Circuitpython 9.1.1 and 9.2.0 Alpha Firmwares

Running on Seeed Xiao ESP32 S3 Sense with correct pin names and espcamera support.

Seeed Studio need to fill USB_VID and USB_PID list here: https://github.com/espressif/usb-pids

The example bellow is running on Seeed Xiao Round Display and shows the camera frame at 8 to 24 fps. Very good.

import board, busio
import displayio
import espcamera
import adafruit_ticks
import gc9a01
import struct

i2c = busio.I2C(board.SCL, board.SDA)
spi = busio.SPI(clock=board.SCK, MOSI=board.MOSI)
cam_i2c = busio.I2C(board.CAM_SCL, board.CAM_SDA)

tft_dc  = board.D3
tft_cs  = board.D1
tft_bl  = board.D6

display_bus = displayio.FourWire(spi, command=tft_dc, chip_select=tft_cs)
display = gc9a01.GC9A01(display_bus, width=240, height=240, rotation=0)

# Appears that this example does not use Displayio at all
# print frame directly on display_bus to be faster
# so, rotation setting not works...

main = displayio.Group()
display.root_group = main

# Camera Init
cam = espcamera.Camera(
    data_pins=board.CAM_DATA,
    external_clock_pin=board.CAM_XCLK,
    pixel_clock_pin=board.CAM_PCLK,
    vsync_pin=board.CAM_VSYNC,
    href_pin=board.CAM_HREF,
    pixel_format=espcamera.PixelFormat.RGB565,
    frame_size=espcamera.FrameSize.R240X240,
    i2c=cam_i2c,
    external_clock_frequency=20_000_000,
    framebuffer_count=2,
    grab_mode=espcamera.GrabMode.WHEN_EMPTY)

# Sending init bytes to display_bus
display_bus.send(36, struct.pack(">hh", 0, 239))
display_bus.send(42, struct.pack(">hh", 0, 239))
display_bus.send(43, struct.pack(">hh", 0, 80+239))
display.auto_refresh = False

t0 = adafruit_ticks.ticks_ms()

while True:
    frame = cam.take(1)                                                         
    if isinstance(frame, displayio.Bitmap):                                     
        display_bus.send(44, frame)                                             
        t1 = adafruit_ticks.ticks_ms()                                          
        fps = 1000 / adafruit_ticks.ticks_diff(t1, t0)
        print(f"{fps:3.1f}fps")  # typically runs at about 25fps
        t0 = t1