Fixed Homing state bug #790
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Fixed an issue where grbl's state machine gets corrupted. For example, if "$H0abc" is sent, existing grbl sets sys.state=STATE_HOMING, but then bails out without actually homing. Subsequent "$H" commands are then not executed, because grbl isn't idle (it still thinks it's homing).
doppelhub
commented
Jan 7, 2020
| case 'H' : // Perform homing cycle [IDLE/ALARM] | ||
| if (bit_isfalse(settings.flags,BITFLAG_HOMING_ENABLE)) {return(STATUS_SETTING_DISABLED); } | ||
| if (system_check_safety_door_ajar()) { return(STATUS_CHECK_DOOR); } // Block if safety door is ajar. | ||
| sys.state = STATE_HOMING; // Set system state variable |
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sys.state set to homing before actually checking if entire line is valid
doppelhub
commented
Jan 7, 2020
| if (system_check_safety_door_ajar()) { return(STATUS_CHECK_DOOR); } // Block if safety door is ajar. | ||
| sys.state = STATE_HOMING; // Set system state variable | ||
| if (line[2] == 0) { | ||
| sys.state = STATE_HOMING; // Set system state variable |
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here sys.state is not set until after syntax is checked
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Fixed an issue where grbl's state machine gets corrupted. For example, if "$H0abc" is sent, existing grbl sets sys.state=STATE_HOMING, but then bails out without actually homing. Subsequent "$H" commands are then not executed, because grbl isn't idle (it still thinks it's homing).
Moving sys.state=STATE_HOMING to after the conditional prevents grbl from getting stuck in homing state.