📄 at指令详细介绍.htm
字号:
<TR> <TD height=4></TD> </TR> <TR> <TD height=20> <IMG height=7 src="images/icon_left01.gif" width=7><a href="p-5.htm" class="mtx style4">G18（GPRS)</a> </TD> </TR> <TR> <TD height=20> <IMG height=7 src="images/icon_left01.gif" width=7><a href="p-6.htm" class="mtx style4">G20(TCP/IP)</a> </TD> </TR> <TR> <TD height=20> <IMG height=7 src="images/icon_left01.gif" width=7><span class="style4"><a href="p-7.htm" class="mtx">G20开发板</a></span></TD> </TR> <TR> <TD height=20> <IMG height=7 src="images/icon_left01.gif" width=7><span class="style4"><a href="images/xz/2.htm" onClick="window.open(this.href,'newtxt','top=300,left=250,width=328,height=126,scrollbars=no,resizable=no');return false;" class="mtx">Motorola GPRS管理器及驱动程序</a></span></TD> </TR> </TBODY> </TABLE> <TABLE cellSpacing=0 cellPadding=0 width=160 border=0> <TBODY> <TR bgColor=#cdcdcd> <TD colSpan=2 height=1></TD> </TR> <TR onmouseout="this.style.backgroundColor='' "onmouseover="this.style.backgroundColor='#FFffff'" > <TD style="PADDING-LEFT: 18px" height=20><span class="style2"><strong>天线系列</strong> </span></TD> <TD width=11><IMG height=7 src="images/icon_left01.gif" width=7></TD> </TR> </TBODY> </TABLE> <TABLE cellSpacing=0 cellPadding=0 width=161 border=0> <TBODY> <TR> <TD width="161"><IMG src="images/con_left02.gif" width="161" height="2"></TD> </TR> <TR> <TD height=4></TD> </TR> <TR> <TD height=20> <IMG height=7 src="images/icon_left01.gif" width=7><a href="p-9.htm" class="mtx style4">GSM车载天线</a> </TD> </TR> <TR> <TD height=20> <IMG height=7 src="images/icon_left01.gif" width=7><a href="p-10.htm" class="mtx style4">GPS车载天线</a> </TD> </TR> <TR> <TD height=20> <IMG height=7 src="images/icon_left01.gif" width=7><span class="style4"><a href="p-11.htm" class="mtx">MOTOROLA授时天线</a></span></TD> </TR> <TR> <TD height=20> <IMG height=7 src="images/icon_left01.gif" width=7><span class="style4"><a href="p-12.htm" class="mtx">AERO授时天线</a></span></TD> </TR> </TBODY> </TABLE> <TABLE cellSpacing=0 cellPadding=0 width=160 border=0> <TBODY> <TR bgColor=#cdcdcd> <TD colSpan=2 height=1></TD> </TR> <TR onmouseout="this.style.backgroundColor='' "onmouseover="this.style.backgroundColor='#FFffff'" > <TD style="PADDING-LEFT: 18px" height=20><span class="style2"><strong><a href="p-13.htm">配件</a></strong> </span></TD> <TD width=11> </TD> </TR> </TBODY> </TABLE> <TABLE cellSpacing=0 cellPadding=0 width=161 border=0> <TBODY> <TR> <TD width="161"><IMG src="images/con_left02.gif" width="161" height="2"></TD> </TR> <TR> <TD height=4></TD> </TR> </TBODY> </TABLE> <TABLE cellSpacing=0 cellPadding=0 width=160 border=0> <TBODY> <TR bgColor=#cdcdcd> <TD height=1></TD> </TR> <TR onmouseout="this.style.backgroundColor='' "onmouseover="this.style.backgroundColor='#FFffff'" > <TD height=20 style="PADDING-LEFT: 18px"><span class="style2"><strong><span class="style4"><a href="p-17.htm">TPMS轮胎气压监视系统</a></strong> </span></TD> </TR> </TBODY> </TABLE> <TABLE cellSpacing=0 cellPadding=0 width=161 border=0> <TBODY> <TR> <TD width="161"><IMG src="images/con_left02.gif" width="161" height="2"></TD> </TR> <TR> <TD height=4></TD> </TR> </TBODY> </TABLE></TD> </TR> </TBODY> </TABLE></TD> <TD vAlign=top colSpan=2 height=100><!