Description
Return current control line state.
Files
usbd_acm_serial.h/usbd_acm_serial.c
Prototype
Arguments
subclass_nbr
CDC ACM serial emulation subclass instance number.
p_err
Pointer to variable that will receive the return error code from this function.
USBD_ERR_NONE
USBD_ERR_INVALID_ARG
Returned Value
Bit-field with the state of the control line.
Bit | Description |
|---|---|
USBD_ACM_SERIAL_CTRL_BREAK | Break signal is set. |
USBD_ACM_SERIAL_CTRL_RTS | RTS signal is set. |
USBD_ACM_SERIAL_CTRL_DTR | DTR signal is set. |
Callers
Application.
Notes / Warnings
None.