MPCNC/Firmware2
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added a m400, that finished all moves,

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and the mechanism so that if an endstop is hit it the ISR, the steps_to_be_taken are stored, and some current_block data that will be deleted in the next move
If the normal loop() then finds such an event, the position is calculated (floats would have taken too long in the ISR) A serial message is generated.
This commit is contained in:
Bernhard Kubicek 2011-11-13 19:58:09 +01:00
parent ff592b056a
commit 9980ceb4a3
4 changed files with 77 additions and 4 deletions
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2
Marlin/Marlin.h
View File

@ -6,6 +6,7 @@
#include <WProgram.h>
#include "fastio.h"
#include <avr/pgmspace.h>
#include "Configuration.h"
//#define SERIAL_ECHO(x) Serial << "echo: " << x;
//#define SERIAL_ECHOLN(x) Serial << "echo: "<<x<<endl;
@ -108,5 +109,6 @@ void enquecommand(const char *cmd); //put an ascii command at the end of the cur
extern float homing_feedrate[];
extern bool axis_relative_modes[];
extern float current_position[NUM_AXIS] ;
#endif

20
Marlin/Marlin.pde
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@ -39,7 +39,7 @@
#include "cardreader.h"
char version_string[] = "1.0.0 Alpha 1";
#define VERSION_STRING "1.0.0 Alpha 1"
@ -99,6 +99,7 @@ char version_string[] = "1.0.0 Alpha 1";
// M205 - advanced settings: minimum travel speed S=while printing T=travel only, B=minimum segment time X= maximum xy jerk, Z=maximum Z jerk
// M220 - set speed factor override percentage S:factor in percent
// M301 - Set PID parameters P I and D
// M400 - Finish all moves
// M500 - stores paramters in EEPROM
// M501 - reads parameters from EEPROM (if you need reset them after you changed them temporarily).
// M502 - reverts to the default "factory settings". You still need to store them in EEPROM afterwards if you want to.
@ -120,13 +121,14 @@ bool axis_relative_modes[] = AXIS_RELATIVE_MODES;
volatile int feedmultiply=100; //100->1 200->2
int saved_feedmultiply;
volatile bool feedmultiplychanged=false;
float current_position[NUM_AXIS] = { 0.0, 0.0, 0.0, 0.0};
//===========================================================================
//=============================private variables=============================
//===========================================================================
const char axis_codes[NUM_AXIS] = {'X', 'Y', 'Z', 'E'};
static float destination[NUM_AXIS] = { 0.0, 0.0, 0.0, 0.0};
static float current_position[NUM_AXIS] = { 0.0, 0.0, 0.0, 0.0};
static float offset[3] = {0.0, 0.0, 0.0};
static bool home_all_axis = true;
static float feedrate = 1500.0, next_feedrate, saved_feedrate;
@ -211,7 +213,7 @@ void setup()
{
Serial.begin(BAUDRATE);
SERIAL_ECHO_START;
SERIAL_ECHOLN(version_string);
SERIAL_ECHOLNPGM(VERSION_STRING);
SERIAL_PROTOCOLLNPGM("start");
SERIAL_ECHO_START;
SERIAL_ECHOPGM("Free Memory:");
@ -269,6 +271,7 @@ void loop()
//check heater every n milliseconds
manage_heater();
manage_inactivity(1);
checkHitEndstops();
LCD_STATUS;
}
@ -443,20 +446,25 @@ inline bool code_seen(char code)
destination[LETTER##_AXIS] = 1.5 * LETTER##_MAX_LENGTH * LETTER##_HOME_DIR; \
feedrate = homing_feedrate[LETTER##_AXIS]; \
prepare_move(); \
st_synchronize();\
\
current_position[LETTER##_AXIS] = 0;\
plan_set_position(current_position[X_AXIS], current_position[Y_AXIS], current_position[Z_AXIS], current_position[E_AXIS]);\
destination[LETTER##_AXIS] = -5 * LETTER##_HOME_DIR;\
prepare_move(); \
st_synchronize();\
\
destination[LETTER##_AXIS] = 10 * LETTER##_HOME_DIR;\
feedrate = homing_feedrate[LETTER##_AXIS]/2 ; \
prepare_move(); \
st_synchronize();\
\
current_position[LETTER##_AXIS] = (LETTER##_HOME_DIR == -1) ? 0 : LETTER##_MAX_LENGTH;\
plan_set_position(current_position[X_AXIS], current_position[Y_AXIS], current_position[Z_AXIS], current_position[E_AXIS]);\
destination[LETTER##_AXIS] = current_position[LETTER##_AXIS];\
feedrate = 0.0;\
st_synchronize();\
endstops_hit_on_purpose();\
}
inline void process_commands()
@ -522,6 +530,7 @@ inline void process_commands()
feedrate = saved_feedrate;
feedmultiply = saved_feedmultiply;
previous_millis_cmd = millis();
endstops_hit_on_purpose();
break;
case 90: // G90
relative_mode = false;
@ -909,6 +918,11 @@ inline void process_commands()
break;
#endif //PIDTEMP
case 400: // finish all moves
{
st_synchronize();
}
break;
case 500: // Store settings in EEPROM
{
StoreSettings();

