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[英]How to solve a checksum mismatch error using the XBee API in Node.js
[英]Checksum Mismatch Error when using node-xbee to send a packet
配置為Coordinator API
XBee系列2試圖將數據包發送到配置為Router AT
的XBee系列2。 協調器已連接到運行node.js和xbee-api
庫的Mac OSX。
var frame_obj = {
type: 0x10,
ud: 0x01,
destination64: "0013a20040b19213",
data: "1"
}
serialport.write(xbeeAPI.buildFrame(frame_obj))
這會導致Node拋出錯誤:
/Users/me/Dropbox/Projects/test-node/node_modules/xbee-api/lib/xbee-api.js:173
throw new Error("Checksum Mismatch", S);
^
Error: Checksum Mismatch
at XBeeAPI.parseRaw (/Users/me/Dropbox/Projects/test-node/node_modules/xbee-api/lib/xbee-api.js:173:15)
at Object.parser (/Users/me/Dropbox/Projects/test-node/node_modules/xbee-api/lib/xbee-api.js:119:10)
at Object.SerialPort.options.dataCallback (/Users/me/Dropbox/Projects/test-node/node_modules/serialport/serialport.js:136:15)
at SerialPortFactory.SerialPort._emitData (/Users/me/Dropbox/Projects/test-node/node_modules/serialport/serialport.js:305:20)
at afterRead (/Users/me/Dropbox/Projects/test-node/node_modules/serialport/serialport.js:283:18)
at /Users/me/Dropbox/Projects/test-node/node_modules/serialport/serialport.js:297:9
at Object.wrapper [as oncomplete] (fs.js:454:17)
使用AT Router
端的Arduino串行監視器,我們可以看到協調器發送的數據實際上已到達路由器。
問題:為什么會有校驗和錯誤? 我們如何解決這個問題?
路由器AT配置
<data>
<profile>
<description_file>XB24-ZB_22A7.xml</description_file>
<settings>
<setting command="ID">2001</setting>
<setting command="SC">FFFF</setting>
<setting command="SD">3</setting>
<setting command="ZS">0</setting>
<setting command="NJ">FF</setting>
<setting command="NW">0</setting>
<setting command="JV">1</setting>
<setting command="JN">0</setting>
<setting command="DH">13A200</setting>
<setting command="DL">40A74613</setting>
<setting command="NI">0x20</setting>
<setting command="NH">1E</setting>
<setting command="BH">0</setting>
<setting command="AR">FF</setting>
<setting command="DD">30000</setting>
<setting command="NT">3C</setting>
<setting command="NO">3</setting>
<setting command="CR">3</setting>
<setting command="SE">E8</setting>
<setting command="DE">E8</setting>
<setting command="CI">11</setting>
<setting command="PL">4</setting>
<setting command="PM">1</setting>
<setting command="EE">0</setting>
<setting command="EO">0</setting>
<setting command="KY"></setting>
<setting command="BD">3</setting>
<setting command="NB">0</setting>
<setting command="SB">0</setting>
<setting command="RO">3</setting>
<setting command="D7">1</setting>
<setting command="D6">0</setting>
<setting command="CT">64</setting>
<setting command="GT">3E8</setting>
<setting command="CC">2B</setting>
<setting command="SM">0</setting>
<setting command="SN">1</setting>
<setting command="SO">0</setting>
<setting command="SP">20</setting>
<setting command="ST">1388</setting>
<setting command="PO">0</setting>
<setting command="D0">0</setting>
<setting command="D1">0</setting>
<setting command="D2">0</setting>
<setting command="D3">0</setting>
<setting command="D4">0</setting>
<setting command="D5">1</setting>
<setting command="P0">1</setting>
<setting command="P1">0</setting>
<setting command="P2">0</setting>
<setting command="PR">1FFF</setting>
<setting command="LT">0</setting>
<setting command="RP">28</setting>
<setting command="DO">1</setting>
<setting command="IR">3E8</setting>
<setting command="IC">0</setting>
<setting command="V+">0</setting>
</settings>
</profile>
</data>
協調器API配置
<data>
<profile>
<description_file>XB24-ZB_21A7.xml</description_file>
<settings>
<setting command="ID">2001</setting>
<setting command="SC">FFFF</setting>
<setting command="SD">3</setting>
<setting command="ZS">0</setting>
<setting command="NJ">FF</setting>
<setting command="DH">0</setting>
<setting command="DL">FFFF</setting>
<setting command="NI">0x20</setting>
<setting command="NH">1E</setting>
<setting command="BH">0</setting>
<setting command="AR">FF</setting>
<setting command="DD">30000</setting>
<setting command="NT">3C</setting>
<setting command="NO">3</setting>
<setting command="CR">3</setting>
<setting command="PL">4</setting>
<setting command="PM">1</setting>
<setting command="EE">0</setting>
<setting command="EO">0</setting>
<setting command="KY"></setting>
<setting command="NK"></setting>
<setting command="BD">3</setting>
<setting command="NB">0</setting>
<setting command="SB">0</setting>
<setting command="D7">1</setting>
<setting command="D6">0</setting>
<setting command="AP">1</setting>
<setting command="AO">0</setting>
<setting command="SP">20</setting>
<setting command="SN">1</setting>
<setting command="D0">1</setting>
<setting command="D1">0</setting>
<setting command="D2">0</setting>
<setting command="D3">0</setting>
<setting command="D4">0</setting>
<setting command="D5">1</setting>
<setting command="P0">1</setting>
<setting command="P1">0</setting>
<setting command="P2">0</setting>
<setting command="PR">1FFF</setting>
<setting command="LT">0</setting>
<setting command="RP">28</setting>
<setting command="DO">1</setting>
<setting command="IR">0</setting>
<setting command="IC">0</setting>
<setting command="V+">0</setting>
</settings>
</profile>
</data>
解析在協調器上接收到的幀時,似乎引發了錯誤。 如果是這樣,您可以轉儲接收到的幀嗎?
堆棧跟蹤指向fs.js:454:17
是您的代碼嗎? 什么東西在那里?
如果您嘗試使用xbee-api
其他示例,它們是否有效?
有點無關,但是我建議以115200 bps的速度運行協調器,並確保已在串行庫和XBee模塊上啟用了流控制。 這樣可以避免緩沖區溢出的問題。 來自網絡的數據在被堆積在XBee模塊上之前,已被傳遞到主機。
要啟用硬件流控制,請將XBee模塊上的ATD6
和ATD7
設置為1
。 這要求主機在發送給XBee之前先檢查來自XBee的CTS
信號,並在准備好從XBee接收字節時聲明RTS
信號。
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