v1.2.7 Updates:
- New GPIO Utility Functions: Added pinPWM(), pinADC(), pinRead(), and pinWrite() functions to simplify GPIO configuration.
- Improved Schematic: Updated the schematic with missing values filled in and enhanced resolution for better clarity.
- Battery Measurement: Implemented an averaging filter for more stable battery readings when loaded current.
- Sampling Frequency Adjustment: Increased the minimum sampling frequency limit to 1Hz.
- USB Charging Improvement: Introduced the USBChargeState() function to optionally keep CodeCell awake while charging.