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ElocNG-Firmware

This repository contains a PlatformIO project implementing the ULP stage of the Eloc-NG detector.

Functionality:

  • The device boots to the main CPU code (main.c) where it sets the ADC threshold variables. Then it starts the ULP code.

  • The ULP code (main.S) samples the ADC and whenever the value falls outside the lower or upper thresholds, it awakes the main CPU code.

  • As long as the ADC does not go off the threshold values, the ULP code keeps running.

Important things to note:

  • It only samples the ADC pin 34. This pin needs to be set in both the main.c and main.S files.

  • Instead of comparing a single ADC value, the main.S code takes multiple samples and average it before comparing with thresholds. The number of ADC samples to take before averaging is defined in the variable adc_oversampling_factor_log.