ax_register
packetid = ax_register(ax->ax_ax, 0, axs->axs_id,
packetid = ax_register(ax->ax_ax, flags, axs->axs_id,
uint32_t ax_register(struct ax *, uint8_t, uint32_t,
uint32_t ax_register(struct ax *, uint8_t, uint32_t,