Description
Lock class transmit.
Files
usbd_hid_os.h/usbd_hid_os.c
Prototype
Arguments
class_nbr
Class instance number.
p_err
Pointer to variable that will receive the return error code from this function.
USBD_ERR_NONE: OS error code(s) relevant to failure(s).
Callers
HID Class.
Implementation Guidelines
The lock operation typically consists in pending on a semaphore. If the semaphore is free, the task continues normally its execution, otherwise it waits until another task releases the semaphore. p_err argument should be assigned as described in .