How CrossPad works
These pages explain what happens inside the CrossPad when you play, record, connect and update it. Each page says what a subsystem does, the numbers that matter, and the rules an app author follows. For step-by-step use, the User guide is the place to start; to write an app, see Build an app.
Controls
Section titled “Controls”- Power button: click and hold, and how a click steps back through an app.
- Audio engine: 44.1 kHz: the rate, the block size and the timing rules.
- Sampler engine: how kits play from the SD card, polyphony, and changing kits while you play.
- Pitched kits: one recorded note across all sixteen pads.
- Audio inputs and USB audio: the inputs, monitoring, Mixer presets and what a computer records.
- Recorder and Slicer: takes, loops and kits made from them.
- Songs and bouncing: the Sequencer, Song and Arrange apps on one clock.
Connections
Section titled “Connections”- MIDI clock: following a DAW’s tempo, and the CrossPad’s own clock.
- Bluetooth MIDI: the CrossPad as a wireless MIDI device.
- WiFi: WiFi on demand, saved networks and network mode.
- Files over USB: the SD card as a USB drive, file transfer and the assets partition.
Firmware and apps
Section titled “Firmware and apps”- Firmware updates: two slots, signed packages and automatic rollback.
- Pad controller updates: how the STM32 is updated from the firmware.
- App registry and app manager: how apps get into your firmware.