Commit | Line | Data |
---|---|---|
ca037905 | 1 | /* |
58baeec1 MM |
2 | This file is part of Smoothie (http://smoothieware.org/). The motion control part is heavily based on Grbl (https://github.com/simen/grbl). |
3 | Smoothie 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. | |
4 | Smoothie 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. | |
5 | You should have received a copy of the GNU General Public License along with Smoothie. If not, see <http://www.gnu.org/licenses/>. | |
cd011f58 AW |
6 | */ |
7 | ||
4cff3ded AW |
8 | #include "libs/Module.h" |
9 | #include "libs/Kernel.h" | |
3fceb8eb | 10 | #include "modules/robot/Conveyor.h" |
4cff3ded AW |
11 | #include "modules/robot/Block.h" |
12 | #include "modules/tools/extruder/Extruder.h" | |
5dcb2ff3 | 13 | #include <mri.h> |
4cff3ded | 14 | |
43424972 JM |
15 | #define extruder_module_enable_checksum CHECKSUM("extruder_module_enable") |
16 | #define extruder_steps_per_mm_checksum CHECKSUM("extruder_steps_per_mm") | |
17 | #define extruder_acceleration_checksum CHECKSUM("extruder_acceleration") | |
18 | #define extruder_step_pin_checksum CHECKSUM("extruder_step_pin") | |
19 | #define extruder_dir_pin_checksum CHECKSUM("extruder_dir_pin") | |
20 | #define extruder_en_pin_checksum CHECKSUM("extruder_en_pin") | |
21 | #define extruder_max_speed_checksum CHECKSUM("extruder_max_speed") | |
22 | ||
23 | #define extruder_checksum CHECKSUM("extruder") | |
24 | ||
25 | #define default_feed_rate_checksum CHECKSUM("default_feed_rate") | |
26 | #define steps_per_mm_checksum CHECKSUM("steps_per_mm") | |
27 | #define acceleration_checksum CHECKSUM("acceleration") | |
28 | #define step_pin_checksum CHECKSUM("step_pin") | |
29 | #define dir_pin_checksum CHECKSUM("dir_pin") | |
30 | #define en_pin_checksum CHECKSUM("en_pin") | |
31 | #define max_speed_checksum CHECKSUM("max_speed") | |
32 | ||
41fd89e0 JM |
33 | #define max(a,b) (((a) > (b)) ? (a) : (b)) |
34 | ||
58baeec1 MM |
35 | /* The extruder module controls a filament extruder for 3D printing: http://en.wikipedia.org/wiki/Fused_deposition_modeling |
36 | * It can work in two modes : either the head does not move, and the extruder moves the filament at a specified speed ( SOLO mode here ) | |
37 | * or the head moves, and the extruder moves plastic at a speed proportional to the movement of the head ( FOLLOW mode here ). | |
4464301d AW |
38 | */ |
39 | ||
14ecdbd7 | 40 | Extruder::Extruder( uint16_t config_identifier ) { |
436a2cd1 | 41 | this->absolute_mode = true; |
14ecdbd7 AW |
42 | this->paused = false; |
43 | this->single_config = false; | |
44 | this->identifier = config_identifier; | |
436a2cd1 | 45 | } |
4cff3ded AW |
46 | |
47 | void Extruder::on_module_loaded() { | |
f5598f5b | 48 | |
4cff3ded | 49 | // Settings |
da24d6ae | 50 | this->on_config_reload(this); |
4cff3ded | 51 | |
4464301d | 52 | // We start with the enable pin off |
62bd4cfa | 53 | this->en_pin.set(1); |
5c07c6dc | 54 | |
4cff3ded | 55 | // We work on the same Block as Stepper, so we need to know when it gets a new one and drops one |
476dcb96 | 56 | register_for_event(ON_CONFIG_RELOAD); |
4cff3ded AW |
57 | this->register_for_event(ON_BLOCK_BEGIN); |
58 | this->register_for_event(ON_BLOCK_END); | |
6989211c | 59 | this->register_for_event(ON_GCODE_RECEIVED); |
436a2cd1 | 60 | this->register_for_event(ON_GCODE_EXECUTE); |
81b547a1 AW |
61 | this->register_for_event(ON_PLAY); |
62 | this->register_for_event(ON_PAUSE); | |
