heater/si_lib.py at master · GregoryOrciuch/heater · GitHub

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import time
import struct
from binascii import unhexlify


#104
MOSFET_Discharge_St=["OFF","ON","cell overdischarge","overcurrent","4","pack overdischarge",
                     "bat overtemp","MOSFET overtemp","Abnormal current","battery is not detected",
                     "PCB overtemp","charge MOSFET turn on","shortcircuit","Discharge MOSFET abnormality",
                     "Start exception","Manual off"]
#103
MOSFET_Charge_St=["OFF","ON","overcharge","overcurrent","batt full","pack overvoltage",
                  "bat overtemp","MOSFET overtemp","abnormal current","bat not detected",
                  "PCB overtemp","11-undefined","12-undefined","Discharge MOSFET abnormality","14","Manual off"]
#134-135
Bal_St=["OFF","limit trigger exceeds","charging v diff too high","overtemp","ACTIVE",
        "5-udef","6-udef","7-udef","8-udef","9-udef","PCB Overtemp"]


def post_to_influx(Grid,PV,charger,si_power,si_volt,si_volt_ac):
    Batt_Charge=0
    Batt_Discharge=0
    if charger < 0 and si_power < 0:
        Batt_Charge=str(-si_power)
        Batt_Discharge=str(0)
    elif charger > 0:
        Batt_Charge=str(0)
        Batt_Discharge=str(si_power)
    else:
        Batt_Charge=str(0)
        Batt_Discharge=str(0)
    print('vis.0.Grid,from=Raspi3B value=' + str(Grid))
    print('vis.0.PV,from=Raspi3B value=' + str(PV))
    print('vis.0.Batt_Charge,from=Raspi3B value=' + Batt_Charge)
    print('vis.0.Batt_Discharge,from=Raspi3B value=' + Batt_Discharge)
    print('vis.0.SI_Volt,from=Raspi3B value=' + str(si_volt))
    print('vis.0.SI_Volt_AC,from=Raspi3B value=' + str(si_volt_ac))
    return ()

def readbms(ser_blue):
    test='DBDB00000000'
    SoC=0
    try:
        ser_blue.write (test.decode('hex'))
    except:
        ser_blue.close()
    time.sleep(1)
    if(ser_blue.isOpen() == False):
        ser_blue.open()
    Antw33 = ser_blue.read(140)
    print(Antw33)
    # if True:
    try:
        SoC = int((Antw33.encode('hex') [(74*2):(75*2)]),16)
        data = (Antw33.encode('hex') [(111*2):(114*2+2)])
        if int(data,16)>2147483648:
            BMS_pow=str((-(2*2147483648)+int(data,16)))
        else:
            BMS_pow=str(int(data,16))
        data = (Antw33.encode('hex') [(70*2):(73*2+2)])
        if int(data,16)>2147483648:
            BMS_Current = str((-(2*2147483648)+int(data,16))*0.1)
        else:
            BMS_Current = str(int(data,16)*0.1)
        data = (Antw33.encode('hex') [8:12])
        BMS_V = str((struct.unpack('>H',unhexlify(data))[0])*0.1)

        #MOSFET Status
        data = (Antw33.encode('hex') [103*2:103*2+2])
        FET_CH_ST = str(int(data,16))
        data = (Antw33.encode('hex') [104*2:104*2+2])
        FET_DC_ST = str(int(data,16))
        #BALANCING STATUS
        data = (Antw33.encode('hex') [105*2:105*2+2])
        BMS_Bal_St = str(int(data,16))

        data = (Antw33.encode('hex') [(121*2):(122*2+2)])
        cell_avg=str((struct.unpack('>H',unhexlify(data))[0])*0.001)
        data = (Antw33.encode('hex') [(119*2):(120*2+2)])
        cell_min=str((struct.unpack('>H',unhexlify(data))[0])*0.001)
        data = (Antw33.encode('hex') [(116*2):(117*2+2)])
        cell_max=str((struct.unpack('>H',unhexlify(data))[0])*0.001)
        for i in range(1,17):
            data = (Antw33.encode('hex') [((4+2*i)*2):((5+2*i)*2+2)])
            resp = str((struct.unpack('>H',unhexlify(data))[0])*0.001)
            data_string = 'vis.0.cell'+str(i)+',from=Raspi3B value=' + resp
            print(data_string)
        #All to influx
        data_string = 'vis.0.SoC,from=Raspi3B value=' + str(SoC)
        print(data_string)
        data_string = 'vis.0.BMS_pow,from=Raspi3B value=' + BMS_pow
        print(data_string)
        data_string = 'vis.0.BMS_Current,from=Raspi3B value=' + BMS_Current
        print(data_string)
        data_string = 'vis.0.BMS_V,from=Raspi3B value=' + BMS_V
        print(data_string)
        data_string = 'vis.0.cell_V_avg,from=Raspi3B value=' + cell_avg
        print(data_string)
        data_string = 'vis.0.cell_V_min,from=Raspi3B value=' + cell_min
        print(data_string)
        data_string = 'vis.0.cell_V_max,from=Raspi3B value=' + cell_max
        print(data_string)
        data_string = 'vis.0.FET_DC_ST,from=Raspi3B value=' + FET_DC_ST
        print(data_string)
        data_string = 'vis.0.FET_CH_ST,from=Raspi3B value=' + FET_CH_ST
        print(data_string)
        data_string = 'vis.0.BMS_Bal_St,from=Raspi3B value=' + BMS_Bal_St
        print(data_string)

    except:
        print('BMS_SoC to Influx failed')
    return (SoC)