mirror of
https://github.com/markqvist/Reticulum.git
synced 2024-12-23 04:10:18 +00:00
Added Android serial interface
This commit is contained in:
Mark Qvist
parent
094d2f2079
commit
e5309caf48
249
RNS/Interfaces/Android/SerialInterface.py
Normal file
249
RNS/Interfaces/Android/SerialInterface.py
Normal file
@ -0,0 +1,249 @@
|
||||
# MIT License
|
||||
#
|
||||
# Copyright (c) 2016-2022 Mark Qvist / unsigned.io
|
||||
#
|
||||
# Permission is hereby granted, free of charge, to any person obtaining a copy
|
||||
# of this software and associated documentation files (the "Software"), to deal
|
||||
# in the Software without restriction, including without limitation the rights
|
||||
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
||||
# copies of the Software, and to permit persons to whom the Software is
|
||||
# furnished to do so, subject to the following conditions:
|
||||
#
|
||||
# The above copyright notice and this permission notice shall be included in all
|
||||
# copies or substantial portions of the Software.
|
||||
#
|
||||
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
||||
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
||||
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
||||
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
||||
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
||||
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
|
||||
# SOFTWARE.
|
||||
|
||||
from RNS.Interfaces.Interface import Interface
|
||||
from time import sleep
|
||||
import sys
|
||||
import threading
|
||||
import time
|
||||
import RNS
|
||||
|
||||
class HDLC():
|
||||
# The Serial Interface packetizes data using
|
||||
# simplified HDLC framing, similar to PPP
|
||||
FLAG = 0x7E
|
||||
ESC = 0x7D
|
||||
ESC_MASK = 0x20
|
||||
|
||||
@staticmethod
|
||||
def escape(data):
|
||||
data = data.replace(bytes([HDLC.ESC]), bytes([HDLC.ESC, HDLC.ESC^HDLC.ESC_MASK]))
|
||||
data = data.replace(bytes([HDLC.FLAG]), bytes([HDLC.ESC, HDLC.FLAG^HDLC.ESC_MASK]))
|
||||
return data
|
||||
|
||||
class SerialInterface(Interface):
|
||||
MAX_CHUNK = 32768
|
||||
|
||||
owner = None
|
||||
port = None
|
||||
speed = None
|
||||
databits = None
|
||||
parity = None
|
||||
stopbits = None
|
||||
serial = None
|
||||
|
||||
def __init__(self, owner, name, port, speed, databits, parity, stopbits):
|
||||
import importlib
|
||||
if RNS.vendor.platformutils.is_android():
|
||||
self.on_android = True
|
||||
if importlib.util.find_spec('usbserial4a') != None:
|
||||
from usbserial4a import serial4a as serial
|
||||
self.parity = "N"
|
||||
else:
|
||||
RNS.log("Could not load USB serial module for Android, RNode interface cannot be created.", RNS.LOG_CRITICAL)
|
||||
RNS.panic()
|
||||
else:
|
||||
raise SystemError("Android-specific interface was used on non-Android OS")
|
||||
|
||||
self.rxb = 0
|
||||
self.txb = 0
|
||||
|
||||
self.HW_MTU = 564
|
||||
|
||||
self.pyserial = serial
|
||||
self.serial = None
|
||||
self.owner = owner
|
||||
self.name = name
|
||||
self.port = port
|
||||
self.speed = speed
|
||||
self.databits = databits
|
||||
self.parity = "N"
|
||||
self.stopbits = stopbits
|
||||
self.timeout = 100
|
||||
self.online = False
|
||||
self.bitrate = self.speed
|
||||
|
||||
if parity.lower() == "e" or parity.lower() == "even":
|
||||
self.parity = "E"
|
||||
|
||||
if parity.lower() == "o" or parity.lower() == "odd":
|
||||
self.parity = "O"
|
||||
|
||||
try:
|
||||
self.open_port()
|
||||
except Exception as e:
|
||||
RNS.log("Could not open serial port for interface "+str(self), RNS.LOG_ERROR)
|
||||
raise e
|
||||
|
||||
if self.serial.is_open:
|
||||
self.configure_device()
|
||||
else:
|
||||
raise IOError("Could not open serial port")
|
||||
|
||||
|
||||
def open_port(self):
|
||||
RNS.log("Opening serial port "+self.port+"...")
