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Cam works in color but not YUV

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This commit is contained in:
Thomas Farstrike
2025-05-14 16:20:38 +02:00
parent cb2376e538
commit e7670f885b
1 changed files with 18 additions and 10 deletions
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internal_filesystem/apps/com.example.camtestnew/assets/camtestcolor.py
+18 -10
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@@ -11,7 +11,7 @@ height=240
import time
th.disable()
#th.disable()
from camera import Camera, GrabMode, PixelFormat, FrameSize, GainCeiling
@@ -26,10 +26,10 @@ cam = Camera(
xclk_freq=20000000,
powerdown_pin=-1,
reset_pin=-1,
#pixel_format=PixelFormat.RGB565,
pixel_format=PixelFormat.RGB565,
#pixel_format=PixelFormat.GRAYSCALE,
#pixel_format=PixelFormat.YUV420,
pixel_format=PixelFormat.YUV422, # works
#pixel_format=PixelFormat.YUV422, # works
frame_size=FrameSize.R240X240,
grab_mode=GrabMode.LATEST
)
@@ -38,7 +38,7 @@ cam = Camera(
image = lv.image(lv.screen_active())
image.align(lv.ALIGN.LEFT_MID, 0, 0)
image.set_rotation(900)
#image.set_rotation(900)
# Create image descriptor once
image_dsc = lv.image_dsc_t({
@@ -46,10 +46,18 @@ image_dsc = lv.image_dsc_t({
"magic": lv.IMAGE_HEADER_MAGIC,
"w": width,
"h": height,
"stride": width,
"cf": lv.COLOR_FORMAT.I422
"stride": width *2,
#"cf": lv.COLOR_FORMAT.L8 # works
"cf": lv.COLOR_FORMAT.RGB565 # works
#"cf": lv.COLOR_FORMAT.I422 #doesnt show anything
#"cf": lv.COLOR_FORMAT.I420 #doesnt show anything
#"cf": lv.COLOR_FORMAT.I420
#"cf": lv.COLOR_FORMAT.YUY2
#"cf": lv.COLOR_FORMAT.UYVY
#"cf": lv.COLOR_FORMAT.NV12
},
'data_size': width * height,
'data_size': width * height * 2 ,
#'data_size': 86400,
'data': None # Will be updated per frame
})
image.set_src(image_dsc)
@@ -61,13 +69,13 @@ for i in range(100):
image_dsc.data = cam.capture() # Returns memoryview
image.set_src(image_dsc)
#image.invalidate()
lv.task_handler()
#lv.task_handler()
time.sleep_ms(5) # seems to need more than 0 or 1 ms, otherwise there's almost never a new image...
lv.tick_inc(5)
#lv.tick_inc(5)
print("cleanup")
cam.deinit()
th.enable()
#th.enable()