Hanbin Ying / Stepper_Motor_X27168

With more robust driving method and calibration routine

Dependents:   Stepper_Motor_Demo Stepper_Motor_Demo_final

Fork of Stepper_Motor_X27168 by Stepper Motor

Files at this revision

API Documentation at this revision

Revision 1:406a6e6c4bd7, committed 2016-03-16

Comitter:
yhbyhb4433
Date:
Wed Mar 16 18:03:32 2016 +0000
Parent:
0:c346170974bc
Commit message:
Improve driving method and add calibration routine

Changed in this revision

StepperMotor_X27168.h Show annotated file Show diff for this revision Revisions of this file
Stepper_Motor_X27168.cpp Show annotated file Show diff for this revision Revisions of this file 
diff -r c346170974bc -r 406a6e6c4bd7 StepperMotor_X27168.h
--- a/StepperMotor_X27168.h	Tue Oct 20 00:36:06 2015 +0000
+++ b/StepperMotor_X27168.h	Wed Mar 16 18:03:32 2016 +0000
@@ -127,6 +127,10 @@
      */
     void angle_position(float angle);
     
+    /** Initialize the motor by rotating CW for full range and CCW for full range
+     */
+    void init();
+    
 private:
     BusOut motor_control;       // 4-bit Bus Controlling the H-Brigde
     int max_position;           // Software Limit to motor rotation

diff -r c346170974bc -r 406a6e6c4bd7 Stepper_Motor_X27168.cpp
--- a/Stepper_Motor_X27168.cpp	Tue Oct 20 00:36:06 2015 +0000
+++ b/Stepper_Motor_X27168.cpp	Wed Mar 16 18:03:32 2016 +0000
@@ -56,18 +56,18 @@
     else
         return -1;
         
-    switch (cur_state) {
+    switch (cur_state) { //improve 2 phase drive method. Original method commented out
         case 0:
-            motor_control = 0x1;
+            motor_control = 0x9;//0x1;
             break;
         case 1:
-            motor_control = 0x4;
+            motor_control = 0x5;//0x4;
             break;
         case 2:
-            motor_control = 0x2;
+            motor_control = 0x6;//0x2;
             break;
         case 3:
-            motor_control = 0x8;
+            motor_control = 0xA;//0x8;
             break;
         case 4:
             motor_control = 0x0;
@@ -95,4 +95,15 @@
 
 void StepperMotor_X27168::angle_position(float angle) {
     step_position(int(angle*2));
+}
+
+void StepperMotor_X27168::init()
+{
+    set_speed(400); //if too fast(>400) the motor will slip and go weird
+
+    step_position(MAX_POS); //sweep to MAX position
+    wait(0.5);
+
+    step_position(0); //sweep to zero position
+    wait(0.5);
 }
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