Commit | Line | Data |
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df27a6a3 | 1 | /* |
aab6cbba | 2 | This file is part of Smoothie (http://smoothieware.org/). The motion control part is heavily based on Grbl (https://github.com/simen/grbl) with additions from Sungeun K. Jeon (https://github.com/chamnit/grbl) |
4cff3ded AW |
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. | |
df27a6a3 | 5 | You should have received a copy of the GNU General Public License along with Smoothie. If not, see <http://www.gnu.org/licenses/>. |
4cff3ded AW |
6 | */ |
7 | ||
8 | #include "libs/Module.h" | |
9 | #include "libs/Kernel.h" | |
5673fe39 | 10 | |
c3df978d JM |
11 | #include "mbed.h" // for us_ticker_read() |
12 | ||
5673fe39 | 13 | #include <math.h> |
4cff3ded AW |
14 | #include <string> |
15 | using std::string; | |
5673fe39 | 16 | |
4cff3ded | 17 | #include "Planner.h" |
3fceb8eb | 18 | #include "Conveyor.h" |
4cff3ded | 19 | #include "Robot.h" |
5673fe39 MM |
20 | #include "nuts_bolts.h" |
21 | #include "Pin.h" | |
22 | #include "StepperMotor.h" | |
23 | #include "Gcode.h" | |
5647f709 | 24 | #include "PublicDataRequest.h" |
928467c0 | 25 | #include "PublicData.h" |
4cff3ded AW |
26 | #include "arm_solutions/BaseSolution.h" |
27 | #include "arm_solutions/CartesianSolution.h" | |
c41d6d95 | 28 | #include "arm_solutions/RotatableCartesianSolution.h" |
2a06c415 | 29 | #include "arm_solutions/LinearDeltaSolution.h" |
c52b8675 | 30 | #include "arm_solutions/RotatableDeltaSolution.h" |
bdaaa75d | 31 | #include "arm_solutions/HBotSolution.h" |
fff1e42d | 32 | #include "arm_solutions/CoreXZSolution.h" |
1217e470 | 33 | #include "arm_solutions/MorganSCARASolution.h" |
61134a65 | 34 | #include "StepTicker.h" |
7af0714f JM |
35 | #include "checksumm.h" |
36 | #include "utils.h" | |
8d54c34c | 37 | #include "ConfigValue.h" |
5966b7d0 | 38 | #include "libs/StreamOutput.h" |
dd0a7cfa | 39 | #include "StreamOutputPool.h" |
928467c0 | 40 | #include "ExtruderPublicAccess.h" |
38bf9a1c | 41 | |
78d0e16a MM |
42 | #define default_seek_rate_checksum CHECKSUM("default_seek_rate") |
43 | #define default_feed_rate_checksum CHECKSUM("default_feed_rate") | |
44 | #define mm_per_line_segment_checksum CHECKSUM("mm_per_line_segment") | |
45 | #define delta_segments_per_second_checksum CHECKSUM("delta_segments_per_second") | |
46 | #define mm_per_arc_segment_checksum CHECKSUM("mm_per_arc_segment") | |
47 | #define arc_correction_checksum CHECKSUM("arc_correction") | |
48 | #define x_axis_max_speed_checksum CHECKSUM("x_axis_max_speed") | |
49 | #define y_axis_max_speed_checksum CHECKSUM("y_axis_max_speed") | |
50 | #define z_axis_max_speed_checksum CHECKSUM("z_axis_max_speed") | |
43424972 JM |
51 | |
52 | // arm solutions | |
78d0e16a MM |
53 | #define arm_solution_checksum CHECKSUM("arm_solution") |
54 | #define cartesian_checksum CHECKSUM("cartesian") | |
55 | #define rotatable_cartesian_checksum CHECKSUM("rotatable_cartesian") | |
56 | #define rostock_checksum CHECKSUM("rostock") | |
2a06c415 | 57 | #define linear_delta_checksum CHECKSUM("linear_delta") |
c52b8675 | 58 | #define rotatable_delta_checksum CHECKSUM("rotatable_delta") |
78d0e16a MM |
59 | #define delta_checksum CHECKSUM("delta") |
60 | #define hbot_checksum CHECKSUM("hbot") | |
61 | #define corexy_checksum CHECKSUM("corexy") | |
fff1e42d | 62 | #define corexz_checksum CHECKSUM("corexz") |
78d0e16a | 63 | #define kossel_checksum CHECKSUM("kossel") |
1217e470 | 64 | #define morgan_checksum CHECKSUM("morgan") |
78d0e16a | 65 | |
78d0e16a MM |
66 | // new-style actuator stuff |
67 | #define actuator_checksum CHEKCSUM("actuator") | |
68 | ||
69 | #define step_pin_checksum CHECKSUM("step_pin") | |
70 | #define dir_pin_checksum CHEKCSUM("dir_pin") | |
71 | #define en_pin_checksum CHECKSUM("en_pin") | |
72 | ||
73 | #define steps_per_mm_checksum CHECKSUM("steps_per_mm") | |
df6a30f2 | 74 | #define max_rate_checksum CHECKSUM("max_rate") |
78d0e16a MM |
75 | |
76 | #define alpha_checksum CHECKSUM("alpha") | |
77 | #define beta_checksum CHECKSUM("beta") | |
78 | #define gamma_checksum CHECKSUM("gamma") | |
79 | ||
38bf9a1c JM |
80 | #define NEXT_ACTION_DEFAULT 0 |
81 | #define NEXT_ACTION_DWELL 1 | |
82 | #define NEXT_ACTION_GO_HOME 2 | |
83 | ||
84 | #define MOTION_MODE_SEEK 0 // G0 | |
85 | #define MOTION_MODE_LINEAR 1 // G1 | |
86 | #define MOTION_MODE_CW_ARC 2 // G2 | |
87 | #define MOTION_MODE_CCW_ARC 3 // G3 | |
88 | #define MOTION_MODE_CANCEL 4 // G80 | |
89 | ||
90 | #define PATH_CONTROL_MODE_EXACT_PATH 0 | |
91 | #define PATH_CONTROL_MODE_EXACT_STOP 1 | |
92 | #define PATH_CONTROL_MODE_CONTINOUS 2 | |
93 | ||
94 | #define PROGRAM_FLOW_RUNNING 0 | |
95 | #define PROGRAM_FLOW_PAUSED 1 | |
96 | #define PROGRAM_FLOW_COMPLETED 2 | |
97 | ||
98 | #define SPINDLE_DIRECTION_CW 0 | |
99 | #define SPINDLE_DIRECTION_CCW 1 | |
100 | ||
5fa0c173 PA |
101 | #define ARC_ANGULAR_TRAVEL_EPSILON 5E-7 // Float (radians) |
102 | ||
edac9072 AW |
103 | // The Robot converts GCodes into actual movements, and then adds them to the Planner, which passes them to the Conveyor so they can be added to the queue |
104 | // It takes care of cutting arcs into segments, same thing for line that are too long | |
105 | ||
4710532a JM |
106 | Robot::Robot() |
107 | { | |
a1b7e9f0 | 108 | this->inch_mode = false; |
0e8b102e | 109 | this->absolute_mode = true; |
df27a6a3 | 110 | this->motion_mode = MOTION_MODE_SEEK; |
4cff3ded | 111 | this->select_plane(X_AXIS, Y_AXIS, Z_AXIS); |
df27a6a3 | 112 | clear_vector(this->last_milestone); |
3632a517 | 113 | clear_vector(this->transformed_last_milestone); |
0b804a41 | 114 | this->arm_solution = NULL; |
da947c62 | 115 | seconds_per_minute = 60.0F; |
fae93525 | 116 | this->clearToolOffset(); |
3632a517 | 117 | this->compensationTransform= nullptr; |
807b9b57 JM |
118 | this->wcs_offsets.fill(wcs_t(0.0F,0.0F,0.0F)); |
119 | this->g92_offset= wcs_t(0.0F,0.0F,0.0F); | |
4cff3ded AW |
120 | } |
121 | ||
122 | //Called when the module has just been loaded | |
4710532a JM |
123 | void Robot::on_module_loaded() |
124 | { | |
4cff3ded AW |
125 | this->register_for_event(ON_GCODE_RECEIVED); |
126 | ||
127 | // Configuration | |
807b9b57 | 128 | this->load_config(); |
da24d6ae AW |
129 | } |
130 | ||
807b9b57 JM |
