serial port - Arduino: How store values in a char array in one line then clear/empty a char array? -


i attempting write code store command text between { , } serial terminal. far have: 

byte index = 0; // index array; store character char cmdarr[10];  boolean startofline = false; boolean endofline = false;  void setup() {   serial.begin(38400); }  void serialevent() {   while (serial.available())   {     char cmd = (char)serial.read();      if (cmd == '{')     {        startofline = true;     }      if (cmd == '}')     {        endofline = true;       //cmdarr[index] = '\0'; //null terminate c string; i'm not sure if needed     }      if (startofline && cmd != '{'  && cmd != '}')     {       cmdarr[index++] = cmd;     }      if (startofline && endofline)     {       int i;        (i = 0; < 10; i++)       {         //do command       }        startofline = false;       endofline = false;       break;     }   } }  void loop() {  }

i able iterate through cmdarr print out array values. right now, example, command getting stored so: char cmdarr[10] = {'p', 'h', 'c', '\0'}; possible store command char cmdarr[10] = {"phc"};? also, how clear/empty command ready next command?

new code seems working. resorted using string since seemed easiest approach: 

string cmddata; //store complete command on 1 line send sensor board.  boolean startofline = false; boolean endofline = false;  void setup() {   serial.begin(38400);   serial3.begin(38400); }  void serialevent() {   while (serial.available())   {     char cmd = (char)serial.read();      if (cmd == '{')     {        startofline = true;     }      if (cmd == '}')     {        endofline = true;     }      if (startofline && cmd != '{'  && cmd != '}')     {       //serial.print("send command");       cmddata += cmd;     }      if (startofline && endofline)     {        startofline = false;       endofline = false;        cmddata += '\r';        serial3.print(cmddata);        cmddata = "";     }   } }  void serialevent3() {   char cmd3 = (char)serial3.read();   serial.print(cmd3); }  void loop() {  }

the cmdarr contiguous block of memory. in sense data stored there "phc\0". should able use cmdarr pointer able print data string instead of accessing characters 1 one (you can access characters 1 one pointers though). in solution don't think need clear array ever. enough set index 0 , make sure when wrote characters terminate string \0 (what doing). strings in c 0 terminated. if want process contents 1 one in loop need exit loop if encounter zero.


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