Added BLE support to Android RNodeInterface
This commit is contained in:
Mark Qvist
parent
b5bde99322
commit
8adab7ee7d
|
|
@ -28,6 +28,9 @@ import time
|
|||
import math
|
||||
import RNS
|
||||
|
||||
from able import BluetoothDispatcher, GATT_SUCCESS
|
||||
from able.adapter import require_bluetooth_enabled
|
||||
|
||||
class KISS():
|
||||
FEND = 0xC0
|
||||
FESC = 0xDB
|
||||
|
|
@ -54,6 +57,7 @@ class KISS():
|
|||
CMD_STAT_SNR = 0x24
|
||||
CMD_STAT_CHTM = 0x25
|
||||
CMD_STAT_PHYPRM = 0x26
|
||||
CMD_STAT_BAT = 0x27
|
||||
CMD_BLINK = 0x30
|
||||
CMD_RANDOM = 0x40
|
||||
CMD_FB_EXT = 0x41
|
||||
|
|
@ -89,6 +93,10 @@ class KISS():
|
|||
return data
|
||||
|
||||
class AndroidBluetoothManager():
|
||||
DEVICE_TYPE_CLASSIC = 1
|
||||
DEVICE_TYPE_LE = 2
|
||||
DEVICE_TYPE_DUAL = 3
|
||||
|
||||
def __init__(self, owner, target_device_name = None, target_device_address = None):
|
||||
from jnius import autoclass
|
||||
self.owner = owner
|
||||
|
|
@ -237,6 +245,11 @@ class RNodeInterface(Interface):
|
|||
Q_SNR_MAX = 6
|
||||
Q_SNR_STEP = 2
|
||||
|
||||
BATTERY_STATE_UNKNOWN = 0x00
|
||||
BATTERY_STATE_DISCHARGING = 0x01
|
||||
BATTERY_STATE_CHARGING = 0x02
|
||||
BATTERY_STATE_CHARGED = 0x03
|
||||
|
||||
@classmethod
|
||||
def bluetooth_control(device_serial = None, port = None, enable_bluetooth = False, disable_bluetooth = False, pairing_mode = False):
|
||||
if (port != None or device_serial != None) and (enable_bluetooth or disable_bluetooth or pairing_mode):
|
||||
|
|
@ -321,7 +334,8 @@ class RNodeInterface(Interface):
|
|||
self, owner, name, port, frequency = None, bandwidth = None, txpower = None,
|
||||
sf = None, cr = None, flow_control = False, id_interval = None,
|
||||
allow_bluetooth = False, target_device_name = None,
|
||||
target_device_address = None, id_callsign = None, st_alock = None, lt_alock = None):
|
||||
target_device_address = None, id_callsign = None, st_alock = None, lt_alock = None,
|
||||
ble_addr = None, ble_name = None, force_ble=False):
|
||||
import importlib
|
||||
if RNS.vendor.platformutils.is_android():
|
||||
self.on_android = True
|
||||
|
|
@ -368,9 +382,19 @@ class RNodeInterface(Interface):
|
|||
self.stopbits = 1
|
||||
self.timeout = 150
|
||||
self.online = False
|
||||
self.detached = False
|
||||
self.hw_errors = []
|
||||
self.allow_bluetooth = allow_bluetooth
|
||||
|
||||
self.use_ble = False
|
||||
self.ble_name = ble_name
|
||||
self.ble_addr = ble_addr
|
||||
self.ble = None
|
||||
self.ble_rx_lock = threading.Lock()
|
||||
self.ble_tx_lock = threading.Lock()
|
||||
self.ble_rx_queue= b""
|
||||
self.ble_tx_queue= b""
|
||||
|
||||
self.frequency = frequency
|
||||
self.bandwidth = bandwidth
|
||||
self.txpower = txpower
|
||||
|
|
@ -414,6 +438,8 @@ class RNodeInterface(Interface):
|
|||
self.r_symbol_rate = None
|
||||
self.r_preamble_symbols = None
|
||||
self.r_premable_time_ms = None
|
||||
self.r_battery_state = RNodeInterface.BATTERY_STATE_UNKNOWN
|
||||
self.r_battery_percent = 0
|
||||
|
||||
self.packet_queue = []
|
||||
self.flow_control = flow_control
|
||||
|
|
@ -423,6 +449,9 @@ class RNodeInterface(Interface):
|
|||
self.port_io_timeout = RNodeInterface.PORT_IO_TIMEOUT
|
||||
self.last_imagedata = None
|
||||
|
||||
if force_ble or self.ble_addr != None or self.ble_name != None:
|
||||
self.use_ble = True
|
||||
|
||||
self.validcfg = True
|
||||
