Symbolic Access To Embedded Controllers

Listing 1 Message interpreter definitions and function prototypes

/* parsdef.h */
/* No copyrights claimed */
#define ERROR              1
#define EMPTY              2
#define ASSIGN             3
#define REQUEST            4
#define TO_EEPROM          5
#define IS                 6
#define COMMAND            7
#define INTEGER            8
#define NAME               10
#define NAME_ERROR         11
#define OP_ERROR           12
#define VAL_ERROR          13
#define END_ERROR          14
#define POOL_ERROR         15
#define UNDEF_SYMB         16
#define NOT_EEPROM         17
#define UNDEF_FUNC         18
#define MAX_TOKEN_LEN      10
#define MAX_STATEMENTS     20
#define STRINGPOOL         80
#define MESSAGELENGTH      80

typedef struct {
   int command;
   int type;
   char *name;
   int  value;
} toDoList;

typedef struct {
   char *name;
   int ival;
   char *(*func)(char *);
   int eeOffset;    /* -1 if not saved in eeprom */
} symTabEntry;

char        *Assign(toDoList *pL, char *pTx);
void         DoCommands(toDoList *pL);
symTabEntry *FindSymbol(char *name);
char        *GetNextToken(char *begin, char *token, int *type);
void         Parse(char *message, toDoList *pL);
void         PrintToDo(toDoList *toDo);
char        *Request(toDoList *pL, char *pTx);
char        *Reset(char *ptr);
char        *RunCommand(toDoList *pL, char *pTx);
char        *SayError(toDoList *pL, int err, char *cp);
int          StoreToken(char **strp, char *token);
int          SymCmp(symTabEntry *a, symTabEntry *b);
char        *ToEeprom(toDoList *pL, char *pTx);
char        *TxBuffer(void);
void         WriteEeprom(symTabEntry *pSym, int type);

/* End of File */