diff options
Diffstat (limited to 'libhw_cr/w5500.c')
| -rw-r--r-- | libhw_cr/w5500.c | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/libhw_cr/w5500.c b/libhw_cr/w5500.c index b7c2ad1..c318819 100644 --- a/libhw_cr/w5500.c +++ b/libhw_cr/w5500.c @@ -8,6 +8,7 @@ * https://github.com/Wiznet/ioLibrary_Driver/blob/b981401e7f3d07015619adf44c13998e13e777f9/Ethernet/W5500/w5500.h * https://github.com/Wiznet/ioLibrary_Driver/blob/b981401e7f3d07015619adf44c13998e13e777f9/Ethernet/W5500/w5500.c * https://github.com/Wiznet/ioLibrary_Driver/blob/b981401e7f3d07015619adf44c13998e13e777f9/Ethernet/socket.c + * https://github.com/Wiznet/ioLibrary_Driver/blob/b981401e7f3d07015619adf44c13998e13e777f9/Internet/DHCP/dhcp.c * * Copyright (c) 2013, WIZnet Co., LTD. * All rights reserved. @@ -67,6 +68,8 @@ * SPDX-License-Identifier: MIT */ +#include <string.h> /* for memcmp() */ + /* TODO: Write a <libhw/generic/gpio.h> to avoid w5500.c being * pico-sdk-specific. */ #include "rp2040_gpioirq.h" @@ -545,6 +548,22 @@ static lo_interface net_packet_conn w5500_if_udp_conn(struct w5500 *chip, uint16 return lo_box_w5500_udp_as_net_packet_conn(socket); } +static bool w5500_if_arp_ping(struct w5500 *chip, struct net_ip4_addr addr) { + /* FIXME: This arp_ping implementation is really bad (and + * assumes that a UDP socket is open, which is "safe" because + * I only use it from inside of a DHCP client). */ + assert(chip); + struct _w5500_socket *sock = NULL; + for (size_t i = 0; i < LM_ARRAY_LEN(chip->sockets) && !sock; i++) { + if (chip->sockets[i].mode == W5500_MODE_UDP) + sock = &chip->sockets[i]; + } + assert(sock); + ssize_t v = w5500_udp_sendto(sock, "BOGUS_PACKET_TO_TRIGGER_AN_ARP", 17, addr, 5000); + log_debugln("arp_ping => ", v); + return v != -NET_EARP_TIMEOUT; +} + /* tcp_listener methods *******************************************************/ static lo_interface net_stream_conn w5500_tcplist_accept(struct _w5500_socket *socket) { |