# SPDX-FileCopyrightText: 2018 Carter Nelson for Adafruit Industries
#
# SPDX-License-Identifier: MIT
"""
`ads1115`
====================================================
CircuitPython driver for 1115 ADCs.
* Author(s): Carter Nelson
"""
import struct
try:
from typing import Dict, List
from typing_extensions import Literal
except ImportError:
pass
# pylint: disable=unused-import
from .ads1x15 import ADS1x15, Mode
# Data sample rates
_ADS1115_CONFIG_DR = {
8: 0x0000,
16: 0x0020,
32: 0x0040,
64: 0x0060,
128: 0x0080,
250: 0x00A0,
475: 0x00C0,
860: 0x00E0,
}
# Pins
P0 = 0
"""Analog Pin 0"""
P1 = 1
"""Analog Pin 1"""
P2 = 2
"""Analog Pin 2"""
P3 = 3
"""Analog Pin 3"""
[docs]
class ADS1115(ADS1x15):
"""Class for the ADS1115 16 bit ADC."""
@property
def bits(self) -> Literal[16]:
"""The ADC bit resolution."""
return 16
@property
def rates(self) -> List[int]:
"""Possible data rate settings."""
r = list(_ADS1115_CONFIG_DR.keys())
r.sort()
return r
@property
def rate_config(self) -> Dict[int, int]:
"""Rate configuration masks."""
return _ADS1115_CONFIG_DR
def _data_rate_default(self) -> Literal[128]:
return 128
def _conversion_value(self, raw_adc: int) -> int:
value = struct.unpack(">h", raw_adc.to_bytes(2, "big"))[0]
return value