stm32H750B-DK demo板调试LAN8740无法ping通的原因？

最近在调试STM32750的lwip用cubeMX生成的工程。 但是一直ping不通，[15:54:24.555]收←◆sct calling h=cyclic_timer arg=080105e4
tcpip: ip_reass_tmr()
sys_timeout: 24001014 msecs=1000 handler=cyclic_timer arg=080105e4
sct calling h=cyclic_timer arg=080105fc
tcpip: dns_tmr()
dns_tmr: dns_check_entries
sys_timeout: 24000fec msecs=1000 handler=cyclic_timer arg=080105fc
sct calling h=cyclic_timer arg=080105f0
tcpip: etharp_tmr()
etharp_timer
sys_timeout: 24001000 msecs=1000 handler=cyclic_timer arg=080105f0
LWIP
dns_init: initializing
sys_timeout: 24001014 msecs=1000 handler=cyclic_timer arg=080105e4
sys_timeout: 24001000 msecs=1000 handler=cyclic_timer arg=080105f0
sys_timeout: 24000fec msecs=1000 handler=cyclic_timer arg=080105fc
netif: netmask of interface �� set to 255.255.255.0
netif: GW address of interface �� set to 192.168.1.1
netif_set_ipaddr: netif address being changed
netif: IP address of interface �� set to 192.168.1.35

[15:54:26.596]收←◆etharp_request: sending ARP request.
pbuf_alloc(length=28)
pbuf_alloc(length=28) == 30044008
etharp_raw: sending raw ARP packet.
pbuf_header: old 30044028 new 3004401a (14)
ethernet_output: sending packet 30044008
pbuf_free(30044008)
pbuf_free: deallocating 30044008
netif: added interface st IP addr 192.168.1.35 netmask 255.255.255.0 gw 192.168.1.1
netif: setting default interface st
sct calling h=cyclic_timer arg=080105e4
tcpip: ip_reass_tmr()
sys_timeout: 24001014 msecs=1000 handler=cyclic_timer arg=080105e4
sct calling h=cyclic_timer arg=080105f0
tcpip: etharp_tmr()
etharp_timer
sys_timeout: 24001000 msecs=1000 handler=cyclic_timer arg=080105f0
sct calling h=cyclic_timer arg=080105fc
tcpip: dns_tmr()
dns_tmr: dns_check_entries
sys_timeout: 24000fec msecs=1000 handler=cyclic_timer arg=080105fc

[15:54:27.664]收←◆sct calling h=cyclic_timer arg=080105fc
tcpip: dns_tmr()
dns_tmr: dns_check_entries
sys_timeout: 24000fec msecs=1000 handler=cyclic_timer arg=080105fc
sct calling h=cyclic_timer arg=080105e4
tcpip: ip_reass_tmr()
sys_timeout: 24001014 msecs=1000 handler=cyclic_timer arg=080105e4