mcp3008.py

# The MIT License (MIT)
#
# Copyright (c) 2018 Brent Rubell for Adafruit
#
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"""
:py:class:`~adafruit_mcp3xxx.mcp3008.MCP3008`
=============================================================
MCP3008 8-channel, 10-bit, analog-to-digital
converter instance.

* Author(s): Brent Rubell
"""

from .mcp3xxx import MCP3xxx

# MCP3008 Pin Mapping
P0 = 0
P1 = 1
P2 = 2
P3 = 3
P4 = 4
P5 = 5
P6 = 6
P7 = 7

class MCP3008(MCP3xxx):

    """
    MCP3008 Differential channel mapping.
        - 0: CH0 = IN+, CH1 = IN-
        - 1: CH1 = IN+, CH0 = IN-
        - 2: CH2 = IN+, CH3 = IN-
        - 3: CH3 = IN+, CH2 = IN-
        - 4: CH4 = IN+, CH5 = IN-
        - 5: CH5 = IN+, CH4 = IN-
        - 6: CH6 = IN+, CH7 = IN-
        - 7: CH7 = IN+, CH6 = IN-
    """
    DIFF_PINS = {
        (0, 1) : P0,
        (1, 0) : P1,
        (2, 3) : P2,
        (3, 2) : P3,
        (4, 5) : P4,
        (5, 4) : P5,
        (6, 7) : P6,
        (7, 6) : P7
    }