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/Designs/Measuring_instruments/ISMS01A/SW/ISMS_read.py
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/Designs/Measuring_instruments/ISMS01A/SW/ISMS_readOld.py
0,0 → 1,134
#!/usr/bin/python
 
#uncomment for debbug purposes
#import logging
#logging.basicConfig(level=logging.DEBUG)
 
import time
import datetime
import sys
import os
import minimalmodbus
 
from pymlab import config
from mlabutils import ejson
 
parser = ejson.Parser()
 
#### Script Arguments ###############################################
 
if len(sys.argv) != 3:
sys.stderr.write("Invalid number of arguments.\n")
sys.stderr.write("Usage: %s PORT_ADDRESS CONFIG_FILE\n" % (sys.argv[0], ))
sys.exit(1)
 
 
port = eval(sys.argv[1])
 
value = parser.parse_file(sys.argv[2])
path = value['data_path']
interval = value['raw_sample_interval']
stationName = value['origin']
 
 
 
if (interval<5) or (interval>3600):
sys.stderr.write("Invalid sample interval arguments.\n")
sys.stderr.write("The interval has to be in the range from 5 to 3600 seconds\n")
sys.exit(2)
 
#### Sensor Configuration ###########################################
# I2C
cfg = config.Config(
i2c = {
"port": port,
},
bus = [
{
"name": "current_sensor1",
"type": "vcai2c01",
"address": 0x68,
},
],
)
cfg.initialize()
 
# modbus
instrument = minimalmodbus.Instrument('/dev/ttyUSB0', 1) # port name, slave address (in decimal)
 
instrument.serial.port # this is the serial port name
instrument.serial.baudrate = 9600 # Baud
instrument.serial.bytesize = 8
instrument.serial.stopbits = 2
instrument.serial.timeout = 0.5 # seconds
 
instrument.mode = minimalmodbus.MODE_RTU # rtu or ascii mode
 
 
sys.stdout.write("Current loop and modbus sensor example \r\n")
sys.stdout.write("Time, water-level, temp1, conduc, salinity, tds_kcl, temp2, pH, redox \r\n")
#sys.stdout.write("Time, channel #1, channel #2, channel #3 , channel #4, channel #5 channel #6 , channel #7, channel #8 \r\n")
sensor1 = cfg.get_device("current_sensor1")
#time.sleep(0.5)
 
#### Data Logging ###################################################
 
while True:
try:
before = time.time()-interval
while True:
filename = path + time.strftime("%Y%m%d%H", time.gmtime()) +"0000_"+ stationName + "_data.csv"
now = time.time()
if (now - before >= interval - 2.5): # 0.5*5 channels= 2.5s
with open(filename, "a") as f:
##Measuremment settings
sensor1.setADC(channel = 1, gain = 1, sample_rate = 3.75);
instrument.address = 0x1E # this is the slave address number (1E-conductivity)
instrument.write_register(0x01, 0x1F, 0) # Registernumber, value, number of decimals for storage
instrument.address = 0x14 # this is the slave address number (14 - pH)
instrument.write_register(0x01, 0x1F, 0) # Registernumber, value, number of decimals for storage
time.sleep(0.5)
 
##Reading
## Read data from analog sensors ##
channel1 = sensor1.readCurrent();
 
## Read data from conductivity sensor ##
instrument.address = 0x1E # this is the slave address number (1E-conductivity)
 
temperature1 = instrument.read_float(0x53, 3, 2) # Registernumber, number of decimals
conductivity = instrument.read_float(0x55, 3, 2) # Registernumber, number of decimals
salinity = instrument.read_float(0x57, 3, 2) # Registernumber, number of decimals
tds_kcl = instrument.read_float(0x59, 3, 2) # Registernumber, number of decimals
## Read data from pH sensor ##
instrument.address = 0x14 # this is the slave address number (14 - pH)
temperature2 = instrument.read_float(0x53, 3, 2) # Registernumber, number of decimals
pH = instrument.read_float(0x55, 3, 2) # Registernumber, number of decimals
redox = instrument.read_float(0x57, 3, 2) # Registernumber, number of decimals
 
sys.stdout.write("%s \t %0.3f \t %0.3f \t %0.3f \t %0.3f \t %0.3f \t %0.3f \t %0.3f \t %0.3f \t \n" % (datetime.datetime.now().isoformat(), channel1, temperature1, conductivity, salinity, tds_kcl, temperature2, pH, redox))
 
f.write("%d;%0.3f;%0.3f;%0.3f;%0.3f;%0.3f;%0.3f;%0.3f;%0.3f\n" % (time.time(), channel1, temperature1, conductivity, salinity, tds_kcl, temperature2, pH, redox))
f.flush()
 
sys.stdout.flush()
before = time.time()
else:
time.sleep(0.1)
 
except KeyboardInterrupt:
f.close()
sys.exit(0)
except Exception as e:
sys.stdout.write(e)
time.sleep(5)
 
 
Property changes:
Added: svn:executable
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