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"
20 this->current_block
= NULL
;
21 this->looking_for_new_block
= false;
24 // Append a block to the list
25 Block
* Player::new_block(){
27 // Clean up the vector of commands in the block we are about to replace
28 // It is quite strange to do this here, we really should do it inside Block->pop_and_execute_gcode
29 // but that function is called inside an interrupt and thus can break everything if the interrupt was trigerred during a memory access
30 //Block* block = this->queue.get_ref( this->queue.size()-1 );
31 Block
* block
= this->queue
.get_ref( this->queue
.size() );
32 if( block
->player
== this ){
33 for(short index
=0; index
<block
->gcodes
.size(); index
++){
34 block
->gcodes
.pop_back();
38 // Create a new virgin Block in the queue
39 this->queue
.push_back(Block());
40 block
= this->queue
.get_ref( this->queue
.size()-1 );
41 block
->is_ready
= false;
42 block
->initial_rate
= -2;
43 block
->final_rate
= -2;
49 // Used by blocks to signal when they are ready to be used by the system
50 void Player::new_block_added(){
51 if( this->current_block
== NULL
){
52 this->pop_and_process_new_block(33);
56 // Process a new block in the queue
57 void Player::pop_and_process_new_block(int debug
){
58 if( this->looking_for_new_block
){ return; }
59 this->looking_for_new_block
= true;
61 if( this->current_block
!= NULL
){ this->looking_for_new_block
= false; return; }
63 // Return if queue is empty
64 if( this->queue
.size() == 0 ){
65 this->current_block
= NULL
;
66 // TODO : ON_QUEUE_EMPTY event
67 this->looking_for_new_block
= false;
72 this->current_block
= this->queue
.get_ref(0);
74 // Tell all modules about it
75 this->kernel
->call_event(ON_BLOCK_BEGIN
, this->current_block
);
77 // In case the module was not taken
78 if( this->current_block
->times_taken
< 1 ){
79 this->looking_for_new_block
= false;
80 this->current_block
->release();
83 this->looking_for_new_block
= false;
87 void Player::wait_for_queue(int free_blocks
){
88 while( this->queue
.size() >= this->queue
.capacity()-free_blocks
){
91 this->kernel
->call_event(ON_IDLE
);
94 wait_us(500 - t
.read_us());