#define EOS_OK                      0
#define EOS_ERR                     -1
#define EOS_ERR_Q_FULL              -10


#define EOS_IRQ_PRIORITY_UART       1
#define EOS_IRQ_PRIORITY_I2S        1
#define EOS_IRQ_PRIORITY_NET_XCHG   1
#define EOS_IRQ_PRIORITY_UDP_RCVR   1