131 | #define ACTUATOR_CHECKSUMS(X) { \ |
132 | CHECKSUM(X "_step_pin"), \ | |
133 | CHECKSUM(X "_dir_pin"), \ | |
134 | CHECKSUM(X "_en_pin"), \ | |
135 | CHECKSUM(X "_steps_per_mm"), \ | |
136 | CHECKSUM(X "_max_rate") \ | |
137 | } | |
5984acdf | 138 | |
807b9b57 JM |
139 | void Robot::load_config() |
140 | { | |
edac9072 AW |
141 | // Arm solutions are used to convert positions in millimeters into position in steps for each stepper motor. |
142 | // While for a cartesian arm solution, this is a simple multiplication, in other, less simple cases, there is some serious math to be done. | |
143 | // To make adding those solution easier, they have their own, separate object. | |
5984acdf | 144 | // Here we read the config to find out which arm solution to use |
0b804a41 | 145 | if (this->arm_solution) delete this->arm_solution; |
eda9facc | 146 | int solution_checksum = get_checksum(THEKERNEL->config->value(arm_solution_checksum)->by_default("cartesian")->as_string()); |
d149c730 | 147 | // Note checksums are not const expressions when in debug mode, so don't use switch |
98761c28 | 148 | if(solution_checksum == hbot_checksum || solution_checksum == corexy_checksum) { |
314ab8f7 | 149 | this->arm_solution = new HBotSolution(THEKERNEL->config); |
bdaaa75d | 150 | |
fff1e42d JJ |
151 | } else if(solution_checksum == corexz_checksum) { |
152 | this->arm_solution = new CoreXZSolution(THEKERNEL->config); | |
153 | ||
2a06c415 JM |
154 | } else if(solution_checksum == rostock_checksum || solution_checksum == kossel_checksum || solution_checksum == delta_checksum || solution_checksum == linear_delta_checksum) { |
155 | this->arm_solution = new LinearDeltaSolution(THEKERNEL->config); | |
73a4e3c0 | 156 | |
4710532a | 157 | } else if(solution_checksum == rotatable_cartesian_checksum) { |
314ab8f7 | 158 | this->arm_solution = new RotatableCartesianSolution(THEKERNEL->config); |
b73a756d | 159 | |
c52b8675 DP |
160 | } else if(solution_checksum == rotatable_delta_checksum) { |
161 | this->arm_solution = new RotatableDeltaSolution(THEKERNEL->config); | |
162 | ||
1217e470 QH |
163 | } else if(solution_checksum == morgan_checksum) { |
164 | this->arm_solution = new MorganSCARASolution(THEKERNEL->config); | |
165 | ||
4710532a | 166 | } else if(solution_checksum == cartesian_checksum) { |
314ab8f7 | 167 | this->arm_solution = new CartesianSolution(THEKERNEL->config); |
73a4e3c0 | 168 | |
4710532a | 169 | } else { |
314ab8f7 | 170 | this->arm_solution = new CartesianSolution(THEKERNEL->config); |
d149c730 | 171 | } |
73a4e3c0 | 172 | |
6b661ab3 DP |
173 | this->feed_rate = THEKERNEL->config->value(default_feed_rate_checksum )->by_default( 100.0F)->as_number(); |
174 | this->seek_rate = THEKERNEL->config->value(default_seek_rate_checksum )->by_default( 100.0F)->as_number(); | |
175 | this->mm_per_line_segment = THEKERNEL->config->value(mm_per_line_segment_checksum )->by_default( 0.0F)->as_number(); | |
176 | this->delta_segments_per_second = THEKERNEL->config->value(delta_segments_per_second_checksum )->by_default(0.0f )->as_number(); | |
177 | this->mm_per_arc_segment = THEKERNEL->config->value(mm_per_arc_segment_checksum )->by_default( 0.5f)->as_number(); | |
178 | this->arc_correction = THEKERNEL->config->value(arc_correction_checksum )->by_default( 5 )->as_number(); | |
78d0e16a | 179 | |
6b661ab3 DP |
180 | this->max_speeds[X_AXIS] = THEKERNEL->config->value(x_axis_max_speed_checksum )->by_default(60000.0F)->as_number() / 60.0F; |
181 | this->max_speeds[Y_AXIS] = THEKERNEL->config->value(y_axis_max_speed_checksum )->by_default(60000.0F)->as_number() / 60.0F; | |
182 | this->max_speeds[Z_AXIS] = THEKERNEL->config->value(z_axis_max_speed_checksum )->by_default( 300.0F)->as_number() / 60.0F; | |
feb204be | 183 | |
78d0e16a | 184 | // Make our 3 StepperMotors |
807b9b57 JM |
185 | uint16_t const checksums[][5] = { |
186 | ACTUATOR_CHECKSUMS("alpha"), | |
187 | ACTUATOR_CHECKSUMS("beta"), | |
188 | ACTUATOR_CHECKSUMS("gamma"), | |
189 | #if MAX_ROBOT_ACTUATORS > 3 | |
190 | ACTUATOR_CHECKSUMS("delta"), | |
191 | ACTUATOR_CHECKSUMS("epsilon"), | |
192 | ACTUATOR_CHECKSUMS("zeta") | |
193 | #endif | |
194 | }; | |
195 | constexpr size_t actuator_checksum_count = sizeof(checksums)/sizeof(checksums[0]); | |
196 | static_assert(actuator_checksum_count >= k_max_actuators, "Robot checksum array too small for k_max_actuators"); | |
197 | ||
198 | size_t motor_count = std::min(this->arm_solution->get_actuator_count(), k_max_actuators); | |
199 | for (size_t a = 0; a < motor_count; a++) { | |
200 | Pin pins[3]; //step, dir, enable | |
201 | for (size_t i = 0; i < 3; i++) { | |
202 | pins[i].from_string(THEKERNEL->config->value(checksums[a][i])->by_default("nc")->as_string())->as_output(); | |
203 | } | |
204 | actuators[a]= new StepperMotor(pins[0], pins[1], pins[2]); | |
78d0e16a | 205 | |
807b9b57 JM |
206 | actuators[a]->change_steps_per_mm(THEKERNEL->config->value(checksums[a][3])->by_default(a==2 ? 2560.0F : 80.0F)->as_number()); |
207 | actuators[a]->set_max_rate(THEKERNEL->config->value(checksums[a][4])->by_default(30000.0F)->as_number()); | |
208 | } | |
a84f0186 | 209 | |
dd0a7cfa | 210 | check_max_actuator_speeds(); // check the configs are sane |
df6a30f2 | 211 | |
975469ad MM |
212 | // initialise actuator positions to current cartesian position (X0 Y0 Z0) |
213 | // so the first move can be correct if homing is not performed | |
807b9b57 | 214 | ActuatorCoordinates actuator_pos; |
975469ad | 215 | arm_solution->cartesian_to_actuator(last_milestone, actuator_pos); |
807b9b57 | 216 | for (size_t i = 0; i < actuators.size(); i++) |
975469ad | 217 | actuators[i]->change_last_milestone(actuator_pos[i]); |
5966b7d0 AT |
218 | |
219 | //this->clearToolOffset(); | |
4cff3ded AW |
220 | } |
221 | ||
212caccd JM |
222 | void Robot::push_state() |
223 | { | |
224 | bool am= this->absolute_mode; | |
225 | bool im= this->inch_mode; | |
226 | saved_state_t s(this->feed_rate, this->seek_rate, am, im); | |
227 | state_stack.push(s); | |
228 | } | |
229 | ||
230 | void Robot::pop_state() | |
231 | { | |
232 | if(!state_stack.empty()) { | |
233 | auto s= state_stack.top(); | |
234 | state_stack.pop(); | |
235 | this->feed_rate= std::get<0>(s); | |
236 | this->seek_rate= std::get<1>(s); | |
237 | this->absolute_mode= std::get<2>(s); | |
