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baeic.py
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baeic.py
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#!/usr/bin/env python
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# coding: utf-8
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################################################################################
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# A) Import the librairies needed to execute the script
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################################################################################
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#Time librairy in order to sleep when need
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from time import sleep
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#Picamera library to take images
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from picamera import PiCamera
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#Enable calculation of remaining duration and datetime
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from datetime import datetime, timedelta
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#Enable creation of new folders
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import os
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################################################################################
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# B) Define the used pinout
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################################################################################
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#Affiliate pin to var for the LEDs
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GREEN = LED(16)
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RED = LED(12)
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BLUE = LED(26)
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#Affiliate pin to var for the RELAY
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RELAY = LED(14)
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bus= SMBus(1)
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################################################################################
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# C) Configuration file
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################################################################################
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camera = PiCamera()
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camera.resolution = (3280, 2464)
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camera.iso = 60
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nb_frame=300
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duration_loading=120 #(sec)
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duration_flushing=20 #(sec)
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duration_aeration=30 #(sec)
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################################################################################
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# D) Define simple sequence for I2C modules (Valves and pump)
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################################################################################
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def pump(state, verbose=True):
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sleep(0.2)
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if state is 'forward':
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# Stop pumping
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bus.write_byte(0x30, 1)
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sleep(1)
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feedback=bus.read_byte(0x30)
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if feedback == 1:
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if verbose is True:
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print("Pumping : Forward")
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if state is 'backward':
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# Stop pumping
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bus.write_byte(0x30, 2)
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sleep(1)
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feedback=bus.read_byte(0x30)
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if feedback == 2:
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if verbose is True:
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print("Pumping : Backward")
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if state is 'stop':
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# Stop pumping
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bus.write_byte(0x30, 0)
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sleep(1)
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feedback=bus.read_byte(0x30)
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if feedback == 0:
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if verbose is True:
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print("Pumping : Stop")
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if state is 'slow':
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# Start pumping
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bus.write_byte(0x30, 3)
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sleep(1)
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feedback=bus.read_byte(0x30)
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if feedback == 3:
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if verbose is True:
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print("Pumping : Slow")
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if state is 'medium':
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# Start pumping
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bus.write_byte(0x30, 5)
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sleep(1)
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feedback=bus.read_byte(0x30)
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if feedback == 5:
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if verbose is True:
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print("Pumping : Medium")
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if state is 'fast':
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# Start pumping
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bus.write_byte(0x30, 9)
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sleep(1)
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feedback=bus.read_byte(0x30)
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if feedback == 9:
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if verbose is True:
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print("Pumping : Fast")
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################################################################################
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# E) Define simple functions making the whole sequence
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################################################################################
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#First function to run in order to turn on the blue LED as well as the relay to make the I2C operationnal
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def start():
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print("###############")
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print("STARTING")
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print("###############")
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#Inform on the statut of the operation
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print("Starting : engaged")
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#turn the blue LED ON (even if it's written off here)
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BLUE.on()
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print("Led : Blue on")
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#turn the circuit ON (even if it's written off here)
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RELAY.off()
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print("Relay : Activated")
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for i in range(3):
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GREEN.on()
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print("Led : Green on")
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RED.on()
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print("Led : Red on")
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sleep(0.2)
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GREEN.off()
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print("Led : Green off")
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RED.off()
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print("Led : Red off")
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sleep(0.2)
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directory="/home/pi/Desktop/PlanktonScope_acquisition/"
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#create a directory if the directory doesn't exist yet
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if not os.path.exists(directory):
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os.makedirs(directory)
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GREEN.on()
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#Inform on the statut of the operation
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print("Starting : done")
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################################################################################
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#The load will simply load a sample by pumping fast during a long period
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def load():
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print("###############")
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print("LOADING")
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print("###############")
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#Inform on the statut of the operation
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print("Loading : engaged")
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pump('fast', True)
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#wait to complete the loading process and print info on the terminal
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for i in range(duration_loading):
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print("Loading : "+str(i)+"/"+str(duration_loading))
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sleep(1)
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#Inform on the statut of the operation
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print("Loading : done")
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################################################################################
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#image is very a basci way to take images
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def image():
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print("###############")
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print("IMAGING")
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print("###############")
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#Inform on the statut of the operation
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print("Imaging : engaged")
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#start the preview only during the acquisition
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camera.start_preview(fullscreen=False, window = (160, 0, 640, 480))
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#allow the camera to warm up
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sleep(2)
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for frame in range(nb_frame):
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#turn the green LED ON (even if it's written off here)
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GREEN.on()
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sleep(0.5)
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#get the actual date
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date_now = datetime.now().strftime("%m_%d_%Y")
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day_now="/home/pi/Desktop/PlanktonScope_acquisition/"+str(date_now)
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#create a directory if the directory doesn't exist yet
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if not os.path.exists(day_now):
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os.makedirs(day_now)
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#get the actual date
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hour_now = datetime.now().strftime("%H")
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hour="/home/pi/Desktop/PlanktonScope_acquisition/"+str(date_now)+"/"+str(hour_now)
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#create a directory if the directory doesn't exist yet
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if not os.path.exists(hour):
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os.makedirs(hour)
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#get the time now
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time = datetime.now().strftime("%M_%S_%f")
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#create a filename from the date and the time
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filename="/home/pi/Desktop/PlanktonScope_acquisition/"+str(date_now)+"/"+str(hour_now)+"/"+str(time)+".jpg"
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#capture an image with the specified filename
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camera.capture(filename)
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#wait to complete the imaging process and print info on the terminal
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print("Imaging : "+str(frame)+"/"+str(nb_frame))
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#turn the green LED OFF (even if it's written on here)
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GREEN.off()
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sleep(0.5)
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#stop the preview during the rest of the sequence
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camera.stop_preview()
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GREEN.on()
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pump('stop', True)
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#Inform on the statut of the operation
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print("Imaging : done")
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################################################################################
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# F) Execute the sequence
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################################################################################
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start()
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while True:
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init()
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load()
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flush()
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image()
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aeration()
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wait()
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stop()
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