Diff: MX.cpp

Revision:

11:19e8022f60ea

Parent:

10:2acfa1a84c96

Child:

12:6ac3cac5677c

--- a/MX.cpp	Sat Jul 02 18:06:59 2016 +0000
+++ b/MX.cpp	Wed Jul 13 15:53:34 2016 +0000
@@ -2,11 +2,15 @@
 
 #include <cmath>
 
-MX::MX(communication_1& line, int ID, float gear_train) : 
-  _line(line), 
-  _ID(ID),
-  _gear_train(gear_train) {
-  
+#define MOVING_SPEED_UNIT_RPM 0.114
+
+MX::MX(communication_1& line, int ID, float gear_train)
+    : _line(line)
+    , _ID(ID)
+    , _gear_train(gear_train) {
+      maxSpeedDegreeS = 360;
+      limitCWDegrees = 0;
+      limitCCWDegrees = 0;
 }
 
 MX::~MX() {
@@ -14,50 +18,49 @@
 
 void MX::setID(int newID) {
 
-  char data[1];
-  data[0] = newID;
+    char data[1];
+    data[0] = newID;
+
+    if (MX_DEBUG) {
+        printf("Setting ID from 0x%x to 0x%x\n", _ID, newID);
+    }
 
-  if (MX_DEBUG) {
-    printf("Setting ID from 0x%x to 0x%x\n", _ID, newID);
-  }
+    _line.write(_ID, MX_REG_ID, 1, data);
+    _ID = newID;
+}
 
-  _line.write(_ID, MX_REG_ID, 1, data);
-  _ID = newID;
+int MX::getID() {
+  return _ID;
 }
 
 void MX::setGoalPosition(float degrees) {
+    setMode(2);
+    setCRSpeed(maxSpeedDegreeS);
     setGoal(degrees);
 }
 
 int MX::setGoal(float degrees, int flags) {
-if((_mode==0)&&((degrees<0)||(degrees>360))) 
-    {
-    if(MX_DEBUG==1) 
-    {  
-    printf("Error, wheel mode ");
-    }
-    return(1);
-        
+    if ((_mode == 0) && ((degrees < 0) || (degrees > 360))) {
+        if (MX_DEBUG == 1) {
+            printf("Error, wheel mode ");
+        }
+        return (1);
     }
-if (_mode == 1) 
-    { 
-    if(MX_DEBUG==1) 
-    {  
-    printf("Error, wheel mode ");
-    }
-    return(1);
-        
+
+    if (_mode == 1) {
+        if (MX_DEBUG == 1) {
+            printf("Error, wheel mode ");
+        }
+        return (1);
     }
-    if((_mode==2)&&((degrees<0)||(degrees>360)))
-    {
-       if(MX_DEBUG==1) 
-    {  
-    printf("Error, wheel mode ");
-    }
-    return(1);
-       
-    }  
-    
+
+    //if ((_mode == 2) && ((degrees < 0) || (degrees > 360))) {
+        //if (MX_DEBUG == 1) {
+            //printf("Error, wheel mode ");
+        //}
+        //return (1);
+    //}
+
     char reg_flag = 0;
     char data[2];
 
@@ -66,10 +69,15 @@
         reg_flag = 1;
     }
 
-    
-    short  goal = (int)(degrees/goal_resolution );     /// chiedere se può andar bene short int****
+    if (degrees > limitCWDegrees && limitCWDegrees != 0) {
+      degrees = limitCWDegrees;
+    } else if (degrees < limitCCWDegrees && limitCCWDegrees != 0){
+      degrees = limitCCWDegrees;
+    }
+
+    uint16_t goal = (int)(degrees * _gear_train / goal_resolution); 
     if (MX_DEBUG) {
-        printf("SetGoal to 0x%x\n",goal);
+        printf("SetGoal to 0x%x\n", goal);
     }
 
     data[0] = goal & 0xff; // bottom 8 bits
@@ -77,42 +85,83 @@
 
     // write the packet, return the error code
     int rVal = _line.write(_ID, MX_REG_GOAL_POSITION, 2, data, reg_flag);
-    
+
     if (flags == 1) {
         // block until it comes to a halt
-        while (isMoving()) {}
+        while (isMoving()) {
+        }
     }
 }
 
-float MX::getVolts (void) {
+float MX::getVolts(void) {
     if (MX_DEBUG) {
-        printf("\nGetVolts(%d)",_ID);
+        printf("\nGetVolts(%d)", _ID);
     }
     char data[1];
     int ErrorCode = _line.read(_ID, MX_REG_VOLTS, 1, data);
-    float volts = data[0]/10.0;
-    return(volts);
+    float volts = data[0] / 10.0;
+    return (volts);
 }
 
