#!/usr/bin/python
import os
import header
import time
header.init()
## Turn laser Relay off, and set power off (1.8V)
os.system('echo "0" |sudo tee /sys/class/gpio/gpio%s/value' %(header.laserPower))
time.sleep(1)
os.system('echo "0" |sudo tee /sys/class/gpio/gpio%s/value' %(header.laserRelay))
"""
Date Created: 2017.10.10
This script monitors the laser diode current. It can turn the laser off if diode
current hits a critical value (TBD mA)
This script should be called as a subproccess by the main function so it can run
continuously in the background
"""
import time
import SET
import PRINT
import header
header.init()
def readCurrent():
## Read the laser diode current
voltage = int(open(header.diodeC).read())
"""
TO BE WRITTEN:
Convert the ADC value of voltage to actual voltage in mV
"""
## To convert from voltage to diode current, the conversion is 10 mV = 1 mA
## Nominal operating current for 405 nm laser is 50 mA (60 mA absolute max)
current = voltage / 10
import datetime
import re
import subprocess
##import runDHM # external .py script that runs DHM
import header # declaration file to initialize super global variables
## Message list
a = 'DHM_on' # Turn on Laser (prepare for DAQ)
b = 'DHM_off' # Turn off laser
c = 'DHM_record' # Record holograms
## 'c' should be followed by integer for DAQ time
d = 'DHM_status' # Query for DHM status
e = 'DHM_newSample' # Turn on pump for new sample
f = 'DHM_auto' # Let DHM run its own cycle
z = 'SYS_off' # Non-emergency shutdown
header.init() # Define global variables from header.py
# Status variables
laserStat = 'off'
pumpStat = 'off'
def time_stamp():
ts = time.time()
st = datetime.datetime.fromtimestamp(ts).strftime('%H:%M:%S %Y.%m.%d')
return (st, ts)
def temp_reading():
subprocess.call(["sudo","%s/tempReading.py" % (header.GPIOfolder)])
return
(st,ts) = time_stamp()