be8332cd | 63 | this->register_for_event(ON_SPEED_CHANGE); |
ca037905 | 64 | |
ded56b35 | 65 | // Start values |
4cff3ded AW |
66 | this->target_position = 0; |
67 | this->current_position = 0; | |
150bce10 | 68 | this->unstepped_distance = 0; |
4cff3ded | 69 | this->current_block = NULL; |
ded56b35 | 70 | this->mode = OFF; |
ca037905 | 71 | |
ded56b35 | 72 | // Update speed every *acceleration_ticks_per_second* |
7b49793d | 73 | // TODO: Make this an independent setting |
314ab8f7 | 74 | THEKERNEL->slow_ticker->attach( THEKERNEL->stepper->acceleration_ticks_per_second , this, &Extruder::acceleration_tick ); |
ded56b35 | 75 | |
be8332cd | 76 | // Stepper motor object for the extruder |
314ab8f7 | 77 | this->stepper_motor = THEKERNEL->step_ticker->add_stepper_motor( new StepperMotor(&step_pin, &dir_pin, &en_pin) ); |
58baeec1 | 78 | this->stepper_motor->attach(this, &Extruder::stepper_motor_finished_move ); |
3b1e82d2 | 79 | |
4cff3ded AW |
80 | } |
81 | ||
2bb8b390 | 82 | // Get config |
da24d6ae | 83 | void Extruder::on_config_reload(void* argument){ |
58baeec1 | 84 | |
14ecdbd7 | 85 | // If this module uses the old "single extruder" configuration style |
43424972 | 86 | if( this->single_config ){ |
14ecdbd7 | 87 | |
314ab8f7 MM |
88 | this->steps_per_millimeter = THEKERNEL->config->value(extruder_steps_per_mm_checksum )->by_default(1)->as_number(); |
89 | this->acceleration = THEKERNEL->config->value(extruder_acceleration_checksum )->by_default(1000)->as_number(); | |
90 | this->max_speed = THEKERNEL->config->value(extruder_max_speed_checksum )->by_default(1000)->as_number(); | |
91 | this->feed_rate = THEKERNEL->config->value(default_feed_rate_checksum )->by_default(1000)->as_number(); | |
14ecdbd7 | 92 | |
314ab8f7 MM |
93 | this->step_pin.from_string( THEKERNEL->config->value(extruder_step_pin_checksum )->by_default("nc" )->as_string())->as_output(); |
94 | this->dir_pin.from_string( THEKERNEL->config->value(extruder_dir_pin_checksum )->by_default("nc" )->as_string())->as_output(); | |
95 | this->en_pin.from_string( THEKERNEL->config->value(extruder_en_pin_checksum )->by_default("nc" )->as_string())->as_output(); | |
14ecdbd7 AW |
96 | |
97 | }else{ | |
98 | // If this module was created with the new multi extruder configuration style | |
99 | ||
314ab8f7 MM |
100 | this->steps_per_millimeter = THEKERNEL->config->value(extruder_checksum, this->identifier, steps_per_mm_checksum )->by_default(1)->as_number(); |
101 | this->acceleration = THEKERNEL->config->value(extruder_checksum, this->identifier, acceleration_checksum )->by_default(1000)->as_number(); | |
102 | this->max_speed = THEKERNEL->config->value(extruder_checksum, this->identifier, max_speed_checksum )->by_default(1000)->as_number(); | |
103 | this->feed_rate = THEKERNEL->config->value( default_feed_rate_checksum )->by_default(1000)->as_number(); | |
14ecdbd7 | 104 | |
314ab8f7 MM |
105 | this->step_pin.from_string( THEKERNEL->config->value(extruder_checksum, this->identifier, step_pin_checksum )->by_default("nc" )->as_string())->as_output(); |
106 | this->dir_pin.from_string( THEKERNEL->config->value(extruder_checksum, this->identifier, dir_pin_checksum )->by_default("nc" )->as_string())->as_output(); | |
107 | this->en_pin.from_string( THEKERNEL->config->value(extruder_checksum, this->identifier, en_pin_checksum )->by_default("nc" )->as_string())->as_output(); | |
14ecdbd7 AW |
108 | |
109 | } | |
110 | ||
111 | // disable by default | |
112 | this->en_pin.set(1); | |
58baeec1 | 113 | |
