Release v6.0

See the files INSTALL.md and README.md in the attached archive for info.

Changes from previous release

• Support for Raspberry Pi 5 (USB audio devices only)
• Support 24-bit USB audio
• Support devices with more than 2 USB audio channels
  (additional channels are quiet)
• Input MIDI channel configurable in GUI
• Fixed some USB audio issues

Release v5.0

See the files INSTALL.md and README.md in the attached archive for info.

Changes from previous release

• Update GUI to use LVGL v8.3.3, modified look
• Uniform kernel image for PWM, I2S and USB interfaces
• Sound device is selected with option sounddev=snd{pwm|i2s|usb}
• Support for USB audio streaming devices (Raspberry Pi 4 only)
• Support I2S with WM8960 DAC
• Allow to use two USB MIDI controllers at once
• Support USB MIDI controllers, which use interrupt endpoints
• Support USB HID devices, which require to set the configuration before reading the HID descriptor

Release v4.1

See the files INSTALL.md and README.md in the attached archive for info.

Changes from previous release

• Raspberry Pi Zero 2 W supported (I2S only)
• Fix two issues with USB PC keyboards

Release v4.0

See the files INSTALL.md and README.md in the attached archive for info.

Changes from previous release

• GUI: Rewritten based on LVGL v7.11.0 using tab view
• GUI: Support variable screen size up to 1920x1080 (auto-detected)
• GUI: Can enter precise parameter values using a screen keyboard
• GUI: Patch properties (name, author, comment) are saved to the patch file
• GUI: Support repeat function for Up/Down buttons
• Add second detune-able VCO
• Add waveform "Noise" to VCO
• Add reverb effect section
• Number of patches increased to 48
• Patches may be saved to the /patches/ subdirectory
• Supported USB devices can be attached or removed at any time (USB PnP)
• USB HID-class digitizer touchscreen support
• More I2S DACs supported (PCM5122, UDA1334A)
• Raspberry Pi 400 supported
• Make MIDI CC mapping configurable (#12)
• Decrease start time to GUI appearance
• FIXED: USB MIDI keyboard could have stopped working on RPi 1 (#6)
• Needs cmdline.txt with "logdev=null" in any case

Release v3.0

See the files INSTALL.md and README.md in the attached archive for info.

Changes from previous release

• Major fix to the function of VCF and VCA LFOs
• "Last note priority" is default now
• Support for MIDI program change
• Support for MIDI CC 71 (VCF resonance) and 74 (VCF cutoff freq)
• Support for MIDI CC 7 (Master volume)
• Log output can be suppressed with "logdev=null" in cmdline.txt
• Workaround "usbspeed=full" for lost notes in cmdline.txt
• Additional example patches (by Baggypants)

Release v2.0

See the files INSTALL.md and README.md in the attached archive for info.

Changes from previous release

• Raspberry Pi 4 Model B supported
• Serial MIDI RX via GPIO15 supported
• Use math functions from toolchain now
• Can configure for AArch64 build now

Initial release

See the files INSTALL.md and README.md in the attached archive for info.