52
Marlin/stepper.cpp
View File

@ -33,12 +33,14 @@
#include "speed_lookuptable.h"
//===========================================================================
//=============================public variables ============================
//===========================================================================
block_t *current_block; // A pointer to the block currently being traced
//===========================================================================
//=============================private variables ============================
//===========================================================================
@ -62,7 +64,9 @@ static long acceleration_time, deceleration_time;
static unsigned short acc_step_rate; // needed for deccelaration start point
static char step_loops;
volatile long endstops_trigsteps[3]={0,0,0};
volatile long endstops_stepsTotal,endstops_stepsDone;
static volatile bool endstops_hit=false;
// if DEBUG_STEPS is enabled, M114 can be used to compare two methods of determining the X,Y,Z position of the printer.
// for debugging purposes only, should be disabled by default
@ -152,9 +156,49 @@ asm volatile ( \
#define DISABLE_STEPPER_DRIVER_INTERRUPT() TIMSK1 &= ~(1<<OCIE1A)
void endstops_triggered(const unsigned long &stepstaken)
{
//this will only work if there is no bufferig
//however, if you perform a move at which the endstops should be triggered, and wait for it to complete, i.e. by blocking command, it should work
//yes, it uses floats, but: if endstops are triggered, thats hopefully not critical anymore anyways.
//endstops_triggerpos;
if(endstops_hit) //hitting a second time while the first hit is not reported
return;
if(current_block == NULL)
return;
endstops_stepsTotal=current_block->step_event_count;
endstops_stepsDone=stepstaken;
endstops_trigsteps[0]=current_block->steps_x;
endstops_trigsteps[1]=current_block->steps_y;
endstops_trigsteps[2]=current_block->steps_z;
endstops_hit=true;
}
void checkHitEndstops()
{
if( !endstops_hit)
return;
float endstops_triggerpos[3]={0,0,0};
float ratiodone=endstops_stepsDone/float(endstops_stepsTotal); //ratio of current_block thas was performed
endstops_triggerpos[0]=current_position[0]-(endstops_trigsteps[0]*ratiodone)/float(axis_steps_per_unit[0]);
endstops_triggerpos[1]=current_position[1]-(endstops_trigsteps[1]*ratiodone)/float(axis_steps_per_unit[1]);
endstops_triggerpos[2]=current_position[2]-(endstops_trigsteps[2]*ratiodone)/float(axis_steps_per_unit[2]);
SERIAL_ECHO_START;
SERIAL_ECHOPGM("endstops hit: ");
SERIAL_ECHOPAIR(" X:",endstops_triggerpos[0]);
SERIAL_ECHOPAIR(" Y:",endstops_triggerpos[1]);
SERIAL_ECHOPAIR(" Z:",endstops_triggerpos[2]);
SERIAL_ECHOLN("");
endstops_hit=false;
}
void endstops_hit_on_purpose()
{
endstops_hit=false;
}
// __________________________
// /| |\ _________________ ^
@ -296,6 +340,7 @@ ISR(TIMER1_COMPA_vect)
#endif
#if X_MIN_PIN > -1
if(READ(X_MIN_PIN) != ENDSTOPS_INVERTING) {
endstops_triggered(step_events_completed);
step_events_completed = current_block->step_event_count;
}
#endif
@ -307,6 +352,7 @@ ISR(TIMER1_COMPA_vect)
#endif
#if X_MAX_PIN > -1
if((READ(X_MAX_PIN) != ENDSTOPS_INVERTING) && (current_block->steps_x >0)){
endstops_triggered(step_events_completed);
step_events_completed = current_block->step_event_count;
}
#endif
@ -319,6 +365,7 @@ ISR(TIMER1_COMPA_vect)
#endif
#if Y_MIN_PIN > -1
if(READ(Y_MIN_PIN) != ENDSTOPS_INVERTING) {
endstops_triggered(step_events_completed);
step_events_completed = current_block->step_event_count;
}
#endif
@ -330,6 +377,7 @@ ISR(TIMER1_COMPA_vect)
#endif
#if Y_MAX_PIN > -1
if((READ(Y_MAX_PIN) != ENDSTOPS_INVERTING) && (current_block->steps_y >0)){
endstops_triggered(step_events_completed);
step_events_completed = current_block->step_event_count;
}
#endif
@ -342,6 +390,7 @@ ISR(TIMER1_COMPA_vect)
#endif
#if Z_MIN_PIN > -1
if(READ(Z_MIN_PIN) != ENDSTOPS_INVERTING) {
endstops_triggered(step_events_completed);
step_events_completed = current_block->step_event_count;
}
#endif
@ -353,6 +402,7 @@ ISR(TIMER1_COMPA_vect)
#endif
#if Z_MAX_PIN > -1
if((READ(Z_MAX_PIN) != ENDSTOPS_INVERTING) && (current_block->steps_z >0)){
endstops_triggered(step_events_completed);
step_events_completed = current_block->step_event_count;
}
#endif

7
Marlin/stepper.h
View File

@ -40,5 +40,12 @@ void st_wake_up();
extern volatile int count_direction[NUM_AXIS];
#endif
void checkHitEndstops(); //call from somwhere to create an serial error message with the locations the endstops where hit, in case they were triggered
void endstops_hit_on_purpose(); //avoid creation of the message, i.e. after homeing and before a routine call of checkHitEndstops();
extern block_t *current_block; // A pointer to the block currently being traced
#endif