AS: Set Subwoofer Volume¶
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.
AS: command is used to set the subwoofer volume of the FAST Audio Interface Board. The volume level is a value between
0x3f (decimal 0-63). The mode of the audio system can affect the subwoofer behavior. See the
AM: command for details. Depending on the mode set, the subwoofer can be disabled or do automatic crossfade when the headphones are plugged in.
Data is a a volume value from
The return value is the same as what was passed in.
AS:18<CR> will return
AS:18<CR>, confirming the subwoofer volume was set to 18 hex, which is 24 decimal, or about 38% volume (24/63).
If the mode of the subwoofer is set to
AM: command) the set subwoofer volume will increase or decrease over time based on the new settings.
Documentation Feedback? Requests? Confused?
Hi! I'm Brian, and I'm responsible for the documentation at FAST Pinball. If you have any feedback, requests, corrections, ideas, or any other thoughts about the docs, please let me know!
You can email me at firstname.lastname@example.org. I maintain this site in my spare time, so there might be a week or so delay if you email me.
If you have a more pressing need, reach out to us via Slack, or email Aaron Davis.
N or > jump the next page, P or < for previous, search with S or ?