tcs3414cs:: added new color sensor

Signed-off-by: Kiveisha Yevgeniy <yevgeniy.kiveisha@intel.com>

src/tcs3414cs/tcs3414cs.cxx

@@ -0,0 +1,156 @@
+/*
+ * Author: Yevgeniy Kiveisha <yevgeniy.kiveisha@intel.com>
+ * Copyright (c) 2014 Intel Corporation.
+ *
+ * Credits to Seeed Studeo.
+ * Based on Seeed Studeo code example,
+ * http://www.seeedstudio.com/wiki/index.php?title=Twig_-_I2C_Color_Sensor_v0.9b.
+ *
+ * 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 <iostream>
+#include <unistd.h>
+#include <stdlib.h>
+
+#include "tcs3414cs.h"
+
+using namespace upm;
+
+struct TCS3414CSException : public std::exception {
+    std::string message;
+    TCS3414CSException (std::string msg) : message (msg) { }
+    ~TCS3414CSException () throw () { }
+    const char* what() const throw () { return message.c_str(); }
+};
+
+TCS3414CS::TCS3414CS () {
+    m_name = "TCS3414CS";
+    m_i2Ctx = mraa_i2c_init(0);
+
+    mraa_result_t ret = mraa_i2c_address(m_i2Ctx, ADDR);
+    if (ret != MRAA_SUCCESS) {
+        throw TCS3414CSException ("Couldn't initilize I2C.");
+    }
+
+    // Set timing register
+    i2cWriteReg (REG_TIMING, INTEG_MODE_FREE);
+    usleep (100000);
+
+    // Set interrupt source register
+    i2cWriteReg (REG_INT_SOURCE, INT_SOURCE_GREEN);
+    usleep (100000);
+
+    // Set interrupt control register
+    i2cWriteReg (REG_INT, INTR_LEVEL | INTR_PERSIST_EVERY);
+    usleep (100000);
+
+    // Set gain
+    i2cWriteReg (REG_GAIN, GAIN_1 | PRESCALER_4);
+    usleep (100000);
+
+    // Enable ADC
+    i2cWriteReg (REG_CTL, CTL_DAT_INIITIATE);
+    usleep (100000);
+}
+
+TCS3414CS::~TCS3414CS () {
+    mraa_i2c_stop(m_i2Ctx);
+}
+
+void
+TCS3414CS::readRGB (tcs3414sc_rgb_t * rgb) {
+    uint8_t buffer[8];
+
+    // We need 7 bytes of data.
+    if (i2cReadReg_N (REG_BLOCK_READ, 8, buffer) > 7) {
+        rgb->g = buffer[1] * 256 + buffer[0];
+        rgb->r = buffer[3] * 256 + buffer[2];
+        rgb->b = buffer[5] * 256 + buffer[4];
+        rgb->clr = buffer[7] * 256 + buffer[6];
+    }
+}
+
+void
+TCS3414CS::clearInterrupt () {
+    mraa_result_t error = MRAA_SUCCESS;
+
+    if (m_i2Ctx == NULL) {
+        throw TCS3414CSException ("Couldn't find initilized I2C.");
+    }
+
+    error = mraa_i2c_address (m_i2Ctx, ADDR);
+    error = mraa_i2c_write_byte (m_i2Ctx, CLR_INT);
+
+    if (error != MRAA_SUCCESS) {
+        throw TCS3414CSException ("Couldn't clear interrupt.");
+    }
+}
+
+/*
+ * **************
+ *  private area
+ * **************
+ */
+uint16_t
+TCS3414CS::i2cReadReg_N (int reg, unsigned int len, uint8_t * buffer) {
+    int readByte = 0;
+
+    if (m_i2Ctx == NULL) {
+        throw TCS3414CSException ("Couldn't find initilized I2C.");
+    }
+
+    mraa_i2c_address(m_i2Ctx, ADDR);
+    mraa_i2c_write_byte(m_i2Ctx, reg);
+
+    mraa_i2c_address(m_i2Ctx, ADDR);
+    readByte = mraa_i2c_read(m_i2Ctx, buffer, len);
+    return readByte;
+}
+
+mraa_result_t
+TCS3414CS::i2cWriteReg_N (uint8_t reg, unsigned int len, uint8_t * buffer) {
+    mraa_result_t error = MRAA_SUCCESS;
+
+    if (m_i2Ctx == NULL) {
+        throw TCS3414CSException ("Couldn't find initilized I2C.");
+    }
+
+    error = mraa_i2c_address (m_i2Ctx, ADDR);
+    error = mraa_i2c_write_byte (m_i2Ctx, reg);
+    error = mraa_i2c_write (m_i2Ctx, buffer, len);
+
+    return error;
+}
+
+mraa_result_t
+TCS3414CS::i2cWriteReg (uint8_t reg, uint8_t data) {
+    mraa_result_t error = MRAA_SUCCESS;
+
+    if (m_i2Ctx == NULL) {
+        throw TCS3414CSException ("Couldn't find initilized I2C.");
+    }
+
+    error = mraa_i2c_address (m_i2Ctx, ADDR);
+    error = mraa_i2c_write_byte (m_i2Ctx, reg);
+    error = mraa_i2c_write_byte (m_i2Ctx, data);
+
+    return error;
+}