Implementation

[shooter64738]

My goal is to get CRC added to grbl. This is going to require look ahead in the gcode parser. Currently it needs at least 1 line of look ahead. More would be better. In instances where the next line is not a motion line, grbl will be holding for the next motion. Since the next line was not a motion it would be stuck, unable to calculate the next end point.

I have not had time, nor do I see myself having time in the near future to get this added to grbl. I do however have a working control with a full gcode parser that I can implement on a primary board, sending modified gcode to grbl. If nothing else I will implement it this way so that it will be of use to others.

If someone would like to add the look ahead to the grbl processor I would be much obliged!