Revision 0:b98e768bc655, committed 2016-05-03

Comitter:

grantphillips

Date:

Tue May 03 20:45:40 2016 +0000

Commit message:

v1.0

Changed in this revision

diff -r 000000000000 -r b98e768bc655 TCS3200.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/TCS3200.cpp	Tue May 03 20:45:40 2016 +0000
@@ -0,0 +1,72 @@
+#include "TCS3200.h"
+#include "mbed.h"
+ 
+ 
+TCS3200::TCS3200(PinName S0, PinName S1, PinName S2, PinName S3, PinName OUT) : 
+mS0(S0), mS1(S1), mS2(S2), mS3(S3), signal(OUT) 
+{
+    SetMode(SCALE_100);
+    signal.rise(this,&TCS3200::HighTrigger);
+    signal.fall(this,&TCS3200::LowTrigger);
+}
+ 
+long TCS3200::ReadRed() {
+    mS2=0;                    
+    mS3=0;
+    wait(0.1);     //Delay to allow frequency to change for the set color
+    return(pulsewidth);
+}
+
+long TCS3200::ReadGreen() {
+    mS2=1;                    
+    mS3=1;
+    wait(0.1);     //Delay to allow frequency to change for the set color
+    return(pulsewidth);
+}
+
+long TCS3200::ReadBlue() {
+    mS2=0;                    
+    mS3=1;
+    wait(0.1);     //Delay to allow frequency to change for the set color
+    return(pulsewidth);
+}
+
+long TCS3200::ReadClear() {
+    mS2=1;                    
+    mS3=0;
+    wait(0.1);     //Delay to allow frequency to change for the set color
+    return(pulsewidth);
+}
+
+void TCS3200::SetMode(TCS3200Mode mode) {
+    if(mode == POWERDOWN) {         //TCS3200 in power down
+        mS0 = 0;                     
+        mS1 = 0;
+    }
+    else if(mode == SCALE_2) {      //Output frequency at 2% scaling
+        mS0 = 0;                     
+        mS1 = 1;
+    }
+    else if(mode == SCALE_20) {     //Output frequency at 20% scaling
+        mS0 = 1;                     
+        mS1 = 0;
+    }
+    else if(mode == SCALE_100) {    //Output frequency at 100% scaling
+        mS0 = 1;                     
+        mS1 = 1;
+    }
+    else {                          //default is POWERDOWN                
+        mS0 = 0;                     
+        mS1 = 0;
+    }
+}
+
+void TCS3200::HighTrigger() {
+    timer.start();
+}
+
+void TCS3200::LowTrigger() {
+    timer.stop();
+    pulsewidth = timer.read_us();
+    timer.reset();
+}
\ No newline at end of file

diff -r 000000000000 -r b98e768bc655 TCS3200.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/TCS3200.h	Tue May 03 20:45:40 2016 +0000
@@ -0,0 +1,132 @@
+/* TCS3200 Library v1.0
+ * Copyright (c) 2016 Grant Phillips
+ * grant.phillips@nmmu.ac.za
+ *
+ *
+ * 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 TCS3200_H
+#define TCS3200_H
+ 
+#include "mbed.h"
+
+/** Class library for a TCS3200 Color Sensor Module.
+ *
+ * Example:
+ * @code
+ * #include "mbed.h"
+ * #include "TCS3200.h"
+ *
+ * TCS3200 color(PD_8, PD_9, PD_10, PD_11, PA_1);  //Create a TCS3200 object 
+ * //            S0    S1    S2     S3     OUT
+ * 
+ * int main() {
+ *     long red, green, blue, clear;
+ *    
+ *     //Set the scaling factor to 100%
+ *     color.SetMode(TCS3200::SCALE_100);        
+ *
+ *     while(1){
+ *         //Read the HIGH pulse width in nS for each color.
+ *         //The lower the value, the more of that color is detected 
+ *         red = color.ReadRed();
+ *         green = color.ReadGreen();
+ *         blue = color.ReadBlue();
+ *         clear = color.ReadClear();
+ *
+ *         printf("RED: %10d     GREEN: %10d     BLUE: %10d     CLEAR: %10d     ", red, green, blue, clear);
+ *            
+ *         wait(0.1);
+ *     }
+ * }
+ * @endcode
+ */
+ 
+class TCS3200 {
+  public:
+    enum TCS3200Mode {
+        POWERDOWN = 0,
+        SCALE_2 = 1,
+        SCALE_20 = 2,
+        SCALE_100 = 3,
+    };
+    
+    /** Create a TCS3200 object connected to the specified pins.
+    * @param S0 Frequency scaling output pin S0
+    * @param S1 Frequency scaling output pin S1
+    * @param S2 Photo diode selection output pin S2
+    * @param S3 Photo diode selection output pin S3
+    * @param OUT Frequency input pin
+    */
+    TCS3200(PinName S0, PinName S1, PinName S2, PinName S3, PinName OUT);
+    
+    /** Reads the output signal's HIGH pulse for RED.
+    * @param 
+    *     None
+    * @return 
+    *     Duration as nanoseconds (ns).
+    */
+    long ReadRed();
+    
+    /** Reads the output signal's HIGH pulse for GREEN.
+    * @param 
+    *     None
+    * @return 
+    *     Duration as nanoseconds (ns).
+    */
+    long ReadGreen();
+    
+    /** Reads the output signal's HIGH pulse for BLUE.
+    * @param 
+    *     None
+    * @return 
+    *     Duration as nanoseconds (ns).
+    */
+    long ReadBlue();
+    
+    /** Reads the output signal's HIGH pulse for CLEAR.
+    * @param 
+    *     None
+    * @return 
+    *     Duration as nanoseconds (ns).
+    */
+    long ReadClear();
+    
+    /** Sets the mode of operation. 
+    * @param 
+    *     mode POWERDOWN, SCALE_2 (2% scaling), SCALE_20 (20% scaling), SCALE_100 (100% scaling).
+    * @return 
+    *     None
+    */
+    void SetMode(TCS3200Mode mode);
+    
+  private:
+    DigitalOut mS0;
+    DigitalOut mS1;
+    DigitalOut mS2;
+    DigitalOut mS3;
+    InterruptIn signal;
+    Timer timer;
+    long pulsewidth;
+    void HighTrigger();
+    void LowTrigger();
+};
+ 
+#endif
\ No newline at end of file