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@ -426,6 +426,26 @@ static uint8_t target_extruder;
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int lpq_len = 20;
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#endif
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#if ENABLED(HOST_KEEPALIVE_FEATURE)
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// States for managing Marlin and host communication
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// Marlin sends messages if blocked or busy
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enum MarlinBusyState {
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NOT_BUSY, // Not in a handler
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IN_HANDLER, // Processing a GCode
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IN_PROCESS, // Known to be blocking command input (as in G29)
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PAUSED_FOR_USER, // Blocking pending any input
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PAUSED_FOR_INPUT // Blocking pending text input (concept)
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};
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static MarlinBusyState busy_state = NOT_BUSY;
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static millis_t next_busy_signal_ms = -1;
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#define KEEPALIVE_STATE(n) do{ busy_state = n; }while(0)
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#else
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#define host_keepalive() ;
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#define KEEPALIVE_STATE(n) ;
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#endif // HOST_KEEPALIVE_FEATURE
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//===========================================================================
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//================================ Functions ================================
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//===========================================================================
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@ -2130,6 +2150,35 @@ void unknown_command_error() {
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SERIAL_ECHOPGM("\"\n");
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}
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#if ENABLED(HOST_KEEPALIVE_FEATURE)
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void host_keepalive() {
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millis_t ms = millis();
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if (busy_state != NOT_BUSY) {
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if (ms < next_busy_signal_ms) return;
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switch (busy_state) {
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case NOT_BUSY:
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break;
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case IN_HANDLER:
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case IN_PROCESS:
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SERIAL_ECHO_START;
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SERIAL_ECHOLNPGM(MSG_BUSY_PROCESSING);
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break;
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case PAUSED_FOR_USER:
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SERIAL_ECHO_START;
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SERIAL_ECHOLNPGM(MSG_BUSY_PAUSED_FOR_USER);
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break;
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case PAUSED_FOR_INPUT:
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SERIAL_ECHO_START;
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SERIAL_ECHOLNPGM(MSG_BUSY_PAUSED_FOR_INPUT);
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break;
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}
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}
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next_busy_signal_ms = ms + 2000UL;
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}
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#endif //HOST_KEEPALIVE_FEATURE
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/**
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* G0, G1: Coordinated movement of X Y Z E axes
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*/
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@ -3219,6 +3268,8 @@ inline void gcode_G28() {
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st_synchronize();
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#endif
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KEEPALIVE_STATE(IN_HANDLER);
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#if ENABLED(DEBUG_LEVELING_FEATURE)
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if (marlin_debug_flags & DEBUG_LEVELING) {
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SERIAL_ECHOLNPGM("<<< gcode_G29");
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@ -3325,12 +3376,16 @@ inline void gcode_G92() {
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refresh_cmd_timeout();
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if (codenum > 0) {
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codenum += previous_cmd_ms; // wait until this time for a click
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KEEPALIVE_STATE(PAUSED_FOR_USER);
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while (millis() < codenum && !lcd_clicked()) idle();
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KEEPALIVE_STATE(IN_HANDLER);
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lcd_ignore_click(false);
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}
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else {
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if (!lcd_detected()) return;
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KEEPALIVE_STATE(PAUSED_FOR_USER);
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while (!lcd_clicked()) idle();
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KEEPALIVE_STATE(IN_HANDLER);
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}
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if (IS_SD_PRINTING)
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LCD_MESSAGEPGM(MSG_RESUMING);
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@ -4963,6 +5018,8 @@ inline void gcode_M303() {
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if (e >=0 && e < EXTRUDERS)
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target_extruder = e;
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KEEPALIVE_STATE(NOT_BUSY);
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PID_autotune(temp, e, c);
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}
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@ -5412,6 +5469,7 @@ inline void gcode_M503() {
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delay(100);
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LCD_ALERTMESSAGEPGM(MSG_FILAMENTCHANGE);
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millis_t next_tick = 0;
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KEEPALIVE_STATE(WAIT_FOR_USER);
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while (!lcd_clicked()) {
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#if DISABLED(AUTO_FILAMENT_CHANGE)
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millis_t ms = millis();
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@ -5419,9 +5477,7 @@ inline void gcode_M503() {
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lcd_quick_feedback();
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next_tick = ms + 2500; // feedback every 2.5s while waiting
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}
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manage_heater();
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manage_inactivity(true);
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lcd_update();
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idle(true);
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#else
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current_position[E_AXIS] += AUTO_FILAMENT_CHANGE_LENGTH;
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destination[E_AXIS] = current_position[E_AXIS];
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@ -5429,6 +5485,7 @@ inline void gcode_M503() {
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st_synchronize();
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#endif
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} // while(!lcd_clicked)
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KEEPALIVE_STATE(IN_HANDLER);
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lcd_quick_feedback(); // click sound feedback
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#if ENABLED(AUTO_FILAMENT_CHANGE)
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@ -5765,6 +5822,8 @@ void process_next_command() {
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seen_pointer = current_command;
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codenum = code_value_short();
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KEEPALIVE_STATE(IN_HANDLER);
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// Handle a known G, M, or T
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switch (command_code) {
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case 'G': switch (codenum) {
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@ -6286,6 +6345,8 @@ void process_next_command() {
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default: code_is_good = false;
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}
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KEEPALIVE_STATE(NOT_BUSY);
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ExitUnknownCommand:
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// Still unknown command? Throw an error
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@ -6972,9 +7033,18 @@ void disable_all_steppers() {
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/**
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* Standard idle routine keeps the machine alive
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*/
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void idle() {
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void idle(
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#if ENABLED(FILAMENTCHANGEENABLE)
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bool no_stepper_sleep/*=false*/
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#endif
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) {
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manage_heater();
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manage_inactivity();
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manage_inactivity(
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#if ENABLED(FILAMENTCHANGEENABLE)
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no_stepper_sleep
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#endif
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);
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host_keepalive();
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lcd_update();
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}
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Scott Lahteine
10 years ago