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Use 20MHz, not 24MHz, master clock #3

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Merged
merged 1 commit into from
Oct 8, 2021
Merged

Use 20MHz, not 24MHz, master clock #3

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1 change: 0 additions & 1 deletion README.rst
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Original file line number Diff line number Diff line change
Expand Up @@ -87,7 +87,6 @@ Usage Example
vsync=board.CAMERA_VSYNC,
href=board.CAMERA_HREF,
mclk=board.CAMERA_XCLK,
mclk_frequency=24_000_000,
size=adafruit_ov5640.OV5640_SIZE_QQVGA,
)
print("print chip id")
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8 changes: 6 additions & 2 deletions adafruit_ov5640.py
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Expand Up @@ -818,7 +818,7 @@ def __init__(
shutdown=None,
reset=None,
mclk=None,
mclk_frequency=24_000_000,
mclk_frequency=20_000_000,
i2c_address=0x3C,
size=OV5640_SIZE_QQVGA,
): # pylint: disable=too-many-arguments
Expand All @@ -838,7 +838,11 @@ def __init__(
master clock signal, or None if the master clock signal is
already being generated.
mclk_frequency (int): The frequency of the master clock to generate, \
ignored if mclk is None, requred if it is specified
ignored if mclk is None, requred if it is specified.
Note that the OV5640 requires a very low jitter clock,
so only specific (microcontroller-dependent) values may
work reliably. On the ESP32-S2, a 20MHz clock can be generated
with sufficiently low jitter.
i2c_address (int): The I2C address of the camera.
"""

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1 change: 0 additions & 1 deletion examples/ov5640_directio_kaluga1_3_ili9341.py
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Expand Up @@ -74,7 +74,6 @@
vsync=board.CAMERA_VSYNC,
href=board.CAMERA_HREF,
mclk=board.CAMERA_XCLK,
mclk_frequency=24_000_000,
size=adafruit_ov5640.OV5640_SIZE_QVGA,
)

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1 change: 0 additions & 1 deletion examples/ov5640_sdcard_kaluga_1_3.py
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Expand Up @@ -46,7 +46,6 @@
vsync=board.CAMERA_VSYNC,
href=board.CAMERA_HREF,
mclk=board.CAMERA_XCLK,
mclk_frequency=24_000_000,
size=adafruit_ov5640.OV5640_SIZE_QSXGA,
)

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1 change: 0 additions & 1 deletion examples/ov5640_simpletest.py
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Original file line number Diff line number Diff line change
Expand Up @@ -38,7 +38,6 @@
vsync=board.CAMERA_VSYNC,
href=board.CAMERA_HREF,
mclk=board.CAMERA_XCLK,
mclk_frequency=24_000_000,
size=adafruit_ov5640.OV5640_SIZE_QQVGA,
)
print("print chip id")
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