VCU118 minimal example for one SFP+ on HiTech Global HTG-FMC-X6QSFP28 FMC+

[dorotheapfeiffer]

Dear all,

I'm trying to implement a 10g SFP+ port with UDP stack on the VCU118. I started out with the fpga_10g example in the fpga_fmc_htg_6qsfp_25g folder. In the example the UDP stack is connected to the QSFP1 connector.
I thought it would be trivial to change the example to instead connect it to X0Y8 which is routed to the FMC card

#X0Y8
set_property -dict {LOC AT42} [get_ports {fmcp_qsfp1_tx_p[0]}]
set_property -dict {LOC AT43} [get_ports {fmcp_qsfp1_tx_n[0]}]
set_property -dict {LOC AR45} [get_ports {fmcp_qsfp1_rx_p[0]}]
set_property -dict {LOC AR46} [get_ports {fmcp_qsfp1_rx_n[0]}]
set_property -dict {LOC AK38} [get_ports fmcp_qsfp1_mgt_refclk_p]
set_property -dict {LOC AK39} [get_ports fmcp_qsfp1_mgt_refclk_n]

create_clock -period 6.400 -name fmcp_qsfp1_mgt_refclk [get_ports fmcp_qsfp1_mgt_refclk_p]

But I'm unable to do so. I connected the fmcp_qsfp1 signals instead of the qsfp1 signals to the eth_mac_10g_fifo and the UDP/IP components. The network card to which the SFP+ is connected shows correctly the speed of 10Gbs, but the UDP loopback does not work.

Could somebody please provide a minimal example?