Commit ba1c2cdb authored by Emil Obalski's avatar Emil Obalski Committed by Carles Cufi
Browse files

doc: releases: 2.4: Add USB detailed changes. 



Add a entry to 2.4 release notes about a need to explicitly
call usb_enable() for applications that configures specific
features.

Signed-off-by: default avatarEmil Obalski <emil.obalski@nordicsemi.no>
parent c6f7d871

doc/releases/release-notes-2.4.rst

+15 −0
Original line number Diff line number Diff line
@@ -267,6 +267,18 @@ Drivers and Sensors 


* USB



  * The usb_enable() function, which, for some samples, was invoked

    automatically on system boot up, now needs to be explicitly called

    by the application in order to enable the USB subsystem. If your

    application relies on any of the following Kconfig options, then

    it shall also enable the USB subsystem:



    * :option:`CONFIG_OPENTHREAD_NCP_SPINEL_ON_UART_ACM`

    * :option:`CONFIG_USB_DEVICE_NETWORK_ECM`

    * :option:`CONFIG_USB_DEVICE_NETWORK_EEM`

    * :option:`CONFIG_USB_DEVICE_NETWORK_RNDIS`

    * :option:`CONFIG_TRACING_BACKEND_USB`

    * :option:`CONFIG_USB_UART_CONSOLE`



* Video
@@ -356,6 +368,9 @@ Libraries / Subsystems 
    library footprint when some options are not enabled, so you should wait for

    future releases if higher ROM usage is a concern for your application.



* Tracing:

  * Tracing backed API now checks if init function exists prio to calling it.



HALs

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