uart1 IO

bsp_z7/lwip/netif/xemacpsif_dma.c

@@ -498,6 +498,8 @@ void setup_rx_bds(xemacpsif_s *xemacpsif, XEmacPs_BdRing *rxring)
 
 void emacps_recv_handler(void *arg)
 {
+	outbyte('D');
+
 	struct pbuf *p;
 	XEmacPs_Bd *rxbdset, *curbdptr;
 	struct xemac_s *xemac;
@@ -585,7 +587,7 @@ void emacps_recv_handler(void *arg)
 	sys_sem_signal(&xemac->sem_rx_data_available);
 	xInsideISR--;
 #endif
-
+	outbyte('M');
 	return;
 }