PWM-driven matrix keypad driver for ESP-IDF using row pulse-width encoding and MCPWM capture for simultaneous multi-key detection. Supports multiple keys per column with hardware-assisted decoding.
C++17 callback-first wrapper for MIDI 2.0 on embedded devices, layered over the portable midi2 C99 library. Covers UMP transport (M2-104), MIDI-CI with Appendix E (M2-101), Property Exchange Subscribe/Notify, Profile Configuration, Process Inquiry, Flex Data, and Bit Scaling (M2-115).
Compact fixed-point math library for embedded systems. Integer-only with caller-selectable radix. Trig, log/exp, sqrt, hypot, wave generators, ADSR, and 2D transforms. Zero dependencies.