if (self.frequency < RNodeInterface.FREQ_MIN or self.frequency > RNodeInterface.FREQ_MAX):
|
||||
RNS.log("Invalid frequency configured for "+str(self), RNS.LOG_ERROR)
|
||||
|
|
@ -515,72 +544,82 @@ class RNodeInterface(Interface):
|
|||
raise IOError("No ports available for writing")
|
||||
|
||||
def open_port(self):
|
||||
if self.port != None:
|
||||
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()
|
||||
if not self.use_ble:
|
||||
if self.port != None:
|
||||
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
|
||||
# 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,
|
||||
)
|
||||
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
|
||||
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)
|
||||
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)
|
||||
|
||||
elif self.allow_bluetooth:
|
||||
if self.bt_manager == None:
|
||||
self.bt_manager = AndroidBluetoothManager(
|
||||
owner = self,
|
||||
target_device_name = self.bt_target_device_name,
|
||||
target_device_address = self.bt_target_device_address
|
||||
)
|
||||
elif self.allow_bluetooth:
|
||||
if self.bt_manager == None:
|
||||
self.bt_manager = AndroidBluetoothManager(
|
||||
owner = self,
|
||||
target_device_name = self.bt_target_device_name,
|
||||
target_device_address = self.bt_target_device_address
|
||||
)
|
||||
|
||||
if self.bt_manager != None:
|
||||
self.bt_manager.connect_any_device()
|
||||
if self.bt_manager != None:
|
||||
self.bt_manager.connect_any_device()
|
||||
|
||||
else:
|
||||
if self.ble == None:
|
||||
self.ble = BLEConnection(owner=self, target_name=self.ble_name, target_bt_addr=self.ble_addr)
|
||||
self.serial = self.ble
|
||||
|
||||
open_time = time.time()
|
||||
while not self.ble.connected and time.time() < open_time + self.ble.CONNECT_TIMEOUT:
|
||||
time.sleep(1)
|
||||
|
||||
|
||||
def configure_device(self):
|
||||
|
|
@ -590,7 +629,17 @@ class RNodeInterface(Interface):
|
|||
thread.start()
|
||||
|
||||
self.detect()
|
||||
sleep(0.5)
|
||||
if not self.use_ble:
|
||||
sleep(0.5)
|
||||
else:
|
||||
ble_detect_timeout = 5
|
||||
detect_time = time.time()
|
||||
while not self.detected and time.time() < detect_time + ble_detect_timeout:
|
||||
time.sleep(0.1)
|
||||
if self.detected:
|
||||
detect_time = RNS.prettytime(time.time()-detect_time)
|
||||
else:
|
||||
RNS.log(f"RNode detect timed out over {self.port}", RNS.LOG_ERROR)
|
||||
|
||||
if not self.detected:
|
||||
raise IOError("Could not detect device")
|
||||
|
|
@ -654,6 +703,9 @@ class RNodeInterface(Interface):
|
|||
self.setRadioState(KISS.RADIO_STATE_ON)
|
||||
time.sleep(0.15)
|
||||
|
||||
if self.use_ble:
|
||||
time.sleep(1)
|
||||
|
||||
def detect(self):
|
||||
kiss_command = bytes([KISS.FEND, KISS.CMD_DETECT, KISS.DETECT_REQ, KISS.FEND, KISS.CMD_FW_VERSION, 0x00, KISS.FEND, KISS.CMD_PLATFORM, 0x00, KISS.FEND, KISS.CMD_MCU, 0x00, KISS.FEND])
|
||||
written = self.write_mux(kiss_command)
|
||||
|
|
@ -1140,6 +1192,25 @@ class RNodeInterface(Interface):
|
|||
RNS.log(str(self)+" Radio reporting symbol time is "+str(round(self.r_symbol_time_ms,2))+"ms (at "+str(self.r_symbol_rate)+" baud)", RNS.LOG_DEBUG)
|
||||
RNS.log(str(self)+" Radio reporting preamble is "+str(self.r_preamble_symbols)+" symbols ("+str(self.r_premable_time_ms)+"ms)", RNS.LOG_DEBUG)
|
||||
RNS.log(str(self)+" Radio reporting CSMA slot time is "+str(self.r_csma_slot_time_ms)+"ms", RNS.LOG_DEBUG)
|
||||
elif (command == KISS.CMD_STAT_BAT):
|
||||
