What changes have been made to the E-Port compared to the Onboard SDK port?
E-Port is a new-generation expansion port of DJI Enterprise drones.
E-Port has the same pin definition as the Onboard SDK port, but the USB link requires that the third-party payload be used as a secondary device (opposite to the Onboard SDK port).
In terms of software, E-Port only supports Payload SDK V3 or later versions, and is not compatible with Onboard SDK.
Sources
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