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Thomas Farstrike
130 lines
3.9 KiB
Python
130 lines
3.9 KiB
Python
#define PWDN_GPIO_NUM 17 //power down is not used
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#define RESET_GPIO_NUM -1 //software reset will be performed
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#define XCLK_GPIO_NUM 8
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#define SIOD_GPIO_NUM 21
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#define SIOC_GPIO_NUM 16
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#define Y9_GPIO_NUM 2
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#define Y8_GPIO_NUM 7
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#define Y7_GPIO_NUM 10
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#define Y6_GPIO_NUM 14
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#define Y5_GPIO_NUM 11
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#define Y4_GPIO_NUM 15
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#define Y3_GPIO_NUM 13
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#define Y2_GPIO_NUM 12
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#define VSYNC_GPIO_NUM 6
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#define HREF_GPIO_NUM 4
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#define PCLK_GPIO_NUM 9
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#define CAM_LEDC_TIMER LEDC_TIMER_1
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#define CAM_LEDC_CHANNEL LEDC_CHANNEL_0
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# OV5640 I2C address
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#sensor_addr = 0x3C
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#reg_addr = 0x4300
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#reg_value = 0x4F # RGB565 (bit[6]=1) + sequence 0xF (bits[3:0]=0xF)
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#from machine import I2C, Pin
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#i2c = I2C(scl=Pin(16), sda=Pin(21))
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#i2c.readfrom_mem(0x3C, 0x4300, 1)
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#i2c.writeto_mem(sensor_addr, reg_addr, bytes([reg_value]))
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subwindow.clean()
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canary = lv.obj(subwindow)
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canary.add_flag(lv.obj.FLAG.HIDDEN)
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#width = 480
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#height = 320
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#width = 320
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#height = 240
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#width = 120
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#height = 160
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width = 240
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height = 240
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subwindow.set_scrollbar_mode(lv.SCROLLBAR_MODE.OFF)
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image = lv.image(subwindow)
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image.align(lv.ALIGN.LEFT_MID, 0, 0)
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#image.set_size(width, height)
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#image.set_size(height, width)
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image.set_rotation(900)
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from camera import Camera, GrabMode, PixelFormat, FrameSize, GainCeiling
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cam = Camera(
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data_pins=[12,13,15,11,14,10,7,2],
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vsync_pin=6,
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href_pin=4,
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sda_pin=21,
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scl_pin=16,
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pclk_pin=9,
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xclk_pin=8,
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xclk_freq=20000000,
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powerdown_pin=-1,
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reset_pin=-1,
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pixel_format=PixelFormat.RGB565,
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frame_size=FrameSize.R240X240,
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grab_mode=GrabMode.LATEST
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)
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#cam.reconfigure(frame_size=FrameSize.HVGA)
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# R240X240
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#frame_size=FrameSize.HVGA, # 480x320
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#frame_size=FrameSize.QVGA, # 320x240
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#frame_size=FrameSize.QQVGA # 160x120
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#cam.init() done default (see above)
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cam.set_vflip(True)
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# LVGL’s expected RGB565 format is likely little-endian: GGGBBBBB RRRRRGGG, since swapping bytes fixed the issue.
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# The sensor’s default sequence is 0x0 ({b[4:0],g[5:3]},{g[2:0],r[4:0]}), which is big-endian-like (BGR in the first byte, RG in the second).
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# After swapping bytes, you get {g[2:0],r[4:0]},{b[4:0],g[5:3]}, which matches LVGL’s expectation.
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# From the datasheet, the sequence {g[2:0],r[4:0]},{b[4:0],g[5:3]} corresponds to 0xF.
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# This suggests setting bits[3:0] to 0xF should produce the correct order without manual swapping.
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# default writes:
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# 0x1: {r[4:0],g[5:3]},{g[2:0],b[4:0]} so that's RRRRR GGGGGG BBBBB
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def try_capture():
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if cam.frame_available():
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img = bytes(cam.capture())
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cam.free_buffer()
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# Swap bytes for each 16-bit pixel
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# This is no longer needed because the esp-camera driver does {FORMAT_CTRL00, 0x6F}, // RGB565 (RGB) instead of {FORMAT_CTRL00, 0x61}, // RGB565 (BGR) now
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#img_swapped = bytearray(len(img))
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#for i in range(0, len(img), 2):
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# img_swapped[i] = img[i+1] # Swap high and low bytes
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# img_swapped[i+1] = img[i]
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image_dsc = lv.image_dsc_t({
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"header": { "magic": lv.IMAGE_HEADER_MAGIC, "w": width, "h": height, "stride": width * 2, "cf": lv.COLOR_FORMAT.RGB565 },
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'data_size': len(img),
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'data': img
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})
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image.set_src(image_dsc)
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try_capture()
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import time
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try:
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while canary.is_valid():
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try_capture()
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time.sleep_ms(100) # Allow for the MicroPython REPL to still work
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except lv.LvReferenceError: # triggers when the canary dies
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print("Canary died, deinitializing camera...")
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cam.deinit()
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#pixel_format=PixelFormat.JPEG,frame_size=FrameSize.QVGA,grab_mode=GrabMode.LATEST
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#cam.reconfigure(pixel_format=PixelFormat.RAW,frame_size=FrameSize.QVGA,grab_mode=GrabMode.LATEST, fb_count=2)
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#cam.reconfigure(pixel_format=PixelFormat.YUV420,frame_size=FrameSize.QQVGA,grab_mode=GrabMode.LATEST, fb_count=2)
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#cam.reconfigure(pixel_format=PixelFormat.RGB565,frame_size=FrameSize.QQVGA,grab_mode=GrabMode.LATEST, fb_count=2)
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#memoryview_to_hex_spaced(img)
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