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Library to get a lot of useful data out of Senec appliances.
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| #!/usr/bin/env python3 | |
| # -*- coding: utf-8 -*- | |
| """ | |
| Library to get a lot of useful data out of Senec appliances. | |
| Tested with: SENEC.Home V3 hybrid duo | |
| Kudos: | |
| * SYSTEM_STATE_NAME taken from https://github.com/mchwalisz/pysenec | |
| """ | |
| import requests | |
| import struct | |
| import logging | |
| import json | |
| import urllib3 | |
| urllib3.disable_warnings(urllib3.exceptions.InsecureRequestWarning) | |
| __author__ = "Nicolas Inden" | |
| __copyright__ = "Copyright 2023, Nicolas Inden" | |
| __credits__ = ["Nicolas Inden", "Mikołaj Chwalisz"] | |
| __license__ = "Apache-2.0 License" | |
| __version__ = "1.0.4" | |
| __maintainer__ = "Nicolas Inden" | |
| __email__ = "nico@smashnet.de" | |
| __status__ = "Production" | |
| logging.basicConfig(format='%(asctime)s %(levelname)s:%(message)s',level=logging.INFO) | |
| log = logging.getLogger("Senec") | |
| class Senec(): | |
| def __init__(self, device_ip): | |
| self.device_ip = device_ip | |
| self.read_api = f"https://{device_ip}/lala.cgi" | |
| def get_values(self, request_json = {}): | |
| if not request_json: request_json = BASIC_REQUEST | |
| try: | |
| response = requests.post(self.read_api, json=request_json, verify=False) | |
| if response.status_code == 200: | |
| return self.__decode_data(response.json()) | |
| #return self.__substitute_system_state(res) | |
| else: | |
| log.warning(f"Status code {response.status_code}") | |
| return {"error": f"Status code {response.status_code}"} | |
| except requests.Timeout: | |
| errmsg = f"{self.device_ip}: Timeout while accessing Senec box." | |
| log.warning(errmsg) | |
| return {"error": errmsg} | |
| except requests.ConnectionError: | |
| errmsg = f"{self.device_ip}: Connection error while accessing Senec box." | |
| log.warning(errmsg) | |
| return {"error": errmsg} | |
| except requests.exceptions.JSONDecodeError as e: | |
| errmsg = f"{self.device_ip}: Could not decode JSON response: {e}" | |
| log.warning(errmsg) | |
| return {"error": errmsg} | |
| except Exception as e: | |
| errmsg = f"{self.device_ip}: Other exception: {e}" | |
| log.warning(errmsg) | |
| return {"error": errmsg} | |
| def get_all_values(self): | |
| request_json = {"STATISTIC": {},"ENERGY": {},"FEATURES": {},"LOG": {},"SYS_UPDATE": {},"WIZARD": {},"BMS": {},"BAT1": {},"BAT1OBJ1": {},"BAT1OBJ2": {},"BAT1OBJ3": {},"BAT1OBJ4": {},"PWR_UNIT": {},"PV1": {},"FACTORY": {},"GRIDCONFIG": {}} | |
| return self.get_values(request_json) | |
| def __decode_data(self, data): | |
| return { k: self.__decode_data_helper(v) for k, v in data.items() } | |
| def __decode_data_helper(self, data): | |
| if isinstance(data, str): | |
| return self.__decode_value(data) | |
| if isinstance(data, list): | |
| return [self.__decode_value(val) for val in data] | |
| if isinstance(data, dict): | |
| return { k: self.__decode_data_helper(v) for k, v in data.items() } | |
| def __decode_value(self, value): | |
| if value.startswith("fl_"): | |
| return struct.unpack('!f', bytes.fromhex(value[3:]))[0] | |
| if value.startswith("u8_"): | |
| return struct.unpack('!B', bytes.fromhex(value[3:]))[0] | |
| if value.startswith("i3_") or value.startswith("i8_") or value.startswith("u3_") or value.startswith("u1_"): | |
| return int(value[3:], 16) | |
| if value.startswith("st_"): | |
| return value[3:] | |
