Diff: LaosMotion/LaosMotion.cpp

Revision:

0:3852426a5068

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/LaosMotion/LaosMotion.cpp	Fri Jun 08 09:26:40 2012 +0000
@@ -0,0 +1,431 @@
+/**
+ * LaosMotion.cpp
+ * Motion Controll functions for Laos system
+ *
+ * Copyright (c) 2011 Peter Brier
+ *
+ *   This file is part of the LaOS project (see: http://laoslaser.org)
+ *spe
+ *   LaOS is free software: you can redistribute it and/or modify
+ *   it under the terms of the GNU General Public License as published by
+ *   the Free Software Foundation, either version 3 of the License, or
+ *   (at your option) any later version.
+ *
+ *   LaOS is distributed in the hope that it will be useful,
+ *   but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *   GNU General Public License for more details.
+ *
+ *   You should have received a copy of the GNU General Public License
+ *   along with LaOS.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ * 
+ *
+ */
+#include "global.h"
+#include "LaosMotion.h"
+#include  "planner.h"
+#include  "stepper.h"
+#include  "pins.h"
+
+// #define DO_MOTION_TEST 1
+
+// status leds
+extern DigitalOut led1,led2,led3,led4;
+
+// Inputs;
+DigitalIn xhome(p8);
+DigitalIn yhome(p17);
+DigitalIn zmin(p15);
+DigitalIn zmax(p16);
+
+// motors
+DigitalOut enable(p7);
+DigitalOut xdir(p23);
+DigitalOut xstep(p24);
+DigitalOut ydir(p25);
+DigitalOut ystep(p26);
+DigitalOut zdir(p27);
+DigitalOut zstep(p28);
+DigitalOut estep(p29); // NOK: CAN, (TODO)
+DigitalOut edir(p30);  // NOK: CAN, (TODO)
+
+
+// laser
+PwmOut pwm(p22);                // O1: PWM (Yellow)
+DigitalOut laser_enable(p21);   // O2: enable laser
+DigitalOut o3(p6);              // 03: NC
+DigitalOut laser(p5);           // O4: (p5) LaserON (White)
+
+// Analog in/out (cover sensor) + NC
+DigitalIn cover(p19);
+
+  
+// globals
+int step=0, command=0;
+int mark_speed = 100; // 100 [mm/sec] 
+
+// next planner action to enqueue
+tActionRequest  action; 
+
+// position offsets
+static int ofsx=0, ofsy=0, ofsz=0;
+
+// Command interpreter
+int param=0, val=0;
+
+// Bitmap buffer
+#define BITMAP_PIXELS  (8192)
+#define BITMAP_SIZE (BITMAP_PIXELS/32)
+unsigned long bitmap[BITMAP_SIZE];
+unsigned long bitmap_width=0; // nr of pixels
+unsigned long bitmap_size=0; // nr of bytes 
+unsigned char bitmap_bpp=1, bitmap_enable=0;
+
+/**
+*** LaosMotion() Constructor
+*** Make new motion object
+**/
+LaosMotion::LaosMotion()
+{
+#if DO_MOTION_TEST
+  tActionRequest act[2];
+  int i=0;
+  Timer t;
+#endif
+  pwm.period(1.0 / cfg->pwmfreq);
+  pwm = cfg->pwmmin/100.0;
+
+  mark_speed = cfg->speed;
+  //start.mode(PullUp);
+  xhome.mode(PullUp);
+  yhome.mode(PullUp);
+  isHome = false;
+  plan_init();
+  st_init();  
+  reset();
+  mark_speed = cfg->speed;
+  action.param = 0;
+  action.target.x = action.target.y = action.target.z = action.target.e =0;
+  action.target.feed_rate = 60*mark_speed;
+
+#if DO_MOTION_TEST
+  t.start();
+  act[0].ActionType = act[1].ActionType =  AT_MOVE;
+  act[0].target.feed_rate = 60 * 100;
+  act[1].target.feed_rate = 60 * 200;
+  act[0].target.x = act[0].target.y = act[0].target.z = act[0].target.e = 0;
+  act[1].target.x = act[1].target.y = act[1].target.z = act[1].target.e = 100;
+  act[1].target.y = 200;
+  while(1)
+  {
+    while( plan_queue_full() ) led3 = !led3;
+    led1 = 1;
+    i++;
+    if ( i )
+      printf("%d PING...\n", t.read_ms());
+    else
+      printf("%d PONG...\n", t.read_ms());
+    if ( i > 1 || i<0) i = 0;
