Best way:
const uint8_t ACCESS_PSS [4] = {0x32,0xFD,0x6E,0x2D};
if(memcmp(&ResponseData[i+5], ACCESS_PSS, 4) == 0)
Alternative way (compound literal):
if(memcmp(&ResponseData[i+5], (uint8_t[4]){0x32,0xFD,0x6E,0x2D}, 4) == 0)
4
solved How assign #define with unsigned char