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authorCody Hiar <codyfh@gmail.com>2018-05-27 15:29:21 -0600
committerCody Hiar <codyfh@gmail.com>2018-05-27 15:29:21 -0600
commitceec171c42bd79f1762b971569e20ead656f4fd0 (patch)
tree1880be0b1cef9786be5bc818cbd50095cd797a6d /Adafruit_Python_MCP3008/Adafruit_MCP3008/MCP3008.py
parent611a8b7be4331e4f8416c4d10a0be47a109b47e4 (diff)
Moving libs into separate own directory
Diffstat (limited to 'Adafruit_Python_MCP3008/Adafruit_MCP3008/MCP3008.py')
-rw-r--r--Adafruit_Python_MCP3008/Adafruit_MCP3008/MCP3008.py92
1 files changed, 0 insertions, 92 deletions
diff --git a/Adafruit_Python_MCP3008/Adafruit_MCP3008/MCP3008.py b/Adafruit_Python_MCP3008/Adafruit_MCP3008/MCP3008.py
deleted file mode 100644
index 027cec7..0000000
--- a/Adafruit_Python_MCP3008/Adafruit_MCP3008/MCP3008.py
+++ /dev/null
@@ -1,92 +0,0 @@
-# Copyright (c) 2016 Adafruit Industries
-# Author: Tony DiCola
-#
-# Permission is hereby granted, free of charge, to any person obtaining a copy
-# of this software and associated documentation files (the "Software"), to deal
-# in the Software without restriction, including without limitation the rights
-# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-# copies of the Software, and to permit persons to whom the Software is
-# furnished to do so, subject to the following conditions:
-#
-# The above copyright notice and this permission notice shall be included in
-# all copies or substantial portions of the Software.
-#
-# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
-# THE SOFTWARE.
-import Adafruit_GPIO as GPIO
-import Adafruit_GPIO.SPI as SPI
-
-
-class MCP3008(object):
- """Class to represent an Adafruit MCP3008 analog to digital converter.
- """
-
- def __init__(self, clk=None, cs=None, miso=None, mosi=None, spi=None, gpio=None):
- """Initialize MAX31855 device with software SPI on the specified CLK,
- CS, and DO pins. Alternatively can specify hardware SPI by sending an
- Adafruit_GPIO.SPI.SpiDev device in the spi parameter.
- """
- self._spi = None
- # Handle hardware SPI
- if spi is not None:
- self._spi = spi
- elif clk is not None and cs is not None and miso is not None and mosi is not None:
- # Default to platform GPIO if not provided.
- if gpio is None:
- gpio = GPIO.get_platform_gpio()
- self._spi = SPI.BitBang(gpio, clk, mosi, miso, cs)
- else:
- raise ValueError('Must specify either spi for for hardware SPI or clk, cs, miso, and mosi for softwrare SPI!')
- self._spi.set_clock_hz(1000000)
- self._spi.set_mode(0)
- self._spi.set_bit_order(SPI.MSBFIRST)
-
- def read_adc(self, adc_number):
- """Read the current value of the specified ADC channel (0-7). The values
- can range from 0 to 1023 (10-bits).
- """
- assert 0 <= adc_number <= 7, 'ADC number must be a value of 0-7!'
- # Build a single channel read command.
- # For example channel zero = 0b11000000
- command = 0b11 << 6 # Start bit, single channel read
- command |= (adc_number & 0x07) << 3 # Channel number (in 3 bits)
- # Note the bottom 3 bits of command are 0, this is to account for the
- # extra clock to do the conversion, and the low null bit returned at
- # the start of the response.
- resp = self._spi.transfer([command, 0x0, 0x0])
- # Parse out the 10 bits of response data and return it.
- result = (resp[0] & 0x01) << 9
- result |= (resp[1] & 0xFF) << 1
- result |= (resp[2] & 0x80) >> 7
- return result & 0x3FF
-
- def read_adc_difference(self, differential):
- """Read the difference between two channels. Differential should be a
- value of:
- - 0: Return channel 0 minus channel 1
- - 1: Return channel 1 minus channel 0
- - 2: Return channel 2 minus channel 3
- - 3: Return channel 3 minus channel 2
- - 4: Return channel 4 minus channel 5
- - 5: Return channel 5 minus channel 4
- - 6: Return channel 6 minus channel 7
- - 7: Return channel 7 minus channel 6
- """
- assert 0 <= differential <= 7, 'Differential number must be a value of 0-7!'
- # Build a difference channel read command.
- command = 0b10 << 6 # Start bit, differential read
- command |= (differential & 0x07) << 3 # Channel number (in 3 bits)
- # Note the bottom 3 bits of command are 0, this is to account for the
- # extra clock to do the conversion, and the low null bit returned at
- # the start of the response.
- resp = self._spi.transfer([command, 0x0, 0x0])
- # Parse out the 10 bits of response data and return it.
- result = (resp[0] & 0x01) << 9
- result |= (resp[1] & 0xFF) << 1
- result |= (resp[2] & 0x80) >> 7
- return result & 0x3FF