| return value | |
| def __substitute_system_state(self, data): | |
| #currently unused | |
| system_state = data['STATISTIC']['CURRENT_STATE'] | |
| if system_state == "VARIABLE_NOT_FOUND": | |
| return data | |
| try: | |
| data['STATISTIC']['CURRENT_STATE'] = SYSTEM_STATE_NAME[system_state] | |
| except KeyError as e: | |
| log.error(f"Failed substituting system state: {e}") | |
| data['STATISTIC']['CURRENT_STATE'] = f"unknown ({system_state})" | |
| finally: | |
| return data | |
| BASIC_REQUEST = { | |
| #'STATISTIC': { | |
| # 'CURRENT_STATE': '', # Current state of the system (int, see SYSTEM_STATE_NAME) | |
| # 'LIVE_BAT_CHARGE_MASTER': '', # Battery charge amount since installation (kWh) | |
| # 'LIVE_BAT_DISCHARGE_MASTER': '', # Battery discharge amount since installation (kWh) | |
| # 'LIVE_GRID_EXPORT': '', # Grid export amount since installation (kWh) | |
| # 'LIVE_GRID_IMPORT': '', # Grid import amount since installation (kWh) | |
| # 'LIVE_HOUSE_CONS': '', # House consumption since installation (kWh) | |
| # 'LIVE_PV_GEN': '', # PV generated power since installation (kWh) | |
| # 'MEASURE_TIME': '' # Unix timestamp for above values (ms) | |
| #}, | |
| 'ENERGY': { | |
| 'GUI_BAT_DATA_CURRENT': '', # Battery charge current: negative if discharging, positiv if charging (A) | |
| 'GUI_BAT_DATA_FUEL_CHARGE': '', # Remaining battery (percent) | |
| 'GUI_BAT_DATA_POWER': '', # Battery charge power: negative if discharging, positiv if charging (W) | |
| 'GUI_BAT_DATA_VOLTAGE': '', # Battery voltage (V) | |
| 'GUI_GRID_POW': '', # Grid power: negative if exporting, positiv if importing (W) | |
| 'GUI_HOUSE_POW': '', # House power consumption (W) | |
| 'GUI_INVERTER_POWER': '', # PV production (W) | |
| 'STAT_HOURS_OF_OPERATION': '' # Appliance hours of operation | |
| }, | |
| 'BMS': { | |
| 'CHARGED_ENERGY': '', # List: Charged energy per battery | |
| 'DISCHARGED_ENERGY': '', # List: Discharged energy per battery | |
| 'CYCLES': '' # List: Cycles per battery | |
| }, | |
| 'PV1': { | |
| 'MPP_CUR': '', # List: MPP current (A) | |
| 'MPP_POWER': '', # List: MPP power (W) | |
| 'MPP_VOL': '', # List: MPP voltage (V) | |
| 'POWER_RATIO': '', # Grid export limit (percent) | |
| 'P_TOTAL': '' # ? | |
| }, | |
| 'FACTORY': { | |
| 'DESIGN_CAPACITY': '', # Battery design capacity (Wh) | |
| 'MAX_CHARGE_POWER_DC': '', # Battery max charging power (W) | |
| 'MAX_DISCHARGE_POWER_DC': '' # Battery max discharging power (W) | |
| } | |
| } | |
| SYSTEM_STATE_NAME = { | |
| 0: "INITIAL STATE", | |
| 1: "ERROR INVERTER COMMUNICATION", | |
| 2: "ERROR ELECTRICY METER", | |
| 3: "RIPPLE CONTROL RECEIVER", | |
| 4: "INITIAL CHARGE", | |
| 5: "MAINTENANCE CHARGE", | |
| 6: "MAINTENANCE READY", | |
| 7: "MAINTENANCE REQUIRED", | |
| 8: "MAN. SAFETY CHARGE", | |
| 9: "SAFETY CHARGE READY", | |
| 10: "FULL CHARGE", | |
| 11: "EQUALIZATION: CHARGE", | |
| 12: "DESULFATATION: CHARGE", | |
| 13: "BATTERY FULL", | |
| 14: "CHARGE", | |
| 15: "BATTERY EMPTY", | |
| 16: "DISCHARGE", | |
| 17: "PV + DISCHARGE", | |
| 18: "GRID + DISCHARGE", | |
| 19: "PASSIVE", | |
| 20: "OFF", | |
| 21: "OWN CONSUMPTION", | |
| 22: "RESTART", | |
| 23: "MAN. EQUALIZATION: CHARGE", | |
| 24: "MAN. DESULFATATION: CHARGE", | |
| 25: "SAFETY CHARGE", | |
| 26: "BATTERY PROTECTION MODE", | |
| 27: "EG ERROR", | |
| 28: "EG CHARGE", | |
| 29: "EG DISCHARGE", | |
| 30: "EG PASSIVE", | |
| 31: "EG PROHIBIT CHARGE", | |
| 32: "EG PROHIBIT DISCHARGE", | |
| 33: "EMERGANCY CHARGE", | |