238 | this->inch_mode= std::get<3>(s); | |
239 | } | |
240 | } | |
241 | ||
dd0a7cfa JM |
242 | // this does a sanity check that actuator speeds do not exceed steps rate capability |
243 | // we will override the actuator max_rate if the combination of max_rate and steps/sec exceeds base_stepping_frequency | |
244 | void Robot::check_max_actuator_speeds() | |
245 | { | |
807b9b57 JM |
246 | for (size_t i = 0; i < actuators.size(); i++) { |
247 | float step_freq = actuators[i]->get_max_rate() * actuators[i]->get_steps_per_mm(); | |
248 | if (step_freq > THEKERNEL->base_stepping_frequency) { | |
249 | actuators[i]->set_max_rate(floorf(THEKERNEL->base_stepping_frequency / actuators[i]->get_steps_per_mm())); | |
250 | THEKERNEL->streams->printf("WARNING: actuator %c rate exceeds base_stepping_frequency * alpha_steps_per_mm: %f, setting to %f\n", 'A'+i, step_freq, actuators[i]->max_rate); | |
251 | } | |
dd0a7cfa JM |
252 | } |
253 | } | |
254 | ||
4cff3ded | 255 | //A GCode has been received |
edac9072 | 256 | //See if the current Gcode line has some orders for us |
4710532a JM |
257 | void Robot::on_gcode_received(void *argument) |
258 | { | |
259 | Gcode *gcode = static_cast<Gcode *>(argument); | |
6bc4a00a | 260 | |
23c90ba6 | 261 | this->motion_mode = -1; |
4cff3ded | 262 | |
4710532a JM |
263 | //G-letter Gcodes are mostly what the Robot module is interrested in, other modules also catch the gcode event and do stuff accordingly |
264 | if( gcode->has_g) { | |
265 | switch( gcode->g ) { | |
6e92ab91 JM |
266 | case 0: this->motion_mode = MOTION_MODE_SEEK; break; |
267 | case 1: this->motion_mode = MOTION_MODE_LINEAR; break; | |
268 | case 2: this->motion_mode = MOTION_MODE_CW_ARC; break; | |
269 | case 3: this->motion_mode = MOTION_MODE_CCW_ARC; break; | |
c3df978d JM |
270 | case 4: { |
271 | uint32_t delay_ms= 0; | |
272 | if (gcode->has_letter('P')) { | |
273 | delay_ms= gcode->get_int('P'); | |
274 | } | |
275 | if (gcode->has_letter('S')) { | |
276 | delay_ms += gcode->get_int('S') * 1000; | |
277 | } | |
278 | if (delay_ms > 0){ | |
c3df978d JM |
279 | // drain queue |
280 | THEKERNEL->conveyor->wait_for_empty_queue(); | |
281 | // wait for specified time | |
6ac0b51c | 282 | uint32_t start= us_ticker_read(); // mbed call |
c3df978d JM |
283 | while ((us_ticker_read() - start) < delay_ms*1000) { |
284 | THEKERNEL->call_event(ON_IDLE, this); | |
285 | } | |
286 | } | |
adba2978 | 287 | } |
6b661ab3 | 288 | break; |
807b9b57 JM |
289 | |
290 | case 10: // G10 L2 Pn Xn Yn Zn set WCS | |
291 | // TODO implement G10 L20 | |
292 | if(gcode->has_letter('L') && gcode->get_int('L') == 2 && gcode->has_letter('P')) { | |
293 | size_t n= gcode->get_uint('P'); | |
294 | if(n == 0) n= current_wcs; // set current coordinate system | |
295 | else --n; | |
296 | if(n < k_max_wcs) { | |
297 | float x, y, z; | |
298 | std::tie(x, y, z)= wcs_offsets[n]; | |
299 | if(gcode->has_letter('X')) x= this->to_millimeters(gcode->get_value('X')); | |
300 | if(gcode->has_letter('Y')) y= this->to_millimeters(gcode->get_value('Y')); | |
301 | if(gcode->has_letter('Z')) z= this->to_millimeters(gcode->get_value('Z')); | |
302 | wcs_offsets[n]= wcs_t(x, y, z); | |
303 | } | |
304 | } | |
305 | break; | |
306 | ||
6e92ab91 JM |
307 | case 17: this->select_plane(X_AXIS, Y_AXIS, Z_AXIS); break; |
308 | case 18: this->select_plane(X_AXIS, Z_AXIS, Y_AXIS); break; | |
309 | case 19: this->select_plane(Y_AXIS, Z_AXIS, X_AXIS); break; | |
310 | case 20: this->inch_mode = true; break; | |
311 | case 21: this->inch_mode = false; break; | |
807b9b57 JM |
312 | |
313 | case 54: case 55: case 56: case 57: case 58: case 59: | |
314 | // select WCS 0-8: G54..G59, G59.1, G59.2, G59.3 | |
315 | current_wcs= gcode->g - 54; | |
316 | if(gcode->g == 59 && gcode->subcode > 0) { | |
317 | current_wcs += gcode->subcode; | |
318 | if(current_wcs >= k_max_wcs) current_wcs= k_max_wcs-1; | |
319 | } | |
320 | break; | |
321 | ||
6e92ab91 JM |
322 | case 90: this->absolute_mode = true; break; |
323 | case 91: this->absolute_mode = false; break; | |
807b9b57 | 324 | |
0b804a41 | 325 | case 92: { |
807b9b57 JM |
326 | if(gcode->subcode == 1 || gcode->subcode == 2 || gcode->get_num_args() == 0) { |
327 | g92_offset= wcs_t(0,0,0); | |
cef9acea | 328 | |
4710532a | 329 | } else { |
807b9b57 JM |
330 | float x, y, z; |
331 | std::tie(x, y, z)= g92_offset; | |
332 | if(gcode->has_letter('X')) x= this->to_millimeters(gcode->get_value('X')); | |
333 | if(gcode->has_letter('Y')) y= this->to_millimeters(gcode->get_value('Y')); | |
334 | if(gcode->has_letter('Z')) z= this->to_millimeters(gcode->get_value('Z')); | |
335 | g92_offset= wcs_t(x, y, z); | |
6bc4a00a | 336 | } |
78d0e16a | 337 | return; |
4710532a JM |
338 | } |
339 | } | |
340 | } else if( gcode->has_m) { | |
341 | switch( gcode->m ) { | |
807b9b57 JM |
342 | case 2: // M2 end of program |
343 | current_wcs= 0; | |
344 | absolute_mode= true; | |
345 | motion_mode = MOTION_MODE_LINEAR; // feed | |
346 | break; | |
347 | ||
0fb5b438 | 348 | case 92: // M92 - set steps per mm |
0fb5b438 | 349 | if (gcode->has_letter('X')) |
78d0e16a | 350 | actuators[0]->change_steps_per_mm(this->to_millimeters(gcode->get_value('X'))); |
0fb5b438 | 351 | if (gcode->has_letter('Y')) |
78d0e16a | 352 | actuators[1]->change_steps_per_mm(this->to_millimeters(gcode->get_value('Y'))); |
0fb5b438 | 353 | if (gcode->has_letter('Z')) |
78d0e16a | 354 | actuators[2]->change_steps_per_mm(this->to_millimeters(gcode->get_value('Z'))); |
7369629d MM |
355 | if (gcode->has_letter('F')) |
356 | seconds_per_minute = gcode->get_value('F'); | |
78d0e16a MM |
357 | |
358 | gcode->stream->printf("X:%g Y:%g Z:%g F:%g ", actuators[0]->steps_per_mm, actuators[1]->steps_per_mm, actuators[2]->steps_per_mm, seconds_per_minute); | |
0fb5b438 | 359 | gcode->add_nl = true; |
dd0a7cfa | 360 | check_max_actuator_speeds(); |
0fb5b438 | 361 | return; |
562db364 | 362 | |
4710532a | 363 | case 114: { |
58c32991 | 364 | char buf[64]; |
807b9b57 JM |
365 | int n= 0; |
366 | if(gcode->subcode == 0) { // M114 print WCS | |
367 | n = snprintf(buf, sizeof(buf), "C: X:%1.3f Y:%1.3f Z:%1.3f", | |
368 | from_millimeters(this->last_milestone[0]), | |
369 | from_millimeters(this->last_milestone[1]), | |