436a2cd1 AW |
114 | } |
115 | ||
81b547a1 AW |
116 | |
117 | // When the play/pause button is set to pause, or a module calls the ON_PAUSE event | |
118 | void Extruder::on_pause(void* argument){ | |
119 | this->paused = true; | |
83ecfc46 | 120 | this->stepper_motor->pause(); |
81b547a1 AW |
121 | } |
122 | ||
123 | // When the play/pause button is set to play, or a module calls the ON_PLAY event | |
124 | void Extruder::on_play(void* argument){ | |
125 | this->paused = false; | |
83ecfc46 | 126 | this->stepper_motor->unpause(); |
81b547a1 AW |
127 | } |
128 | ||
5dcb2ff3 AW |
129 | |
130 | void Extruder::on_gcode_received(void *argument){ | |
6989211c | 131 | Gcode *gcode = static_cast<Gcode*>(argument); |
5dcb2ff3 AW |
132 | |
133 | // Gcodes to execute immediately | |
3c4f2dd8 AW |
134 | if (gcode->has_m){ |
135 | if (gcode->m == 114){ | |
6989211c MM |
136 | gcode->stream->printf("E:%4.1f ", this->current_position); |
137 | gcode->add_nl = true; | |
74b6303c | 138 | gcode->mark_as_taken(); |
33e4cc02 JM |
139 | |
140 | }else if (gcode->m == 92 ){ | |
1ad23cd3 | 141 | float spm = this->steps_per_millimeter; |
7369629d MM |
142 | if (gcode->has_letter('E')) |
143 | spm = gcode->get_value('E'); | |
144 | gcode->stream->printf("E:%g ", spm); | |
145 | gcode->add_nl = true; | |
74b6303c | 146 | gcode->mark_as_taken(); |
33e4cc02 JM |
147 | |
148 | }else if (gcode->m == 500 || gcode->m == 503){// M500 saves some volatile settings to config override file, M503 just prints the settings | |
149 | gcode->stream->printf(";E Steps per mm:\nM92 E%1.4f\n", this->steps_per_millimeter); | |
150 | gcode->mark_as_taken(); | |
f2f0dfed | 151 | return; |
7369629d | 152 | } |
6989211c | 153 | } |
8519d744 | 154 | |
5dcb2ff3 | 155 | // Gcodes to pass along to on_gcode_execute |
cf6a3131 | 156 | if( ( gcode->has_m && (gcode->m == 17 || gcode->m == 18 || gcode->m == 82 || gcode->m == 83 || gcode->m == 84 || gcode->m == 92 ) ) || ( gcode->has_g && gcode->g == 92 && gcode->has_letter('E') ) || ( gcode->has_g && ( gcode->g == 90 || gcode->g == 91 ) ) ){ |
e0ee24ed | 157 | THEKERNEL->conveyor->append_gcode(gcode); |
3c4f2dd8 AW |
158 | } |
159 | ||
160 | // Add to the queue for on_gcode_execute to process | |
161 | if( gcode->has_g && gcode->g < 4 && gcode->has_letter('E') ){ | |
162 | if( !gcode->has_letter('X') && !gcode->has_letter('Y') && !gcode->has_letter('Z') ){ | |
163 | // This is a solo move, we add an empty block to the queue | |
164 | //If the queue is empty, execute immediatly, otherwise attach to the last added block | |
e0ee24ed MM |
165 | THEKERNEL->conveyor->append_gcode(gcode); |
166 | this->append_empty_block(); | |
3c4f2dd8 | 167 | } |
d149c730 AW |
168 | }else{ |
169 | // This is for follow move | |
170 | ||
3c4f2dd8 AW |
171 | } |
172 | } | |
173 | ||
174 | // Append an empty block in the queue so that solo mode can pick it up | |
41bbd0d3 | 175 | Block* Extruder::append_empty_block(){ |
314ab8f7 MM |
176 | THEKERNEL->conveyor->wait_for_queue(2); |
177 | Block* block = THEKERNEL->conveyor->new_block(); | |
1cf31736 | 178 | // block cleared in new_block and everything set to default values (usually 0) |
6bb45cd1 | 179 | |
3c4f2dd8 AW |
180 | // feed the block into the system. Will execute it if we are at the beginning of the queue |
181 | block->ready(); | |
41bbd0d3 MM |
182 | |
183 | return block; | |
6989211c | 184 | } |
81b547a1 | 185 | |
ded56b35 | 186 | // Compute extrusion speed based on parameters and gcode distance of travel |
