fast serial protocol for motor control

fastmotorcontrol

transmit to control
+----------+----------------+--------------------------------------------+
| motor id | motor position | motor flags (braking, locking, reset, etc) |
| 8 bits   | 64 bits        | 8 bits                                     |
+----------+----------------+--------------------------------------------+
|                                                                        |
\______________________________ 80 bits _________________________________/

maybe a status _on query_ (query might be pulling a line high and sending a motor id)
+--------------------+------------------+-----------------+
| motor status flags | current position | target position |
| 8 bits             | 64 bits          | 64 bits         |
+--------------------+------------------+-----------------+
|                                                         |
\________________________ 136 bits _______________________/

STEP and DIR pins could also be provided for GRBL compatibility.