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)
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/>.
10 #include "libs/nuts_bolts.h"
11 #include "libs/RingBuffer.h"
12 #include "../communication/utils/Gcode.h"
13 #include "libs/Module.h"
14 #include "libs/Kernel.h"
15 #include "Timer.h" // mbed.h lib
16 #include "wait_api.h" // mbed.h lib
21 // The conveyor holds the queue of blocks, takes care of creating them, and starting the executing chain of blocks
24 this->current_block
= NULL
;
25 this->looking_for_new_block
= false;
29 void Conveyor::on_module_loaded(){
30 register_for_event(ON_IDLE
);
33 // Delete blocks here, because they can't be deleted in interrupt context ( see Block.cpp:release )
34 void Conveyor::on_idle(void* argument
){
36 // Cleanly delete block
37 Block
* block
= queue
.get_tail_ref();
38 block
->gcodes
.clear();
46 // Append a block to the list
47 Block
* Conveyor::new_block(){
49 // Take the next untaken block on the queue ( the one after the last one )
50 Block
* block
= this->queue
.get_tail_ref();
52 if( block
->conveyor
== this ){
53 block
->gcodes
.clear();
56 // Create a new virgin Block in the queue
57 this->queue
.push_back(Block());
58 block
= this->queue
.get_ref( this->queue
.size()-1 );
59 while( block
== NULL
){
60 block
= this->queue
.get_ref( this->queue
.size()-1 );
62 block
->is_ready
= false;
63 block
->initial_rate
= -2;
64 block
->final_rate
= -2;
65 block
->conveyor
= this;
70 // Used by blocks to signal when they are ready to be used by the system
71 void Conveyor::new_block_added(){
72 if( this->current_block
== NULL
){
73 this->pop_and_process_new_block(33);
77 // Process a new block in the queue
78 void Conveyor::pop_and_process_new_block(int debug
){
79 if( this->looking_for_new_block
){ return; }
80 this->looking_for_new_block
= true;
82 if( this->current_block
!= NULL
){ this->looking_for_new_block
= false; return; }
84 // Return if queue is empty
85 if( this->queue
.size() == 0 ){
86 this->current_block
= NULL
;
87 // TODO : ON_QUEUE_EMPTY event
88 this->looking_for_new_block
= false;
93 this->current_block
= this->queue
.get_ref(0);
95 // Tell all modules about it
96 this->kernel
->call_event(ON_BLOCK_BEGIN
, this->current_block
);
98 // In case the module was not taken
99 if( this->current_block
->times_taken
< 1 ){
100 Block
* temp
= this->current_block
;
101 this->current_block
= NULL
; // It seems this was missing and adding it fixes things, if something breaks, this may be a suspect
106 this->looking_for_new_block
= false;
110 // Wait for the queue to have a given number of free blocks
111 void Conveyor::wait_for_queue(int free_blocks
){
112 while( this->queue
.size() >= this->queue
.capacity()-free_blocks
){
113 this->kernel
->call_event(ON_IDLE
);
117 // Wait for the queue to be empty
118 void Conveyor::wait_for_empty_queue(){
119 while( this->queue
.size() > 0){
120 this->kernel
->call_event(ON_IDLE
);