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refactor-s
| Author | SHA1 | Date | |
|---|---|---|---|
|
d7e43f7d0d | ||
|
ec6bb9564b |
@ -1,13 +1,10 @@
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'''Enables splitting keyboards wirelessly or wired'''
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import busio
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from micropython import const
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from supervisor import runtime, ticks_ms
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from supervisor import runtime
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from keypad import Event as KeyEvent
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from storage import getmount
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from kmk.hid import HIDModes
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from kmk.kmktime import check_deadline
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from kmk.modules import Module
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@ -21,6 +18,7 @@ class SplitType:
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I2C = const(2) # unused
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ONEWIRE = const(3) # unused
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BLE = const(4)
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PIO_UART = const(5)
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class Split(Module):
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@ -50,52 +48,79 @@ class Split(Module):
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self.data_pin2 = data_pin2
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self.uart_flip = uart_flip
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self._use_pio = use_pio
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self._uart = None
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self._transport = None
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self._uart_interval = uart_interval
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self._debug_enabled = debug_enabled
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self.uart_header = bytearray([0xB2]) # Any non-zero byte should work
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if self.split_type == SplitType.BLE:
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try:
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from adafruit_ble import BLERadio
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from adafruit_ble.advertising.standard import (
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ProvideServicesAdvertisement,
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)
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from adafruit_ble.services.nordic import UARTService
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self.BLERadio = BLERadio
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self.ProvideServicesAdvertisement = ProvideServicesAdvertisement
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self.UARTService = UARTService
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except ImportError:
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print('BLE Import error')
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return # BLE isn't supported on this platform
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self._ble_last_scan = ticks_ms() - 5000
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self._connection_count = 0
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self._split_connected = False
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self._uart_connection = None
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self._advertisment = None # Seems to not be used anywhere
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self._advertising = False
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self._psave_enable = False
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if self._use_pio:
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from kmk.transports.pio_uart import PIO_UART
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self.PIO_UART = PIO_UART
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if split_type == SplitType.UART and use_pio:
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split_type = SplitType.PIO_UART
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def during_bootup(self, keyboard):
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# Set up name for target side detection and BLE advertisment
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name = str(getmount('/').label)
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if self.split_type == SplitType.BLE:
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if keyboard.hid_type == HIDModes.BLE:
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self._ble = keyboard._hid_helper.ble
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else:
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self._ble = self.BLERadio()
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self._ble.name = name
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else:
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# Try to guess data pins if not supplied
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if not self.data_pin:
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self.data_pin = keyboard.data_pin
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if not self.data_pin:
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self.data_pin = keyboard.data_pin
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self._get_side()
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if not self._is_target:
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keyboard._hid_send_enabled = False
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if self.split_offset is None:
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self.split_offset = keyboard.matrix[-1].coord_mapping[-1] + 1
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self._init_transport(keyboard)
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# Attempt to sanely guess a coord_mapping if one is not provided.
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if not keyboard.coord_mapping:
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self._guess_coord_mapping()
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if self.split_side == SplitSide.RIGHT:
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offset = self.split_offset
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for matrix in keyboard.matrix:
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matrix.offset = offset
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offset += matrix.key_count
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def before_matrix_scan(self, keyboard):
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if self._can_receive(keyboard):
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keyboard.secondary_matrix_update = self._transport.receive(keyboard)
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def after_matrix_scan(self, keyboard):
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if keyboard.matrix_update:
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self._transport.write(keyboard, keyboard.matrix_update)
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def before_hid_send(self, keyboard):
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if not self._is_target:
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keyboard.hid_pending = False
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return
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def after_hid_send(self, keyboard):
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return
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def on_powersave_enable(self, keyboard):
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self._transport.powersave(True)
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def on_powersave_disable(self, keyboard):
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self._transport.powersave(False)
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def _serialize_update(self, update):
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buffer = bytearray(2)
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buffer[0] = update.key_number
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buffer[1] = update.pressed
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return buffer
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def _deserialize_update(self, update):
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kevent = KeyEvent(key_number=update[0], pressed=update[1])
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return kevent
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def _checksum(self, update):
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checksum = bytes([sum(update) & 0xFF])
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return checksum
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def _get_side(self):
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name = str(getmount('/').label)
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# if split side was given, find target from split_side.
