Macropad RP2040 locks up using board.SPI()

[dgriswo]

CircuitPython version

Adafruit CircuitPython 7.0.0-alpha.3-471-g7f39779f4 on 2021-07-01; Adafruit Macropad RP2040 with rp2040

Code/REPL

import board
import displayio

from adafruit_displayio_sh1106 import SH1106

OLED_WIDTH = 128
OLED_HEIGHT = 64

displayio.release_displays()

display_bus = displayio.FourWire(
    board.SPI(),
    command=board.OLED_DC,
    chip_select=board.OLED_CS,
    reset=board.OLED_RESET,
    baudrate=1000000,
)

display = SH1106(display_bus, width=OLED_WIDTH, height=OLED_HEIGHT)

Behavior

When creating display_bus, the board locks. Serial stops responding and the CIRCUITPY drive becomes unavailable.

Description

No response

Additional information

Using busio, the display initializes as expected.

import board
import displayio
import busio

from adafruit_displayio_sh1106 import SH1106

OLED_WIDTH = 128
OLED_HEIGHT = 64

displayio.release_displays()
spi = busio.SPI(board.SCK, board.MOSI)
display_bus = displayio.FourWire(
    spi,
    command=board.OLED_DC,
    chip_select=board.OLED_CS,
    reset=board.OLED_RESET,
    baudrate=1000000,
)
display = SH1106(display_bus, width=OLED_WIDTH, height=OLED_HEIGHT)