370 | from_millimeters(this->last_milestone[2])); | |
371 | ||
372 | }else if(gcode->subcode == 1) { // M114.1 print Machine coordinate system | |
373 | // TODO figure this out | |
374 | n = snprintf(buf, sizeof(buf), "X:%1.3f Y:%1.3f Z:%1.3f", | |
4710532a JM |
375 | from_millimeters(this->last_milestone[0]), |
376 | from_millimeters(this->last_milestone[1]), | |
807b9b57 JM |
377 | from_millimeters(this->last_milestone[2])); |
378 | ||
379 | }else if(gcode->subcode == 2) { // M114.2 print realtime actuator position | |
380 | n = snprintf(buf, sizeof(buf), "A:%1.3f B:%1.3f C:%1.3f", | |
58c32991 JM |
381 | actuators[X_AXIS]->get_current_position(), |
382 | actuators[Y_AXIS]->get_current_position(), | |
383 | actuators[Z_AXIS]->get_current_position() ); | |
807b9b57 JM |
384 | } |
385 | if(n > 0) | |
386 | gcode->txt_after_ok.append(buf, n); | |
4710532a JM |
387 | } |
388 | return; | |
33e4cc02 | 389 | |
212caccd JM |
390 | case 120: // push state |
391 | push_state(); | |
392 | break; | |
562db364 JM |
393 | |
394 | case 121: // pop state | |
212caccd | 395 | pop_state(); |
562db364 JM |
396 | break; |
397 | ||
83488642 JM |
398 | case 203: // M203 Set maximum feedrates in mm/sec |
399 | if (gcode->has_letter('X')) | |
4710532a | 400 | this->max_speeds[X_AXIS] = gcode->get_value('X'); |
83488642 | 401 | if (gcode->has_letter('Y')) |
4710532a | 402 | this->max_speeds[Y_AXIS] = gcode->get_value('Y'); |
83488642 | 403 | if (gcode->has_letter('Z')) |
4710532a | 404 | this->max_speeds[Z_AXIS] = gcode->get_value('Z'); |
807b9b57 JM |
405 | for (size_t i = 0; i < 3 && i < actuators.size(); i++) { |
406 | if (gcode->has_letter('A' + i)) | |
407 | actuators[i]->set_max_rate(gcode->get_value('A' + i)); | |
408 | } | |
dd0a7cfa JM |
409 | check_max_actuator_speeds(); |
410 | ||
928467c0 | 411 | if(gcode->get_num_args() == 0) { |
807b9b57 JM |
412 | gcode->stream->printf("X:%g Y:%g Z:%g", |
413 | this->max_speeds[X_AXIS], this->max_speeds[Y_AXIS], this->max_speeds[Z_AXIS]); | |
414 | for (size_t i = 0; i < 3 && i < actuators.size(); i++) { | |
415 | gcode->stream->printf(" %c : %g", 'A' + i, actuators[i]->get_max_rate()); //xxx | |
416 | } | |
928467c0 JM |
417 | gcode->add_nl = true; |
418 | } | |
83488642 JM |
419 | break; |
420 | ||
c5fe1787 | 421 | case 204: // M204 Snnn - set acceleration to nnn, Znnn sets z acceleration |
4710532a | 422 | if (gcode->has_letter('S')) { |
4710532a | 423 | float acc = gcode->get_value('S'); // mm/s^2 |
d4ee6ee2 | 424 | // enforce minimum |
da947c62 MM |
425 | if (acc < 1.0F) |
426 | acc = 1.0F; | |
4710532a | 427 | THEKERNEL->planner->acceleration = acc; |
d4ee6ee2 | 428 | } |
c5fe1787 | 429 | if (gcode->has_letter('Z')) { |
c5fe1787 JM |
430 | float acc = gcode->get_value('Z'); // mm/s^2 |
431 | // enforce positive | |
432 | if (acc < 0.0F) | |
433 | acc = 0.0F; | |
434 | THEKERNEL->planner->z_acceleration = acc; | |
435 | } | |
d4ee6ee2 JM |
436 | break; |
437 | ||
9502f9d5 | 438 | case 205: // M205 Xnnn - set junction deviation, Z - set Z junction deviation, Snnn - Set minimum planner speed, Ynnn - set minimum step rate |
4710532a JM |
439 | if (gcode->has_letter('X')) { |
440 | float jd = gcode->get_value('X'); | |
d4ee6ee2 | 441 | // enforce minimum |
8b69c90d JM |
442 | if (jd < 0.0F) |
443 | jd = 0.0F; | |
4710532a | 444 | THEKERNEL->planner->junction_deviation = jd; |
d4ee6ee2 | 445 | } |
107df03f JM |
446 | if (gcode->has_letter('Z')) { |
447 | float jd = gcode->get_value('Z'); | |
448 | // enforce minimum, -1 disables it and uses regular junction deviation | |
449 | if (jd < -1.0F) | |
450 | jd = -1.0F; | |
451 | THEKERNEL->planner->z_junction_deviation = jd; | |
452 | } | |
4710532a JM |
453 | if (gcode->has_letter('S')) { |
454 | float mps = gcode->get_value('S'); | |
8b69c90d JM |
455 | // enforce minimum |
456 | if (mps < 0.0F) | |
457 | mps = 0.0F; | |
4710532a | 458 | THEKERNEL->planner->minimum_planner_speed = mps; |
8b69c90d | 459 | } |
9502f9d5 | 460 | if (gcode->has_letter('Y')) { |
807b9b57 | 461 | actuators[0]->default_minimum_actuator_rate = gcode->get_value('Y'); |
9502f9d5 | 462 | } |
d4ee6ee2 | 463 | break; |
98761c28 | 464 | |
7369629d | 465 | case 220: // M220 - speed override percentage |
4710532a | 466 | if (gcode->has_letter('S')) { |
1ad23cd3 | 467 | float factor = gcode->get_value('S'); |
98761c28 | 468 | // enforce minimum 10% speed |
da947c62 MM |
469 | if (factor < 10.0F) |
470 | factor = 10.0F; | |
471 | // enforce maximum 10x speed | |
472 | if (factor > 1000.0F) | |
473 | factor = 1000.0F; | |
474 | ||
475 | seconds_per_minute = 6000.0F / factor; | |
adba2978 | 476 | }else{ |
9ef9f45b | 477 | gcode->stream->printf("Speed factor at %6.2f %%\n", 6000.0F / seconds_per_minute); |
7369629d | 478 | } |
b4f56013 | 479 | break; |
ec4773e5 | 480 | |
494dc541 | 481 | case 400: // wait until all moves are done up to this point |
314ab8f7 | 482 | THEKERNEL->conveyor->wait_for_empty_queue(); |
494dc541 JM |
483 | break; |
484 | ||
33e4cc02 | 485 | case 500: // M500 saves some volatile settings to config override file |
b7cd847e | 486 | case 503: { // M503 just prints the settings |
78d0e16a | 487 | gcode->stream->printf(";Steps per unit:\nM92 X%1.5f Y%1.5f Z%1.5f\n", actuators[0]->steps_per_mm, actuators[1]->steps_per_mm, actuators[2]->steps_per_mm); |
c5fe1787 | 488 | gcode->stream->printf(";Acceleration mm/sec^2:\nM204 S%1.5f Z%1.5f\n", THEKERNEL->planner->acceleration, THEKERNEL->planner->z_acceleration); |
c9cc5e06 | 489 | gcode->stream->printf(";X- Junction Deviation, Z- Z junction deviation, S - Minimum Planner speed mm/sec:\nM205 X%1.5f Z%1.5f S%1.5f\n", THEKERNEL->planner->junction_deviation, THEKERNEL->planner->z_junction_deviation, THEKERNEL->planner->minimum_planner_speed); |
807b9b57 JM |
490 | gcode->stream->printf(";Max feedrates in mm/sec, XYZ cartesian, ABC actuator:\nM203 X%1.5f Y%1.5f Z%1.5f", |
491 | this->max_speeds[X_AXIS], this->max_speeds[Y_AXIS], this->max_speeds[Z_AXIS]); | |
492 | for (size_t i=0; i < 3 && i < actuators.size(); i++){ | |
493 | gcode->stream->printf(" %c%1.5f", 'A' + i, actuators[i]->get_max_rate()); | |
494 | } | |
495 | gcode->stream->printf("\n"); | |
b7cd847e JM |
496 | |
497 | // get or save any arm solution specific optional values | |
498 | BaseSolution::arm_options_t options; | |
