/* : BT controller callback function, to transfer data packet to upper controller is ready to receive command  */
static int host_rcv_pkt(uint8_t *data, uint16_t len)
/* : BT controller callback function, to transfer data packet to upper controller is ready to receive command  */
static int host_rcv_pkt(uint8_t *data, uint16_t len)
{
    printf("host rcv pkt: ");
    for (uint16_t i = 0; i < len; i++) {
        printf("%02x", data[i]);
    }
    printf("\n");
    return 0;
}