| 8,7 → 8,6 |
|---|
| import datetime |
| import sys |
| import os |
| import minimalmodbus |
| |
| from pymlab import config |
| from mlabutils import ejson |
| 38,7 → 37,7 |
|---|
| sys.exit(2) |
| |
| #### Sensor Configuration ########################################### |
| # I2C |
| |
| cfg = config.Config( |
| i2c = { |
| "port": port, |
| 49,26 → 48,19 |
|---|
| "type": "vcai2c01", |
| "address": 0x68, |
| }, |
| { |
| "name": "current_sensor2", |
| "type": "vcai2c01", |
| "address": 0x6a, |
| }, |
| ], |
| ) |
| 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") |
| sys.stdout.write("Current loop sensor example \r\n") |
| sys.stdout.write("Time, channel #1, channel #2, channel #3 , channel #4, channel #5 \r\n") |
| sensor1 = cfg.get_device("current_sensor1") |
| sensor2 = cfg.get_device("current_sensor2") |
| #time.sleep(0.5) |
| |
| #### Data Logging ################################################### |
| 81,41 → 73,32 |
|---|
| now = time.time() |
| |
| if (now - before >= interval - 2.5): # 0.5*5 channels= 2.5s |
| with open(filename, "a") as f: |
| |
| ##Measuremment settings |
| with open(filename, "a") as f: |
| |
| 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(); |
| |
| sensor1.setADC(channel = 2, gain = 1, sample_rate = 3.75); |
| time.sleep(0.5) |
| channel2 = sensor1.readCurrent(); |
| |
| sensor1.setADC(channel = 3, gain = 1, sample_rate = 3.75); |
| time.sleep(0.5) |
| channel3 = sensor1.readCurrent(); |
| |
| sensor1.setADC(channel = 4, gain = 1, sample_rate = 3.75); |
| time.sleep(0.5) |
| channel4 = sensor1.readCurrent(); |
| |
| sensor2.setADC(channel = 1, gain = 1, sample_rate = 3.75); |
| time.sleep(0.5) |
| channel5 = sensor2.readCurrent(); |
| |
| |
| ## Read data from conductivity sensor ## |
| instrument.address = 0x1E # this is the slave address number (1E-conductivity) |
| sys.stdout.write("%s \t %0.3f \t %0.3f \t %0.3f \t %0.3f \t %0.3f \n" % (datetime.datetime.now().isoformat(), channel1, channel2, channel3, channel4, channel5)) |
| |
| 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.write("%d;%0.3f;%0.3f;%0.3f;%0.3f;%0.3f\n" % (time.time(), channel1, channel2, channel3, channel4, channel5)) |
| f.flush() |
| |
| sys.stdout.flush() |