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if self.split_side == SplitSide.LEFT:
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self._is_target = bool(self.split_target_left)
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@ -108,277 +133,69 @@ class Split(Module):
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or self.split_type == SplitType.ONEWIRE
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):
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self._is_target = runtime.usb_connected
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elif self.split_type == SplitType.BLE:
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self._is_target = name.endswith('L') == self.split_target_left
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if name.endswith('L'):
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self.split_side = SplitSide.LEFT
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elif name.endswith('R'):
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self.split_side = SplitSide.RIGHT
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if not self._is_target:
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keyboard._hid_send_enabled = False
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def _init_transport(self, keyboard):
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if self.split_type == SplitType.UART:
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from kmk.transports.uart import UART
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elif self.split_type == SplitType.PIO_UART:
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from kmk.transports.pio_uart import PIO_UART
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elif self.split_type == SplitType.BLE:
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from kmk.transports.ble import BLE_UART
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if self.split_offset is None:
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self.split_offset = keyboard.matrix[-1].coord_mapping[-1] + 1
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if self._is_target or not self.uart_flip:
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tx_pin = self.data_pin2
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rx_pin = self.data_pin
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else:
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tx_pin = self.data_pin
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rx_pin = self.data_pin2
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if self.split_type == SplitType.UART and self.data_pin is not None:
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if self._is_target or not self.uart_flip:
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if self._use_pio:
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self._uart = self.PIO_UART(tx=self.data_pin2, rx=self.data_pin)
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else:
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self._uart = busio.UART(
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tx=self.data_pin2, rx=self.data_pin, timeout=self._uart_interval
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)
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else:
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if self._use_pio:
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self._uart = self.PIO_UART(tx=self.data_pin, rx=self.data_pin2)
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else:
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self._uart = busio.UART(
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tx=self.data_pin, rx=self.data_pin2, timeout=self._uart_interval
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)
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if self.split_type == SplitType.UART:
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self._transport = UART(
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tx=tx_pin,
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rx=rx_pin,
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target=self.is_target,
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uart_interval=self._uart_interval,
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)
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elif self.split_type == SplitType.PIO_UART:
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self._transport = PIO_UART(tx=tx_pin, rx=rx_pin)
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elif self.split_type == SplitType.BLE:
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self._transport = BLE_UART(
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target=self._is_target, uart_interval=self.uart_interval
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)
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else:
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raise NotImplementedError
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# Attempt to sanely guess a coord_mapping if one is not provided.
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if not keyboard.coord_mapping:
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cm = []
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def _guess_coord_mapping(self, keyboard):
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cm = []
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rows_to_calc = len(keyboard.row_pins)
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cols_to_calc = len(keyboard.col_pins)
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rows_to_calc = len(keyboard.row_pins)
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cols_to_calc = len(keyboard.col_pins)
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# Flips the col order if PCB is the same but flipped on right
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cols_rhs = list(range(cols_to_calc))
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if self.split_flip:
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cols_rhs = list(reversed(cols_rhs))
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# Flips the col order if PCB is the same but flipped on right
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cols_rhs = list(range(cols_to_calc))
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if self.split_flip:
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cols_rhs = list(reversed(cols_rhs))
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for ridx in range(rows_to_calc):
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for cidx in range(cols_to_calc):
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cm.append(cols_to_calc * ridx + cidx)
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for cidx in cols_rhs:
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cm.append(cols_to_calc * (rows_to_calc + ridx) + cidx)
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for ridx in range(rows_to_calc):
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for cidx in range(cols_to_calc):
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cm.append(cols_to_calc * ridx + cidx)
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for cidx in cols_rhs:
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cm.append(cols_to_calc * (rows_to_calc + ridx) + cidx)
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keyboard.coord_mapping = tuple(cm)
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keyboard.coord_mapping = tuple(cm)
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if self.split_side == SplitSide.RIGHT:
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offset = self.split_offset
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for matrix in keyboard.matrix:
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matrix.offset = offset
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offset += matrix.key_count
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def before_matrix_scan(self, keyboard):
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def _can_receive(self, keyboard) -> bool:
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if self.split_type == SplitType.BLE:
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self._check_all_connections(keyboard)
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self._receive_ble(keyboard)
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elif self.split_type == SplitType.UART:
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if self._is_target or self.data_pin2:
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self._receive_uart(keyboard)
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elif self.split_type == SplitType.ONEWIRE:
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pass # Protocol needs written
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return
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def after_matrix_scan(self, keyboard):
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if keyboard.matrix_update:
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if self.split_type == SplitType.UART:
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if not self._is_target or self.data_pin2:
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self._send_uart(keyboard.matrix_update)
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else:
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pass # explicit pass just for dev sanity...