499 | if(arm_solution->get_optional(options) && !options.empty()) { | |
500 | gcode->stream->printf(";Optional arm solution specific settings:\nM665"); | |
4710532a | 501 | for(auto &i : options) { |
b7cd847e JM |
502 | gcode->stream->printf(" %c%1.4f", i.first, i.second); |
503 | } | |
504 | gcode->stream->printf("\n"); | |
505 | } | |
6e92ab91 | 506 | |
807b9b57 JM |
507 | // save wcs_offsets and current_wcs |
508 | // TODO this may need to be done whenever they change to be compliant | |
509 | gcode->stream->printf(";WCS settings\n"); | |
510 | gcode->stream->printf("G5%c", std::min(current_wcs, (uint8_t)(5 + '4'))); | |
511 | if(current_wcs >= 6) { | |
512 | gcode->stream->printf(".%c\n", '1' + (current_wcs-5)); | |
513 | }else{ | |
514 | gcode->stream->printf("\n"); | |
515 | } | |
516 | int n= 1; | |
517 | for(auto &i : wcs_offsets) { | |
518 | if(i != wcs_t(0,0,0)) { | |
519 | float x, y, z; | |
520 | std::tie(x, y, z) = i; | |
521 | gcode->stream->printf("G10 L2 P%d X%f Y%f Z%f\n", n, x, y, z); | |
522 | } | |
523 | ++n; | |
524 | } | |
b7cd847e | 525 | } |
807b9b57 | 526 | break; |
33e4cc02 | 527 | |
b7cd847e | 528 | case 665: { // M665 set optional arm solution variables based on arm solution. |
ebc75fc6 JM |
529 | // the parameter args could be any letter each arm solution only accepts certain ones |
530 | BaseSolution::arm_options_t options= gcode->get_args(); | |
531 | options.erase('S'); // don't include the S | |
532 | options.erase('U'); // don't include the U | |
533 | if(options.size() > 0) { | |
534 | // set the specified options | |
535 | arm_solution->set_optional(options); | |
536 | } | |
537 | options.clear(); | |
b7cd847e | 538 | if(arm_solution->get_optional(options)) { |
ebc75fc6 | 539 | // foreach optional value |
4710532a | 540 | for(auto &i : options) { |
b7cd847e JM |
541 | // print all current values of supported options |
542 | gcode->stream->printf("%c: %8.4f ", i.first, i.second); | |
5523c05d | 543 | gcode->add_nl = true; |
ec4773e5 JM |
544 | } |
545 | } | |
ec4773e5 | 546 | |
4a839bea | 547 | if(gcode->has_letter('S')) { // set delta segments per second, not saved by M500 |
4710532a | 548 | this->delta_segments_per_second = gcode->get_value('S'); |
4a839bea JM |
549 | gcode->stream->printf("Delta segments set to %8.4f segs/sec\n", this->delta_segments_per_second); |
550 | ||
551 | }else if(gcode->has_letter('U')) { // or set mm_per_line_segment, not saved by M500 | |
552 | this->mm_per_line_segment = gcode->get_value('U'); | |
553 | this->delta_segments_per_second = 0; | |
554 | gcode->stream->printf("mm per line segment set to %8.4f\n", this->mm_per_line_segment); | |
ec29d378 | 555 | } |
4a839bea | 556 | |
ec4773e5 | 557 | break; |
b7cd847e | 558 | } |
6989211c | 559 | } |
494dc541 JM |
560 | } |
561 | ||
c83887ea MM |
562 | if( this->motion_mode < 0) |
563 | return; | |
6bc4a00a | 564 | |
4710532a | 565 | //Get parameters |
1ad23cd3 | 566 | float target[3], offset[3]; |
c2885de8 | 567 | clear_vector(offset); |
6bc4a00a | 568 | |
2ba859c9 | 569 | memcpy(target, this->last_milestone, sizeof(target)); //default to last target |
6bc4a00a | 570 | |
4710532a JM |
571 | for(char letter = 'I'; letter <= 'K'; letter++) { |
572 | if( gcode->has_letter(letter) ) { | |
573 | offset[letter - 'I'] = this->to_millimeters(gcode->get_value(letter)); | |
c2885de8 JM |
574 | } |
575 | } | |
4710532a JM |
576 | for(char letter = 'X'; letter <= 'Z'; letter++) { |
577 | if( gcode->has_letter(letter) ) { | |
c7689006 | 578 | target[letter - 'X'] = this->to_millimeters(gcode->get_value(letter)) + (this->absolute_mode ? this->toolOffset[letter - 'X'] : target[letter - 'X']); |
c2885de8 JM |
579 | } |
580 | } | |
6bc4a00a | 581 | |
4710532a | 582 | if( gcode->has_letter('F') ) { |
7369629d | 583 | if( this->motion_mode == MOTION_MODE_SEEK ) |
da947c62 | 584 | this->seek_rate = this->to_millimeters( gcode->get_value('F') ); |
7369629d | 585 | else |
da947c62 | 586 | this->feed_rate = this->to_millimeters( gcode->get_value('F') ); |
7369629d | 587 | } |
6bc4a00a | 588 | |
4cff3ded | 589 | //Perform any physical actions |
fae93525 JM |
590 | switch(this->motion_mode) { |
591 | case MOTION_MODE_CANCEL: break; | |
592 | case MOTION_MODE_SEEK : this->append_line(gcode, target, this->seek_rate / seconds_per_minute ); break; | |
593 | case MOTION_MODE_LINEAR: this->append_line(gcode, target, this->feed_rate / seconds_per_minute ); break; | |
594 | case MOTION_MODE_CW_ARC: | |
595 | case MOTION_MODE_CCW_ARC: this->compute_arc(gcode, offset, target ); break; | |
4cff3ded | 596 | } |
13e4a3f9 | 597 | |
fae93525 | 598 | // last_milestone was set to target in append_milestone, no need to do it again |
4cff3ded | 599 | |
edac9072 AW |
600 | } |
601 | ||
5984acdf | 602 | // We received a new gcode, and one of the functions |
edac9072 AW |
603 | // determined the distance for that given gcode. So now we can attach this gcode to the right block |
604 | // and continue | |
4710532a JM |
605 | void Robot::distance_in_gcode_is_known(Gcode *gcode) |
606 | { | |
edac9072 | 607 | //If the queue is empty, execute immediatly, otherwise attach to the last added block |
e0ee24ed | 608 | THEKERNEL->conveyor->append_gcode(gcode); |
edac9072 AW |
609 | } |
610 | ||
cef9acea JM |
611 | // reset the position for all axis (used in homing for delta as last_milestone may be bogus) |
612 | void Robot::reset_axis_position(float x, float y, float z) | |
613 | { | |
614 | this->last_milestone[X_AXIS] = x; | |
615 | this->last_milestone[Y_AXIS] = y; | |
616 | this->last_milestone[Z_AXIS] = z; | |
3632a517 JM |
617 | this->transformed_last_milestone[X_AXIS] = x; |
618 | this->transformed_last_milestone[Y_AXIS] = y; | |
619 | this->transformed_last_milestone[Z_AXIS] = z; | |
cef9acea | 620 | |
807b9b57 | 621 | ActuatorCoordinates actuator_pos; |
cef9acea | 622 | arm_solution->cartesian_to_actuator(this->last_milestone, actuator_pos); |
807b9b57 | 623 | for (size_t i = 0; i < actuators.size(); i++) |
cef9acea JM |
624 | actuators[i]->change_last_milestone(actuator_pos[i]); |
625 | } | |
626 | ||
807b9b57 | 627 | // Reset the position for an axis (used in homing) |
4710532a JM |
628 | void Robot::reset_axis_position(float position, int axis) |
629 | { | |
2ba859c9 | 630 | this->last_milestone[axis] = position; |
