[4];
+    rc = get_rawval(val);
+    data[0] = ((unsigned short)val[1] << 8) | (val[0]);
+    data[1] = ((unsigned short)val[3] << 8) | (val[2]);
+    return (rc);
+}
+
+int BH1790GLC::write(char memory_address, char *data, int size)
+{
+    int rc;
+    char cmd[size];
+    cmd[0] = memory_address;
+    for (int i=0; i<size; i++) {
+        cmd[i+1] = data[i];
+    }
+    rc = i2c.write( adr, cmd, size+1,true);
+    return (rc);
+}
+
+int BH1790GLC::read(char memory_address, char *data, int size)
+{
+    int rc;
+    char cmd[size];
+    cmd[0] = memory_address;
+    rc = i2c.write( adr, cmd, 1, false);
+    if (rc !=0){
+        return (rc);
+    }
+    rc = i2c.read ( adr, data, size);
+    return (rc);
+}
\ No newline at end of file
diff -r 000000000000 -r 68b1bd50b38b BH1790GLC.h
--- /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