Make UARTService characteristics be at least as large as max MTU-3

.pre-commit-config.yaml

@@ -18,7 +18,7 @@ repos:
       - id: end-of-file-fixer
       - id: trailing-whitespace
   - repo: https://github.com/pycqa/pylint
-    rev: v2.17.4
+    rev: v3.3.1
     hooks:
       - id: pylint
         name: pylint (library code)

adafruit_ble/__init__.py

@@ -12,7 +12,7 @@
 
 from __future__ import annotations
 
-# pylint: disable=wrong-import-position
+# pylint: disable=wrong-import-position,too-many-arguments
 
 import sys
 

adafruit_ble/characteristics/__init__.py

@@ -10,6 +10,8 @@
 
 from __future__ import annotations
 
+# pylint: disable=too-many-arguments
+
 import struct
 import _bleio
 

adafruit_ble/characteristics/float.py

@@ -12,6 +12,8 @@
 
 from __future__ import annotations
 
+# pylint: disable=too-many-arguments
+
 from . import Attribute
 from . import StructCharacteristic
 

adafruit_ble/characteristics/int.py

@@ -12,6 +12,8 @@
 
 from __future__ import annotations
 
+# pylint: disable=too-many-arguments
+
 from . import Attribute
 from . import StructCharacteristic
 

adafruit_ble/characteristics/json.py

@@ -12,6 +12,8 @@
 
 from __future__ import annotations
 
+# pylint: disable=too-many-arguments
+
 import json
 from . import Attribute
 from . import Characteristic

adafruit_ble/characteristics/stream.py

@@ -13,6 +13,8 @@
 
 from __future__ import annotations
 
+# pylint: disable=too-many-arguments
+
 import _bleio
 
 from . import Attribute
@@ -66,7 +68,11 @@ def __init__(
         self._timeout = timeout
         self._buffer_size = buffer_size
         super().__init__(
-            uuid=uuid, properties=properties, read_perm=read_perm, write_perm=write_perm
+            uuid=uuid,
+            properties=properties,
+            read_perm=read_perm,
+            write_perm=write_perm,
+            max_length=buffer_size,
         )
 
     def bind(
@@ -104,6 +110,7 @@ def __init__(
             properties=properties,
             read_perm=Attribute.NO_ACCESS,
             write_perm=write_perm,
+            max_length=buffer_size,
         )
 
     def bind(

adafruit_ble/characteristics/string.py

@@ -12,6 +12,8 @@
 
 from __future__ import annotations
 
+# pylint: disable=too-many-arguments
+
 from . import Attribute
 from . import Characteristic
 

adafruit_ble/services/nordic.py

@@ -43,12 +43,14 @@ class UARTService(Service):
     _server_tx = StreamOut(
         uuid=VendorUUID("6E400003-B5A3-F393-E0A9-E50E24DCCA9E"),
         timeout=1.0,
-        buffer_size=64,
+        # 512 is the largest negotiated MTU-3 value for all CircuitPython ports.
+        buffer_size=512,
     )
     _server_rx = StreamIn(
         uuid=VendorUUID("6E400002-B5A3-F393-E0A9-E50E24DCCA9E"),
         timeout=1.0,
-        buffer_size=64,
+        # 512 is the largest negotiated MTU-3 value for all CircuitPython ports.
+        buffer_size=512,
     )
 
     def __init__(self, service: Optional[_bleio.Service] = None) -> None:

adafruit_ble/services/standard/device_info.py

@@ -46,7 +46,7 @@ class DeviceInfoService(Service):
     manufacturer = FixedStringCharacteristic(uuid=StandardUUID(0x2A29))
     pnp_id = StructCharacteristic("<BHHH", uuid=StandardUUID(0x2A50))
 
-    def __init__(
+    def __init__(  # pylint: disable=too-many-arguments
         self,
         *,
         manufacturer: Optional[str] = None,

adafruit_ble/services/standard/hid.py

@@ -14,6 +14,8 @@
 
 from __future__ import annotations
 
+# pylint: disable=too-many-arguments
+
 import struct
 
 from micropython import const

examples/ble_packet_buffer_service.py

@@ -30,7 +30,7 @@ def __init__(self, uuid16):
 
 
 class PacketBufferCharacteristic(ComplexCharacteristic):
-    def __init__(
+    def __init__(  # pylint: disable=too-many-arguments
         self,
         *,
         uuid=None,