436a2cd1 AW |
187 | void Extruder::on_gcode_execute(void* argument){ |
188 | Gcode* gcode = static_cast<Gcode*>(argument); | |
ca037905 | 189 | |
436a2cd1 | 190 | // Absolute/relative mode |
e6b5ae25 | 191 | if( gcode->has_m ){ |
cf6a3131 CG |
192 | if( gcode->m == 17 ){ this->en_pin.set(0); } |
193 | if( gcode->m == 18 ){ this->en_pin.set(1); } | |
e6b5ae25 AW |
194 | if( gcode->m == 82 ){ this->absolute_mode = true; } |
195 | if( gcode->m == 83 ){ this->absolute_mode = false; } | |
62bd4cfa | 196 | if( gcode->m == 84 ){ this->en_pin.set(1); } |
3c4f2dd8 AW |
197 | if (gcode->m == 92 ){ |
198 | if (gcode->has_letter('E')){ | |
0fb5b438 | 199 | this->steps_per_millimeter = gcode->get_value('E'); |
0fb5b438 | 200 | } |
0fb5b438 | 201 | } |
ca037905 MM |
202 | } |
203 | ||
204 | // The mode is OFF by default, and SOLO or FOLLOW only if we need to extrude | |
ded56b35 | 205 | this->mode = OFF; |
ca037905 | 206 | |
e6b5ae25 | 207 | if( gcode->has_g ){ |
7b49793d | 208 | // G92: Reset extruder position |
e6b5ae25 | 209 | if( gcode->g == 92 ){ |
74b6303c | 210 | gcode->mark_as_taken(); |
1a2d88eb | 211 | if( gcode->has_letter('E') ){ |
e2b4a32b | 212 | this->current_position = gcode->get_value('E'); |
1a2d88eb | 213 | this->target_position = this->current_position; |
150bce10 | 214 | this->unstepped_distance = 0; |
b2aa3a55 L |
215 | }else if( gcode->get_num_args() == 0){ |
216 | this->current_position = 0.0; | |
217 | this->target_position = this->current_position; | |
150bce10 | 218 | this->unstepped_distance = 0; |
ca037905 | 219 | } |
7dab41f3 | 220 | }else if ((gcode->g == 0) || (gcode->g == 1)){ |
ca037905 | 221 | // Extrusion length from 'G' Gcode |
1a2d88eb | 222 | if( gcode->has_letter('E' )){ |
ca037905 | 223 | // Get relative extrusion distance depending on mode ( in absolute mode we must substract target_position ) |
1ad23cd3 MM |
224 | float extrusion_distance = gcode->get_value('E'); |
225 | float relative_extrusion_distance = extrusion_distance; | |
f8dc0043 MM |
226 | if (this->absolute_mode) |
227 | { | |
228 | relative_extrusion_distance -= this->target_position; | |
229 | this->target_position = extrusion_distance; | |
230 | } | |
231 | else | |
232 | { | |
233 | this->target_position += relative_extrusion_distance; | |
234 | } | |
ca037905 | 235 | |
ded56b35 | 236 | // If the robot is moving, we follow it's movement, otherwise, we move alone |
7b49793d | 237 | if( fabs(gcode->millimeters_of_travel) < 0.0001 ){ // With floating numbers, we can have 0 != 0 ... beeeh. For more info see : http://upload.wikimedia.org/wikipedia/commons/0/0a/Cain_Henri_Vidal_Tuileries.jpg |
ded56b35 AW |
238 | this->mode = SOLO; |
239 | this->travel_distance = relative_extrusion_distance; | |
1a2d88eb | 240 | }else{ |
ca037905 | 241 | // We move proportionally to the robot's movement |
4464301d | 242 | this->mode = FOLLOW; |
ca037905 | 243 | this->travel_ratio = relative_extrusion_distance / gcode->millimeters_of_travel; |
7dab41f3 | 244 | // TODO: check resulting flowrate, limit robot speed if it exceeds max_speed |
ca037905 MM |
245 | } |
246 | ||
62bd4cfa | 247 | this->en_pin.set(0); |
ca037905 | 248 | } |
0049b2be MM |
249 | if (gcode->has_letter('F')) |
250 | { | |
251 | this->feed_rate = gcode->get_value('F'); | |
347854ff MM |
252 | if (this->feed_rate > (this->max_speed * THEKERNEL->robot->seconds_per_minute)) |
253 | this->feed_rate = this->max_speed * THEKERNEL->robot->seconds_per_minute; | |
254 | feed_rate /= THEKERNEL->robot->seconds_per_minute; | |
