/* * Module: cmIniFile.c * * Description: This file contains all of the routines associated with *      reading an .ini file upon startup */#include <stdio.h>#include <string.h>#include "cmAPI.h"#include "cmRegisterIO.h"static char initfilename[] = "cmAPI.ini";       /* default file name */extern g_debug;/* forward declarations */int parseCmd (FILE *fp, unsigned char *cmd_p, unsigned int *addr_p, unsigned int *data_p);#define CMD_WRITE 0#define CMD_READ 1/* * Function:  cmIniFileRead * * Description: Read the ini initialization file *              This function calls the Register I/O interface to set up *              values. * *              FORMAT: *                  r 05             Reads register 0x05 *                  w 05 32          Writes 0x32 to register 0x05 * *          Each command is executed in the sequence provided. * * Input: *          filename        If null then just exit. Otherwise, read the *                          file. */int cmIniFileRead (char *filename){    FILE *fp;                   /* file pointer */    unsigned char command;      /* 00 = write, 01 = read */    unsigned int addr;          /* register address to read or write to */    unsigned int data;          /* data to read or write */    int status = 0;             /* - = error */    if (filename == NULL) {        return status;    }    /* open the initialization file */    fp = fopen (filename, "r");    if (fp == NULL) {        printf ("\nError opening file %s\n", filename);        return -1;    }    /* read in command from file.  Command :00 = write register,        01 = read register. Load the address and data variables.  */    while (1) {        /* parse command */        status = parseCmd (fp, &command, &addr, &data);        if (status < 0) {            break;        }        if (status == 1) {      /* end of file */            if (g_debug > 0) printf ("\nDetected end of file \n");            break;        }        /* process command */        if (command == CMD_WRITE) {            status = cmRegisterWrite (addr, data);            if (status < 0) {                printf ("\nError writing register\n");                break;            }        } else {            status = cmRegisterRead (addr, &data);            if (status < 0) {                printf ("\nError reading register\n");                break;            }        }    }    fclose (fp);    return status;}/* * parsecmd * * Assumes an ascii text file */int parseCmd (FILE *fp, unsigned char *cmd_p, unsigned int *addr_p, unsigned int *data_p){    int status = 0;    int s = 0;    unsigned char buf[4];    *addr_p = 0;    *data_p = 0;    /* read in one line. Note that reads only have two tokens, but we try to        read 3. That is OK. We will just ignore the "data" variable value */    s = fscanf (fp, "%s", buf);    if (s == EOF) {        status = 1;     /* end of file condition */    } else {        if (strcmp (buf, "r") == 0) {       /* read */            *cmd_p = CMD_READ;            *data_p = 0;            s = fscanf (fp, "%x", addr_p);  /* read address */            if (s == EOF) {                if (g_debug > 2) printf ("EOF detected\n");                *addr_p = 0;                status = 1;            }        } else if (strcmp (buf, "w") == 0) {            *cmd_p = CMD_WRITE;            s = fscanf (fp, "%x", addr_p);  /* read address */            if (s == EOF) {                if (g_debug > 2) printf ("EOF detected\n");                *addr_p = 0;                status = 1;            } else {                s = fscanf (fp, "%x", data_p);  /* read data */                if (s == EOF) {                    if (g_debug > 2) printf ("EOF detected\n");                    *addr_p = 0;                    *data_p = 0;                    status = 1;                }            }        } else {            printf ("Invalid command\n");            status = -1;        }        if (g_debug > 2) {            printf ("\nCommand = %s, addr = %d, data = %d\n", buf, *addr_p, *data_p);		}    }    return status;}