3632a517 | 631 | this->transformed_last_milestone[axis] = position; |
29c28822 | 632 | |
807b9b57 | 633 | ActuatorCoordinates actuator_pos; |
cef9acea | 634 | arm_solution->cartesian_to_actuator(this->last_milestone, actuator_pos); |
29c28822 | 635 | |
807b9b57 | 636 | for (size_t i = 0; i < actuators.size(); i++) |
29c28822 | 637 | actuators[i]->change_last_milestone(actuator_pos[i]); |
4cff3ded AW |
638 | } |
639 | ||
728477c4 | 640 | // Use FK to find out where actuator is and reset lastmilestone to match |
728477c4 JM |
641 | void Robot::reset_position_from_current_actuator_position() |
642 | { | |
807b9b57 JM |
643 | ActuatorCoordinates actuator_pos; |
644 | for (size_t i = 0; i < actuators.size(); i++) { | |
645 | actuator_pos[i] = actuators[i]->get_current_position(); | |
646 | } | |
58c32991 | 647 | arm_solution->actuator_to_cartesian(actuator_pos, this->last_milestone); |
4befe777 | 648 | memcpy(this->transformed_last_milestone, this->last_milestone, sizeof(this->transformed_last_milestone)); |
cf91d4f3 JM |
649 | |
650 | // now reset actuator correctly, NOTE this may lose a little precision | |
651 | arm_solution->cartesian_to_actuator(this->last_milestone, actuator_pos); | |
807b9b57 | 652 | for (size_t i = 0; i < actuators.size(); i++) |
cf91d4f3 | 653 | actuators[i]->change_last_milestone(actuator_pos[i]); |
728477c4 | 654 | } |
edac9072 | 655 | |
4cff3ded | 656 | // Convert target from millimeters to steps, and append this to the planner |
d2adef5e | 657 | void Robot::append_milestone(Gcode *gcode, float target[], float rate_mm_s) |
df6a30f2 | 658 | { |
1ad23cd3 | 659 | float deltas[3]; |
df6a30f2 | 660 | float unit_vec[3]; |
807b9b57 | 661 | ActuatorCoordinates actuator_pos; |
3632a517 | 662 | float transformed_target[3]; // adjust target for bed compensation |
df6a30f2 MM |
663 | float millimeters_of_travel; |
664 | ||
3632a517 JM |
665 | // unity transform by default |
666 | memcpy(transformed_target, target, sizeof(transformed_target)); | |
5e45206a | 667 | |
3632a517 JM |
668 | // check function pointer and call if set to transform the target to compensate for bed |
669 | if(compensationTransform) { | |
670 | // some compensation strategies can transform XYZ, some just change Z | |
671 | compensationTransform(transformed_target); | |
33742399 | 672 | } |
ff7e9858 | 673 | |
807b9b57 JM |
674 | // apply wcs offsets and g92 offset |
675 | transformed_target[0] += (std::get<0>(wcs_offsets[current_wcs]) + std::get<0>(g92_offset)); | |
676 | transformed_target[1] += (std::get<1>(wcs_offsets[current_wcs]) + std::get<1>(g92_offset)); | |
677 | transformed_target[2] += (std::get<2>(wcs_offsets[current_wcs]) + std::get<2>(g92_offset)); | |
678 | ||
3632a517 JM |
679 | // find distance moved by each axis, use transformed target from last_transformed_target |
680 | for (int axis = X_AXIS; axis <= Z_AXIS; axis++){ | |
681 | deltas[axis] = transformed_target[axis] - transformed_last_milestone[axis]; | |
682 | } | |
683 | // store last transformed | |
684 | memcpy(this->transformed_last_milestone, transformed_target, sizeof(this->transformed_last_milestone)); | |
aab6cbba | 685 | |
edac9072 | 686 | // Compute how long this move moves, so we can attach it to the block for later use |
869acfb8 | 687 | millimeters_of_travel = sqrtf( powf( deltas[X_AXIS], 2 ) + powf( deltas[Y_AXIS], 2 ) + powf( deltas[Z_AXIS], 2 ) ); |
df6a30f2 MM |
688 | |
689 | // find distance unit vector | |
690 | for (int i = 0; i < 3; i++) | |
691 | unit_vec[i] = deltas[i] / millimeters_of_travel; | |
692 | ||
693 | // Do not move faster than the configured cartesian limits | |
4710532a JM |
694 | for (int axis = X_AXIS; axis <= Z_AXIS; axis++) { |
695 | if ( max_speeds[axis] > 0 ) { | |
da947c62 | 696 | float axis_speed = fabs(unit_vec[axis] * rate_mm_s); |
df6a30f2 MM |
697 | |
698 | if (axis_speed > max_speeds[axis]) | |
da947c62 | 699 | rate_mm_s *= ( max_speeds[axis] / axis_speed ); |
7b470506 AW |
700 | } |
701 | } | |
4cff3ded | 702 | |
5e45206a | 703 | // find actuator position given cartesian position, use actual adjusted target |
3632a517 | 704 | arm_solution->cartesian_to_actuator( transformed_target, actuator_pos ); |
df6a30f2 | 705 | |
928467c0 | 706 | float isecs= rate_mm_s / millimeters_of_travel; |
df6a30f2 | 707 | // check per-actuator speed limits |
807b9b57 | 708 | for (size_t actuator = 0; actuator < actuators.size(); actuator++) { |
928467c0 JM |
709 | float actuator_rate = fabsf(actuator_pos[actuator] - actuators[actuator]->last_milestone_mm) * isecs; |
710 | if (actuator_rate > actuators[actuator]->get_max_rate()){ | |
3494f3d0 | 711 | rate_mm_s *= (actuators[actuator]->get_max_rate() / actuator_rate); |
4caeff22 | 712 | isecs= rate_mm_s / millimeters_of_travel; |
928467c0 JM |
713 | } |
714 | } | |
715 | ||
edac9072 | 716 | // Append the block to the planner |
da947c62 | 717 | THEKERNEL->planner->append_block( actuator_pos, rate_mm_s, millimeters_of_travel, unit_vec ); |
4cff3ded | 718 | |
5e45206a | 719 | // Update the last_milestone to the current target for the next time we use last_milestone, use the requested target not the adjusted one |
c2885de8 | 720 | memcpy(this->last_milestone, target, sizeof(this->last_milestone)); // this->last_milestone[] = target[]; |
4cff3ded AW |
721 | |
722 | } | |
723 | ||
edac9072 | 724 | // Append a move to the queue ( cutting it into segments if needed ) |
4710532a JM |
725 | void Robot::append_line(Gcode *gcode, float target[], float rate_mm_s ) |
726 | { | |
edac9072 | 727 | // Find out the distance for this gcode |
a9d299ab | 728 | // NOTE we need to do sqrt here as this setting of millimeters_of_travel is used by extruder and other modules even if there is no XYZ move |
3b4b05b8 | 729 | gcode->millimeters_of_travel = sqrtf(powf( target[X_AXIS] - this->last_milestone[X_AXIS], 2 ) + powf( target[Y_AXIS] - this->last_milestone[Y_AXIS], 2 ) + powf( target[Z_AXIS] - this->last_milestone[Z_AXIS], 2 )); |
4cff3ded | 730 | |
3b4b05b8 JM |
731 | // We ignore non- XYZ moves ( for example, extruder moves are not XYZ moves ) |
732 | if( gcode->millimeters_of_travel < 0.00001F ) { | |
95b4885b JM |
733 | return; |
734 | } | |
436a2cd1 | 735 | |
edac9072 | 736 | // Mark the gcode as having a known distance |
