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usb_host_install
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I (750) example: Waiting for USB stick to be connected
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usb_host_install
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I (750) example: Waiting for USB stick to be connected
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ESP BOARD USB CONNECTOR (type A)
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[5V] ------> | || VCC
[GPIO19] ------> | || D-
[GPIO20] ------> | || D+
[G] ------> | || GND
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