-- InstanceBeginEditable name="EditRegion1" --> <TABLE height="100%" cellSpacing=0 cellPadding=0 width="100%" border=0> <TBODY> <TR> <TD width=591 vAlign=top bgColor=#ffffff><TABLE cellSpacing=0 cellPadding=0 width="100%" border=0> <TBODY> <TR> </TR> <TR> <TD> <TABLE style="BORDER-RIGHT: #ffffff 1px solid" cellSpacing=0 cellPadding=0 width="100%" border=0> <TBODY> <TR> <TD bgColor=#d0cfcf height=24> <A class=ttx href="index.htm">首页</A> >> 产品介绍>> GSM系列>> <span class="style4">G20 开发板</span> </TD> </TR> </TBODY> </TABLE> <TABLE cellSpacing=0 cellPadding=0 width="100%" border=0> <TBODY> <TR> <TD class=sectab><TABLE width="100%" border=0 align="right" cellPadding=0 cellSpacing=4> <TBODY> <TR> <TD height=30 vAlign=top><IMG height=14 src="images/icon_tit01.gif" width=8><IMG height=14 src="images/h.jpg" width=176> <HR style="COLOR: #bfbfbf" width="100%" SIZE=1> </TD> </TR> <TR> <TD style="TEXT-ALIGN: justify"><table width="100%" border="0" cellspacing="0" cellpadding="0"> <tr> <td><IMG src="images/cp/g20k.jpg" width=202 height="152" border=0> </td> <td> </td> </tr> </table> <HR style="COLOR: #bfbfbf" width="100%" SIZE=1> <table width="100%" border="0" cellspacing="0" cellpadding="0"> <tr> <td><strong>一、 开发器功能介绍：</strong><br> <strong><span class="style16">■ </span></strong>标准的RS232接口。<br> <strong><span class="style16">■ </span></strong>标准的USB接口。<br> <strong><span class="style16">■ </span></strong>LED指示灯显示功能。<br> <strong><span class="style16">■ </span></strong>HEADSET语音功能。<br> <strong><span class="style16">■ </span></strong>宽范围直流电压输入。<br> <strong><span class="style16">■ </span></strong>两种可选择的上电方式。<br> <strong><span class="style16">■ </span></strong>两种可选择的RS232连接方式。<br> <strong><span class="style16">■ </span></strong>两种可选择的SIM卡检测方式。<br> <strong><span class="style16">■ </span></strong>可供调试的70PIN DIP 插座。<br> <strong><span class="style16">■ </span></strong>硬件支持无线Modem功能。 <p><strong>二、 连接器示意图定义及说明：</strong><br> <img src="images/cp/g20-3.jpg" width="398" height="321"> <br> J103：USB插座。方口USB插座，可直接连接通用USB线缆。<br> J104：RS232插座。可直接连接标准九针串口线缆（一对一）。<br> J105：IGN选择。跳线连接为IGN上电方式，<br> J106：耳机插座。可插入标准的耳机线缆，作为模拟音频的接口。<br> J201：电源输入插座。可接入5~42V的标准直流稳压电源，里正外负。<br> J301、J302：MCU选择。用跳线连接，用于单片机三线串口通讯。<br> SW102：ON/OFF按钮。在不选择IGN上电方式时，采用该按钮上、下电。<br> SW201：电源开关按钮。插入电源后，按此按钮可为开发板加电或断电。</p> <p><strong>三、 指示灯定义：</strong><br> 1． 电源指示灯部分：<br> P_ON： 电源开关指示灯。<br> 2． G20指示灯部分：<br> RST： G20模块复位指示灯。正常闪亮，表示模块正常上电。<br> IGN： IGN上电方式指示灯。灯亮，表示IGN方式上电。<br> S_R： SIM卡复位指示灯。正常闪亮，表示SIM卡正常上电。<br> RFT： RF发射指示灯。RF工作时闪亮。<br> GPRS： GPRS覆盖指示灯。<br> 3． USB指示灯部分：<br> UVC： USB电源指示灯。<br> UD+： USB D+指示灯。<br> 4． RS232指示灯部分：<br> RXD：数据接收指示灯。<br>⌨️ 快捷键说明
复制代码
Ctrl + C
搜索代码
Ctrl + F
全屏模式
F11
切换主题
Ctrl + Shift + D
显示快捷键
?
增大字号
Ctrl + =
减小字号
Ctrl + -