+    plan_buffer_line (&act[i]);
+    led1 = 0;
+  }
+#endif
+  
+}
+
+
+/**
+***Destructor
+**/
+LaosMotion::~LaosMotion()
+{
+
+}
+
+
+/**
+*** reset()
+*** reset the state
+**/
+void LaosMotion::reset()
+{
+  step = command = xstep = xdir = ystep = ydir = zstep = zdir = 0;
+  ofsx = ofsy = ofsz = 0;
+  laser = LASEROFF;
+  enable = cfg->enable;
+  cover.mode(PullUp);
+}
+
+
+
+/**
+*** ready()
+*** ready to receive new commands 
+**/
+int LaosMotion::ready()
+{
+  return !plan_queue_full();
+}
+
+
+/**
+*** queue()
+*** return nr of items in the queue (0 is empty)
+**/
+int LaosMotion::queue()
+{
+  return plan_queue_items();
+}
+
+
+
+
+/** 
+*** MoveTo()
+**/
+void LaosMotion::moveTo(int x, int y, int z)
+{
+   action.target.x = ofsx + x/1000.0;
+   action.target.y = ofsy + y/1000.0;
+   action.target.z = ofsz + z/1000.0;
+   action.ActionType = AT_MOVE;
+   action.target.feed_rate =  60.0 * cfg->speed;
+   plan_buffer_line(&action);
+  // printf("To buffer: %d, %d\n", x, y);
+}
+
+/** 
+*** MoveTo() width specific speed (%)
+**/
+void LaosMotion::moveTo(int x, int y, int z, int speed)
+{
+   action.target.x = ofsx + x/1000.0;
+   action.target.y = ofsy + y/1000.0;
+   action.target.z = ofsz + z/1000.0;
+   action.ActionType = AT_MOVE;
+   action.target.feed_rate =  (speed * 60.0 * cfg->speed) / 100;
+   plan_buffer_line(&action);
+   //printf("To buffer: %d, %d\n", x, y);
+}
+
+/**
+*** write()
+*** Write command and parameters to motion controller 
+**/
+void LaosMotion::write(int i)
+{
+  static int x,y,z,power=10000;
+  //if (  plan_queue_empty() ) 
+  //printf("Empty\n");
+  if ( step == 0 )
+  {
+    command = i;
+    step++;
+  }
+  else
+  { 
+     switch( command )
+     {
+          case 0: // move x,y (laser off) 
+          case 1: // line x,y (laser on)
+            switch ( step )
+            {
+              case 1:
+                action.target.x = i/1000.0; 
+                break;
+              case 2: 
+                action.target.y = i/1000.0;;
+                step=0;
+                action.param = power;
+                action.ActionType =  (command ? AT_LASER : AT_MOVE);
+                if ( bitmap_enable && action.ActionType == AT_LASER) 
+                { 
+                  action.ActionType = AT_BITMAP;                 
+                  bitmap_enable = 0;
+                }
+                action.target.feed_rate =  60.0 * (command ? mark_speed : cfg->speed );
+                plan_buffer_line(&action);
+                break;
+            } 
+            break;
+          case 2: // move z 
+            switch(step)
+            {
+              case 1: 
+                z = i; 
+                step = 0; 
+                break;
+            }
+         case 4: // set x,y,z (absolute)
+           switch ( step )
+            {
+              case 1: 
+                x = i; 
+                break;
+              case 2: 
+                y = i; 
+                break;
+              case 3: 
+                z = i;
+                setPosition(x,y,z); 
+                step=0; 
+                break;
+            }
+         case 5: // nop
+           step = 0;
+           break;
+         case 7: // set index,value
+            switch ( step )
+            {
+              case 1: 
+                param = i; 
+                break;
+              case 2: val = i; step = 0; 
+              switch( param )
+              {
+                case 100: 
+                  if ( val < 1 ) val = 1;
