Buffer Aliasing and splitting in C

buffer_alias.c

#include <stdint.h>
#include <stdio.h>
#define MAX_PACKET_SIZE 64
// The main buffer we want to split alias
uint8_t EP2_buffer[128];
//Creating aliases for the main buffer split into two, each 64 bytes
uint8_t * cdc_In_Buffer = (uint8_t *) EP2_buffer; 
uint8_t * cdc_Out_Buffer = (uint8_t *) EP2_buffer+MAX_PACKET_SIZE; 

int main(void){
   
    // Put some sample data
    EP2_buffer[0] = 0;
    EP2_buffer[63] = 1;
    EP2_buffer[64] = 2;
    EP2_buffer[127] = 3;
    // Check if data is in its expected place
    printf("Buffer A0 %x\n", cdc_In_Buffer[0]);
    printf("Buffer A3 %x\n", cdc_In_Buffer[63]);
    printf("Buffer B0 %x\n", cdc_Out_Buffer[0]);
    printf("Buffer B63 %x\n", cdc_Out_Buffer[63]);
    return 0;
}