I've adaptet jean marc's script to read values out of an Easymeter Q3D.
The counter send it's data every 2s, so i added the 'try again' block to prevent wrong readings.
Florian
Code: Select all
#!/usr/bin/env python
import serial, sys
ser = serial.Serial(port='/dev/ttyAMA0', baudrate=9600, bytesize=7, parity='E', timeout=1)
reading = ser.read(300).decode("utf-8")
ser.flushInput()
# Try again if reading was unsuccessful
if reading.find('/',0) <> 0:
reading = ser.read(300).decode("utf-8")
ser.flushInput()
ser.close()
if len(sys.argv) > 2:
print ("Aborting: To many arguments"), sys.exit()
else:
if sys.argv[1] == 'A+': # Meter reading import
start = reading.find('1-0:1.8.0')
s_id = 1
elif sys.argv[1] == 'A-': # Meter reading export
start = reading.find('1-0:2.8.0')
s_id = 2
elif sys.argv[1] == 'L1': # Power L1
start = reading.find('1-0:21.7.255')
s_id = 3
elif sys.argv[1] == 'L2': # Power L2
start = reading.find('1-0:41.7.255')
s_id = 4
elif sys.argv[1] == 'L3': # Power L3
start = reading.find('1-0:61.7.255')
s_id = 5
elif sys.argv[1] == 'In': # Power total in
start = reading.find('1-0:1.7.255')
s_id = 1
elif sys.argv[1] == 'Out': # Power total out
start = reading.find('1-0:1.7.255')
s_id = 2
else:
print ("Aborting:", sys.argv[1] ,"is not a valid argument"),sys.exit()
idx_StartValue = reading.find('(', start) # Start index of value string
idx_Seperator = reading.find('*', idx_StartValue) # Index of seperator character
idx_EndUnit = reading.find(')', idx_Seperator) # End index of unit string
s_value = reading[idx_StartValue+1:idx_Seperator] # Value as string
s_unit = reading[idx_Seperator+1:idx_EndUnit] # Unit as string
s_prefix = reading[idx_Seperator+1:idx_Seperator+2] # Assume 1st character as prefix
if s_prefix == 'k': # Allocate value and prefix
r_value = float(s_value)*1000
s_unit = s_unit[1:]
else:
r_value = float(s_value)
# Adapt acutal values
if sys.argv[1] == 'In' and r_value <= 0 : # Set value to 0 if negative
r_value = 0
elif sys.argv[1] == 'Out' : # Invert value if negative, set to 0 if positive
if r_value <= 0:
r_value = r_value * -1
else:
r_value = 0
result = str(s_id) + '(' + str(r_value) + '*' + s_unit + ')' # create P1 string
print result.encode('utf-8')
quit()
#/ESY5Q3DA2024 V3.03
#
#1-0:0.0.0*255(184293)
#1-0:1.8.0*255(00004209.8821908*kWh)
#1-0:2.8.0*255(00007505.1469667*kWh)
#1-0:21.7.255*255(000107.34*W)
#1-0:41.7.255*255(000192.22*W)
#1-0:61.7.255*255(000226.02*W)
#1-0:1.7.255*255(000525.58*W)
#1-0:96.5.5*255(82)
#0-0:96.1.255*255(1ESY1213007893)
#!
