Thomas Raab
Handle rotary encoder connected to two pins. With interrupt. Operating encoder changes an int position value that can be polled.
Dependents: encoder_test distance_measure speed_measure straight_speed_control ... more
Diff: CRotaryEncoder.cpp
- Revision:
- 0:56f636261771
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/CRotaryEncoder.cpp Tue Nov 09 20:14:32 2010 +0000
@@ -0,0 +1,54 @@
+#include "mbed.h"
+#include "CRotaryEncoder.h"
+
+CRotaryEncoder::CRotaryEncoder(PinName pinA, PinName pinB)
+{
+ m_pinA = new InterruptIn(pinA);
+ m_pinA->rise(this, &CRotaryEncoder::rise);
+ m_pinA->fall(this, &CRotaryEncoder::fall);
+
+ m_pinB = new DigitalIn(pinB);
+ m_position = 0;
+}
+
+CRotaryEncoder::~CRotaryEncoder()
+{
+ delete m_pinA;
+ delete m_pinB;
+}
+
+int CRotaryEncoder::Get(void)
+{
+ return m_position;
+}
+
+void CRotaryEncoder::Set(int value)
+{
+ m_position = value;
+}
+
+
+void CRotaryEncoder::fall(void)
+{
+ if(*m_pinB == 1)
+ {
+ m_position++;
+ }
+ else
+ {
+ m_position--;
+ }
+}
+
+void CRotaryEncoder::rise(void)
+{
+ if(*m_pinB == 1)
+ {
+ m_position--;
+ }
+ else
+ {
+ m_position++;
+ }
+}
+