BIN_SUM

// BinCrcSum.cpp : 定义控制台应用程序的入口点。
//author：sunwei
//2019/1/19

#include "stdafx.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <assert.h>
#include <stdarg.h>
#include <stdint.h>
#include <time.h>
#include <direct.h>
#include "resource.h"

#pragma warning(disable : 4996)

#define PATH_B  "./GSP_APP/Exe/GSP_APP.bin"//"D:/SVN_1015/GSP_TRUNK/GSP_APP/EWARM/GSP_APP/Exe/GSP_APP.bin"


char* ReadFile (const char* szPath, size_t* pullsize)
{
    assert (szPath != NULL);
    FILE* hFile = fopen (szPath, "rb+");
    if(hFile == NULL)
	{
		printf("Path is error->%s
", szPath);
		getchar();
		return NULL;
	}

    fseek (hFile, 0, SEEK_END);
    long lSize = ftell (hFile);
    rewind (hFile);

    size_t ullNum = lSize;
    char* pos = (char*) malloc (sizeof (char) * ullNum);
    assert (pos != NULL);

    fread (pos, sizeof (char), ullNum, hFile);
    fclose (hFile);
    *pullsize = ullNum;

    return pos;
}

void WriteFile (const char* szPath, char* pOutBuff, size_t size)
{
    assert ( (szPath != NULL) && (pOutBuff != NULL) && (size > 0));
    FILE* hFile = fopen (szPath, "a");
    assert (hFile != NULL);
    fwrite (pOutBuff, sizeof (char), size, hFile);
    fclose (hFile);
}

void Little_32to8(uint32_t source, char *dest)
{
	if (dest == NULL) return;

	dest[0] = (source >>  0) & 0xFF;
	dest[1] = (source >>  8) & 0xFF;
	dest[2] = (source >> 16) & 0xFF;
	dest[3] = (source >> 24) & 0xFF;
}

uint32_t U32SumCheck(uint8_t *dst, uint32_t size)
{
	uint32_t sum = 0;

	while( size-- )
    {
        sum += *dst++;
    }
	
	return sum;
}


int _tmain(int argc, _TCHAR* argv[])
{
    size_t FileSize = 0;
	uint32_t add;
	char a[4];
   //打开bin文件
	char* pBin = ReadFile(PATH_B, &FileSize);
	if((pBin == NULL) || (FileSize <= 0)) return 0;
	printf("GSP APP bin is %d
", FileSize);
   //算成累加和
	add = U32SumCheck((uint8_t *)pBin, FileSize);
	pBin = NULL;
	Little_32to8(add, a);
	WriteFile(PATH_B, a, 4);
	pBin = ReadFile(PATH_B, &FileSize);
	assert((pBin != NULL) && (FileSize > 0));
	printf("GSP APP bin add sum is %d
", FileSize);
   //追加到bin文件尾部

	//getchar();
	return 0;
}