148 lines
4.4 KiB
Python
148 lines
4.4 KiB
Python
# SPDX-FileCopyrightText: Copyright (c) 2023 Jeff Epler for Adafruit Industries
|
|
#
|
|
# SPDX-License-Identifier: Unlicense
|
|
|
|
"""
|
|
This demo is designed for the Kaluga development kit version 1.3 with the
|
|
ILI9341 display. It requires CircuitPython 8.
|
|
|
|
This demo needs reserved psram properly configured in settings.toml:
|
|
CIRCUITPY_RESERVED_PSRAM=1048576
|
|
|
|
This example also requires an SD card breakout wired as follows:
|
|
* IO18: SD Clock Input
|
|
* IO17: SD Serial Output (MISO)
|
|
* IO14: SD Serial Input (MOSI)
|
|
* IO12: SD Chip Select
|
|
|
|
Insert a CircuitPython-compatible SD card before powering on the Kaluga.
|
|
Press the "BOOT" button to take a photo in BMP format.
|
|
"""
|
|
|
|
import os
|
|
import struct
|
|
|
|
import board
|
|
import busio
|
|
import displayio
|
|
import busdisplay
|
|
import fourwire
|
|
import espcamera
|
|
import espidf
|
|
import keypad
|
|
import sdcardio
|
|
import storage
|
|
|
|
print("Initializing display")
|
|
displayio.release_displays()
|
|
spi = busio.SPI(MOSI=board.LCD_MOSI, clock=board.LCD_CLK)
|
|
display_bus = fourwire.FourWire(
|
|
spi,
|
|
command=board.LCD_D_C,
|
|
chip_select=board.LCD_CS,
|
|
reset=board.LCD_RST,
|
|
baudrate=80_000_000,
|
|
)
|
|
_INIT_SEQUENCE = (
|
|
b"\x01\x80\x80" # Software reset then delay 0x80 (128ms)
|
|
b"\xEF\x03\x03\x80\x02"
|
|
b"\xCF\x03\x00\xC1\x30"
|
|
b"\xED\x04\x64\x03\x12\x81"
|
|
b"\xE8\x03\x85\x00\x78"
|
|
b"\xCB\x05\x39\x2C\x00\x34\x02"
|
|
b"\xF7\x01\x20"
|
|
b"\xEA\x02\x00\x00"
|
|
b"\xc0\x01\x23" # Power control VRH[5:0]
|
|
b"\xc1\x01\x10" # Power control SAP[2:0];BT[3:0]
|
|
b"\xc5\x02\x3e\x28" # VCM control
|
|
b"\xc7\x01\x86" # VCM control2
|
|
b"\x36\x01\x40" # Memory Access Control
|
|
b"\x37\x01\x00" # Vertical scroll zero
|
|
b"\x3a\x01\x55" # COLMOD: Pixel Format Set
|
|
b"\xb1\x02\x00\x18" # Frame Rate Control (In Normal Mode/Full Colors)
|
|
b"\xb6\x03\x08\x82\x27" # Display Function Control
|
|
b"\xF2\x01\x00" # 3Gamma Function Disable
|
|
b"\x26\x01\x01" # Gamma curve selected
|
|
b"\xe0\x0f\x0F\x31\x2B\x0C\x0E\x08\x4E\xF1\x37\x07\x10\x03\x0E\x09\x00" # Set Gamma
|
|
b"\xe1\x0f\x00\x0E\x14\x03\x11\x07\x31\xC1\x48\x08\x0F\x0C\x31\x36\x0F" # Set Gamma
|
|
b"\x11\x80\x78" # Exit Sleep then delay 0x78 (120ms)
|
|
b"\x29\x80\x78" # Display on then delay 0x78 (120ms)
|
|
)
|
|
|
|
display = busdisplay.BusDisplay(display_bus, _INIT_SEQUENCE, width=320, height=240)
|
|
|
|
if espidf.get_reserved_psram() < 1047586:
|
|
print("""Place the following line in CIRCUITPY/settings.toml, then hard-reset the board:
|
|
CIRCUITPY_RESERVED_PSRAM=1048576
|
|
""")
|
|
raise SystemExit
|
|
|
|
print("Initializing SD card")
|
|
sd_spi = busio.SPI(clock=board.IO18, MOSI=board.IO14, MISO=board.IO17)
|
|
sd_cs = board.IO12
|
|
sdcard = sdcardio.SDCard(sd_spi, sd_cs)
|
|
vfs = storage.VfsFat(sdcard)
|
|
storage.mount(vfs, "/sd")
|
|
|
|
print("Initializing camera")
|
|
cam = espcamera.Camera(
|
|
data_pins=board.CAMERA_DATA,
|
|
external_clock_pin=board.CAMERA_XCLK,
|
|
pixel_clock_pin=board.CAMERA_PCLK,
|
|
vsync_pin=board.CAMERA_VSYNC,
|
|
href_pin=board.CAMERA_HREF,
|
|
pixel_format=espcamera.PixelFormat.RGB565,
|
|
frame_size=espcamera.FrameSize.QVGA,
|
|
i2c=board.I2C(),
|
|
external_clock_frequency=20_000_000,
|
|
framebuffer_count=1)
|
|
print("initialized")
|
|
display.auto_refresh = False
|
|
|
|
def exists(filename):
|
|
try:
|
|
os.stat(filename)
|
|
return True
|
|
except OSError:
|
|
return False
|
|
|
|
|
|
_image_counter = 0
|
|
|
|
|
|
def open_next_image(extension="jpg"):
|
|
global _image_counter # pylint: disable=global-statement
|
|
while True:
|
|
filename = f"/sd/img{_image_counter:04d}.{extension}"
|
|
_image_counter += 1
|
|
if exists(filename):
|
|
continue
|
|
print("#", filename)
|
|
return open(filename, "wb")
|
|
|
|
ow = (display.width - cam.width) // 2
|
|
oh = (display.height - cam.height) // 2
|
|
|
|
k = keypad.Keys([board.IO0], value_when_pressed=False)
|
|
|
|
while True:
|
|
frame = cam.take(1)
|
|
display_bus.send(42, struct.pack(">hh", ow, cam.width + ow - 1))
|
|
display_bus.send(43, struct.pack(">hh", oh, cam.height + ow - 1))
|
|
display_bus.send(44, frame)
|
|
if (e := k.events.get()) is not None and e.pressed:
|
|
cam.reconfigure(
|
|
pixel_format=espcamera.PixelFormat.JPEG,
|
|
frame_size=espcamera.FrameSize.SVGA,
|
|
)
|
|
frame = cam.take(1)
|
|
if isinstance(frame, memoryview):
|
|
jpeg = frame
|
|
print(f"Captured {len(jpeg)} bytes of jpeg data")
|
|
|
|
with open_next_image() as f:
|
|
f.write(jpeg)
|
|
cam.reconfigure(
|
|
pixel_format=espcamera.PixelFormat.RGB565,
|
|
frame_size=espcamera.FrameSize.QVGA,
|
|
)
|