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elif self.split_type == SplitType.BLE:
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self._send_ble(keyboard.matrix_update)
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elif self.split_type == SplitType.ONEWIRE:
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pass # Protocol needs written
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else:
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print('Unexpected case in after_matrix_scan')
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return
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def before_hid_send(self, keyboard):
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if not self._is_target:
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keyboard.hid_pending = False
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return
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def after_hid_send(self, keyboard):
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return
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def on_powersave_enable(self, keyboard):
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if self.split_type == SplitType.BLE:
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if self._uart_connection and not self._psave_enable:
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self._uart_connection.connection_interval = self._uart_interval
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self._psave_enable = True
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def on_powersave_disable(self, keyboard):
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if self.split_type == SplitType.BLE:
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if self._uart_connection and self._psave_enable:
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self._uart_connection.connection_interval = 11.25
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self._psave_enable = False
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def _check_all_connections(self, keyboard):
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'''Validates the correct number of BLE connections'''
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self._previous_connection_count = self._connection_count
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self._connection_count = len(self._ble.connections)
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if self._is_target:
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if self._advertising or not self._check_if_split_connected():
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self._target_advertise()
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elif self._connection_count < 2 and keyboard.hid_type == HIDModes.BLE:
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keyboard._hid_helper.start_advertising()
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elif not self._is_target and self._connection_count < 1:
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self._initiator_scan()
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def _check_if_split_connected(self):
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# I'm looking for a way how to recognize which connection is on and which one off
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# For now, I found that service name relation to having other CP device
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if self._connection_count == 0:
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return False
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if self._connection_count == 2:
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self._split_connected = True
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self._transport.check_connection(keyboard)
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return True
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# Polling this takes some time so I check only if connection_count changed
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if self._previous_connection_count == self._connection_count:
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return self._split_connected
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bleio_connection = self._ble.connections[0]._bleio_connection
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connection_services = bleio_connection.discover_remote_services()
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for service in connection_services:
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if str(service.uuid).startswith("UUID('adaf0001"):
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self._split_connected = True
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elif self.split_type == SplitType.UART:
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if self._is_target or self.data_pin2:
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return True
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return False
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def _initiator_scan(self):
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'''Scans for target device'''
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self._uart = None
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self._uart_connection = None
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# See if any existing connections are providing UARTService.
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self._connection_count = len(self._ble.connections)
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if self._connection_count > 0 and not self._uart:
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for connection in self._ble.connections:
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if self.UARTService in connection:
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self._uart_connection = connection
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self._uart_connection.connection_interval = 11.25
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self._uart = self._uart_connection[self.UARTService]
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break
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if not self._uart:
