Project based on tomtor/ulp-i2c
STLM75 and VEML3328 is connected to GPIO 33 (sda) / 32 (scl) | LED connected at GPIO 2
Don't forget reserve RTC SLOW MEM for ULP program from 2048 bytes to 8Kb max (see ESP32_RM p.27)
Settings at: SDK config->Component Config->ESP32 specific->RTC slow memory reserved for coprocessor