#include "Conveyor.h"
#include "Planner.h"
+// The conveyor holds the queue of blocks, takes care of creating them, and starting the executing chain of blocks
+
Conveyor::Conveyor(){
this->current_block = NULL;
this->looking_for_new_block = false;
register_for_event(ON_IDLE);
}
+// Delete blocks here, because they can't be deleted in interrupt context ( see Block.cpp:release )
void Conveyor::on_idle(void* argument){
- if (flush_blocks){
-
+ while (flush_blocks > 0){
+ // Cleanly delete block
Block* block = queue.get_tail_ref();
- block->gcodes.clear();
- queue.delete_first();
-
+ block->gcodes.clear();
+ queue.delete_tail();
__disable_irq();
flush_blocks--;
__enable_irq();
}
}
+void Conveyor::append_gcode(Gcode* gcode)
+{
+ gcode->mark_as_taken();
+ if (queue.size() == 0)
+ THEKERNEL->call_event(ON_GCODE_EXECUTE, gcode);
+ else
+ queue.get_ref(queue.size() - 1)->append_gcode(gcode);
+}
+
// Append a block to the list
Block* Conveyor::new_block(){
- // Clean up the vector of commands in the block we are about to replace
- // It is quite strange to do this here, we really should do it inside Block->pop_and_execute_gcode
- // but that function is called inside an interrupt and thus can break everything if the interrupt was trigerred during a memory access
-
// Take the next untaken block on the queue ( the one after the last one )
- Block* block = this->queue.get_tail_ref();
+ Block* block = this->queue.get_head_ref();
// Then clean it up
- if( block->conveyor == this ){
- block->gcodes.clear();
- }
+ block->clear();
- // Create a new virgin Block in the queue
- this->queue.push_back(Block());
- block = this->queue.get_ref( this->queue.size()-1 );
- while( block == NULL ){
- block = this->queue.get_ref( this->queue.size()-1 );
- }
- block->is_ready = false;
block->initial_rate = -2;
block->final_rate = -2;
- block->conveyor = this;
-
+
+ // Create a new virgin Block in the queue
+ this->queue.push_back(Block());
+
return block;
}
this->current_block = this->queue.get_ref(0);
// Tell all modules about it
- this->kernel->call_event(ON_BLOCK_BEGIN, this->current_block);
+ THEKERNEL->call_event(ON_BLOCK_BEGIN, this->current_block);
- // In case the module was not taken
+ // In case the module was not taken
if( this->current_block->times_taken < 1 ){
- Block* temp = this->current_block;
- this->current_block = NULL; // It seems this was missing and adding it fixes things, if something breaks, this may be a suspect
- temp->take();
+ Block* temp = this->current_block;
+ this->current_block = NULL; // It seems this was missing and adding it fixes things, if something breaks, this may be a suspect
+ temp->take();
temp->release();
}
}
-void Conveyor::wait_for_queue(int free_blocks)
-{
+// Wait for the queue to have a given number of free blocks
+void Conveyor::wait_for_queue(int free_blocks){
while( this->queue.size() >= this->queue.capacity()-free_blocks ){
- this->kernel->call_event(ON_IDLE);
+ THEKERNEL->call_event(ON_IDLE);
}
}
+// Wait for the queue to be empty
void Conveyor::wait_for_empty_queue(){
while( this->queue.size() > 0){
- this->kernel->call_event(ON_IDLE);
+ THEKERNEL->call_event(ON_IDLE);
}
}
+// Return true if the queue is empty
+bool Conveyor::is_queue_empty(){
+ return (this->queue.size() == 0);
+}
+