0049b2be | 255 | } |
2547cf48 AW |
256 | }else if( gcode->g == 90 ){ this->absolute_mode = true; |
257 | }else if( gcode->g == 91 ){ this->absolute_mode = false; | |
1a2d88eb | 258 | } |
ca037905 | 259 | } |
da24d6ae AW |
260 | } |
261 | ||
ded56b35 | 262 | // When a new block begins, either follow the robot, or step by ourselves ( or stay back and do nothing ) |
4cff3ded AW |
263 | void Extruder::on_block_begin(void* argument){ |
264 | Block* block = static_cast<Block*>(argument); | |
4464301d AW |
265 | |
266 | ||
ded56b35 AW |
267 | if( this->mode == SOLO ){ |
268 | // In solo mode we take the block so we can move even if the stepper has nothing to do | |
58baeec1 | 269 | |
99826186 | 270 | this->current_position += this->travel_distance ; |
58baeec1 | 271 | |
150bce10 | 272 | int steps_to_step = abs(int(floor(this->steps_per_millimeter * (this->travel_distance +this->unstepped_distance) ))); |
d0c14c30 | 273 | |
150bce10 MM |
274 | if ( this->travel_distance > 0 ){ |
275 | this->unstepped_distance += this->travel_distance -(steps_to_step/this->steps_per_millimeter); //catch any overflow | |
276 | } else { | |
277 | this->unstepped_distance += this->travel_distance +(steps_to_step/this->steps_per_millimeter); //catch any overflow | |
278 | } | |
4464301d AW |
279 | |
280 | if( steps_to_step != 0 ){ | |
58baeec1 | 281 | |
4464301d AW |
282 | // We take the block, we have to release it or everything gets stuck |
283 | block->take(); | |
284 | this->current_block = block; | |
58baeec1 | 285 | |
ca7f724e | 286 | this->stepper_motor->steps_per_second = 0; |
58baeec1 | 287 | this->stepper_motor->move( ( this->travel_distance > 0 ), steps_to_step); |
4464301d | 288 | |
d149c730 AW |
289 | }else{ |
290 | this->current_block = NULL; | |
4464301d AW |
291 | } |
292 | ||
ded56b35 | 293 | }else if( this->mode == FOLLOW ){ |
1a2d88eb | 294 | // In non-solo mode, we just follow the stepper module |
b5a9a6c4 | 295 | this->travel_distance = block->millimeters * this->travel_ratio; |
99826186 MM |
296 | |
297 | this->current_position += this->travel_distance; | |
298 | ||
150bce10 MM |
299 | int steps_to_step = abs(int(floor(this->steps_per_millimeter * (this->travel_distance + this->unstepped_distance) ))); |
300 | ||
301 | if ( this->travel_distance > 0 ){ | |
302 | this->unstepped_distance += this->travel_distance -(steps_to_step/this->steps_per_millimeter); //catch any overflow | |
303 | } else { | |
304 | this->unstepped_distance += this->travel_distance +(steps_to_step/this->steps_per_millimeter); //catch any overflow | |
305 | } | |
99826186 | 306 | |
58baeec1 | 307 | if( steps_to_step != 0 ){ |
4464301d | 308 | block->take(); |
b5a9a6c4 MM |
309 | this->current_block = block; |
310 | ||
311 | this->stepper_motor->move( ( this->travel_distance > 0 ), steps_to_step ); | |
d0c14c30 | 312 | this->on_speed_change(0); // initialise speed in case we get called first |
d149c730 AW |
313 | }else{ |
314 | this->current_block = NULL; | |
4464301d | 315 | } |
be8332cd AW |
316 | |
317 | }else if( this->mode == OFF ){ | |
318 | // No movement means we must reset our speed | |
d149c730 | 319 | this->current_block = NULL; |
4464301d | 320 | //this->stepper_motor->set_speed(0); |
58baeec1 | 321 | |
ca037905 | 322 | } |
e2b4a32b | 323 | |
4cff3ded AW |
324 | } |
325 | ||
ded56b35 | 326 | // When a block ends, pause the stepping interrupt |
4cff3ded | 327 | void Extruder::on_block_end(void* argument){ |
ca037905 MM |