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if self._debug_enabled:
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print('Scanning')
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self._ble.stop_scan()
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for adv in self._ble.start_scan(
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self.ProvideServicesAdvertisement, timeout=20
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):
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if self._debug_enabled:
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print('Scanning')
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if self.UARTService in adv.services and adv.rssi > -70:
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self._uart_connection = self._ble.connect(adv)
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self._uart_connection.connection_interval = 11.25
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self._uart = self._uart_connection[self.UARTService]
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self._ble.stop_scan()
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if self._debug_enabled:
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print('Scan complete')
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break
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self._ble.stop_scan()
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def _target_advertise(self):
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'''Advertises the target for the initiator to find'''
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# Give previous advertising some time to complete
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if self._advertising:
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if self._check_if_split_connected():
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if self._debug_enabled:
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print('Advertising complete')
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self._ble.stop_advertising()
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self._advertising = False
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return
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if not self.ble_rescan_timer():
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return
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if self._debug_enabled:
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print('Advertising not answered')
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self._ble.stop_advertising()
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if self._debug_enabled:
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print('Advertising')
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# Uart must not change on this connection if reconnecting
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if not self._uart:
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self._uart = self.UARTService()
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advertisement = self.ProvideServicesAdvertisement(self._uart)
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self._ble.start_advertising(advertisement)
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self._advertising = True
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self.ble_time_reset()
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def ble_rescan_timer(self):
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'''If true, the rescan timer is up'''
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return not bool(check_deadline(ticks_ms(), self._ble_last_scan, 5000))
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|
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def ble_time_reset(self):
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'''Resets the rescan timer'''
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self._ble_last_scan = ticks_ms()
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|
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def _serialize_update(self, update):
|
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buffer = bytearray(2)
|
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buffer[0] = update.key_number
|
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buffer[1] = update.pressed
|
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return buffer
|
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|
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def _deserialize_update(self, update):
|
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kevent = KeyEvent(key_number=update[0], pressed=update[1])
|
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return kevent
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|
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def _send_ble(self, update):
|
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if self._uart:
|
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try:
|
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self._uart.write(self._serialize_update(update))
|
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except OSError:
|
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try:
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self._uart.disconnect()
|
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except: # noqa: E722
|
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if self._debug_enabled:
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print('UART disconnect failed')
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|
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if self._debug_enabled:
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print('Connection error')
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self._uart_connection = None
|
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self._uart = None
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|
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def _receive_ble(self, keyboard):
|
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if self._uart is not None and self._uart.in_waiting > 0 or self._uart_buffer:
|
