data.c

来自「智能水表程序 来着互联网」· C语言 代码 · 共 30 行

//-----------------------------------------------------------------------------
// data.c
//-----------------------------------------------------------------------------
//
//-----------------------------------------------------------------------------
// Includes
//-----------------------------------------------------------------------------
#include <string.h>
#include "main/main.h"
#include "rfid/card.h"
#include "card/block.h"
#include "misc/general.h"
//-----------------------------------------------------------------------------
// Check Card Data Valid Routine
//-----------------------------------------------------------------------------
char Card_Data_Valid ( char * p )
{
	char i, sum, C;

	C = *( p + 7 );
	for ( sum = 0, i = 0; i < 16; i++ )
	{
		if ( i == 7 ) { i++; p++; }
		sum += 	*p++;
	}
	if ( sum != C ) return Fail( Data_Err );
	return TRUE;
}