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| 10 | <h1>uartsw2conf.h</h1><a href="uartsw2conf_8h.html">Go to the documentation of this file.</a><div class="fragment"><pre class="fragment">00001 <span class="comment">/*! \file uartsw2conf.h \brief Interrupt-driven Software UART Driver Configuration. */</span> |
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| 11 | 00002 <span class="comment">//*****************************************************************************</span> |
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| 12 | 00003 <span class="comment">//</span> |
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| 13 | 00004 <span class="comment">// File Name : 'uartsw2conf.h'</span> |
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| 14 | 00005 <span class="comment">// Title : Interrupt-driven Software UART Driver Configuration</span> |
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| 15 | 00006 <span class="comment">// Author : Pascal Stang - Copyright (C) 2002-2003</span> |
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| 16 | 00007 <span class="comment">// Created : 7/20/2002</span> |
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| 17 | 00008 <span class="comment">// Revised : 4/27/2004</span> |
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| 18 | 00009 <span class="comment">// Version : 0.6</span> |
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| 19 | 00010 <span class="comment">// Target MCU : Atmel AVR Series (intended for the ATmega16 and ATmega32)</span> |
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| 20 | 00011 <span class="comment">// Editor Tabs : 4</span> |
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| 21 | 00012 <span class="comment">//</span> |
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| 22 | 00013 <span class="comment">// Description :</span> |
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| 23 | 00014 <span class="comment">// This uart library emulates the operation of a UART (serial port) using</span> |
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| 24 | 00015 <span class="comment">// the AVR's hardware timers, I/O pins, and some software.</span> |
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| 25 | 00016 <span class="comment">//</span> |
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| 26 | 00017 <span class="comment">// Specifically, this code uses:</span> |
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| 27 | 00018 <span class="comment">// -Timer 2 Output Capture for transmit timing</span> |
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| 28 | 00019 <span class="comment">// -Timer 0 Output Capture for receive timing</span> |
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| 29 | 00020 <span class="comment">// -External Interrupt 2 for receive triggering</span> |
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| 30 | 00021 <span class="comment">//</span> |
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| 31 | 00022 <span class="comment">// The above resources cannot be used for other purposes while this software</span> |
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| 32 | 00023 <span class="comment">// UART is enabled. The overflow interrupts from Timer0 and Timer2 can still</span> |
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| 33 | 00024 <span class="comment">// be used for other timing, but the prescalers for these timers must not be</span> |
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| 34 | 00025 <span class="comment">// changed.</span> |
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| 35 | 00026 <span class="comment">//</span> |
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| 36 | 00027 <span class="comment">// Serial output from this UART can be routed to any I/O pin. Serial input</span> |
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| 37 | 00028 <span class="comment">// for this UART must come from the External Interrupt 2 (INT2) I/O pin.</span> |
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| 38 | 00029 <span class="comment">// These options should be configured by editing your local copy of</span> |
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| 39 | 00030 <span class="comment">// "uartsw2conf.h".</span> |
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| 40 | 00031 <span class="comment">//</span> |
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| 41 | 00032 <span class="comment">// This code is distributed under the GNU Public License</span> |
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| 42 | 00033 <span class="comment">// which can be found at http://www.gnu.org/licenses/gpl.txt</span> |
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| 43 | 00034 <span class="comment">//</span> |
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| 44 | 00035 <span class="comment">//*****************************************************************************</span> |
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| 45 | 00036 |
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| 46 | 00037 <span class="preprocessor">#ifndef UARTSW2CONF_H</span> |
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| 47 | 00038 <span class="preprocessor"></span><span class="preprocessor">#define UARTSW2CONF_H</span> |
