QT210开发版裸奔点灯例程

/* * Copyright (c) 2010 Samsung Electronics Co., Ltd. * http://www.samsung.com/ * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 as * published by the Free Software Foundation. */ #include <stdio.h> #include <string.h> #include <stdlib.h> int main (int argc, char *argv[]) { FILE *fp; char *Buf, *a; int BufLen; int nbytes, fileLen; unsigned int checksum; int i; int readLen; ////////////////////////////////////////////////////////////// if (argc != 3) { printf("Usage: mkbl1 <source file> <destination file> \n"); return -1; } ////////////////////////////////////////////////////////////// BufLen = 8192;//atoi(argv[3]); Buf = (char *)malloc(BufLen); memset(Buf, 0x00, BufLen); ////////////////////////////////////////////////////////////// fp = fopen(argv[1], "rb"); if( fp == NULL) { printf("source file open error\n"); free(Buf); return -1; } fseek(fp, 0L, SEEK_END); fileLen = ftell(fp); fseek(fp, 0L, SEEK_SET); readLen = BufLen < (fileLen-16) ? BufLen : (fileLen-16); nbytes = fread(Buf+16, 1, readLen, fp); if ( nbytes != readLen ) { printf("source file read error\n"); free(Buf); fclose(fp); return -1; } fclose(fp); ////////////////////////////////////////////////////////////// a = Buf + 16; for(i = 0, checksum = 0; i < BufLen - 16; i++) checksum += (0x000000FF) & *a++; a = Buf; *( (unsigned int *)a ) = 0x2000; a = Buf + 8; *( (unsigned int *)a ) = checksum; ////////////////////////////////////////////////////////////// fp = fopen(argv[2], "wb"); if (fp == NULL) { printf("destination file open error\n"); free(Buf); return -1; } a = Buf; nbytes = fwrite( a, 1, BufLen, fp); if ( nbytes != BufLen ) { printf("destination file write error\n"); free(Buf); fclose(fp); return -1; } free(Buf); fclose(fp); return 0; }