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while self._uart.in_waiting >= 2:
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update = self._deserialize_update(self._uart.read(2))
|
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self._uart_buffer.append(update)
|
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if self._uart_buffer:
|
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keyboard.secondary_matrix_update = self._uart_buffer.pop(0)
|
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|
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def _checksum(self, update):
|
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checksum = bytes([sum(update) & 0xFF])
|
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|
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return checksum
|
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|
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def _send_uart(self, update):
|
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# Change offsets depending on where the data is going to match the correct
|
||||
# matrix location of the receiever
|
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if self._uart is not None:
|
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update = self._serialize_update(update)
|
||||
self._uart.write(self.uart_header)
|
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self._uart.write(update)
|
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self._uart.write(self._checksum(update))
|
||||
|
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def _receive_uart(self, keyboard):
|
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if self._uart is not None and self._uart.in_waiting > 0 or self._uart_buffer:
|
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if self._uart.in_waiting >= 60:
|
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# This is a dirty hack to prevent crashes in unrealistic cases
|
||||
import microcontroller
|
||||
|
||||
microcontroller.reset()
|
||||
|
||||
while self._uart.in_waiting >= 4:
|
||||
# Check the header
|
||||
if self._uart.read(1) == self.uart_header:
|
||||
update = self._uart.read(2)
|
||||
|
||||
# check the checksum
|
||||
if self._checksum(update) == self._uart.read(1):
|
||||
self._uart_buffer.append(self._deserialize_update(update))
|
||||
if self._uart_buffer:
|
||||
keyboard.secondary_matrix_update = self._uart_buffer.pop(0)
|
||||
|
||||
181
kmk/transports/ble.py
Normal file
181
kmk/transports/ble.py
Normal file
@ -0,0 +1,181 @@
|
||||
from supervisor import ticks_ms
|
||||
|
||||
from kmk.hid import HIDModes
|
||||
from kmk.kmktime import check_deadline
|
||||
|
||||
|
||||
class BLE_UART:
|
||||
def __init__(self, is_target=True, uart_interval=20):
|
||||
try:
|
||||
from adafruit_ble import BLERadio
|
||||
from adafruit_ble.advertising.standard import ProvideServicesAdvertisement
|
||||
from adafruit_ble.services.nordic import UARTService
|
||||
|
||||
self.BLERadio = BLERadio
|
||||
self.ProvideServicesAdvertisement = ProvideServicesAdvertisement
|
||||
self.UARTService = UARTService
|
||||
except ImportError:
|
||||
print('BLE Import error')
|
||||
return # BLE isn't supported on this platform
|
||||
|
||||
self._debug_enabled = True
|
||||
self._ble_last_scan = ticks_ms() - 5000
|
||||
self._connection_count = 0
|
||||
self._split_connected = False
|
||||
self._uart_connection = None
|
||||
self._advertisment = None # Seems to not be used anywhere
|
||||
self._advertising = False
|
||||
self._psave_enabled = False
|
||||
self._uart = None
|
||||
self._uart_interval = uart_interval
|
||||
self._is_target = is_target
|
||||
|
||||
@property
|
||||
def in_waiting(self):
|
||||
return self._uart.in_waiting
|
||||
|
||||
def read(self, n):
|
||||
return self._uart.read(n)
|
||||
|
||||
def readinto(self, buf):
|
||||
return self._uart.readinto(buf)
|
||||
|
||||
def write(self, buffer):
|
||||
try:
|
||||
self._uart.write(buffer)
|
||||
except OSError:
|
||||
try:
|
||||
self._uart.disconnect()
|
||||
except: # noqa: E722
|
||||
if self._debug_enabled:
|
||||
print('UART disconnect failed')
|
||||
|
||||
if self._debug_enabled:
|
||||
print('Connection error')
|
||||
self._uart_connection = None
|
||||
self._uart = None
|
||||
|
||||
def check_connection(self, keyboard):
|
||||
self._check_all_connections(keyboard)
|
||||
|
||||
def powersave(self, enable=True):
|
||||
if enable:
|
||||
if self._uart_connection and not self._psave_enable:
|
||||
self._uart_connection.connection_interval = self._uart_interval
|
||||
self._psave_enabled = True
|
||||
else:
|
||||
if self._uart_connection and self._psave_enable:
|
||||
self._uart_connection.connection_interval = 11.25
|
||||
self._psave_enable = False
|
||||
|
||||
def _check_all_connections(self, keyboard):
|
||||
'''Validates the correct number of BLE connections'''
|
||||
self._previous_connection_count = self._connection_count
|
||||
self._connection_count = len(self._ble.connections)
|
||||
if self._is_target:
|
||||
if self._advertising or not self._check_if_split_connected():
|
||||
self._target_advertise()
|
||||
elif self._connection_count < 2 and keyboard.hid_type == HIDModes.BLE:
|
||||
keyboard._hid_helper.start_advertising()
|
||||
|
||||
elif not self._is_target and self._connection_count < 1:
|
||||
self._initiator_scan()
|
||||
|
||||
def _check_if_split_connected(self):
|
||||
# I'm looking for a way how to recognize which connection is on and which one off
|
||||
# For now, I found that service name relation to having other CP device
|
||||
if self._connection_count == 0:
|
||||
return False
|
||||
if self._connection_count == 2:
|
||||
self._split_connected = True
|
||||
return True
|
||||
|
||||
# Polling this takes some time so I check only if connection_count changed
|
||||
if self._previous_connection_count == self._connection_count:
|
||||
return self._split_connected
|
||||
|
||||
bleio_connection = self._ble.connections[0]._bleio_connection
|
||||
connection_services = bleio_connection.discover_remote_services()
|
||||
for service in connection_services:
|
||||
if str(service.uuid).startswith("UUID('adaf0001"):
|
||||
self._split_connected = True
|
||||
return True
|
||||
return False
|
||||
|
||||
def _initiator_scan(self):
|
||||
'''Scans for target device'''
