Typing fixes

shared-bindings/synthio/LFO.c

@@ -62,7 +62,7 @@ STATIC const uint16_t triangle[] = {0, 32767, 0, -32767};
 //|
 //|     def __init__(
 //|         self,
-//|         waveform: ReadableBuffer = None,
+//|         waveform: ReadableBuffer,
 //|         *,
 //|         rate: BlockInput = 1.0,
 //|         scale: BlockInput = 1.0,

shared-bindings/synthio/Note.c

@@ -65,7 +65,7 @@ static const mp_arg_t note_properties[] = {
 //|         filter: Optional[Biquad] = None,
 //|         ring_frequency: float = 0.0,
 //|         ring_bend: float = 0.0,
-//|         ring_waveform: Optional[ReadableBuffer] = 0.0,
+//|         ring_waveform: Optional[ReadableBuffer] = None,
 //|         ring_waveform_loop_start: int = 0,
 //|         ring_waveform_loop_end: int = waveform_max_length,
 //|     ) -> None:

tools/test-stubs.sh

@@ -2,10 +2,11 @@
 rm -rf test-stubs
 python3 -m venv test-stubs
 . test-stubs/bin/activate
-pip install mypy isort black adafruit-circuitpython-typing wheel build
+pip install mypy isort black pip install adafruit-circuitpython-typing@git+https://github.com/justmobilize/Adafruit_CircuitPython_Typing@typing-fixes wheel build
 rm -rf circuitpython-stubs .mypy_cache
 make stubs
 pip install --force-reinstall circuitpython-stubs/dist/circuitpython-stubs-*.tar.gz
+export MYPYPATH=circuitpython-stubs/
 mypy -c 'import busio; b: busio.I2C; b.writeto(0x30, b"")'
 ! mypy -c 'import busio; b: busio.I2C; b.readfrom_into(0x30, b"")'
 ! mypy -c 'import busio; b: busio.I2C; b.write(0x30, b"")'