flowswitch
parent
856a226b6f
commit
f9c0cbfd0e
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@ -2,29 +2,61 @@
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from __future__ import absolute_import
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import pygatt
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from .base import BaseLink, LinkTimeoutException, LinkOpenException
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from binascii import hexlify
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SCAN_TIMEOUT = 3
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import queue
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class Fifo():
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def __init__(self):
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self.q = queue.Queue()
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def write(self, data): # put bytes
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for b in data:
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self.q.put(b)
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def read(self, size=1, timeout=None): # but read string
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res = ""
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for i in xrange(size):
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res += chr(self.q.get(True, timeout))
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return res
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SCAN_TIMEOUT = 3
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#_cccd_uuid = "00002902-0000-1000-8000-00805f9b34fb"
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_rx_char_uuid = "6e400002-b5a3-f393-e0a9-e50e24dcca9e"
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_tx_char_uuid = "6e400003-b5a3-f393-e0a9-e50e24dcca9e"
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class BLELink():
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def __init__(self, dump=False):
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self.dev = None
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self.dump = dump
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class BLELink(BaseLink):
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def __init__(self, *args, **kwargs):
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super(BLELink, self).__init__(*args, **kwargs)
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self._adapter = None
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self._dev = None
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self._wr_handle = None
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self._rx_fifo = Fifo()
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def __enter__(self):
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self.adapter = pygatt.BGAPIBackend()
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self.adapter.start()
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self._adapter = pygatt.BGAPIBackend()
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self._adapter.start()
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return self
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def __exit__(self, exc_type, exc_value, traceback):
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self.close()
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def _make_rx_cb(self): # this is a closure :)
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def rx_cb(handle, value):
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self._rx_fifo.write(value)
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return rx_cb
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def scan(self):
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res = []
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devices = self.adapter.scan(timeout=SCAN_TIMEOUT)
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devices = self._adapter.scan(timeout=SCAN_TIMEOUT)
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for dev in devices:
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if dev["name"].startswith(u"MISc"):
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res.append((dev["name"], dev["address"]))
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@ -32,18 +64,27 @@ class BLELink():
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def open(self, port):
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self.dev = self.adapter.connect(port, address_type=pygatt.BLEAddressType.random)
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try:
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self._dev = self._adapter.connect(port, address_type=pygatt.BLEAddressType.random)
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self._dev.subscribe(_tx_char_uuid, callback=self._make_rx_cb())
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self._wr_handle = self._dev.get_handle(_rx_char_uuid)
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except pygatt.exceptions.NotConnectedError:
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raise LinkOpenException
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def close(self):
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if self.dev:
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self.dev.disconnect()
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self.dev = None
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self.adapter.stop()
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if self._dev:
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self._dev.disconnect()
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self._dev = None
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if self._adapter:
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self._adapter.stop()
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def read(self, size):
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data = self.dev.read(size)
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try:
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data = self._rx_fifo.read(size, timeout=self.timeout)
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except queue.Empty:
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raise LinkTimeoutException
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if self.dump:
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print "<", hexlify(data).upper()
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return data
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@ -52,7 +93,7 @@ class BLELink():
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def write(self, data):
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if self.dump:
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print ">", hexlify(data).upper()
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return self.dev.write(data)
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self._dev.char_write_handle(self._wr_handle, bytearray(data))
