20220318

• added writing to file in SD Card library
• added Mutable Instruments’ Braids, Plaits, and Clouds as nodes
• cleaned up events. now events received with event_receive(event,data) can be parsed with encoder_event(data), mouse_event(data) or keyboard_event(data) ( e.g encoder_event(data).index )
• NodeEnvelope now has a start value. stages are added with add_stage(duration,value) i.e the value of the last stage is the end value of an envelope
• OSC support in emulator can now be en-/disabled in Ardunio IDE
• added bitmap converter tool ( in ./tools/ImageConverter888_565 ) for display library
• added font editor tool ( in ./tools/Font565Editor ) for display library
• added KLST_SHEEP to documentation
• updated STM32duino to v2.2.0
• cleaned up + rearranged examples
• deprecated USB device support ( via TinyUSB library )
• added syntax coloring for klangstrom keywords
• NodeVCOWavetable + NodeSampler now support 5 different data types: 8/16-bit un/signed integers and 32-bit floats ( i.e uint8_t, int8_t, uint16_t, int16_t + float )
• added NodeKernelBlockMulti with ( theoretically ) up to 256 input and output channels. ( NodeKernel* classes assist in the development of custom nodes )
• added option to select target board in emulator
• LEDs can now be turned on, off or toggled from one function (LED(ID,STATE) where state can be LED_ON, LED_OFF or LED_TOGGLE )
• added TaskScheduler to easily created time-based callbacks
• added encoder support to emulator (SDL)
• added WAV file parser ( e.g for SD Card )
• added SD Card support to emulator (SDL)
• added native SD Card support for KLST_SHEEP
• added display support to emulator (SDL)
• added native display support for KLST_SHEEP ( incl. drawing primitives, fonts and bitmaps )
• added KLST_SHEEP board
• added option to select sampling rate and audio block size in Arduino IDE
• added NodeFFT to perform Fast Fourier Transfom on audio signals
• added Strom to repository ( still WIP )
• added USB Host support for Mouse + Keyboard + MIDI ( i.e boards can now host USB devices like e.g MIDI keyboards )
• added USB Device support for Mouse + Keyboard + MIDI ( i.e boards can now act as USB devices )
• unique board ID is now represented as single string ( klangstrom::U_ID() )
• added KLST_CORE board
• NodeDelay maximum delay ( line ) length can now be globally configured ( #define NODE_DELAY_BUFFER_SIZE BUFFER_SIZE_IN_SAMPLES )
• added Klang source code to documentation
• added support and examples for SD Cards

20210614

• NodeADSR+ NodeRamp + NodeEnvelope can now be triggered by an input channel signal
• NodeADSR+ NodeRamp + NodeEnvelope now also accept microsecond values ( and use them internally as well )
• NodeSampler now works with different data types ( float, uint8_t and uint16_t )
• speed of serial port ( SERIAL_00 + SERIAL_01 ) is now an option
• NodeTextToSpeechSAM now has a customizable buffer size
• NodeVCOWavetable can now share wavetable data
• added NodeRamp for linear value interpolation
• improved + fixed mixer nodes ( there are now static mixers for 4–32 channels and one node with multiple channels plus 2 stereo versions )
• added mechanism to measure performance of code blocks ( in clock cycles or μs )
• fixed intial encoder button states
• set MCU speed to 180MHz ( from 90MHz )
• added tool to generate sample files
• improved NodeWavetable speed by 4.5×
• boards have now unique identifiers ID() ( based on their hardware serial number )
• added application to examples ( drum machine + sequencer )
• added documentation ( e.g node library )
• fixed DFU mode ( USB peripherals had to be deinitialized before reset )
• added desktop simulator (SDL)
• added extensions ( i.e reverb, vocoder + TTS )
• cleaned up and improved examples