Traverse struct with pointer

hi all,
if have struct following...

code: [select]


struct config_t
{
 byte mac[6];
 byte ip[4];
 byte subnet[4];
 byte gateway[4];
 byte server[4];
 char path[128];
};


can set pointer struct can take serial input , put each input byte struct in 1 shot out having refer each of struct's members individually.

i can't seem work.
below doing, seems kinda clunky.

code: [select]


void checkserial(){

 if (serial.available() > 0){
   switch (serial.read()){
   case 'w':
     {
       delay(1000);
       int i=0;
       while ((serial.available()>0) && i<6) configuration.mac[i++] = serial.read();
       serial.println(i);
       i=0;
       while ((serial.available()>0) && i<4) configuration.ip[i++] = serial.read();
       serial.println(i);
       i=0;
       while ((serial.available()>0) && i<4) configuration.subnet[i++] = serial.read();
       serial.println(i);
       i=0;
       while ((serial.available()>0) && i<4) configuration.gateway[i++] = serial.read();
       serial.println(i);
       i=0;
       while ((serial.available()>0) && i<4) configuration.server[i++] = serial.read();
       serial.println(i);
       i=0;
       while(serial.available() > 0) configuration.path[i++] = serial.read();

       configuration.path[i++] = '\0';
       serial.println(i);
       printconfig();
     }
     eeprom_writeanything(0, configuration);
     //printconfig();
     break;

   case 'r':
     eeprom_readanything(0, configuration);
     printconfig();
     break;

   default:
     serial.flush();

   }

 }

}


thanks in advance
jeff

a union should work. union allows refer section
of memory in multiple ways. if create union between
struct , array of bytes can access memory bytes
or struct fields.

this handy real-time clock library wrote. for
transmitting bytes easier use array. setting values
using field names sec, min. hour easier.

there simpler examples @ rtc library , example code @ http://tinyurl.com/y8exe7k

(* jcl *)

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Arduino Forum > Forum 2005-2010 (read only) > Software > Syntax & Programs > Traverse struct with pointer

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