Revision 0:a32ab75adcad, committed 2015-11-03

Comitter:

aravindsv

Date:

Tue Nov 03 06:12:30 2015 +0000

Commit message:

Simple Encoder class that does not take direction into account

Changed in this revision

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/AVEncoder.cpp	Tue Nov 03 06:12:30 2015 +0000
@@ -0,0 +1,54 @@
+/**
+ * @author Aravind Vadali
+ *
+ * @section LICENSE
+ *
+ * Copyright (c) 2015
+ *
+ * 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.
+ *
+ * @section DESCRIPTION
+ * Because the QEI library is buggy as !@#$
+ * Instead of even trying to determine direction, this will just give number of 
+ * pulses. A more fleshed out solution where direction is taken into account can 
+ * be worked out later.
+ **/
+ 
+#include "AVEncoder.h"
+ 
+
+AVEncoder::AVEncoder(PinName channelA, PinName channelB) : chanA(channelA), chanB(channelB) {
+    m_pulses = 0;
+    chanA.rise(this, &AVEncoder::incrementCount);
+    chanA.fall(this, &AVEncoder::incrementCount);
+    chanB.rise(this, &AVEncoder::incrementCount);
+    chanB.fall(this, &AVEncoder::incrementCount);
+}
+
+void AVEncoder::reset() {
+    m_pulses = 0;
+}
+
+unsigned long int AVEncoder::getPulses() {
+    return m_pulses;
+}
+
+void AVEncoder::incrementCount() {
+    m_pulses++;
+}
\ No newline at end of file

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/AVEncoder.h	Tue Nov 03 06:12:30 2015 +0000
@@ -0,0 +1,55 @@
+/**
+ * @author Aravind Vadali
+ *
+ * @section LICENSE
+ *
+ * Copyright (c) 2015
+ *
+ * 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.
+ *
+ * @section DESCRIPTION
+ * Because the QEI library is buggy as !@#$
+ * Instead of even trying to determine direction, this will just give number of 
+ * pulses. A more fleshed out solution where direction is taken into account can 
+ * be worked out later.
+ **/
+ 
+#ifndef QEI_H
+#define QEI_H
+
+/**
+ * Includes
+ */
+#include "mbed.h"
+
+class AVEncoder {
+    
+public:
+    AVEncoder(PinName channelA, PinName channelB);
+    unsigned long int getPulses();
+    void reset();
+private:
+    unsigned long int m_pulses;
+    InterruptIn chanA;
+    InterruptIn chanB;
+    void incrementCount();
+};
+
+
+#endif /* QEI_H */
\ No newline at end of file