Type Alias usbd_hw_ep_read 

pub type usbd_hw_ep_read = Option<unsafe extern "C" fn(ep: u8, buf: *mut c_void, blen: u16) -> i32>;

Reads data from OUT or control endpoint

Arguments

• ep - endpoint index, should belong to OUT or CONTROL endpoint.
• buf - pointer to read buffer
• blen - size of the read buffer in bytes

Returns

size of the actually received data, -1 on error.

Note: if data does not fit buffer it will be truncated

Aliased Type

pub enum usbd_hw_ep_read {
    None,
    Some(unsafe extern "C" fn(u8, *mut c_void, u16) -> i32),
}

Variants

None

No value.

Some(unsafe extern "C" fn(u8, *mut c_void, u16) -> i32)

Some value of type T.