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107 lines
3.1 KiB
C
107 lines
3.1 KiB
C
7 years ago
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/**
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* Marlin 3D Printer Firmware
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* Copyright (C) 2016 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
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*
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* Based on Sprinter and grbl.
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* Copyright (C) 2011 Camiel Gubbels / Erik van der Zalm
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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*/
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/**
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* queue.h - The G-code command queue, which holds commands before they
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* go to the parser and dispatcher.
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*/
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#ifndef GCODE_QUEUE_H
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#define GCODE_QUEUE_H
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#include "../inc/MarlinConfig.h"
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/**
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* GCode line number handling. Hosts may include line numbers when sending
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* commands to Marlin, and lines will be checked for sequentiality.
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* M110 N<int> sets the current line number.
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*/
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extern long gcode_LastN, Stopped_gcode_LastN;
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/**
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* GCode Command Queue
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* A simple ring buffer of BUFSIZE command strings.
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*
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* Commands are copied into this buffer by the command injectors
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* (immediate, serial, sd card) and they are processed sequentially by
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* the main loop. The gcode.process_next_command method parses the next
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* command and hands off execution to individual handler functions.
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*/
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extern uint8_t commands_in_queue, // Count of commands in the queue
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cmd_queue_index_r; // Ring buffer read position
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extern char command_queue[BUFSIZE][MAX_CMD_SIZE];
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/**
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* Initialization of queue for setup()
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*/
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void queue_setup();
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/**
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* Clear the Marlin command queue
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*/
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void clear_command_queue();
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/**
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* Clear the serial line and request a resend of
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* the next expected line number.
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*/
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void flush_and_request_resend();
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/**
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* Send an "ok" message to the host, indicating
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* that a command was successfully processed.
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*
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* If ADVANCED_OK is enabled also include:
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* N<int> Line number of the command, if any
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* P<int> Planner space remaining
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* B<int> Block queue space remaining
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*/
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void ok_to_send();
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/**
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* Record one or many commands to run from program memory.
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* Aborts the current queue, if any.
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* Note: drain_injected_commands_P() must be called repeatedly to drain the commands afterwards
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*/
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void enqueue_and_echo_commands_P(const char * const pgcode);
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/**
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* Enqueue with Serial Echo
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*/
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bool enqueue_and_echo_command(const char* cmd, bool say_ok=false);
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/**
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* Add to the circular command queue the next command from:
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* - The command-injection queue (injected_commands_P)
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* - The active serial input (usually USB)
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* - The SD card file being actively printed
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*/
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void get_available_commands();
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/**
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* Get the next command in the queue, optionally log it to SD, then dispatch it
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*/
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void advance_command_queue();
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#endif // GCODE_QUEUE_H
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