int a;

union

{

unsigned char uc[2];

int curve_point0;

}un_2b;

void BtoI(void)

{

un_2b.uc[0]=Rxdata_BUF1[4];< /p>

un_2b.uc[1]=Rxdata_BUF1[5];

a=un_2b.curve_point0;

}