From ceec171c42bd79f1762b971569e20ead656f4fd0 Mon Sep 17 00:00:00 2001 From: Cody Hiar Date: Sun, 27 May 2018 15:29:21 -0600 Subject: Moving libs into separate own directory --- .../Adafruit_MCP3008/MCP3008.py | 92 ---------------------- 1 file changed, 92 deletions(-) delete mode 100644 Adafruit_Python_MCP3008/Adafruit_MCP3008/MCP3008.py (limited to 'Adafruit_Python_MCP3008/Adafruit_MCP3008/MCP3008.py') 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 -- cgit v1.2.3