328 | this->current_block = NULL; |
329 | } | |
4cff3ded | 330 | |
ded56b35 | 331 | // Called periodically to change the speed to match acceleration or to match the speed of the robot |
8b8b3339 | 332 | uint32_t Extruder::acceleration_tick(uint32_t dummy){ |
1a2d88eb | 333 | |
ca037905 | 334 | // Avoid trying to work when we really shouldn't ( between blocks or re-entry ) |
be8332cd AW |
335 | if( this->current_block == NULL || this->paused || this->mode != SOLO ){ return 0; } |
336 | ||
337 | uint32_t current_rate = this->stepper_motor->steps_per_second; | |
99826186 | 338 | uint32_t target_rate = int(floor(this->feed_rate * this->steps_per_millimeter)); |
58baeec1 | 339 | |
4464301d | 340 | if( current_rate < target_rate ){ |
314ab8f7 | 341 | uint32_t rate_increase = int(floor((this->acceleration/THEKERNEL->stepper->acceleration_ticks_per_second)*this->steps_per_millimeter)); |
4464301d | 342 | current_rate = min( target_rate, current_rate + rate_increase ); |
0eb11a06 | 343 | } |
4464301d | 344 | if( current_rate > target_rate ){ current_rate = target_rate; } |
1a2d88eb | 345 | |
8519d744 | 346 | // steps per second |
314ab8f7 | 347 | this->stepper_motor->set_speed(max(current_rate, THEKERNEL->stepper->minimum_steps_per_minute/60)); |
58baeec1 | 348 | |
be8332cd | 349 | return 0; |
ded56b35 | 350 | } |
1a2d88eb | 351 | |
be8332cd AW |
352 | // Speed has been updated for the robot's stepper, we must update accordingly |
353 | void Extruder::on_speed_change( void* argument ){ | |
ca037905 | 354 | |
be8332cd | 355 | // Avoid trying to work when we really shouldn't ( between blocks or re-entry ) |
4464301d AW |
356 | if( this->current_block == NULL || this->paused || this->mode != FOLLOW || this->stepper_motor->moving != true ){ return; } |
357 | ||
358 | /* | |
58baeec1 MM |
359 | * nominal block duration = current block's steps / ( current block's nominal rate / 60 ) |
360 | * nominal extruder rate = extruder steps / nominal block duration | |
361 | * actual extruder rate = nominal extruder rate * ( ( stepper's steps per minute / 60 ) / ( current block's nominal rate / 60 ) ) | |
362 | * or actual extruder rate = ( ( extruder steps * ( current block's nominal_rate / 60 ) ) / current block's steps ) * ( ( stepper's steps per minute / 60 ) / ( current block's nominal rate / 60 ) ) | |
363 | * or simplified : extruder steps * ( stepper's steps per minute / 60 ) ) / current block's steps | |
364 | * or even : ( stepper steps per minute / 60 ) * ( extruder steps / current block's steps ) | |
4464301d | 365 | */ |
58baeec1 | 366 | |
1ad23cd3 | 367 | this->stepper_motor->set_speed( max( ( THEKERNEL->stepper->trapezoid_adjusted_rate /60.0) * ( (float)this->stepper_motor->steps_to_move / (float)this->current_block->steps_event_count ), THEKERNEL->stepper->minimum_steps_per_minute/60.0 ) ); |
ca037905 | 368 | |
4cff3ded AW |
369 | } |
370 | ||
4cff3ded AW |
371 | |
372 | ||
be8332cd AW |
373 | // When the stepper has finished it's move |
374 | uint32_t Extruder::stepper_motor_finished_move(uint32_t dummy){ | |
4cff3ded | 375 | |
4464301d AW |
376 | //printf("extruder releasing\r\n"); |
377 | ||
d149c730 | 378 | if (this->current_block){ // this should always be true, but sometimes it isn't. TODO: find out why |
8519d744 | 379 | Block* block = this->current_block; |
d149c730 AW |
380 | this->current_block = NULL; |
381 | block->release(); | |
8519d744 | 382 | } |
f2203544 | 383 | return 0; |
feb204be | 384 | |
be8332cd | 385 | } |
feb204be | 386 |