|
1
|
|
|
from queue import Queue |
|
2
|
|
|
from threading import Thread, Event |
|
3
|
|
|
|
|
4
|
|
|
from serial import Serial |
|
5
|
|
|
from serial import SerialTimeoutException, SerialException |
|
6
|
|
|
|
|
7
|
|
|
from libAnt.drivers.driver import Driver, DriverException |
|
8
|
|
|
from libAnt.loggers.logger import Logger |
|
9
|
|
|
|
|
10
|
|
|
|
|
11
|
|
|
class SerialDriver(Driver): |
|
12
|
|
|
""" |
|
13
|
|
|
An implementation of a serial ANT+ device driver |
|
14
|
|
|
""" |
|
15
|
|
|
|
|
16
|
|
|
def __init__(self, device: str, baudRate: int = 115200, logger: Logger = None): |
|
17
|
|
|
super().__init__(logger=logger) |
|
18
|
|
|
self._device = device |
|
19
|
|
|
self._baudRate = baudRate |
|
20
|
|
|
self._serial = None |
|
21
|
|
|
|
|
22
|
|
|
def __str__(self): |
|
23
|
|
|
if self.isOpen(): |
|
24
|
|
|
return self._device + " @ " + str(self._baudRate) |
|
25
|
|
|
return None |
|
26
|
|
|
|
|
27
|
|
|
def _isOpen(self) -> bool: |
|
28
|
|
|
return self._serial is not None |
|
29
|
|
|
|
|
30
|
|
|
def _open(self) -> None: |
|
31
|
|
|
try: |
|
32
|
|
|
self._serial = Serial(port=self._device, baudrate=self._baudRate) |
|
33
|
|
|
except SerialException as e: |
|
34
|
|
|
raise DriverException(str(e)) |
|
35
|
|
|
|
|
36
|
|
|
if not self._serial.isOpen(): |
|
37
|
|
|
raise DriverException("Could not open specified device") |
|
38
|
|
|
|
|
39
|
|
|
def _close(self) -> None: |
|
40
|
|
|
self._serial.close() |
|
41
|
|
|
self._serial = None |
|
42
|
|
|
|
|
43
|
|
|
def _read(self, count: int, timeout=None) -> bytes: |
|
44
|
|
|
return self._serial.read(count) |
|
45
|
|
|
|
|
46
|
|
|
def _write(self, data: bytes) -> None: |
|
47
|
|
|
try: |
|
48
|
|
|
self._serial.write(data) |
|
49
|
|
|
self._serial.flush() |
|
50
|
|
|
except SerialTimeoutException as e: |
|
51
|
|
|
raise DriverException(str(e)) |
|
52
|
|
|
|
|
53
|
|
|
def _abort(self) -> None: |
|
54
|
|
|
if self._serial is not None: |
|
55
|
|
|
self._serial.cancel_read() |
|
56
|
|
|
self._serial.cancel_write() |
|
57
|
|
|
self._serial.reset_input_buffer() |
|
58
|
|
|
self._serial.reset_output_buffer() |
half2me /
libant
