Function linuxcnc_hal_sys::hal_port_write

pub unsafe extern "C" fn hal_port_write(
    port: hal_port_t, 
    src: *const c_char, 
    count: c_uint
) -> bool

hal_port_write writes count bytes from src into the port. This function should only be called by the component that owns the OUT PORT pin. returns: true: count bytes were written false: no bytes were written into dest