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__all__ = ["BLELink"]
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@ -7,7 +7,7 @@ from binascii import hexlify
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from .base import BaseLink, LinkTimeoutException, LinkOpenException
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class SerialLink():
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class SerialLink(BaseLink):
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def __init__(self, *args, **kwargs):
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super(SerialLink, self).__init__(*args, **kwargs)
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self.com = None
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@ -5,28 +5,34 @@ from .packet import BasePacket
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class XiaomiTransport(BT):
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HEAD2ESC = 0x20
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ESC2HEAD = 0x23
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HEAD2BMS = 0x22
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BMS2HEAD = 0x25
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DEV01 = 0x01
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MASTER2ESC = 0x20
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ESC2MASTER = 0x23
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_SaDa2Addr = { BT.HOST : { BT.DEV01 : DEV01, BT.ESC : HEAD2ESC, BT.BMS : HEAD2BMS },
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BT.ESC : { BT.HOST : ESC2HEAD, BT.BMS : HEAD2BMS, BT.DEV01 : DEV01 },
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BT.BMS : { BT.HOST : BMS2HEAD, BT.ESC : BMS2HEAD, BT.DEV01 : DEV01 },
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MASTER2BLE = 0x21
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BLE2MASTER = 0x24
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MASTER2BMS = 0x22
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BMS2MASTER = 0x25
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DEV01 = 0x01
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DEVFF = 0xFF
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_SaDa2Addr = { BT.HOST : { BT.DEV01 : DEV01, BT.ESC : MASTER2ESC, BT.BLE : MASTER2BLE, BT.BMS : MASTER2BMS },
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BT.ESC : { BT.HOST : ESC2MASTER, BT.BLE : MASTER2BLE, BT.BMS : MASTER2BMS, BT.DEV01 : DEV01 },
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BT.BMS : { BT.HOST : BMS2MASTER, BT.ESC : BMS2MASTER, BT.DEV01 : DEV01 },
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BT.DEV01 : {BT.HOST : DEV01, BT.ESC : DEV01, BT.BMS : DEV01 } }
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# TBC
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_BleAddr2SaDa = { HEAD2ESC : (BT.HOST, BT.ESC),
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ESC2HEAD : (BT.ESC, BT.HOST),
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HEAD2BMS : (BT.HOST, BT.BMS),
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BMS2HEAD : (BT.BMS, BT.HOST),
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_BleAddr2SaDa = { MASTER2ESC : (BT.HOST, BT.ESC),
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ESC2MASTER : (BT.ESC, BT.HOST),
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MASTER2BMS : (BT.HOST, BT.BMS),
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BMS2MASTER : (BT.BMS, BT.HOST),
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DEV01 : (BT.DEV01, BT.HOST) }
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_BmsAddr2SaDa = { HEAD2ESC : (BT.BMS, BT.ESC),
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ESC2HEAD : (BT.ESC, BT.BMS),
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HEAD2BMS : (BT.ESC, BT.BMS),
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BMS2HEAD : (BT.BMS, BT.ESC),
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_BmsAddr2SaDa = { MASTER2ESC : (BT.BMS, BT.ESC),
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ESC2MASTER : (BT.ESC, BT.BMS),
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MASTER2BMS : (BT.ESC, BT.BMS),
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BMS2MASTER : (BT.BMS, BT.ESC),
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DEV01 : (BT.DEV01, BT.BMS) }
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@ -0,0 +1,41 @@
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from py9b.link.base import LinkOpenException, LinkTimeoutException
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from py9b.link.tcp import TCPLink
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from py9b.link.ble import BLELink
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from py9b.transport.base import BaseTransport as BT
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from py9b.transport.packet import BasePacket as PKT
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from py9b.transport.xiaomi import XiaomiTransport
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READ_CHUNK_SIZE = 0x40
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#link = SerialLink()
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#link = TCPLink()
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link = BLELink()
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with link:
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print "Scanning..."
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ports = link.scan()
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print ports
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tran = XiaomiTransport(link)
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#link.open(("192.168.1.45", 6000))
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link.open(ports[0][1])
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print "Connected"
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req = PKT(src=BT.HOST, dst=BT.ESC, cmd=0x01, reg=0, data=chr(READ_CHUNK_SIZE))
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hfo = open("EscRegs.bin", "wb")
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for i in xrange(0, 0x200, READ_CHUNK_SIZE):
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print ".",
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req.reg = i>>1
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for retry in xrange(3):
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tran.send(req)
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try:
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rsp = tran.recv()
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except LinkTimeoutException:
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continue
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break
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hfo.write(rsp.data)
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hfo.close()
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link.close()
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