PROGMEM problem with structs

this code used work has stopped working , "warning: '__progmem__' attribute ignored [-wattributes]" message:

class commandcodes { 
public: 
 // destructor 
 ~commandcodes() {};  
   struct commandcode {
      int code;
      const char *name;
   } commandcode;

   const commandcode commands[last_command] progmem = {
      { cmd_demo, "demo" } ,
      { cmd_stop, "stop" } ,
      { cmd_forward, "forward" },
      { cmd_backward, "backward" },
      { cmd_turn_left, "turn left" },
      { cmd_turn_right, "turn right" },
      { cmd_spin_left, "spin left" },
      { cmd_spin_right, "spin right" },
      { cmd_left_forward, "left forward" },
      { cmd_left_backward, "left backward" },
      { cmd_left_stop, "left stop" },
      { cmd_right_forward, "right forward" },
      { cmd_right_backward, "right backward" },
      { cmd_right_stop, "right stop" },
      { cmd_wait, "wait" },
      { cmd_wait_done, "wait done" },
      { cmd_motor_diags, "motor diagnostics " },
      { cmd_led_diags, "led diagnostics" },
      { cmd_servo_diags, "servo diagnostics" },
      { cmd_ods_diags, "sensor diagnostics" },
   };

this code used work has stopped working , "warning: '__progmem__' attribute ignored [-wattributes]" message:

this code used work has stopped working , "warning: '__progmem__' attribute ignored [-wattributes]" message:

commandcodes.h:

code: [select]

class commandcodes { 
public: 
       // destructor 
       ~commandcodes() {};  
struct commandcode {
int code;
const char *name;
} commandcode;

const commandcode commands[last_command] progmem = {
{ cmd_demo, "demo" } ,
{ cmd_stop, "stop" } ,
{ cmd_forward, "forward" },
{ cmd_backward, "backward" },
{ cmd_turn_left, "turn left" },
{ cmd_turn_right, "turn right" },
{ cmd_spin_left, "spin left" },
{ cmd_spin_right, "spin right" },
{ cmd_left_forward, "left forward" },
{ cmd_left_backward, "left backward" },
{ cmd_left_stop, "left stop" },
{ cmd_right_forward, "right forward" },
{ cmd_right_backward, "right backward" },
{ cmd_right_stop, "right stop" },
{ cmd_wait, "wait" },
{ cmd_wait_done, "wait done" },
{ cmd_motor_diags, "motor diagnostics " },
{ cmd_led_diags, "led diagnostics" },
{ cmd_servo_diags, "servo diagnostics" },
{ cmd_ods_diags, "sensor diagnostics" },
};
// checks valid command code
bool isvalid(int code);

// prints name associated code
void name(int code);

// prints commands
void show();

// prints command code , name
void showcommand(commandcode cmd);

// prints command code , name
void showcommand(int code, const char* name);

};


commandcodes.cpp

code: [select]


#include "commandcodes.h"

bool commandcodes::isvalid(int code) {
for (int = first_command; < last_command; i++) {
if (commands[i].code == code) {
return true;
}
}

return false;
}

void commandcodes::name(int code) {
for (int = first_command; < last_command; i++) {
if (commands[i].code == code) {
serial.print (commands[i].name);
return;
}
}
}

void commandcodes::show() {
serial.print(last_command);
serial.println(f(" comands defined:"));
for (int = first_command; < last_command; i++) {
showcommand(commands[i].code, commands[i].name);
}
}

void commandcodes::showcommand(commandcode cmd) {
showcommand(cmd.code, cmd.name);
}

void commandcodes::showcommand(int code, const char* name) {
if (code > first_command) {
serial.print(f("["));
serial.print(code);
serial.print(f("] "));
serial.println(name);
}

}


i have read nick gammon's great post about progmem. still missing critical. 

Arduino Forum > Using Arduino > Programming Questions > PROGMEM problem with structs

arduino