add: priv->state = ERR_TXPENDING;
context: static u32 __bba_link_txsub1(){	LWIP_DEBUGF(NETIF_DEBUG,("__bba_link_txsub1(imm: %d)\n",cur_snd_immlen));	if(cur_snd_immlen) bba_outsdata(cur_snd_buffer+cur_snd_dmalen,cur_snd_immlen);	bba_deselect();	bba_out8(BBA_NCRA,((bba_in8(BBA_NCRA)|BBA_NCRA_ST1)));		//&~BBA_NCRA_ST0	EXI_Unlock(EXI_CHANNEL_0);	return ERR_OK;}