I can't receive \x11 bytes of data

[vladimire-chen]

Everything is working fine, but the strange thing is that I can't receive \x11 bytes of data.
The data I receive is [EF, AA, 01, 00, 01, 01, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, FF, 00, FF, 00, FF], but it should actually be [EF, AA, 01, 00, 11, 01, 01, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, FF, 00, FF, 00, FF]