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/**
* Marlin 3D Printer Firmware
* Copyright (c) 2020 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 <https://www.gnu.org/licenses/>.
*
*/
#pragma once
/**
* e_parser.h - Intercept special commands directly in the serial stream
*/
#include "../inc/MarlinConfigPre.h"
#if ENABLED(HOST_PROMPT_SUPPORT)
#include "host_actions.h"
#endif
// External references
extern bool wait_for_user, wait_for_heatup;
class EmergencyParser {
public:
// Currently looking for: M108, M112, M410, M876
enum State : char {
EP_RESET,
EP_N,
EP_M,
EP_M1,
EP_M10,
EP_M108,
EP_M11,
EP_M112,
EP_M4,
EP_M41,
EP_M410,
#if ENABLED(HOST_PROMPT_SUPPORT)
EP_M8,
EP_M87,
EP_M876,
EP_M876S,
EP_M876SN,
#endif
EP_IGNORE // to '\n'
};
static bool killed_by_M112;
static bool quickstop_by_M410;
#if ENABLED(HOST_PROMPT_SUPPORT)
static uint8_t M876_reason;
#endif
EmergencyParser() { enable(); }
FORCE_INLINE static void enable() { enabled = true; }
FORCE_INLINE static void disable() { enabled = false; }
FORCE_INLINE static void update(State &state, const uint8_t c) {
switch (state) {
case EP_RESET:
switch (c) {
case ' ': case '\n': case '\r': break;
case 'N': state = EP_N; break;
case 'M': state = EP_M; break;
default: state = EP_IGNORE;
}
break;
case EP_N:
switch (c) {
case '0' ... '9':
case '-': case ' ': break;
case 'M': state = EP_M; break;
default: state = EP_IGNORE;
}
break;
case EP_M:
switch (c) {
case ' ': break;
case '1': state = EP_M1; break;
case '4': state = EP_M4; break;
#if ENABLED(HOST_PROMPT_SUPPORT)
case '8': state = EP_M8; break;
#endif
default: state = EP_IGNORE;
}
break;
case EP_M1:
switch (c) {
case '0': state = EP_M10; break;
case '1': state = EP_M11; break;
default: state = EP_IGNORE;
}
break;
case EP_M10:
state = (c == '8') ? EP_M108 : EP_IGNORE;
break;
case EP_M11:
state = (c == '2') ? EP_M112 : EP_IGNORE;
break;
case EP_M4:
state = (c == '1') ? EP_M41 : EP_IGNORE;
break;
case EP_M41:
state = (c == '0') ? EP_M410 : EP_IGNORE;
break;
#if ENABLED(HOST_PROMPT_SUPPORT)
case EP_M8:
state = (c == '7') ? EP_M87 : EP_IGNORE;
break;
case EP_M87:
state = (c == '6') ? EP_M876 : EP_IGNORE;
break;
case EP_M876:
switch (c) {
case ' ': break;
case 'S': state = EP_M876S; break;
default: state = EP_IGNORE; break;
}
break;
case EP_M876S:
switch (c) {
case ' ': break;
case '0' ... '9':
state = EP_M876SN;
M876_reason = (uint8_t)(c - '0');
break;
}
break;
#endif
case EP_IGNORE:
if (ISEOL(c)) state = EP_RESET;
break;
default:
if (ISEOL(c)) {
if (enabled) switch (state) {
case EP_M108: wait_for_user = wait_for_heatup = false; break;
case EP_M112: killed_by_M112 = true; break;
case EP_M410: quickstop_by_M410 = true; break;
#if ENABLED(HOST_PROMPT_SUPPORT)
case EP_M876SN: host_response_handler(M876_reason); break;
#endif
default: break;
}
state = EP_RESET;
}
}
}
private:
static bool enabled;
};
extern EmergencyParser emergency_parser;
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