This version of the famous Grbl adds values in the work-coordinate-system (WCS) to the probing command. See x2grbl why you might want this.

main.c 3.5KB

    /* main.c - An embedded CNC Controller with rs274/ngc (g-code) support Part of Grbl v0.9 Copyright (c) 2012-2014 Sungeun K. Jeon Grbl 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. Grbl 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 Grbl. If not, see <>. */ /* This file is based on work from Grbl v0.8, distributed under the terms of the MIT-license. See COPYING for more details. Copyright (c) 2009-2011 Simen Svale Skogsrud Copyright (c) 2011-2012 Sungeun K. Jeon */ #include "system.h" #include "serial.h" #include "settings.h" #include "protocol.h" #include "gcode.h" #include "planner.h" #include "stepper.h" #include "spindle_control.h" #include "coolant_control.h" #include "motion_control.h" #include "limits.h" #include "probe.h" #include "report.h" // Declare system global variable structure system_t sys; int main(void) { // Initialize system upon power-up. serial_init(); // Setup serial baud rate and interrupts settings_init(); // Load grbl settings from EEPROM stepper_init(); // Configure stepper pins and interrupt timers system_init(); // Configure pinout pins and pin-change interrupt memset(&sys, 0, sizeof(sys)); // Clear all system variables sys.abort = true; // Set abort to complete initialization sei(); // Enable interrupts // Check for power-up and set system alarm if homing is enabled to force homing cycle // by setting Grbl's alarm state. Alarm locks out all g-code commands, including the // startup scripts, but allows access to settings and internal commands. Only a homing // cycle '$H' or kill alarm locks '$X' will disable the alarm. // NOTE: The startup script will run after successful completion of the homing cycle, but // not after disabling the alarm locks. Prevents motion startup blocks from crashing into // things uncontrollably. Very bad. #ifdef HOMING_INIT_LOCK if (bit_istrue(settings.flags,BITFLAG_HOMING_ENABLE)) { sys.state = STATE_ALARM; } #endif // Grbl initialization loop upon power-up or a system abort. For the latter, all processes // will return to this loop to be cleanly re-initialized. for(;;) { // TODO: Separate configure task that require interrupts to be disabled, especially upon // a system abort and ensuring any active interrupts are cleanly reset. // Reset Grbl primary systems. serial_reset_read_buffer(); // Clear serial read buffer gc_init(); // Set g-code parser to default state spindle_init(); coolant_init(); limits_init(); probe_init(); plan_reset(); // Clear block buffer and planner variables st_reset(); // Clear stepper subsystem variables. // Sync cleared gcode and planner positions to current system position. plan_sync_position(); gc_sync_position(); // Reset system variables. sys.abort = false; sys.execute = 0; if (bit_istrue(settings.flags,BITFLAG_AUTO_START)) { sys.auto_start = true; } else { sys.auto_start = false; } // Start Grbl main loop. Processes program inputs and executes them. protocol_main_loop(); } return 0; /* Never reached */ }