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Press CTRL -A Z for help on special Devices Yocto Distribution Open a new Minicom terminal and configure as below:Īnd you will get into the kernel of the target board via the USB Serial protocol: usb 1 -1.4.1.2 : Manufacturer : Linux 4.19.0 -yocto -standard with musb -hdrc usb 1 -1.4.1.2 : New USB device strings : Mfr = 1, Product = 2, SerialNumber = 0 usb 1 -1.4.1.2 : Product : Gadget Serial v2.4 Get the target board usb serial :~ # dmesg|tail usb 1 -1.4.1.2 : New USB device found, idVendor = 0525, idProduct =a4a7 G_serial gadget : full -speed config #2: CDC ACM -sc589 -ezkit :~ # setsid getty 9600 /dev/ttyGS0 G_serial gadget : full -speed config #2: CDC ACM config Then save the linux-kernel configuration and build the target images:Įz-Kit target board -sc589 -ezkit :~ # modprobe g_serial use_acm=1 Serial Gadget (with CDC ACM and CDC OBEX support)

MUSB Mode Selection (Gadget only mode) -> check the directory of “yocto/build” and Clean up and setup the linux-kernel configuration with commands:Īnd In the pop-up window of linux-kenel configuration, configure as follows On the Yocto, Configure the linux-kernel as below to set the USB controller in Gadget only mode, and enable the USB Mass Storage support.

Gadget serial v2 4 driver