if (byte == KISS.FESC):
|
||||
escape = True
|
||||
else:
|
||||
if (escape):
|
||||
if (byte == KISS.TFEND):
|
||||
byte = KISS.FEND
|
||||
if (byte == KISS.TFESC):
|
||||
byte = KISS.FESC
|
||||
escape = False
|
||||
command_buffer = command_buffer+bytes([byte])
|
||||
if (len(command_buffer) == 2):
|
||||
bat_percent = command_buffer[1]
|
||||
if bat_percent > 100:
|
||||
bat_percent = 100
|
||||
if bat_percent < 0:
|
||||
bat_percent = 0
|
||||
self.r_battery_state = command_buffer[0]
|
||||
self.r_battery_percent = bat_percent
|
||||
elif (command == KISS.CMD_RANDOM):
|
||||
self.r_random = byte
|
||||
elif (command == KISS.CMD_PLATFORM):
|
||||
|
|
@ -1212,7 +1283,8 @@ class RNodeInterface(Interface):
|
|||
if self.bt_manager != None:
|
||||
self.bt_manager.close()
|
||||
|
||||
self.reconnect_port()
|
||||
if not self.detached:
|
||||
self.reconnect_port()
|
||||
|
||||
def reconnect_port(self):
|
||||
while not self.online and len(self.hw_errors) == 0:
|
||||
|
|
@ -1247,13 +1319,230 @@ class RNodeInterface(Interface):
|
|||
RNS.log("Reconnected serial port for "+str(self))
|
||||
|
||||
def detach(self):
|
||||
self.detached = True
|
||||
self.disable_external_framebuffer()
|
||||
self.setRadioState(KISS.RADIO_STATE_OFF)
|
||||
self.leave()
|
||||
|
||||
if self.use_ble:
|
||||
self.ble.close()
|
||||
|
||||
def should_ingress_limit(self):
|
||||
return False
|
||||
|
||||
def get_battery_state(self):
|
||||
return self.r_battery_state
|
||||
|
||||
def get_battery_state_string(self):
|
||||
if self.r_battery_state == RNodeInterface.BATTERY_STATE_CHARGED:
|
||||
return "charged"
|
||||
elif self.r_battery_state == RNodeInterface.BATTERY_STATE_CHARGING:
|
||||
return "charging"
|
||||
elif self.r_battery_state == RNodeInterface.BATTERY_STATE_DISCHARGING:
|
||||
return "discharging"
|
||||
else:
|
||||
return "unknown"
|
||||
|
||||
def get_battery_percent(self):
|
||||
return self.r_battery_percent
|
||||
|
||||
def ble_receive(self, data):
|
||||
with self.ble_rx_lock:
|
||||
self.ble_rx_queue += data
|
||||
|
||||
def ble_waiting(self):
|
||||
return len(self.ble_tx_queue) > 0
|
||||
|
||||
def get_ble_waiting(self, n):
|
||||
with self.ble_tx_lock:
|
||||
data = self.ble_tx_queue[:n]
|
||||
self.ble_tx_queue = self.ble_tx_queue[n:]
|
||||
return data
|
||||
|
||||
def __str__(self):
|
||||
return "RNodeInterface["+str(self.name)+"]"
|
||||
|
||||
class BLEConnection(BluetoothDispatcher):
|
||||
UART_SERVICE_UUID = "6e400001-b5a3-f393-e0a9-e50e24dcca9e"
|
||||
UART_RX_CHAR_UUID = "6e400002-b5a3-f393-e0a9-e50e24dcca9e"
|
||||
UART_TX_CHAR_UUID = "6e400003-b5a3-f393-e0a9-e50e24dcca9e"
|
||||
MAX_GATT_ATTR_LEN = 512
|
||||
|
||||
SCAN_TIMEOUT = 2.0
|
||||
CONNECT_TIMEOUT = 7.0
|
||||
|
||||
@property
|
||||
def is_open(self):
|
||||
return self.connected
|
||||
|
||||
@property
|
||||
def in_waiting(self):
|
||||
return len(self.owner.ble_rx_queue) > 0
|
||||
|
||||
def write(self, data_bytes):
|
||||
with self.owner.ble_tx_lock:
|
||||
self.owner.ble_tx_queue += data_bytes
|
||||
return len(data_bytes)
|
||||
|
||||
def read(self):
|
||||
with self.owner.ble_rx_lock:
|
||||
data = self.owner.ble_rx_queue
|
||||
self.owner.ble_rx_queue = b""
|
||||
return data
|
||||
|
||||
def close(self):
|
||||
try:
|
||||
if self.connected:
|
||||
RNS.log(f"Disconnecting BLE device from {self.owner}", RNS.LOG_DEBUG)
|
||||
RNS.log("Waiting for BLE write buffer to empty...")
