Diff: BH1790GLC.cpp

Revision:

0:68b1bd50b38b

--- /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);
+}
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