5dcb2ff3 | 737 | this->distance_in_gcode_is_known( gcode ); |
436a2cd1 | 738 | |
d2adef5e JM |
739 | // if we have volumetric limits enabled we calculate the volume for this move and limit the rate if it exceeds the stated limit |
740 | // Note we need to be using volumetric extrusion for this to work as Ennn is in mm³ not mm | |
741 | // We also check we are not exceeding the E max_speed for the current extruder | |
742 | // We ask Extruder to do all the work, but as Extruder won't even see this gcode until after it has been planned | |
743 | // we need to ask it now passing in the relevant data. | |
744 | // NOTE we need to do this before we segment the line (for deltas) | |
745 | if(gcode->has_letter('E')) { | |
746 | float data[2]; | |
747 | data[0]= gcode->get_value('E'); // E target (maybe absolute or relative) | |
748 | data[1]= rate_mm_s / gcode->millimeters_of_travel; // inverted seconds for the move | |
749 | if(PublicData::set_value(extruder_checksum, target_checksum, data)) { | |
750 | rate_mm_s *= data[1]; | |
751 | //THEKERNEL->streams->printf("Extruder has changed the rate by %f to %f\n", data[1], rate_mm_s); | |
752 | } | |
753 | } | |
754 | ||
4a0c8e14 JM |
755 | // We cut the line into smaller segments. This is not usefull in a cartesian robot, but necessary for robots with rotational axes. |
756 | // In cartesian robot, a high "mm_per_line_segment" setting will prevent waste. | |
3b4b05b8 JM |
757 | // In delta robots either mm_per_line_segment can be used OR delta_segments_per_second |
758 | // The latter is more efficient and avoids splitting fast long lines into very small segments, like initial z move to 0, it is what Johanns Marlin delta port does | |
4a0c8e14 | 759 | uint16_t segments; |
5984acdf | 760 | |
c2885de8 | 761 | if(this->delta_segments_per_second > 1.0F) { |
4a0c8e14 JM |
762 | // enabled if set to something > 1, it is set to 0.0 by default |
763 | // segment based on current speed and requested segments per second | |
764 | // the faster the travel speed the fewer segments needed | |
765 | // NOTE rate is mm/sec and we take into account any speed override | |
da947c62 | 766 | float seconds = gcode->millimeters_of_travel / rate_mm_s; |
9502f9d5 | 767 | segments = max(1.0F, ceilf(this->delta_segments_per_second * seconds)); |
4a0c8e14 | 768 | // TODO if we are only moving in Z on a delta we don't really need to segment at all |
5984acdf | 769 | |
4710532a JM |
770 | } else { |
771 | if(this->mm_per_line_segment == 0.0F) { | |
772 | segments = 1; // don't split it up | |
773 | } else { | |
9502f9d5 | 774 | segments = ceilf( gcode->millimeters_of_travel / this->mm_per_line_segment); |
4a0c8e14 JM |
775 | } |
776 | } | |
5984acdf | 777 | |
4710532a | 778 | if (segments > 1) { |
2ba859c9 MM |
779 | // A vector to keep track of the endpoint of each segment |
780 | float segment_delta[3]; | |
781 | float segment_end[3]; | |
782 | ||
783 | // How far do we move each segment? | |
9fff6045 | 784 | for (int i = X_AXIS; i <= Z_AXIS; i++) |
2ba859c9 | 785 | segment_delta[i] = (target[i] - last_milestone[i]) / segments; |
4cff3ded | 786 | |
c8e0fb15 MM |
787 | // segment 0 is already done - it's the end point of the previous move so we start at segment 1 |
788 | // We always add another point after this loop so we stop at segments-1, ie i < segments | |
4710532a | 789 | for (int i = 1; i < segments; i++) { |
73706276 | 790 | if(THEKERNEL->is_halted()) return; // don't queue any more segments |
4710532a | 791 | for(int axis = X_AXIS; axis <= Z_AXIS; axis++ ) |
2ba859c9 MM |
792 | segment_end[axis] = last_milestone[axis] + segment_delta[axis]; |
793 | ||
794 | // Append the end of this segment to the queue | |
928467c0 | 795 | this->append_milestone(gcode, segment_end, rate_mm_s); |
2ba859c9 | 796 | } |
4cff3ded | 797 | } |
5984acdf MM |
798 | |
799 | // Append the end of this full move to the queue | |
928467c0 | 800 | this->append_milestone(gcode, target, rate_mm_s); |
2134bcf2 MM |
801 | |
802 | // if adding these blocks didn't start executing, do that now | |
803 | THEKERNEL->conveyor->ensure_running(); | |
4cff3ded AW |
804 | } |
805 | ||
4cff3ded | 806 | |
edac9072 | 807 | // Append an arc to the queue ( cutting it into segments as needed ) |
4710532a JM |
808 | void Robot::append_arc(Gcode *gcode, float target[], float offset[], float radius, bool is_clockwise ) |
809 | { | |
aab6cbba | 810 | |
edac9072 | 811 | // Scary math |
2ba859c9 MM |
812 | float center_axis0 = this->last_milestone[this->plane_axis_0] + offset[this->plane_axis_0]; |
813 | float center_axis1 = this->last_milestone[this->plane_axis_1] + offset[this->plane_axis_1]; | |
814 | float linear_travel = target[this->plane_axis_2] - this->last_milestone[this->plane_axis_2]; | |
1ad23cd3 MM |
815 | float r_axis0 = -offset[this->plane_axis_0]; // Radius vector from center to current location |
816 | float r_axis1 = -offset[this->plane_axis_1]; | |
817 | float rt_axis0 = target[this->plane_axis_0] - center_axis0; | |
818 | float rt_axis1 = target[this->plane_axis_1] - center_axis1; | |
aab6cbba | 819 | |
51871fb8 | 820 | // Patch from GRBL Firmware - Christoph Baumann 04072015 |
aab6cbba | 821 | // CCW angle between position and target from circle center. Only one atan2() trig computation required. |
5fa0c173 PA |
822 | float angular_travel = atan2(r_axis0*rt_axis1-r_axis1*rt_axis0, r_axis0*rt_axis0+r_axis1*rt_axis1); |
823 | if (is_clockwise) { // Correct atan2 output per direction | |
824 | if (angular_travel >= -ARC_ANGULAR_TRAVEL_EPSILON) { angular_travel -= 2*M_PI; } | |
825 | } else { | |
826 | if (angular_travel <= ARC_ANGULAR_TRAVEL_EPSILON) { angular_travel += 2*M_PI; } | |
4710532a | 827 | } |
aab6cbba | 828 | |
edac9072 | 829 | // Find the distance for this gcode |
4710532a | 830 | gcode->millimeters_of_travel = hypotf(angular_travel * radius, fabs(linear_travel)); |
436a2cd1 | 831 | |
edac9072 | 832 | // We don't care about non-XYZ moves ( for example the extruder produces some of those ) |
3b4b05b8 | 833 | if( gcode->millimeters_of_travel < 0.00001F ) { |
4710532a JM |
834 | return; |
835 | } | |
5dcb2ff3 | 836 | |
edac9072 | 837 | // Mark the gcode as having a known distance |
d149c730 | 838 | this->distance_in_gcode_is_known( gcode ); |
5984acdf MM |
839 | |
840 | // Figure out how many segments for this gcode | |
