Revision 0:fe0f43b69595, committed 2019-02-27

Comitter:

MACRUM

Date:

Wed Feb 27 06:48:28 2019 +0000

Commit message:

Initial commit

Changed in this revision

diff -r 000000000000 -r fe0f43b69595 BH1749NUC.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/BH1749NUC.cpp	Wed Feb 27 06:48:28 2019 +0000
@@ -0,0 +1,131 @@
+/*****************************************************************************
+  BH1749NUC.cpp
+
+ Copyright (c) 2018-2019 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 "mbed.h"
+#include "BH1749NUC.h"
+
+BH1749NUC::BH1749NUC(PinName sda, PinName scl, int addr) : m_i2c(sda, scl), m_addr(addr)
+{
+}
+
+BH1749NUC::~BH1749NUC()
+{
+    m_addr = 0;
+}
+
+int BH1749NUC::init(void)
+{
+    int rc;
+    char reg;
+
+    rc = read(BH1749NUC_SYSTEM_CONTROL, &reg, sizeof(reg));
+    if (rc != 0) {
+        DEBUG_PRINT("Can't access BH1749NUC\n");
+        return (rc);
+    }
+    reg = reg & 0x3F;
+    DEBUG_PRINT("BH1749NUC Part ID Value = %02x\n", reg);
+
+    if (reg != BH1749NUC_PART_ID_VAL) {
+        DEBUG_PRINT("Can't find BH1749NUC\n");
+        return (rc);
+    }
+
+    rc = read(BH1749NUC_MANUFACTURER_ID, &reg, sizeof(reg));
+    if (rc != 0) {
+        DEBUG_PRINT("Can't access BH1749NUC\n");
+        return (rc);
+    }
+    DEBUG_PRINT("BH1749NUC MANUFACTURER ID Register Value = %02x\n", reg);
+
+    if (reg != BH1749NUC_MANUFACT_ID_VAL) {
+        DEBUG_PRINT("Can't find BH1749NUC\n");
+        return (rc);
+    }
+
+    reg = BH1749NUC_MODE_CONTROL1_VAL;
+    rc = write(BH1749NUC_MODE_CONTROL1, &reg, sizeof(reg));
+    if (rc != 0) {
+        DEBUG_PRINT("Can't write BH1749NUC MODE_CONTROL1 register\n");
+        return (rc);
+    }
+
+    reg = BH1749NUC_MODE_CONTROL2_VAL;
+    rc = write(BH1749NUC_MODE_CONTROL2, &reg, sizeof(reg));
+    if (rc != 0) {
+        DEBUG_PRINT("Can't write BH1749NUC MODE_CONTROL2 register\n");
+        return (rc);
+    }
+
+    wait_ms(WAIT_TMT2_MAX);
+    return (rc);
+}
+
+int BH1749NUC::get_rawval(char *data)
+{
+    int rc;
+
+    rc = read(BH1749NUC_RED_DATA_LSB, data, GET_BYTE_RED_TO_GREEN2);
+    if (rc != 0) {
+        DEBUG_PRINT("Can't get BH1749NUC RGB, IR and GREEN2 value\n");
+    }
+
+    return (rc);
+}
+
+int BH1749NUC::get_val(unsigned short *data)
+{
+    int rc;
+    char val[GET_BYTE_RED_TO_GREEN2];
+
+    rc = get_rawval(val);
+    if (rc != 0) {
+        return (rc);
+    }
+
+    //val[6] and val[7] are RESERVED Register Value
+    data[0] = ((unsigned short)val[1] << 8) | val[0];
+    data[1] = ((unsigned short)val[3] << 8) | val[2];
+    data[2] = ((unsigned short)val[5] << 8) | val[4];
+    data[3] = ((unsigned short)val[9] << 8) | val[8];
+    data[4] = ((unsigned short)val[11] << 8) | val[10];
+
+    return (rc);
+}
+
+int BH1749NUC::write(char memory_address, char *data, int size)
+{
+    int rc = 0;
+
+    char t = memory_address;
+    m_i2c.write(m_addr, &t, 1, true);
+    rc = m_i2c.write(m_addr, data, size);
+    return (rc);
+}
+
+int BH1749NUC::read(char memory_address, char *data, int size)
+{
+    char t = memory_address;
+    m_i2c.write(m_addr, &t, 1, true);
+    return m_i2c.read(m_addr, data, size);
+}

