Module ads1115 

Texas Instruments ADS1115 16-bit I2C analog-to-digital converter.

The ADS1115 turns an analog signal (a soil-moisture probe, a pH electrode, a divider) into a 16-bit reading, and a single Config register selects the input, the gain, the rate, and the comparator. This module builds and parses that Config register field by field and converts a raw conversion result into a voltage at the selected full-scale range, following the datasheet’s register tables and per-gain LSB sizes.

Modules

register

The ADS1115 register addresses, selected by the address pointer.

Structs

Config

A decoded ADS1115 Config register.

Enums

ComparatorLatch

Whether the comparator latches (Config bit 2).

ComparatorMode

The comparator mode (Config bit 4).

ComparatorPolarity

The ALERT/RDY pin polarity (Config bit 3).

ComparatorQueue

The comparator queue, or disable (Config bits 1:0).

DataRate

The output data rate (Config bits 7:5), in samples per second.

Mode

The conversion mode (Config bit 8).

Mux

The input multiplexer setting (Config bits 14:12).

Pga

The programmable gain amplifier’s full-scale range (Config bits 11:9).

Constants

CONFIG_RESET

The power-on value of the Config register (0x8583).

Functions

to_nanovolts

Converts a raw conversion result to nanovolts at the selected full-scale range.

to_volts

Converts a raw conversion result to volts at the selected full-scale range.