jesgome

Included functions for analog input buffer activation and differential mode; control with 0,1 input; tested and confirmed to work on RPi4+

For DAC8532.py - Changed max voltage reference to 5V for max write capability. Removed config reference to clean file. Included - Prior pull requests merged to my fork for ADS1256.py...

Update allows compiling with python3, removes "import time" module from prior artifacts, fixes 5V for LEDs, and sets LED voltage to 0 after completing run to ensure LEDs turn off.

According to the technical data sheets from Texas Instruments, the ADS1256 should be able to activate a high impedance input buffer for measurements. [See here on page 15 and throughout.](https://www.ti.com/lit/ds/sbas288k/sbas288k.pdf?ts=1649970168392&ref_url=https%253A%252F%252Fwww.google.com%252F)...