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42 lines
1.7 KiB
Python
42 lines
1.7 KiB
Python
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##
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## This file is part of the libsigrokdecode project.
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##
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## Copyright (C) 2012 Uwe Hermann <uwe@hermann-uwe.de>
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##
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## This program is free software; you can redistribute it and/or modify
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## it under the terms of the GNU General Public License as published by
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## the Free Software Foundation; either version 2 of the License, or
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## (at your option) any later version.
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##
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## This program is distributed in the hope that it will be useful,
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## but WITHOUT ANY WARRANTY; without even the implied warranty of
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## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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## GNU General Public License for more details.
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##
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## You should have received a copy of the GNU General Public License
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## along with this program; if not, write to the Free Software
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## Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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##
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'''
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UART (Universal Asynchronous Receiver Transmitter) is a simple serial
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communication protocol which allows two devices to talk to each other.
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This decoder should work on all "UART-like" async protocols with one
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start bit (0), 5-9 databits, an (optional) parity bit, and one or more
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stop bits (1), in this order.
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It can be run on one signal line (RX or TX) only, or on two lines (RX + TX).
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There are various standards for the physical layer specification of the
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signals, including RS232, (TTL) UART, RS485, and others. However, the logic
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level of the respective pins is only relevant when acquiring the data via
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a logic analyzer (you have to select the correct logic analyzer and/or
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the correct place where to probe). Once the data is in digital form and
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matches the "UART" description above, this protocol decoder can work with
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it though, no matter whether the source was on TTL UART levels, or RS232,
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or others.
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'''
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from .pd import Decoder
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