|
||||
while self.owner.ble_waiting():
|
||||
time.sleep(0.1)
|
||||
RNS.log("Writing concluded")
|
||||
|
||||
self.rx_char = None
|
||||
self.tx_char = None
|
||||
|
||||
RNS.log("Waiting for write thread to finish...")
|
||||
while self.write_thread != None:
|
||||
time.sleep(0.1)
|
||||
|
||||
RNS.log("Writing finished, closing GATT connection")
|
||||
self.close_gatt()
|
||||
|
||||
with self.owner.ble_rx_lock:
|
||||
self.owner.ble_rx_queue = b""
|
||||
|
||||
with self.owner.ble_tx_lock:
|
||||
self.owner.ble_tx_queue = b""
|
||||
|
||||
except Exception as e:
|
||||
RNS.log("An error occurred while closing BLE connection for {self.owner}: {e}", RNS.LOG_ERROR)
|
||||
RNS.trace_exception(e)
|
||||
|
||||
def __init__(self, owner=None, target_name=None, target_bt_addr=None):
|
||||
super(BLEConnection, self).__init__()
|
||||
self.owner = owner
|
||||
self.target_name = target_name
|
||||
self.target_bt_addr = target_bt_addr
|
||||
self.scan_timeout = BLEConnection.SCAN_TIMEOUT
|
||||
self.connect_timeout = BLEConnection.CONNECT_TIMEOUT
|
||||
self.ble_device = None
|
||||
self.connected = False
|
||||
self.running = False
|
||||
self.should_run = False
|
||||
self.connect_job_running = False
|
||||
self.write_thread = None
|
||||
self.mtu = 20
|
||||
|
||||
self.bt_manager = AndroidBluetoothManager(owner=self)
|
||||
|
||||
self.should_run = True
|
||||
self.connection_thread = threading.Thread(target=self.connection_job, daemon=True).start()
|
||||
|
||||
def write_loop(self):
|
||||
try:
|
||||
while self.connected and self.rx_char != None:
|
||||
if self.owner.ble_waiting():
|
||||
data = self.owner.get_ble_waiting(self.mtu)
|
||||
self.write_characteristic(self.rx_char, data)
|
||||
else:
|
||||
time.sleep(0.1)
|
||||
|
||||
except Exception as e:
|
||||
RNS.log("An error occurred in {self} write loop: {e}", RNS.LOG_ERROR)
|
||||
RNS.trace_exception(e)
|
||||
|
||||
self.write_thread = None
|
||||
|
||||
def connection_job(self):
|
||||
while self.should_run:
|
||||
if self.bt_manager.bt_enabled():
|
||||
if self.ble_device == None:
|
||||
self.ble_device = self.find_target_device()
|
||||
|
||||
if self.ble_device != None:
|
||||
if not self.connected:
|
||||
self.connect_device()
|
||||
|
||||
time.sleep(2)
|
||||
|
||||
def connect_device(self):
|
||||
if self.ble_device != None and self.bt_manager.bt_enabled():
|
||||
RNS.log(f"Trying to connect BLE device {self.ble_device.getName()} / {self.ble_device.getAddress()} for {self.owner}...", RNS.LOG_DEBUG)
|
||||
self.connect_by_device_address(self.ble_device.getAddress())
|
||||
end = time.time() + BLEConnection.CONNECT_TIMEOUT
|
||||
while time.time() < end and not self.connected:
|
||||
time.sleep(0.25)
|
||||
|
||||
if self.connected:
|
||||
self.owner.port = f"ble://{self.ble_device.getAddress()}"
|
||||
self.write_thread = threading.Thread(target=self.write_loop, daemon=True)
