Add gcode.cpp, motion.*, queue.* - Apply to some G-codes.

Marlin/src/gcode/queue.h

@@ -0,0 +1,106 @@
+/**
+ * Marlin 3D Printer Firmware
+ * Copyright (C) 2016 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ *
+ * Based on Sprinter and grbl.
+ * Copyright (C) 2011 Camiel Gubbels / Erik van der Zalm
+ *
+ * This program 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.
+ *
+ * This program 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+/**
+ * queue.h - The G-code command queue, which holds commands before they
+ *           go to the parser and dispatcher.
+ */
+
+#ifndef GCODE_QUEUE_H
+#define GCODE_QUEUE_H
+
+#include "../inc/MarlinConfig.h"
+
+/**
+ * GCode line number handling. Hosts may include line numbers when sending
+ * commands to Marlin, and lines will be checked for sequentiality.
+ * M110 N<int> sets the current line number.
+ */
+extern long gcode_LastN, Stopped_gcode_LastN;
+
+/**
+ * GCode Command Queue
+ * A simple ring buffer of BUFSIZE command strings.
+ *
+ * Commands are copied into this buffer by the command injectors
+ * (immediate, serial, sd card) and they are processed sequentially by
+ * the main loop. The gcode.process_next_command method parses the next
+ * command and hands off execution to individual handler functions.
+ */
+extern uint8_t commands_in_queue, // Count of commands in the queue
+               cmd_queue_index_r; // Ring buffer read position
+
+extern char command_queue[BUFSIZE][MAX_CMD_SIZE];
+
+/**
+ * Initialization of queue for setup()
+ */
+void queue_setup();
+
+/**
+ * Clear the Marlin command queue
+ */
+void clear_command_queue();
+
+/**
+ * Clear the serial line and request a resend of
+ * the next expected line number.
+ */
+void flush_and_request_resend();
+
+/**
+ * Send an "ok" message to the host, indicating
+ * that a command was successfully processed.
+ *
+ * If ADVANCED_OK is enabled also include:
+ *   N<int>  Line number of the command, if any
+ *   P<int>  Planner space remaining
+ *   B<int>  Block queue space remaining
+ */
+void ok_to_send();
+
+/**
+ * Record one or many commands to run from program memory.
+ * Aborts the current queue, if any.
+ * Note: drain_injected_commands_P() must be called repeatedly to drain the commands afterwards
+ */
+void enqueue_and_echo_commands_P(const char * const pgcode);
+
+/**
+ * Enqueue with Serial Echo
+ */
+bool enqueue_and_echo_command(const char* cmd, bool say_ok=false);
+
+/**
+ * Add to the circular command queue the next command from:
+ *  - The command-injection queue (injected_commands_P)
+ *  - The active serial input (usually USB)
+ *  - The SD card file being actively printed
+ */
+void get_available_commands();
+
+/**
+ * Get the next command in the queue, optionally log it to SD, then dispatch it
+ */
+void advance_command_queue();
+
+#endif // GCODE_QUEUE_H