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EXP Connection FAST Serial Protocol reference

FAST Serial Protocol: Overview & First Steps

This documentation section is about the FAST Serial Protocol (FSP) commands, which are the low-level commands a host computer sends to a FAST board. Most FAST Pinball makers do not need to know about these details, since the pinball game framework (such as the Mission Pinball Framework) handles this communication for you.

If you're writing your own game framework, we have a series of programming guides. Also, be sure to read the overview of how FSP works and how to connect first.

General commands

  • BL: Run the expansion board bootloader
  • BR: Reset the expansion board
  • EA: Set the active expansion or breakout board
  • ID: Get the board identifier of an expansion or breakout
  • IH: Get the hardware summary of an expansion or breakout
  • IP: Get the status of a power filter board attached as a breakout
  • IS: Get the serial number of an expansion or breakout

Configuration commands

These commands give human readable summaries of the status of boards on the expansion bus.

  • CB: Status of configured breakouts
  • CD: Status of configured drivers
  • CM: Status of configured motors
  • CP: Status of power controller
  • CR: Status of configured LED ports

Motor commands

These commands apply to all types of motors, including servos, steppers, and DC motors.

  • EM: Configure motor settings
  • MB: Actively brake motor
  • MC: Coast / passively stop motor
  • MF: Run motor forward
  • ML: Run motor forward to limit switch
  • MH: Run motor in reverse to home switch
  • MP: Move the motor to a specific position
  • MR: Run motor in reverse
  • MS: Get motor status

LED commands

  • ER: Configure a LED port
  • L1: Enable or disable individual LED without modifying color
  • L8: Enable or disable an 8 LED block without modifying color
  • LA: Enable or disable all LEDs on an expansion or breakout board without modifying color
  • LC: Clear masked LEDs to off without modifying color
  • LD: Enable or disable LED block without modifying color, binary version
  • LM: Map LEDs into group for combined control
  • LS: Set masked LEDs to on without modifying color
  • RA: Set all LEDs on an expansion or breakout board to a certain color
  • RB: Set multiple LEDs to a single color, binary version
  • RC: Set LEDs to a color from a lookup table
  • RD: Set individual LEDs to be a certain color, binary version
  • RF: Set the default fade rate for all LEDs on an expansion board
  • RI: Set LEDs to a color from a lookup table, binary version
  • RL: Set individual LEDs to fade to a certain color, binary version
  • RP: Set multiple LEDs to a single color
  • RS: Set individual LEDs to be a certain color
  • RT: Set color table entries
  • RW: Set RGBW color white channel
  • RZ: Set RGBW color white channel, binary version

EXP Show Scripting

EXP Show Scripting commands were added in firmware version 0.10. Refer to the EXP show programming guide for details on how to use these commands.

  • ES: Set EXP show in user memory
  • ET: Set show trigger in user memory
  • EW: Write show or trigger block to persistent flash storage
  • TS: Trigger EXP Show

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