+                  if ( val > 9999 ) val = 10000; 
+                  mark_speed = val * cfg->speed / 10000; 
+                  break;  
+                case 101: 
+                  power = val;
+                  printf("power: %d\n", power); 
+                  step=0; 
+                  break;                  
+              }
+              break;
+            }
+         case 9: // Store bitmap mark data format: 9 <bpp> <width> <data-0> <data-1> ... <data-n>
+            if ( step == 1 ) 
+            {
+              bitmap_bpp = i;
+            }        
+            else if ( step == 2 )
+            {
+              if ( queue() ) printf("Queue not empty... wait...\n\r");
+              while ( queue() );// printf("+"); // wait for queue to empty 
+              bitmap_width = i;
+              bitmap_enable = 1;
+              bitmap_size = (bitmap_bpp * bitmap_width) / 32;
+              if  ( (bitmap_bpp * bitmap_width) % 32 )  // padd to next 32-bit 
+                bitmap_size++; 
+              printf("\n\rBitmap: read %d dwords\n\r", bitmap_size);
+
+            }
+            else // copy data
+            {
+              if ( step-2 == bitmap_size )
+              {
+                step = 0;
+                printf("Bitmap: received %d dwords\n\r", bitmap_size);
+              }
+              bitmap[ (step-3) % BITMAP_SIZE ] = i;
+            }
+           break; 
+         default: // I do not understand: stop motion
+            step = 0;
+          break;
+    }
+    if ( step ) step++;
+  } 
+}
+
+
+/**
+*** Return true if start button is pressed
+**/
+bool LaosMotion::isStart()
+{
+  return cover;
+}
+
+
+/**
+*** Hard set the absolute position
+*** Warning: only call when the motion is not busy!
+**/
+void LaosMotion::setPosition(int x, int y, int z)
+{
+  plan_set_current_position_xyz(x/1000.0,y/1000.0,z/1000.0);
+  ofsx = ofsy = ofsz = 0;
+}
+
+/**
+*** get the absolute position
+**/
+void LaosMotion::getPosition(int *x, int *y, int *z)
+{
+  float xx,yy,zz;
+  plan_get_current_position_xyz(&xx, &yy, &zz);
+  *x = xx * 1000;
+  *y = yy * 1000;
+  *z = zz * 1000;
+}
+
+
+
+/**
+*** set the origin to this absolute position
+*** set to (0,0,0) to reset the orgin back to its original position. 
+*** Note: Make sure you only call this at stand-still (motion queue is empty), otherwise strange things may happen
+**/
+void LaosMotion::setOrigin(int x, int y, int z)
+{
+  ofsx = x; 
+  ofsy = y;
+  ofsz = z;
+}
+
+
+
+
+/**
+*** Home the axis, stop when both home switches are pressed
+**/
+void LaosMotion::home(int x, int y, int z)
+{
+  int i=0;
+  printf("Homing %d,%d, %d with speed %d\n", x, y, z, cfg->homespeed);
+  xdir = cfg->xhomedir;
+  ydir = cfg->yhomedir;
+  zdir = cfg->zhomedir;
+  led1 = 0;
+  isHome = false;
+  printf("Home Z...\n\r");
+  if (cfg->autozhome) {
+    while ((zmin ^ cfg->zpol) && (zmax ^ cfg->zpol)) {
+        zstep = 0;
+        wait(cfg->homespeed/1E6);
+        zstep = 1;
+        wait(cfg->homespeed/1E6);
+    }
+  }
+  printf("Home XY...\n\r");
+  while ( 1 )
+  {
+    xstep = ystep = 0;
+    wait(cfg->homespeed/1E6);  
+    xstep = xhome ^ cfg->xpol;
+    ystep = yhome ^ cfg->ypol;
+    wait(cfg->homespeed/1E6);
+    
+    led2 = !xhome;
+    led3 = !yhome;
+    led4 = ((i++) & 0x10000);
+    if ( !(xhome ^ cfg->xpol) && !(yhome ^ cfg->ypol) ) 
+    {
+      setPosition(x,y,z);
+      moveTo(x,y,z);
+      isHome = true;
+      printf("Home done.\n\r");
+      return;
+    }
+  }
+ 
+}
+
+
+
+