|
||||
self.write_thread.start()
|
||||
else:
|
||||
RNS.log(f"BLE device connection timed out for {self.owner}", RNS.LOG_DEBUG)
|
||||
self.close_gatt()
|
||||
|
||||
self.connect_job_running = False
|
||||
|
||||
def device_disconnected(self):
|
||||
RNS.log(f"BLE device for {self.owner} disconnected", RNS.LOG_NOTICE)
|
||||
self.connected = False
|
||||
self.ble_device = None
|
||||
self.close_gatt()
|
||||
|
||||
def find_target_device(self):
|
||||
found_device = None
|
||||
potential_devices = self.bt_manager.get_paired_devices()
|
||||
|
||||
if self.target_bt_addr != None:
|
||||
for device in potential_devices:
|
||||
if (device.getType() == AndroidBluetoothManager.DEVICE_TYPE_LE) or (device.getType() == AndroidBluetoothManager.DEVICE_TYPE_DUAL):
|
||||
if str(device.getAddress()).replace(":", "").lower() == str(self.target_bt_addr).replace(":", "").lower():
|
||||
found_device = device
|
||||
break
|
||||
|
||||
if not found_device and self.target_name != None:
|
||||
for device in potential_devices:
|
||||
if (device.getType() == AndroidBluetoothManager.DEVICE_TYPE_LE) or (device.getType() == AndroidBluetoothManager.DEVICE_TYPE_DUAL):
|
||||
if device.getName().lower() == self.target_name.lower():
|
||||
found_device = device
|
||||
break
|
||||
|
||||
if not found_device:
|
||||
for device in potential_devices:
|
||||
if (device.getType() == AndroidBluetoothManager.DEVICE_TYPE_LE) or (device.getType() == AndroidBluetoothManager.DEVICE_TYPE_DUAL):
|
||||
if device.getName().startswith("RNode "):
|
||||
found_device = device
|
||||
break
|
||||
|
||||
RNS.log("Found device "+str(found_device))
|
||||
|
||||
return found_device
|
||||
|
||||
def on_connection_state_change(self, status, state):
|
||||
if status == GATT_SUCCESS and state:
|
||||
self.discover_services()
|
||||
else:
|
||||
self.device_disconnected()
|
||||
|
||||
def on_services(self, status, services):
|
||||
self.request_mtu(BLEConnection.MAX_GATT_ATTR_LEN)
|
||||
self.rx_char = services.search(BLEConnection.UART_RX_CHAR_UUID)
|
||||
|
||||
if self.rx_char is not None:
|
||||
self.tx_char = services.search(BLEConnection.UART_TX_CHAR_UUID)
|
||||
|
||||
if self.tx_char is not None:
|
||||
if self.enable_notifications(self.tx_char):
|
||||
RNS.log("Enabled notifications for BLE TX characteristic")
|
||||
self.connected = True
|
||||
|
||||
def on_mtu_changed(self, mtu, status):
|
||||
if status == GATT_SUCCESS:
|
||||
self.mtu = min(mtu-5, BLEConnection.MAX_GATT_ATTR_LEN)
|
||||
RNS.log(f"BLE MTU updated to {self.mtu} for {self.owner}", RNS.LOG_DEBUG)
|
||||
|
||||
def on_characteristic_changed(self, characteristic):
|
||||
if characteristic.getUuid().toString() == BLEConnection.UART_TX_CHAR_UUID:
|
||||
recvd = bytes(characteristic.getValue())
|
||||
self.owner.ble_receive(recvd)
|
||||
Loading…
Reference in New Issue