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| 48 | 00039 <span class="preprocessor"></span> |
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| 49 | 00040 <span class="comment">// constants/macros/typdefs</span> |
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| 50 | 00041 |
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| 51 | <a name="l00042"></a><a class="code" href="uartsw2conf_8h.html#a0">00042</a> <span class="preprocessor">#define UARTSW_RX_BUFFER_SIZE 0x20 </span><span class="comment">///< UART receive buffer size in bytes</span> |
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| 52 | 00043 <span class="comment"></span> |
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| 53 | <a name="l00044"></a><a class="code" href="uartsw2conf_8h.html#a1">00044</a> <span class="preprocessor">#define UARTSW_INVERT </span><span class="comment">///< define to invert polarity of RX/TX signals</span> |
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| 54 | 00045 <span class="comment"></span>// when non-inverted, the serial line is appropriate for passing though |
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| 55 | 00046 <span class="comment">// an RS232 driver like the MAX232. When inverted, the serial line can</span> |
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| 56 | 00047 <span class="comment">// directly drive/receive RS232 signals to/from a DB9 connector. Be sure</span> |
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| 57 | 00048 <span class="comment">// to use a current-limiting resistor and perhaps a diode-clamp circuit when</span> |
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| 58 | 00049 <span class="comment">// connecting incoming RS232 signals to a microprocessor I/O pin.</span> |
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| 59 | 00050 |
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| 60 | 00051 <span class="comment">// if non-inverted, the serial line idles high (logic 1) between bytes</span> |
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| 61 | 00052 <span class="comment">// if inverted, the serial line idles low (logic 0) between bytes</span> |
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| 62 | 00053 |
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| 63 | 00054 |
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| 64 | 00055 <span class="comment">// UART transmit pin defines</span> |
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| 65 | <a name="l00056"></a><a class="code" href="uartsw2conf_8h.html#a2">00056</a> <span class="preprocessor">#define UARTSW_TX_PORT PORTB </span><span class="comment">///< UART Transmit Port</span> |
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| 66 | <a name="l00057"></a><a class="code" href="uartsw2conf_8h.html#a3">00057</a> <span class="comment"></span>#define UARTSW_TX_DDR DDRB <span class="comment">///< UART Transmit DDR</span> |
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| 67 | <a name="l00058"></a><a class="code" href="uartsw2conf_8h.html#a4">00058</a> <span class="comment"></span>#define UARTSW_TX_PIN PB3 <span class="comment">///< UART Transmit Pin</span> |
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| 68 | 00059 <span class="comment"></span> |
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| 69 | 00060 <span class="comment">// UART receive pin defines</span> |
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| 70 | 00061 <span class="comment">// This pin must correspond to the</span> |
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| 71 | 00062 <span class="comment">// External Interrupt 2 (INT2) pin for your processor</span> |
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| 72 | <a name="l00063"></a><a class="code" href="uartsw2conf_8h.html#a5">00063</a> <span class="preprocessor">#define UARTSW_RX_PORT PORTB </span><span class="comment">///< UART Receive Port</span> |
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| 73 | <a name="l00064"></a><a class="code" href="uartsw2conf_8h.html#a6">00064</a> <span class="comment"></span>#define UARTSW_RX_DDR DDRB <span class="comment">///< UART Receive DDR</span> |
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| 74 | <a name="l00065"></a><a class="code" href="uartsw2conf_8h.html#a7">00065</a> <span class="comment"></span>#define UARTSW_RX_PORTIN PINB <span class="comment">///< UART Receive Port Input</span> |
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| 75 | <a name="l00066"></a><a class="code" href="uartsw2conf_8h.html#a8">00066</a> <span class="comment"></span>#define UARTSW_RX_PIN PB2 <span class="comment">///< UART Receive Pin</span> |
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| 76 | 00067 <span class="comment"></span> |
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| 77 | 00068 <span class="preprocessor">#endif</span> |
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| 78 | </pre></div><hr size="1"><address style="align: right;"><small>Generated on Sun Oct 29 03:41:06 2006 for Procyon AVRlib by |
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| 80 | <img src="doxygen.png" alt="doxygen" align="middle" border="0"></a> 1.4.2 </small></address> |
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