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getInverterDeye.py
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#!/usr/bin/env python
import minimalmodbus
import time
import struct
import sys
import mysql.connector
import deye
from pathlib import Path
p = Path(__file__).with_name('db.cred')
f = open(p.absolute(), 'r')
cred = f.read().splitlines()
mydb = mysql.connector.connect(
host=cred[0],
user=cred[1],
password=cred[2],
database=cred[3]
)
mycursor = mydb.cursor()
sql_fields = []
sql_values = []
for register in deye.registers:
if ( register[deye.reg_log] == 1 ):
sql_fields.append( ' `' + register[deye.reg_db_field] + '`' )
sql_values.append( ' %s AS `' + register[deye.reg_db_field] + '`' )
#sqlInsertData = 'INSERT INTO `pv` ( `timestamp`,{fields} ) VALUES ( NOW(6),{values} )'.format(
# fields=",".join(sql_fields),
# values=",".join(sql_values)
# )
sqlInsertData = 'INSERT INTO `pv` ( `timestamp`,`unix_ts`,{fields},`em_frq`,`em_grid_P`,`em_import_E`,`em_export_E` ) SELECT NOW(6),FLOOR(UNIX_TIMESTAMP(NOW(6))*1000),{values},AVG(`frq`) AS `em_frq`,AVG(`P`) AS `em_grid_P`,AVG(`import_E`) AS `em_import_E`,AVG(`export_E`) AS `em_export_E` FROM `log`.`em_wago` WHERE `unix_ts` > %s'.format(
fields=",".join(sql_fields),
values=",".join(sql_values)
)
#print( sqlInsertData )
#sys.exit()
# get last data timestamp
mycursor.execute("SELECT FLOOR(`unix_ts`/1000) FROM `pv` ORDER BY `unix_ts` DESC LIMIT 1")
myresult = mycursor.fetchall()
for x in myresult:
lastLogTimestamp = x[0]
lastLogTimestamp = float(lastLogTimestamp)
#sys.exit()
# port name, slave address (in decimal)
inverter = minimalmodbus.Instrument('/dev/serial/by-id/usb-FTDI_FT232R_USB_UART_A10MLD05-if00-port0', 1)
inverter.serial.baudrate = 9600
inverter.serial.bytesize = 8
inverter.serial.parity = minimalmodbus.serial.PARITY_NONE
inverter.serial.stopbits = 1
inverter.mode = minimalmodbus.MODE_RTU
inverter.serial.timeout = 1
inverter.close_port_after_each_call = True
#inverter.debug = True
#print(inverter)
startTime = time.time()
# avg over samples
samples = 0
errors = 0
while True:
start = 500
d = 100
#if ( len(sys.argv) > 1 ):
# start = int(sys.argv[1])
try:
for r in deye.registers:
if ( r[deye.reg_type] == 'bit' ):
r[deye.reg_value] = 0
while start < 601:
# Start register, number, function code
data = inverter.read_registers(start, d, 3)
#print(data)
n = len(data)
for i in range(0,n):
j = i + start
if ( j in deye.ref_registers ):
r = deye.ref_registers[j]
if ( r[deye.reg_type] == 's16' ):
r[deye.reg_value] += data[i] - ((data[i] & 0x8000) << 1)
elif ( r[deye.reg_type] == 'u32' ):
r[deye.reg_value] += data[i] + (data[i+1] << 16)
elif ( r[deye.reg_type] == 'v16' ):
if ( data[i] != 42991 ):
r[deye.reg_value] += data[i]
elif ( r[deye.reg_type] == 'bit' ):
r[deye.reg_value] = data[i]
else:
r[deye.reg_value] += data[i]
# add high word onto lower
if ( r[deye.reg_log] == 2 ):
lr = deye.ref_registers[r[deye.reg_db_field]]
lr[deye.reg_value] += r[deye.reg_scale] * (r[deye.reg_value] + r[deye.reg_offset])
start += d
samples += 1
#register = 1000
#val = deye.ref_registers[register][deye.reg_value]
#print( '{register:3n} {val:6n}'.format(register=register,val=val) )
# log to db
now = time.time()
if ( now - startTime > 4.5 ):
#log null row
if ( now - lastLogTimestamp > 30 ):
val = []
val.append( round( (now + lastLogTimestamp) / 2 ) )
val.append( round( 1000 * ((now + lastLogTimestamp) / 2) ) )
mycursor.execute("INSERT INTO `pv` ( `timestamp`, `unix_ts` ) VALUES ( FROM_UNIXTIME(%s), %s )", val)
mydb.commit()
#toggle gen port 0=generator, 1=smartout, 2=microinverter
gen = inverter.read_registers(133, 1, 3)
mycursor.execute("SELECT `elevation` FROM `sun` WHERE `unix_ts` >= UNIX_TIMESTAMP(NOW())*1000 ORDER BY `unix_ts` LIMIT 1;")
myresult = mycursor.fetchall()
for x in myresult:
el = x[0]
if ( el > 0.0 ):
if ( gen[0] != 2 ):
inverter.write_register(133, 2, 0, 16, False)
else:
if ( gen[0] != 1 ):
inverter.write_register(133, 0, 0, 16, False)
"""
gen = inverter.read_registers(133, 1, 3)
if ( ( deye.ref_registers[672][deye.reg_value] / samples ) > 120 or
( deye.ref_registers[673][deye.reg_value] / samples ) > 120 or
( deye.ref_registers[667][deye.reg_value] / samples ) > 20):
if ( gen[0] != 2 ):
inverter.write_register(133, 2, 0, 16, False)
else:
if ( gen[0] != 1 ):
inverter.write_register(133, 1, 0, 16, False)
"""
#insert to db
val = []
for r in deye.registers:
if ( r[deye.reg_log] == 1 and r[deye.reg_type] != 'bit' ):
val.append( round( r[deye.reg_value] / samples ) )
elif ( r[deye.reg_log] == 1 and r[deye.reg_type] == 'bit' ):
val.append( r[deye.reg_value] )
r[deye.reg_value] = 0
val.append( ( now - 5 ) * 1000 )
mycursor.execute(sqlInsertData, val)
mydb.commit()
lastLogTimestamp = now
#get inverter datetime
date = inverter.read_registers(62, 3, 3)
year = (date[0] >> 8) + 2000
month = date[0] & 255
day = (date[1] >> 8)
hour = date[1] & 255
minute = (date[2] >> 8)
second = date[2] & 255
timeSql = 'UPDATE `pv_values` SET `inverter_timestamp` = "{year}-{month}-{day} {hour}:{minute}:{second}"'.format( year = year, month = month, day = day, hour = hour, minute = minute, second = second)
mycursor.execute(timeSql)
mydb.commit()
samples = 0
errors = 0
startTime = time.time()
except Exception as error:
#print( "[!] Exception occurred: ", error )
#cleanup
startTime = time.time()
samples = 0
for r in deye.registers:
r[deye.reg_value] = 0
errors += 1
if ( errors > 100 ):
print("getInverterDeye: exit, too many errors")
sys.exit()
time.sleep(2)
time.sleep(1)