|
||||
# Get device parameters
|
||||
from usb4a import usb
|
||||
device = usb.get_usb_device(self.port)
|
||||
if device:
|
||||
vid = device.getVendorId()
|
||||
pid = device.getProductId()
|
||||
|
||||
# Driver overrides for speficic chips
|
||||
proxy = self.pyserial.get_serial_port
|
||||
if vid == 0x1A86 and pid == 0x55D4:
|
||||
# Force CDC driver for Qinheng CH34x
|
||||
RNS.log(str(self)+" using CDC driver for "+RNS.hexrep(vid)+":"+RNS.hexrep(pid), RNS.LOG_DEBUG)
|
||||
from usbserial4a.cdcacmserial4a import CdcAcmSerial
|
||||
proxy = CdcAcmSerial
|
||||
|
||||
self.serial = proxy(
|
||||
self.port,
|
||||
baudrate = self.speed,
|
||||
bytesize = self.databits,
|
||||
parity = self.parity,
|
||||
stopbits = self.stopbits,
|
||||
xonxoff = False,
|
||||
rtscts = False,
|
||||
timeout = None,
|
||||
inter_byte_timeout = None,
|
||||
# write_timeout = wtimeout,
|
||||
dsrdtr = False,
|
||||
)
|
||||
|
||||
if vid == 0x0403:
|
||||
# Hardware parameters for FTDI devices @ 115200 baud
|
||||
self.serial.DEFAULT_READ_BUFFER_SIZE = 16 * 1024
|
||||
self.serial.USB_READ_TIMEOUT_MILLIS = 100
|
||||
self.serial.timeout = 0.1
|
||||
elif vid == 0x10C4:
|
||||
# Hardware parameters for SiLabs CP210x @ 115200 baud
|
||||
self.serial.DEFAULT_READ_BUFFER_SIZE = 64
|
||||
self.serial.USB_READ_TIMEOUT_MILLIS = 12
|
||||
self.serial.timeout = 0.012
|
||||
elif vid == 0x1A86 and pid == 0x55D4:
|
||||
# Hardware parameters for Qinheng CH34x @ 115200 baud
|
||||
self.serial.DEFAULT_READ_BUFFER_SIZE = 64
|
||||
self.serial.USB_READ_TIMEOUT_MILLIS = 12
|
||||
self.serial.timeout = 0.1
|
||||
else:
|
||||
# Default values
|
||||
self.serial.DEFAULT_READ_BUFFER_SIZE = 1 * 1024
|
||||
self.serial.USB_READ_TIMEOUT_MILLIS = 100
|
||||
self.serial.timeout = 0.1
|
||||
|
||||
RNS.log(str(self)+" USB read buffer size set to "+RNS.prettysize(self.serial.DEFAULT_READ_BUFFER_SIZE), RNS.LOG_DEBUG)
|
||||
RNS.log(str(self)+" USB read timeout set to "+str(self.serial.USB_READ_TIMEOUT_MILLIS)+"ms", RNS.LOG_DEBUG)
|
||||
RNS.log(str(self)+" USB write timeout set to "+str(self.serial.USB_WRITE_TIMEOUT_MILLIS)+"ms", RNS.LOG_DEBUG)
|
||||
|
||||
def configure_device(self):
|
||||
sleep(0.5)
|
||||
thread = threading.Thread(target=self.readLoop)
|
||||
thread.daemon = True
|
||||
thread.start()
|
||||
self.online = True
|
||||
RNS.log("Serial port "+self.port+" is now open", RNS.LOG_VERBOSE)
|
||||
|
||||
|
||||
def processIncoming(self, data):
|
||||
self.rxb += len(data)
|
||||
self.owner.inbound(data, self)
|
||||
|
||||
|
||||
def processOutgoing(self,data):
|
||||
if self.online:
|
||||
data = bytes([HDLC.FLAG])+HDLC.escape(data)+bytes([HDLC.FLAG])
|
||||
written = self.serial.write(data)
|
||||
self.txb += len(data)
|
||||
if written != len(data):
|
||||
raise IOError("Serial interface only wrote "+str(written)+" bytes of "+str(len(data)))
|
||||
|
||||
def readLoop(self):
|
||||
try:
|
||||
in_frame = False
|
||||
escape = False
|
||||
data_buffer = b""
|
||||
last_read_ms = int(time.time()*1000)
|
||||
|
||||
while self.serial.is_open:
|
||||
serial_bytes = self.serial.read()
|
||||
got = len(serial_bytes)
|
||||
|
||||
for byte in serial_bytes:
|
||||
last_read_ms = int(time.time()*1000)
|
||||
|
||||
if (in_frame and byte == HDLC.FLAG):
|
||||
in_frame = False
|
||||
self.processIncoming(data_buffer)
|
||||
elif (byte == HDLC.FLAG):
|
||||
in_frame = True
|
||||
data_buffer = b""
|
||||
elif (in_frame and len(data_buffer) < self.HW_MTU):
|
||||
if (byte == HDLC.ESC):
|
||||
escape = True
|
||||
else:
|
||||
if (escape):
|
||||
if (byte == HDLC.FLAG ^ HDLC.ESC_MASK):
|
||||
byte = HDLC.FLAG
|
||||
if (byte == HDLC.ESC ^ HDLC.ESC_MASK):
|
||||
byte = HDLC.ESC
|
||||
escape = False
|
||||
data_buffer = data_buffer+bytes([byte])
|
||||
|
||||
if got == 0:
|
||||
time_since_last = int(time.time()*1000) - last_read_ms
|
||||
if len(data_buffer) > 0 and time_since_last > self.timeout:
|
||||
data_buffer = b""
|
||||
in_frame = False
|
||||
escape = False
|
||||
# sleep(0.08)
|
||||
|
||||
except Exception as e:
|
||||
self.online = False
|
||||
RNS.log("A serial port error occurred, the contained exception was: "+str(e), RNS.LOG_ERROR)
|
||||
RNS.log("The interface "+str(self)+" experienced an unrecoverable error and is now offline.", RNS.LOG_ERROR)
|
||||
|
||||
if RNS.Reticulum.panic_on_interface_error:
|
||||
RNS.panic()
|
||||
|
||||
RNS.log("Reticulum will attempt to reconnect the interface periodically.", RNS.LOG_ERROR)
|
||||
|
||||
self.online = False
|
||||
self.serial.close()
|
||||
self.reconnect_port()
|
||||
|
||||
def reconnect_port(self):
|
||||
while not self.online:
|
||||
try:
|
||||
time.sleep(5)
|
||||
RNS.log("Attempting to reconnect serial port "+str(self.port)+" for "+str(self)+"...", RNS.LOG_VERBOSE)
|
||||
self.open_port()
|
||||
if self.serial.is_open:
|
||||
self.configure_device()
|
||||
except Exception as e:
|
||||
RNS.log("Error while reconnecting port, the contained exception was: "+str(e), RNS.LOG_ERROR)
|
||||
|
||||
RNS.log("Reconnected serial port for "+str(self))
|
||||
|
||||
def __str__(self):
|
||||
return "SerialInterface["+self.name+"]"
|
||||
Loading…
Reference in New Issue
Block a user