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UPD: TCS34725 implementation #40

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Merged
AlexanderKaschta merged 1 commit into from
May 2, 2023
Merged

UPD: TCS34725 implementation #40

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2 changes: 1 addition & 1 deletion config/TCS34725Config.yaml
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@@ -1,4 +1,4 @@
# example configuration for couning rate on GPIO pins
# example configuration for counting rate on GPIO pins

DAQModule: TCS34725Config

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86 changes: 30 additions & 56 deletions phypidaq/TCS34725Config.py
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Expand Up @@ -2,10 +2,9 @@
from __future__ import print_function, division, unicode_literals
from __future__ import absolute_import

import sys

# import relevant pieces for TCS34725 RGB (color) sensor
import Adafruit_TCS34725 as TCS34725
import board
import adafruit_tcs34725


class TCS34725Config(object):
Expand All @@ -22,92 +21,67 @@ def __init__(self, confdict=None):
self.NChannels = 3

if 'Gain' in confdict:
gains = (TCS34725.TCS34725_GAIN_1X,
TCS34725.TCS34725_GAIN_4X,
TCS34725.TCS34725_GAIN_16X,
TCS34725.TCS34725_GAIN_60X)
self.gain = gains(confdict['Gain'])
gains = (1, 4, 16, 60)
if isinstance(confdict["Gain"], int):
self.gain = gains(confdict['Gain'])
else:
self.gain = 4
else:
self.gain = TCS34725.TCS34725_GAIN_60X
self.gain = 4
# Possible gain values:
# - TCS34725_GAIN_1X
# - TCS34725_GAIN_4X (default)
# - TCS34725_GAIN_16X
# - TCS34725_GAIN_60X

if 'IntegrationTime' in confdict:
IntTs = (TCS34725.TCS34725_INTEGRATIONTIME_2_4MS,
TCS34725.TCS34725_INTEGRATIONTIME_24MS,
TCS34725.TCS34725_INTEGRATIONTIME_50MS,
TCS34725.TCS34725_INTEGRATIONTIME_101MS,
TCS34725.TCS34725_INTEGRATIONTIME_154MS,
TCS34725.TCS34725_INTEGRATIONTIME_700MS)
maxVals = (1024, 10240, 20480, 43008, 65535, 65535)
self.IntT = IntTs(confdict['IntegrationTime'])
self.maxCount = maxVals(confdict['IntegrationTime'])
Int_Times = (2.4, 24, 50, 101, 154, 700)
self.IntTime = Int_Times(confdict['IntegrationTime'])
else:
self.IntT = TCS34725.TCS34725_INTEGRATIONTIME_2_4MS
self.maxCount = 1024. # 10 bit
# Possible integration time values:
# - TCS34725_INTEGRATIONTIME_2_4MS = 2.4ms - 1 cycle - Max Count: 1024 (default)
# - TCS34725_INTEGRATIONTIME_24MS = 24ms - 10 cycles - Max Count: 10240
# - TCS34725_INTEGRATIONTIME_50MS = 50ms - 20 cycles - Max Count: 20480
# - TCS34725_INTEGRATIONTIME_101MS = 101ms - 42 cycles - Max Count: 43008
# - TCS34725_INTEGRATIONTIME_154MS = 154ms - 64 cycles - Max Count: 65535
# - TCS34725_INTEGRATIONTIME_700MS = 700ms - 256 cycles - Max Count: 65535
self.IntT = 2.4

if 'I2CADDR' in confdict:
self.I2CAddr = confdict['I2CADDR']
print("TCS34725: I2C address set to %x " % (self.I2CAddr))
print("TCS34725: I2C address set to %x " % self.I2CAddr)
else:
self.I2CAddr = 0x29 # use default

if 'busnum' in confdict:
self.busnum = confdict['busnum']
print("TCS34725: bus number set to %x " % (self.busnum))
print("TCS34725: bus number set to %x " % self.busnum)
else:
self.busnum = 1 # use default

# provide configuration parameters
self.ChanNams = ['R', 'G', 'B', 'c']
self.ChanLims = [[0., 1.]] * self.NChannels
self.sensor = None

def init(self):
# Hardware configuration:
try:
# Create a TCS34725 instance
self.tcs = TCS34725.TCS34725(address=self.I2CAddr, busnum=self.busnum,
integration_time=self.IntT, gain=self.gain)
except Exception as e:
print("TCS34725Config: Error initialising device - exit")
print(str(e))
sys.exit(1)

# Disable interrupts (can enable them by passing true, see the set_interrupt_limits function too).
self.tcs.set_interrupt(False)

# Create sensor object, communicating over the board's default I2C bus
i2c = board.I2C() # uses board.SCL and board.SDA
self.sensor = adafruit_tcs34725.TCS34725(i2c, address=self.I2CAddr)

# Change sensor integration time to values between 2.4 and 614.4 milliseconds
self.sensor.integration_time = self.IntTime

# Change sensor gain to 1, 4, 16, or 60
self.sensor.gain = self.gain

def acquireData(self, buf):

# Read the R, G, B, C color data.
r, g, b, c = self.tcs.get_raw_data()
if self.NChannels == 1:
buf[0] = c / self.maxCount
buf[0] = self.sensor.lux
else:
buf[0] = r / self.maxCount
buf[1] = g / self.maxCount
buf[2] = b / self.maxCount
colors = self.sensor.color_rgb_bytes
buf[0] = colors[0]
buf[1] = colors[1]
buf[2] = colors[2]
if self.NChannels > 3:
buf[3] = c / self.maxCount

# there are some additional functions in Adafruit driver:
# calculate color temperature
# color_temp = Adafruit_TCS34725.calculate_color_temperature(r, g, b)
# calculate lux with another utility function.
# lux = Adafruit_TCS34725.calculate_lux(r, g, b)

# Enable interrupts and put the chip back to low power sleep/disabled.
# self.tcs.set_interrupt(True)
# self.tcs.disable()
buf[3] = self.sensor.lux

def closeDevice(self):
# nothing to do here
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1 change: 1 addition & 0 deletions requirements.txt
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Expand Up @@ -13,6 +13,7 @@ adafruit-circuitpython-max31865==2.2.12
adafruit-circuitpython-ads1x15==2.2.21
adafruit-circuitpython-adxl34x==1.12.8
adafruit-circuitpython-mcp4725==1.4.11
adafruit-circuitpython-tcs34725==3.3.16
Adafruit-PlatformDetect==3.15.3
Adafruit-PureIO==1.1.9
pyftdi==0.53.2
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