| 34: "SOFTWARE UPDATE", | |
| 35: "NSP ERROR", | |
| 36: "NSP ERROR: GRID", | |
| 37: "NSP ERROR: HARDWRE", | |
| 38: "NO SERVER CONNECTION", | |
| 39: "BMS ERROR", | |
| 40: "MAINTENANCE: FILTER", | |
| 41: "SLEEPING MODE", | |
| 42: "WAITING EXCESS", | |
| 43: "CAPACITY TEST: CHARGE", | |
| 44: "CAPACITY TEST: DISCHARGE", | |
| 45: "MAN. DESULFATATION: WAIT", | |
| 46: "MAN. DESULFATATION: READY", | |
| 47: "MAN. DESULFATATION: ERROR", | |
| 48: "EQUALIZATION: WAIT", | |
| 49: "EMERGANCY CHARGE: ERROR", | |
| 50: "MAN. EQUALIZATION: WAIT", | |
| 51: "MAN. EQUALIZATION: ERROR", | |
| 52: "MAN: EQUALIZATION: READY", | |
| 53: "AUTO. DESULFATATION: WAIT", | |
| 54: "ABSORPTION PHASE", | |
| 55: "DC-SWITCH OFF", | |
| 56: "PEAK-SHAVING: WAIT", | |
| 57: "ERROR BATTERY INVERTER", | |
| 58: "NPU-ERROR", | |
| 59: "BMS OFFLINE", | |
| 60: "MAINTENANCE CHARGE ERROR", | |
| 61: "MAN. SAFETY CHARGE ERROR", | |
| 62: "SAFETY CHARGE ERROR", | |
| 63: "NO CONNECTION TO MASTER", | |
| 64: "LITHIUM SAFE MODE ACTIVE", | |
| 65: "LITHIUM SAFE MODE DONE", | |
| 66: "BATTERY VOLTAGE ERROR", | |
| 67: "BMS DC SWITCHED OFF", | |
| 68: "GRID INITIALIZATION", | |
| 69: "GRID STABILIZATION", | |
| 70: "REMOTE SHUTDOWN", | |
| 71: "OFFPEAK-CHARGE", | |
| 72: "ERROR HALFBRIDGE", | |
| 73: "BMS: ERROR OPERATING TEMPERATURE", | |
| 74: "FACOTRY SETTINGS NOT FOUND", | |
| 75: "BACKUP POWER MODE - ACTIVE", | |
| 76: "BACKUP POWER MODE - BATTERY EMPTY", | |
| 77: "BACKUP POWER MODE ERROR", | |
| 78: "INITIALISING", | |
| 79: "INSTALLATION MODE", | |
| 80: "GRID OFFLINE", | |
| 81: "BMS UPDATE NEEDED", | |
| 82: "BMS CONFIGURATION NEEDED", | |
| 83: "INSULATION TEST", | |
| 84: "SELFTEST", | |
| 85: "EXTERNAL CONTROL", | |
| 86: "ERROR: TEMPERATURESENSOR", | |
| 87: "GRID OPERATOR: CHARGE PROHIBITED", | |
| 88: "GRID OPERATOR: DISCHARGE PROHIBITED", | |
| 89: "SPARE CAPACITY", | |
| 90: "SELFTEST ERROR", | |
| 91: "EARTH FAULT", | |
| 92: "PV-MODE", | |
| 93: "REMOTE DISCONNECTION", | |
| 94: "ERROR DRM0", | |
| 95: "BATTERY DIAGNOSIS" | |
| } | |
| if __name__ == "__main__": | |
| api = Senec("IP_OF_YOUR_SENEC_APPLIANCE") | |
| print(api.get_values()) |
With the latest update (REVISION MCU: 3825; REVISION MCU-BL: 2307; REVISION NPU-REGS: 10; REVISION NPU-IMAGE: 2307; REVISION GUI: 2966) a few things seem to have happened:
- the access to http was switched off, only https works --> line 33 should be changed to:
self.read_api = f"https://{device_ip}/lala.cgi" - the ssl certificate is not verifiable --> I hope SENEC fixes this. for now as a work around line 38 can be changed to:
response = requests.post(self.read_api, json=request_json, verify=False) - I noticed that all "'STATISTIC': " Objects are no longer available
Hi, it appears that some other projects that read SENEC's data has managed to find a workaround for the changes in SENEC's firmware that now mandates https.
Example here: https://github.com/evcc-io/evcc/blob/8351a4471f74d8811e4bdb02e75c5a7b6d0ff8bb/templates/definition/meter/senec-home.yaml#L2
Would be wonderful if this amazing library can be updated to incorporate this fix too.
Thx @phorbi and @changyang1230
Did a little patch release to make this work again. Now uses HTTPS to connect to Senec appliance and ignores STATISTICS values.
Thank you so so much!
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Used your code for smart charger integration script. Thanks for the useful library! (New to Python, literally just coded everything with the help of ChatGPT over the last day :P)