-float MX::getCurrent(void)
-{
+float MX::getCurrent(void) {
     if (MX_DEBUG) {
         printf("\nGetCurrent(%d)", _ID);
     }
     char data[1];
     int ErrorCode = _line.read(_ID, MX_REG_CURRENT, 1, data);
-    float ampere  = 4.5 * (data[0] - 2048 )  ;
-    return(ampere);
-    
+    float ampere = 4.5 * (data[0] - 2048);
+    return (ampere);
+}
+
+float MX::getPGain() {
+    char data[1];
+    _line.read(_ID, MX_REG_PGAIN, 1, data);
+    return (float) *data / 8;
+}
+
+float MX::getIGain() {
+    char data[1];
+    _line.read(_ID, MX_REG_IGAIN, 1, data);
+    return (float) *data * 1000 / 2048;
+}
+
+float MX::getDGain() {
+    char data[1];
+    _line.read(_ID, MX_REG_DGAIN, 1, data);
+    return (float) *data * 4 / 1000;
 }
 
-
+void MX::setPGain(float gain) {
+    char data[1];
+    *data = gain * 8;
+    _line.write(_ID, MX_REG_PGAIN, 1, data);
+}
+void MX::setIGain(float gain) {
+    char data[1];
+    *data = gain / 1000 * 2048;
+    _line.write(_ID, MX_REG_IGAIN, 1, data);
+}
+void MX::setDGain(float gain) {
+    char data[1];
+    *data = gain / 4 * 1000;
+    _line.write(_ID, MX_REG_DGAIN, 1, data);
+}
 
-float MX::getPGain() { return 0; }
-float MX::getIGain() { return 0; }
-float MX::getDGain() { return 0; }
-void MX::setMaxTorque(float torque) { } 
-void MX::setMotorEnabled(bool enabled) { } 
+void MX::setMaxTorque(float maxTorque) {
+    char data[2];
+    short torqueValue = maxTorque * 0x3ff; 
+    data[0] = torqueValue & 0xff; // bottom 8 bits
+    data[1] = torqueValue >> 8;   // top 8 bits
+    // write the packet, return the error code
+    _line.write(_ID, MX_REG_MAXTORQUE, 2, data);
+}
+
+void MX::setMotorEnabled(bool enabled) {
+    char data[1];
+    data[0] = enabled; // bottom 8 bits
+    // write the packet, return the error code
+    _line.write(_ID, MX_REG_MOTORONOFF, 1, data);
+}
 
 float MX::getPosition(void) {
     if (MX_DEBUG) {
@@ -123,7 +172,7 @@
 
     int ErrorCode = _line.read(_ID, MX_REG_POSITION, 2, data);
     short position = data[0] + (data[1] << 8);
-    float angle = (position * 300)/4093;
+    float angle = (float)position * 0.088;
 
     return (angle);
 }
@@ -131,112 +180,120 @@
 
 bool MX::isMoving() {
     char data[1];
-    _line.read(_ID,MX_REG_MOVING,1,data);
-    return(data[0]);
+    _line.read(_ID, MX_REG_MOVING, 1, data);
+    return (data[0]);
 }
 
-void MX::setMode(int mode){
-  switch (mode){
-    //Wheel Mode
-    case (0): 
-      setCWLimit(0);
-      setCCWLimit(0);
-      setCRSpeed(0.0);
-      break;
-      //Joint Mode
-    case (1): 
-      setCWLimit(MX_RESOLUTION);
-      setCCWLimit(MX_RESOLUTION);
-      setCRSpeed(0.0);
-      break;
-      //Multi-turn Mode 
-    case (2): 
-      setCWLimit(360);
-      setCCWLimit(360);
-      setCRSpeed(0.0);
-      break;
-      //other cases
-    default: 
-      if(READ_DEBUG){
-        printf("Not valid mode"); 
-        return;
-      }   
-  }
-  _mode = mode;
+void MX::setMode(int mode) {
+    switch (mode) {
+        //Wheel Mode
+        case (0):
+            setCWLimitUnits(0);
+            setCCWLimitUnits(0);
+            //setCRSpeed(0.0);
+            break;
+        //Joint Mode
+        case (1):
+            setCWLimitUnits(4000);
+            setCCWLimitUnits(4000);
+            //setCRSpeed(0.0);
+            break;
+        //Multi-turn Mode
+        case (2):
+            setCWLimitUnits(4095);
+            setCCWLimitUnits(4095);
+            //setCRSpeed(0.0);
+            break;
+        //other cases
+        default:
+            if (READ_DEBUG) {
+                printf("Not valid mode");
+                return;
+            }
+    }
+    _mode = mode;
 }
 
