TinyGPS++ — compact NMEA-0183 parser ported to ESP-IDF. No Arduino dependency. millis() is implemented via esp_timer_get_time(). Parses GGA and RMC sentences; exposes location, date, time, speed, course, altitude, satellite count, HDOP, and arbitrary custom terms.
Field Oriented Control (FOC) library for PMSM/BLDC motors on ESP32. Motor driving and torque loop; velocity/position loops are implemented by the application via regulation callback.