#!/bin/sh##   ti processor sdk linux am335x evm /bin/setup-minicom.sh hacking# 说明：#     本文主要对TI的sdk中的setup-minicom.sh脚本进行解读，是为了了解# 其工作机制。##                                      2016-4-16 深圳 南山平山村 曾剑锋# This distribution contains contributions or derivatives under copyright# as follows:## Copyright (c) 2010, Texas Instruments Incorporated# All rights reserved.## Redistribution and use in source and binary forms, with or without# modification, are permitted provided that the following conditions# are met:# - Redistributions of source code must retain the above copyright notice,#   this list of conditions and the following disclaimer.# - Redistributions in binary form must reproduce the above copyright#   notice, this list of conditions and the following disclaimer in the#   documentation and/or other materials provided with the distribution.# - Neither the name of Texas Instruments nor the names of its#   contributors may be used to endorse or promote products derived#   from this software without specific prior written permission.## THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED# TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR# PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT HOLDER OR# CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,# EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,# PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR# PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF# LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE# OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF# ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.cwd=`dirname $0`. $cwd/common.shminicomcfg=${HOME}/.minirc.dflcat << EOM--------------------------------------------------------------------------------"This step will set up minicom (serial communication application) forSDK developmentFor boards that contain a USB-to-Serial converter on the board such as:    * BeagleBone    * Beaglebone Black    * AM335x EVM-SKthe port used for minicom will be automatically detected. By default Ubuntuwill not recognize this device. Setup will add a udev rule to/etc/udev/ so that from now on it will be recognized as soon as the board isplugged in.For other boards, the serial will defualt to /dev/ttyS0. Please update basedon your setup.--------------------------------------------------------------------------------EOM默认的端口portdefault=/dev/ttyS0echo ""echo "NOTE: If your using any of the above boards simply hit enter"echo "and the correct port will be determined automatically at a"echo "later step.  For all other boards select the serial port"echo "that the board is connected to."echo "Which serial port do you want to use with minicom?"read -p "[ $portdefault ] " port# 如果没有输入，那么就是用默认配置if [ ! -n "$port" ]; then    port=$portdefaultfi# 备份之前的配置if [ -f $minicomcfg ]; then    cp $minicomcfg $minicomcfg.old    echo    echo "Copied existing $minicomcfg to $minicomcfg.old"fiecho "pu port             $portpu baudrate         115200pu bits             8pu parity           Npu stopbits         1pu minitpu mresetpu mdialprepu mdialsufpu mdialpre2pu mdialsuf2pu mdialpre3pu mdialsuf3pu mconnectpu mnocon1          NO CARRIERpu mnocon2          BUSYpu mnocon3          NO DIALTONEpu mnocon4          VOICEpu rtscts           No" | tee $minicomcfg > /dev/null  # tee：读取标准输入的数据，并将其内容输出成文件。check_statusechoecho "Configuration saved to $minicomcfg. You can change it further from inside"echo "minicom, see the Software Development Guide for more information."echo "--------------------------------------------------------------------------------"