|
||||
self._uart = None
|
||||
self._uart_connection = None
|
||||
# See if any existing connections are providing UARTService.
|
||||
self._connection_count = len(self._ble.connections)
|
||||
if self._connection_count > 0 and not self._uart:
|
||||
for connection in self._ble.connections:
|
||||
if self.UARTService in connection:
|
||||
self._uart_connection = connection
|
||||
self._uart_connection.connection_interval = 11.25
|
||||
self._uart = self._uart_connection[self.UARTService]
|
||||
break
|
||||
|
||||
if not self._uart:
|
||||
if self._debug_enabled:
|
||||
print('Scanning')
|
||||
self._ble.stop_scan()
|
||||
for adv in self._ble.start_scan(
|
||||
self.ProvideServicesAdvertisement, timeout=20
|
||||
):
|
||||
if self._debug_enabled:
|
||||
print('Scanning')
|
||||
if self.UARTService in adv.services and adv.rssi > -70:
|
||||
self._uart_connection = self._ble.connect(adv)
|
||||
self._uart_connection.connection_interval = 11.25
|
||||
self._uart = self._uart_connection[self.UARTService]
|
||||
self._ble.stop_scan()
|
||||
if self._debug_enabled:
|
||||
print('Scan complete')
|
||||
break
|
||||
self._ble.stop_scan()
|
||||
|
||||
def _target_advertise(self):
|
||||
'''Advertises the target for the initiator to find'''
|
||||
# Give previous advertising some time to complete
|
||||
if self._advertising:
|
||||
if self._check_if_split_connected():
|
||||
if self._debug_enabled:
|
||||
print('Advertising complete')
|
||||
self._ble.stop_advertising()
|
||||
self._advertising = False
|
||||
return
|
||||
|
||||
if not self.ble_rescan_timer():
|
||||
return
|
||||
|
||||
if self._debug_enabled:
|
||||
print('Advertising not answered')
|
||||
|
||||
self._ble.stop_advertising()
|
||||
if self._debug_enabled:
|
||||
print('Advertising')
|
||||
# Uart must not change on this connection if reconnecting
|
||||
if not self._uart:
|
||||
self._uart = self.UARTService()
|
||||
advertisement = self.ProvideServicesAdvertisement(self._uart)
|
||||
|
||||
self._ble.start_advertising(advertisement)
|
||||
self._advertising = True
|
||||
self.ble_time_reset()
|
||||
|
||||
def ble_rescan_timer(self):
|
||||
'''If true, the rescan timer is up'''
|
||||
return not bool(check_deadline(ticks_ms(), self._ble_last_scan, 5000))
|
||||
|
||||
def ble_time_reset(self):
|
||||
'''Resets the rescan timer'''
|
||||
self._ble_last_scan = ticks_ms()
|
||||
|
||||
def receive(self, keyboard):
|
||||
if self._uart is not None and self._uart.in_waiting > 0 or self._uart_buffer:
|
||||
while self._uart.in_waiting >= 2:
|
||||
update = self._deserialize_update(self._uart.read(2))
|
||||
self._uart_buffer.append(update)
|
||||
if self._uart_buffer:
|
||||
keyboard.secondary_matrix_update = self._uart_buffer.pop(0)
|
||||
51
kmk/transports/uart.py
Normal file
51
kmk/transports/uart.py
Normal file
@ -0,0 +1,51 @@
|
||||
class UART:
|
||||
def __init__(self, tx=None, rx=None, is_target=True, uart_interval=20):
|
||||
self._debug_enabled = True
|
||||
self._uart_connection = None
|
||||
self._uart = None
|
||||
self._uart_interval = uart_interval
|
||||
self._is_target = is_target
|
||||
|
||||
@property
|
||||
def in_waiting(self):
|
||||
return self._uart.in_waiting
|
||||
|
||||
def read(self, n):
|
||||
return self._uart.read(n)
|
||||
|
||||
def readinto(self, buf):
|
||||
return self._uart.readinto(buf)
|
||||
|
||||
def powersave(enable: bool):
|
||||
return
|
||||
|
||||
def write(self, buffer, update):
|
||||
if self._uart is not None:
|
||||
if not self._is_target or self.data_pin2:
|
||||
update = self._serialize_update(update)
|
||||
self._uart.write(self.uart_header)
|
||||
self._uart.write(update)
|
||||
self._uart.write(self._checksum(update))
|
||||
|
||||
def receive(self, keyboard):
|
||||
if self._transport.in_waiting > 0 or self._uart_buffer:
|
||||
if self._transport.in_waiting >= 60:
|
||||
# This is a dirty hack to prevent crashes in unrealistic cases
|
||||
# TODO See if this hack is needed with checksum, and if not, use
|
||||
# that to fix it.
|
||||
import microcontroller
|
||||
|
||||
microcontroller.reset()
|
||||
|
||||
while self._transport.in_waiting >= 4:
|
||||
# Check the header
|
||||
if self._transport.read(1) == self.uart_header:
|
||||
update = self._transport.read(2)
|
||||
|
||||
# check the checksum
|
||||
if self._checksum(update) == self._transport.read(1):
|
||||
self._uart_buffer.append(self._deserialize_update(update))
|
||||
if self._uart_buffer:
|
||||
return self._uart_buffer.pop(0)
|
||||
|
||||
return None
|
||||
Loading…
Reference in New Issue
Block a user