-void MX::setCWLimit(float degrees){
-  char data[2];
-
-  short limit = (short)(MX_BIT_DEG * degrees * _gear_train);
-
-  data[0] = limit & 0xff; // bottom 8 bits
-  data[1] = limit >> 8;   // top 8 bits
-
-  // write the packet, return the error code
-  _line.write(_ID, MX_REG_CW_LIMIT, 2, data);
+void MX::setCWLimitUnits(short limit) {
+    char data[2];
+    data[0] = limit & 0xff; // bottom 8 bits
+    data[1] = limit >> 8;   // top 8 bits
+    // write the packet, return the error code
+    _line.write(_ID, MX_REG_CW_LIMIT, 2, data);
+}
+void MX::setCCWLimitUnits(short limit) {
+    char data[2];
+    data[0] = limit & 0xff; // bottom 8 bits
+    data[1] = limit >> 8;   // top 8 bits
+    // write the packet, return the error code
+    _line.write(_ID, MX_REG_CCW_LIMIT, 2, data);
 }
 
-void MX::setCCWLimit(float degrees){
-  char data[2];
-
-  // 1023 / 300 * degrees
-  short limit = (4093 * degrees) / 300;
+void MX::setCWLimit(float degrees) {
+    limitCWDegrees = degrees;
+    //short limit = (short)(MX_BIT_DEG * degrees * _gear_train);
+    //setCWLimit(limit);
+}
 
-  if (MX_DEBUG) {
-    printf("SetCCWLimit to 0x%x\n",limit);
-  }
-
-  data[0] = limit & 0xff; // bottom 8 bits
-  data[1] = limit >> 8;   // top 8 bits
-
-  // write the packet, return the error code
-  _line.write(_ID, MX_REG_CCW_LIMIT, 2, data);
+void MX::setCCWLimit(float degrees) {
+    limitCCWDegrees = degrees;
+    //short limit = (short)(MX_BIT_DEG * degrees * _gear_train);
+    //setCCWLimit(limit);
 }
 
 
-void MX::setSpeed(float goal_speed) {
+void MX::setSpeed(float goalSpeedDegreeS) {
+  setMode(0);
+  setCRSpeed(goalSpeedDegreeS);
+}
 
+void MX::setMaxSpeed(float maxSpeedDegreeS) {
+  this->maxSpeedDegreeS = maxSpeedDegreeS;
+}
+
+void MX::setCRSpeed(float goalSpeedDegreeS) {
     // bit 10     = direction, 0 = CCW, 1=CW
     // bits 9-0   = Speed
     char data[2];
 
-    int goal = (0x3ff * std::abs(goal_speed * _gear_train));
+    float rpm = std::abs(goalSpeedDegreeS * _gear_train) / 360 * 60;
+    int goal = rpm / MOVING_SPEED_UNIT_RPM;
+    goal = fmin(goal, 0x3ff);
 
     // Set direction CW if we have a negative speed
-    if (goal_speed < 0) {
+    if (goalSpeedDegreeS < 0) {
         goal |= (0x1 << 10);
     }
 
     data[0] = goal & 0xff; // bottom 8 bits
     data[1] = goal >> 8;   // top 8 bits
-    
+
     // write the packet, return the error code
     _line.write(_ID, MX_REG_MOVING_SPEED, 2, data);
 }
 
-void MX::setCRSpeed(float speed) {
-    // bit 10     = direction, 0 = CCW, 1=CW
-    // bits 9-0   = Speed
-    char data[2];
+//void MX::setCRSpeed(float speed) {
+    //// bit 10     = direction, 0 = CCW, 1=CW
+    //// bits 9-0   = Speed
+    //char data[2];
 
-    int goal = (0x3ff * std::abs(speed));
+    //int goal = (0x3ff * std::abs(speed));
 
-    // Set direction CW if we have a negative speed
-    if (speed < 0) {
-        goal |= (0x1 << 10);
-    }
+    //// Set direction CW if we have a negative speed
+    //if (speed < 0) {
+        //goal |= (0x1 << 10);
+    //}
 
-    data[0] = goal & 0xff; // bottom 8 bits
-    data[1] = goal >> 8;   // top 8 bits
-    
-    // write the packet, return the error code
-    int rVal = _line.write( _ID, 0x20, 2, data);
-}
+    //data[0] = goal & 0xff; // bottom 8 bits
+    //data[1] = goal >> 8;   // top 8 bits
+
+    //// write the packet, return the error code
+    //int rVal = _line.write(_ID, 0x20, 2, data);
+//}
 
 float MX::getTemp(void) {
     char data[1];
-    int ErrorCode = _line.read( _ID, MX_REG_TEMP, 1, data);
+    int ErrorCode = _line.read(_ID, MX_REG_TEMP, 1, data);
     float temp = data[0];
-    return(temp);
+    return (temp);
 }