c8f4ee77 | 841 | uint16_t segments = floorf(gcode->millimeters_of_travel / this->mm_per_arc_segment); |
aab6cbba | 842 | |
4710532a JM |
843 | float theta_per_segment = angular_travel / segments; |
844 | float linear_per_segment = linear_travel / segments; | |
aab6cbba AW |
845 | |
846 | /* Vector rotation by transformation matrix: r is the original vector, r_T is the rotated vector, | |
847 | and phi is the angle of rotation. Based on the solution approach by Jens Geisler. | |
848 | r_T = [cos(phi) -sin(phi); | |
849 | sin(phi) cos(phi] * r ; | |
850 | For arc generation, the center of the circle is the axis of rotation and the radius vector is | |
851 | defined from the circle center to the initial position. Each line segment is formed by successive | |
852 | vector rotations. This requires only two cos() and sin() computations to form the rotation | |
853 | matrix for the duration of the entire arc. Error may accumulate from numerical round-off, since | |
1ad23cd3 | 854 | all float numbers are single precision on the Arduino. (True float precision will not have |
aab6cbba AW |
855 | round off issues for CNC applications.) Single precision error can accumulate to be greater than |
856 | tool precision in some cases. Therefore, arc path correction is implemented. | |
857 | ||
858 | Small angle approximation may be used to reduce computation overhead further. This approximation | |
859 | holds for everything, but very small circles and large mm_per_arc_segment values. In other words, | |
860 | theta_per_segment would need to be greater than 0.1 rad and N_ARC_CORRECTION would need to be large | |
861 | to cause an appreciable drift error. N_ARC_CORRECTION~=25 is more than small enough to correct for | |
862 | numerical drift error. N_ARC_CORRECTION may be on the order a hundred(s) before error becomes an | |
863 | issue for CNC machines with the single precision Arduino calculations. | |
864 | This approximation also allows mc_arc to immediately insert a line segment into the planner | |
865 | without the initial overhead of computing cos() or sin(). By the time the arc needs to be applied | |
866 | a correction, the planner should have caught up to the lag caused by the initial mc_arc overhead. | |
867 | This is important when there are successive arc motions. | |
868 | */ | |
869 | // Vector rotation matrix values | |
4710532a | 870 | float cos_T = 1 - 0.5F * theta_per_segment * theta_per_segment; // Small angle approximation |
1ad23cd3 | 871 | float sin_T = theta_per_segment; |
aab6cbba | 872 | |
1ad23cd3 MM |
873 | float arc_target[3]; |
874 | float sin_Ti; | |
875 | float cos_Ti; | |
876 | float r_axisi; | |
aab6cbba AW |
877 | uint16_t i; |
878 | int8_t count = 0; | |
879 | ||
880 | // Initialize the linear axis | |
2ba859c9 | 881 | arc_target[this->plane_axis_2] = this->last_milestone[this->plane_axis_2]; |
aab6cbba | 882 | |
4710532a | 883 | for (i = 1; i < segments; i++) { // Increment (segments-1) |
73706276 | 884 | if(THEKERNEL->is_halted()) return; // don't queue any more segments |
aab6cbba | 885 | |
b66fb830 | 886 | if (count < this->arc_correction ) { |
4710532a JM |
887 | // Apply vector rotation matrix |
888 | r_axisi = r_axis0 * sin_T + r_axis1 * cos_T; | |
889 | r_axis0 = r_axis0 * cos_T - r_axis1 * sin_T; | |
890 | r_axis1 = r_axisi; | |
891 | count++; | |
aab6cbba | 892 | } else { |
4710532a JM |
893 | // Arc correction to radius vector. Computed only every N_ARC_CORRECTION increments. |
894 | // Compute exact location by applying transformation matrix from initial radius vector(=-offset). | |
895 | cos_Ti = cosf(i * theta_per_segment); | |
896 | sin_Ti = sinf(i * theta_per_segment); | |
897 | r_axis0 = -offset[this->plane_axis_0] * cos_Ti + offset[this->plane_axis_1] * sin_Ti; | |
898 | r_axis1 = -offset[this->plane_axis_0] * sin_Ti - offset[this->plane_axis_1] * cos_Ti; | |
899 | count = 0; | |
aab6cbba AW |
900 | } |
901 | ||
902 | // Update arc_target location | |
903 | arc_target[this->plane_axis_0] = center_axis0 + r_axis0; | |
904 | arc_target[this->plane_axis_1] = center_axis1 + r_axis1; | |
905 | arc_target[this->plane_axis_2] += linear_per_segment; | |
edac9072 AW |
906 | |
907 | // Append this segment to the queue | |
928467c0 | 908 | this->append_milestone(gcode, arc_target, this->feed_rate / seconds_per_minute); |
aab6cbba AW |
909 | |
910 | } | |
edac9072 | 911 | |
aab6cbba | 912 | // Ensure last segment arrives at target location. |
928467c0 | 913 | this->append_milestone(gcode, target, this->feed_rate / seconds_per_minute); |
aab6cbba AW |
914 | } |
915 | ||
edac9072 | 916 | // Do the math for an arc and add it to the queue |
4710532a JM |
917 | void Robot::compute_arc(Gcode *gcode, float offset[], float target[]) |
918 | { | |
aab6cbba AW |
919 | |
920 | // Find the radius | |
13addf09 | 921 | float radius = hypotf(offset[this->plane_axis_0], offset[this->plane_axis_1]); |
aab6cbba AW |
922 | |
923 | // Set clockwise/counter-clockwise sign for mc_arc computations | |
924 | bool is_clockwise = false; | |
4710532a JM |
925 | if( this->motion_mode == MOTION_MODE_CW_ARC ) { |
926 | is_clockwise = true; | |
927 | } | |
aab6cbba AW |
928 | |
929 | // Append arc | |
436a2cd1 | 930 | this->append_arc(gcode, target, offset, radius, is_clockwise ); |
aab6cbba AW |
931 | |
932 | } | |
933 | ||
934 | ||
4710532a JM |
935 | float Robot::theta(float x, float y) |
936 | { | |
937 | float t = atanf(x / fabs(y)); | |
938 | if (y > 0) { | |
939 | return(t); | |
940 | } else { | |
941 | if (t > 0) { | |
942 | return(M_PI - t); | |
943 | } else { | |
944 | return(-M_PI - t); | |
945 | } | |
946 | } | |
4cff3ded AW |
947 | } |
948 | ||
4710532a JM |
949 | void Robot::select_plane(uint8_t axis_0, uint8_t axis_1, uint8_t axis_2) |
950 | { | |
4cff3ded AW |
951 | this->plane_axis_0 = axis_0; |
952 | this->plane_axis_1 = axis_1; | |
953 | this->plane_axis_2 = axis_2; | |
954 | } | |
955 | ||
fae93525 | 956 | void Robot::clearToolOffset() |
4710532a | 957 | { |
fae93525 JM |
958 | memset(this->toolOffset, 0, sizeof(this->toolOffset)); |
959 | } | |
960 | ||
961 | void Robot::setToolOffset(const float offset[3]) | |
962 | { | |
fae93525 | 963 | memcpy(this->toolOffset, offset, sizeof(this->toolOffset)); |
5966b7d0 AT |
964 | } |
965 |