Refractor to use feasycom_ble
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30246b9355
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161
solar_ble.py
161
solar_ble.py
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@ -5,10 +5,13 @@ import datetime
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import struct
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import sys
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import time
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from io import RawIOBase
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from bluepy import btle
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from libscrc import modbus
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from feasycom_ble import BTLEUart
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MAC = "DC:0D:30:9C:61:BA"
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INTERVAL = 15
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@ -158,72 +161,51 @@ CMD_ = b"\xff\x78\x00\x00\x00\x01"
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STATUS = {}
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def parsePacket(data):
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timestamp = datetime.datetime.utcnow().isoformat(" ")
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# prefix = data[0]
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operation = data[1]
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cc = data[2]
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res = None
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if operation == 3:
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if cc == 0x0E: # GET_BATTERY_STATE
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res = dict(
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zip(
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(
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"battery_charge",
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"battery_voltage",
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"battery_current",
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"_internal_temperature?",
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"battery_temperature",
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"load_voltage",
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"load_current",
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"load_power",
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),
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struct.unpack("!xxxHHHbbHHHxx", data),
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)
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)
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res["battery_voltage"] /= 10
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res["battery_current"] /= 100
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res["load_voltage"] /= 10
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res["load_current"] /= 100
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STATUS.update(res)
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# GET_BATTERY_STATE
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def parse_battery_state(data: bytes) -> dict:
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res = dict(
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zip(
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(
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"battery_charge",
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"battery_voltage",
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"battery_current",
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"_internal_temperature?",
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"battery_temperature",
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"load_voltage",
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"load_current",
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"load_power",
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),
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struct.unpack("!HHHbbHHH", data),
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)
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)
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res["battery_voltage"] /= 10
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res["battery_current"] /= 100
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res["load_voltage"] /= 10
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res["load_current"] /= 100
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STATUS.update(res)
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elif cc == 0x08: # GET_PANEL_STATUS (OR version)
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res = dict(
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zip(
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("panel_voltage", "panel_current", "panel_power", "load_enabled"),
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struct.unpack("!xxxHHHx?xx", data),
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)
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)
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res["panel_voltage"] /= 10
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res["panel_current"] /= 100
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STATUS.update(res)
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elif operation == 6 and cc == 1:
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res = dict(zip(("load_enabled",), struct.unpack("!xxxxx?xx", data)))
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STATUS.update(res)
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if res:
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print(timestamp, res)
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return res
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print(timestamp, data)
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sys.stdout.flush()
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log(str(res))
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return res
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class Delegate(btle.DefaultDelegate):
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data = bytearray()
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# GET_PANEL_STATUS
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def parse_panel_status(data: bytes) -> dict:
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res = dict(
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zip(
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("panel_voltage", "panel_current", "panel_power", "load_enabled"),
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struct.unpack("!HHHx?", data),
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)
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)
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res["panel_voltage"] /= 10
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res["panel_current"] /= 100
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STATUS.update(res)
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def handleNotification(self, cHandle, data):
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# print(cHandle, data, dlen)
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# elif operation == 6 and cc == 1:
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# res = dict(zip(("load_enabled",), struct.unpack("!xxxxx?xx", data)))
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# STATUS.update(res)
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self.data.extend(data)
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c_crc = modbus(bytes(self.data[:-2]))
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# byte order is inverted in regards to libscrc output
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d_crc = self.data[-1] << 8 | self.data[-2]
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# print(hex(c_crc), hex(d_crc))
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if c_crc == d_crc:
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parsePacket(self.data)
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self.data.clear()
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log(str(res))
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return res
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def write(fh, data):
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@ -238,18 +220,6 @@ def construct_request(address, words=1, action=ACTION_READ, marker=0xFF):
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return struct.pack("!BBHH", marker, action, address, words)
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def poll(dev: btle.Peripheral, timeout: float = 1) -> bool:
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start = time.time()
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while not dev.waitForNotifications(0.2):
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if time.time() < start + timeout:
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return False
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while dev.waitForNotifications(0.2):
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pass
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return True
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def log(string: str):
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print(datetime.datetime.utcnow().isoformat(" "), string)
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sys.stdout.flush()
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@ -275,51 +245,50 @@ def parse_packet(data):
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return payload
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def readMemory(fh: RawIOBase, address: int, words: int = 1):
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write(fh, construct_request(address, words=words))
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header = fh.read(3)
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if header and len(header) == 3:
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tag, operation, size = header
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data = fh.read(size)
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_crc = fh.read(2)
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if data and _crc:
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crc = struct.unpack_from("<H", _crc)[0]
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calculated_crc = modbus(bytes([tag, operation, size, *data]))
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if crc == calculated_crc:
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return data
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if __name__ == "__main__":
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dlgt = Delegate()
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prev = time.time() - INTERVAL
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while True:
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try:
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log("Connecting...")
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with btle.Peripheral(MAC).withDelegate(dlgt) as dev:
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from feasycom_ble import WRITE_DEVICE
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wd = dev.getCharacteristics(uuid=WRITE_DEVICE)[0]
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with BTLEUart(MAC, timeout=10) as dev:
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log("Connected.")
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poll(dev)
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write(wd, construct_request(0, 32))
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poll(dev)
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poll(dev)
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poll(dev)
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# write(dev, construct_request(0, 32))
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# Memory dump
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# for address in range(0, 0x10000, 16):
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# log(f"Reading 0x{address:04X}...")
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# write(wd, construct_request(address, 16))
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# poll(dev)
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# poll(dev)
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# poll(dev)
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# poll(dev)
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# poll(dev)
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while True:
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poll(dev)
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now = time.time()
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diff = now - prev
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if diff >= INTERVAL:
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prev += INTERVAL
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write(wd, construct_request(0x0107, 4)) # CMD_GET_PANEL_STATUS
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poll(dev)
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res = readMemory(dev, 0x0107, 4) # CMD_GET_PANEL_STATUS
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if res:
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parse_panel_status(res)
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write(wd, construct_request(0x0100, 7)) # CMD_GET_BATTERY_STATE
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poll(dev)
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res = readMemory(dev, 0x0100, 7) # CMD_GET_BATTERY_STATE
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if res:
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parse_battery_state(res)
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# if STATUS.get('load_enabled'):
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# write(wd, CMD_DISABLE_LOAD)
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