Diff: library/RotaryInc.cpp

Revision:

0:a8a56075e947

Child:

1:17051435cfc5

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/library/RotaryInc.cpp	Sat May 18 12:09:43 2019 +0000
@@ -0,0 +1,127 @@
+#include "RotaryInc.hpp"
+
+RotaryInc::RotaryInc(PinName pinA, PinName pinB,int mode):mode(mode){
+    measur = false;
+    init(pinA,pinB);
+}
+
+RotaryInc::RotaryInc(PinName pinA,PinName pinB,double circumference,int Resolution,int mode)
+    :mode(mode),Resolution(Resolution),circumference(circumference){
+    measur = true;
+    zero();
+    init(pinA,pinB);
+}
+
+void RotaryInc::init(PinName pinA,PinName pinB){
+    A = new InterruptIn(pinA,PullUp);
+    B = new InterruptIn(pinB,PullUp);
+    A->rise(callback(this,&RotaryInc::riseA));
+        
+    if(mode == 2){
+        A->fall(callback(this,&RotaryInc::fallA));
+    }else if(mode == 4){
+        A->fall(callback(this,&RotaryInc::fallA));
+        B->rise(callback(this,&RotaryInc::riseB));
+        B->fall(callback(this,&RotaryInc::fallB));
+    }else{
+        mode = 1;
+    }
+}
+
+void RotaryInc::zero(){
+    time.stop();
+    time.reset();
+    startflag = false;
+    flag = false;
+    last[0] = pulse;
+    speed = 0;
+    count = 0;
+    sum = 0;
+    now = 0;
+}
+
+void RotaryInc::calcu(){
+    if(!startflag){
+        time.start();
+        startflag = true;
+        last[0] = pulse;
+        pre_t[0] = 0;
+        count = 1;
+    }else if(flag){
+        now = time.read();
+        time.reset();
+        sum -= pre_t[count];
+        pre_t[count] = now;
+        sum += now;
+        speed = (double)(pulse - last[count]) / sum;
+        last[count] = pulse;
+        if(count < 19){
+            count++;
+        }else{
+            count = 0;
+        }
+    }else{
+        now = time.read();
+        time.reset();
+        pre_t[count] = now;
+        sum += now;
+        speed = (double)(pulse - last[0]) / sum;
+        last[count] = pulse;
+        count++;
+        if(count > 19){
+            count = 0;
+            flag = true;
+        }
+    }
+}
+
+void RotaryInc::riseA(){
+    B->read() ? pulse-- : pulse++;
+    if(measur)calcu();    
+}
+
+void RotaryInc::fallA(){
+    B->read() ? pulse++ : pulse--;
+    if(measur)calcu();
+}
+
+void RotaryInc::riseB(){
+    A->read() ? pulse++ : pulse--;
+    if(measur)calcu();
+}
+
+void RotaryInc::fallB(){
+    A->read() ? pulse-- : pulse++;
+    if(measur)calcu();
+}
+
+long long RotaryInc::get(){
+    return pulse;
+}
+
+double RotaryInc::getSpeed(){
+    if(!measur)return 0;
+    if(time.read_ms() > 150){
+        zero();
+    }
+    return speed / Resolution / mode * circumference;
+}
+
+int RotaryInc::diff(){
+    int diff = pulse - prev;
+    prev = pulse;
+    return diff;
+}
+    
+void RotaryInc::reset(){
+    pulse = 0;
+    prev = 0;
+    if(measur)zero();
+}
+
+RotaryInc::~RotaryInc(){
+    A->disable_irq();
+    B->disable_irq();
+    delete A;
+    delete B;
+}
\ No newline at end of file