實現Socket通訊

1.網頁測試工具

2.串列埠除錯工具llcom  相關資訊輸出到串列埠，便於掌握程式的運**況

3.arduino string庫函式詳解

本程式：使用socket實現通訊，dtu向伺服器傳送"ready"表示裝置上線，服務端向dtu傳送1或2控制dtu上led燈的顏色,3關閉所有socket，裝置下線；服務端發回的其他資訊可列印到串列埠

注意選擇開發板為m5stack atom

#include #include 

atom_dtu_nb dtu;
const
char* hex = "
0123456789abcdef";
string data1 = "
ready";
string readstr;
string str_hex;
string hex_str;
char getvalue(char x)
}int
s,ed;
void stringtohex(string thedata)
}void
hextostring(string thedata)
}void
setup() 
while(!readstr);
serial.print(readstr);
if(readstr.endswith("
ok\r\n"))
else
dtu.sendmsg(
"at+csoc=1,1,1\r\n");
delay(
2); 
dtu.sendmsg(
"at+csocon=0,37652,112.125.89.8\r\n");
dowhile(!readstr);
serial.print(readstr);
if(readstr.endswith("
ok\r\n"))
else
stringtohex(data1);
string tmp1 = "
at+csosend=0,10,";
tmp1 +=str_hex;
tmp1 += "
\r\n";
dtu.sendmsg(tmp1); 
//向服務端傳送"ready"
}void
loop() 
else
if(hex_str.equals("2"
))    
else
if(hex_str.equals("
3"))
else
serial.print(hex_str);
}}

#include #include 

atom_dtu_nb dtu;
const
char* hex = "
0123456789abcdef";
string data1 = "
ready";
string readstr;
string str_hex;
string hex_str;
string tmp1;
char
socket_id;
char getvalue(char x)
}int
s,ed;
void stringtohex(string thedata)
}void
hextostring(string thedata)
}void
myread()
while(!readstr);
serial.print(readstr);
}void
setup() 
else
dtu.sendmsg(
"at+csoc=1,1,1\r\n");
delay(
2); 
myread();
socket_id = readstr.charat(readstr.indexof("
+csoc: 
")+7
);  tmp1 = "
at+csocon=*,34026,112.125.89.8\r\n";
tmp1.setcharat(tmp1.indexof("*
"),socket_id);
dtu.sendmsg(tmp1);
readstr = dtu.waitmsg(3000
);  
if(readstr.endswith("
ok\r\n"))
else
stringtohex(data1);
tmp1 = "
at+csosend=*,10,";
tmp1.setcharat(tmp1.indexof("*
"),socket_id);
tmp1 +=str_hex;
tmp1 += "
\r\n";
dtu.sendmsg(tmp1); 
//向服務端傳送"ready"
應用跑完，關閉掉所有的socket連線，是乙個好習慣。
				
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