## GNU General Public License for more details.
##
## You should have received a copy of the GNU General Public License
-## along with this program; if not, write to the Free Software
-## Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+## along with this program; if not, see <http://www.gnu.org/licenses/>.
##
'''
-UART protocol decoder.
-
-Universal Asynchronous Receiver Transmitter (UART) is a simple serial
+UART (Universal Asynchronous Receiver Transmitter) is a simple serial
communication protocol which allows two devices to talk to each other.
This decoder should work on all "UART-like" async protocols with one
-start bit (0), 7-9 databits, an (optional) parity bit, and one or more
+start bit (0), 5-9 databits, an (optional) parity bit, and one or more
stop bits (1), in this order.
It can be run on one signal line (RX or TX) only, or on two lines (RX + TX).
matches the "UART" description above, this protocol decoder can work with
it though, no matter whether the source was on TTL UART levels, or RS232,
or others.
-
-Protocol output format:
-
-UART packet:
-[<packet-type>, <rxtx>, <packet-data>]
-
-This is the list of <packet-type>s and their respective <packet-data>:
- - 'STARTBIT': The data is the (integer) value of the start bit (0/1).
- - 'DATA': The data is the (integer) value of the UART data. Valid values
- range from 0 to 512 (as the data can be up to 9 bits in size).
- - 'PARITYBIT': The data is the (integer) value of the parity bit (0/1).
- - 'STOPBIT': The data is the (integer) value of the stop bit (0 or 1).
- - 'INVALID STARTBIT': The data is the (integer) value of the start bit (0/1).
- - 'INVALID STOPBIT': The data is the (integer) value of the stop bit (0/1).
- - 'PARITY ERROR': The data is a tuple with two entries. The first one is
- the expected parity value, the second is the actual parity value.
- - TODO: Frame error?
-
-The <rxtx> field is 0 for RX packets, 1 for TX packets.
'''
-from .pd import *
-
+from .pd import Decoder