15. MIDI Trigger
<div><center>![](https://www.showdoc.cc/server/api/attachment/visitfile/sign/c05f00d9c7e909516aa8b3c7b37309de?showdoc=.jpg)</center></div>
<p>AIRSTEP's Legacy MIDI input interface, USB, Bluetooth can receive MIDI message input. AIRSTEP can use a specific MIDI message from any MIDI IN as a "trigger message". After detecting the "trigger message" input, AIRSTEP can immediately output MIDI messages, HID messages or Relay messages, or trigger the Device Command, and up to 8 messages can be sent by MIDI Trigger, to achieve the same function AIRSTEP’s footswitches.</p>
<p>For example, you can connect a traditional MIDI foot controller to AIRSTEP as an extended pedal. When AIRSTEP detects a specific MIDI "trigger message" input from the controller, it could immediately send a custom HID message to control the Play/Pause of the player on the computer. It is a result of setting the MIDI Trigger to send HID messages. Therefore, the MIDI Trigger function turns the traditional MIDI foot controller into a Bluetooth computer keyboard.</p>
<div><center>![](https://www.showdoc.cc/server/api/attachment/visitfile/sign/2e44e532377a034f435f2759e6e61700?showdoc=.jpg)</center></div>
<p>The parameter with Trigger is the trigger message setting. Trigger Type is the message type for trigger message. You can select MIDI PC or MIDI CC for triggering. After setting the trigger PC or CC comMand, the MIDI IN of AIRSTEP can send the specific message or messages after receiving this specific trigger message. Below the trigger message settings are the messages sent settings after triggered. For details, see: <a href="#C2">2. Message types sent by AIRSTEP</a>,<a href="#C11">11. Edit messages</a>,and <a href="#C12">12. Device command</a>。</p>