diff -r 000000000000 -r fe0f43b69595 BH1749NUC.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/BH1749NUC.h	Wed Feb 27 06:48:28 2019 +0000
@@ -0,0 +1,123 @@
+/*****************************************************************************
+  BH1749NUC.h
+
+ Copyright (c) 2018 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 _BH1749NUC_H_
+#define _BH1749NUC_H_
+
+#include "mbed.h"
+
+#ifdef _DEBUG
+#undef DEBUG_PRINT
+#define DEBUG_PRINT(...) printf(__VA_ARGS__)
+#else
+#define DEBUG_PRINT(...)
+#endif
+
+#define BH1749NUC_DEVICE_ADDRESS_38             (0x38 << 1) // 7bit Addrss
+#define BH1749NUC_DEVICE_ADDRESS_39             (0x39 << 1) // 7bit Addrss
+#define BH1749NUC_PART_ID_VAL                   (0x0D)
+#define BH1749NUC_MANUFACT_ID_VAL               (0xE0)
+
+#define BH1749NUC_SYSTEM_CONTROL                (0x40)
+#define BH1749NUC_MODE_CONTROL1                 (0x41)
+#define BH1749NUC_MODE_CONTROL2                 (0x42)
+#define BH1749NUC_RED_DATA_LSB                  (0x50)
+#define BH1749NUC_MANUFACTURER_ID               (0x92)
+
+#define BH1749NUC_MODE_CONTROL1_MEAS_MODE_120MS (2)
+#define BH1749NUC_MODE_CONTROL1_MEAS_MODE_240MS (3)
+#define BH1749NUC_MODE_CONTROL1_RGB_GAIN_X1     (1 << 3)
+#define BH1749NUC_MODE_CONTROL1_RGB_GAIN_X32    (3 << 3)
+#define BH1749NUC_MODE_CONTROL1_IR_GAIN_X1      (1 << 5)
+#define BH1749NUC_MODE_CONTROL1_IR_GAIN_X32     (3 << 5)
+#define BH1749NUC_MODE_CONTROL2_RGB_EN          (1 << 4)
+
+#define BH1749NUC_MODE_CONTROL1_VAL             (BH1749NUC_MODE_CONTROL1_MEAS_MODE_120MS | BH1749NUC_MODE_CONTROL1_RGB_GAIN_X1 | BH1749NUC_MODE_CONTROL1_IR_GAIN_X1)
+#define BH1749NUC_MODE_CONTROL2_VAL             (BH1749NUC_MODE_CONTROL2_RGB_EN)
+
+#define GET_BYTE_RED_TO_GREEN2 (12)
+#define WAIT_TMT2_MAX          (340)
+
+/**  Interface for controlling BME280 Combined humidity and pressure sensor
+ *
+ * @code
+ * #include "mbed.h"
+ * #include "BH1749NUC.h"
+ * 
+ * BH1749NUC color(I2C_SDA, I2C_SCL);
+ * 
+ * int main(void) {
+ *     uint16_t buf[5];
+ *     color.init();
+ *  
+ *     while (1) {
+ *         color.get_val(buf);
+ *         printf("BH1749 color : [R] %04x, [G] %04x, [B] %04x, [IR] %04x, [G2] %04x\n", buf[0], buf[1], buf[2], buf[3], buf[4]);
+ *         wait(1);
+ *     }
+ * }
+ * @endcode
+ */
+
+/** BH1749NUC class
+ *
+ *  BH1749NUC: A library to correct color data using Rohm BH1749NUC color sensor device
+ *
+ */ 
+class BH1749NUC
+{
+public:
+    /** Create a BH1749NUC instance
+    *   which is connected to specified I2C pins with specified address
+    *
+    * @param sda I2C-bus SDA pin
+    * @param sdl I2C-bus SCL pin
+    * @param addr slave address of the I2C peripheral (default: 0x72)
+    */
+    BH1749NUC(PinName sda, PinName scl, int addr = BH1749NUC_DEVICE_ADDRESS_39);
+    /**
+    * BH1749NUC destructor
+    */
+    ~BH1749NUC();
+    /**
+    * Initialize BH1749NUC device
+    */
+    int init(void) ;
+    /**
+    * Get color sensor raw value
+    * @param data buffer to store raw data
+    */
+    int get_rawval(char *data);
+    /**
+    * Get color sensor value
+    * @param data buffer to store sensor data (R, B, G, IR and G2)
+    */
+    int get_val(unsigned short *data);
+private:
+    int write(char memory_address, char *data, int size);
+    int read(char memory_address, char *data, int size);
+    I2C m_i2c;
+    int m_addr;
+};
+
+#endif // _BH1749NUC_H_