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authorClyne Sullivan <clyne@bitgloo.com>2021-01-22 21:43:36 -0500
committerClyne Sullivan <clyne@bitgloo.com>2021-01-22 21:43:36 -0500
commit48026bb824fd2d9cfb00ecd040db6ef3a416bae9 (patch)
treec14713aedfe78ee8b34f2e1252408782e2e2ff5d /ChibiOS_20.3.2/os/various/lwip_bindings
parente080a26651f90c88176140d63a74c93c2f4041a2 (diff)
upload initial port
Diffstat (limited to 'ChibiOS_20.3.2/os/various/lwip_bindings')
-rw-r--r--ChibiOS_20.3.2/os/various/lwip_bindings/arch/cc.h89
-rw-r--r--ChibiOS_20.3.2/os/various/lwip_bindings/arch/sys_arch.c239
-rw-r--r--ChibiOS_20.3.2/os/various/lwip_bindings/arch/sys_arch.h68
-rw-r--r--ChibiOS_20.3.2/os/various/lwip_bindings/lwip.mk23
-rw-r--r--ChibiOS_20.3.2/os/various/lwip_bindings/lwipthread.c530
-rw-r--r--ChibiOS_20.3.2/os/various/lwip_bindings/lwipthread.h275
-rw-r--r--ChibiOS_20.3.2/os/various/lwip_bindings/readme.txt6
-rw-r--r--ChibiOS_20.3.2/os/various/lwip_bindings/static_lwipopts.h42
8 files changed, 1272 insertions, 0 deletions
diff --git a/ChibiOS_20.3.2/os/various/lwip_bindings/arch/cc.h b/ChibiOS_20.3.2/os/various/lwip_bindings/arch/cc.h
new file mode 100644
index 0000000..5258a84
--- /dev/null
+++ b/ChibiOS_20.3.2/os/various/lwip_bindings/arch/cc.h
@@ -0,0 +1,89 @@
+/*
+ ChibiOS - Copyright (C) 2006..2018 Giovanni Di Sirio
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+*/
+/*
+ * **** This file incorporates work covered by the following copyright and ****
+ * **** permission notice: ****
+ *
+ * Copyright (c) 2001-2004 Swedish Institute of Computer Science.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification,
+ * are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ * 3. The name of the author may not be used to endorse or promote products
+ * derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
+ * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
+ * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
+ * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
+ * OF SUCH DAMAGE.
+ *
+ * This file is part of the lwIP TCP/IP stack.
+ *
+ * Author: Adam Dunkels <adam@sics.se>
+ *
+ */
+
+#ifndef __CC_H__
+#define __CC_H__
+
+#include <hal.h>
+
+/* Use errno provided by system. */
+#define LWIP_ERRNO_INCLUDE <errno.h>
+
+/**
+ * @brief Use system provided struct timeval by default.
+ */
+#ifndef LWIP_TIMEVAL_PRIVATE
+#define LWIP_TIMEVAL_PRIVATE 0
+#include <sys/time.h>
+#endif
+
+/**
+ * @brief Use a no-op diagnostic output macro by default.
+ */
+#if !defined(LWIP_PLATFORM_DIAG)
+#define LWIP_PLATFORM_DIAG(x)
+#endif
+
+/**
+ * @brief Halt the system on lwIP assert failure by default.
+ */
+#if !defined(LWIP_PLATFORM_ASSERT)
+#define LWIP_PLATFORM_ASSERT(x) osalSysHalt(x)
+#endif
+
+/**
+ * @brief The NETIF API is required by lwipthread.
+ */
+#ifdef LWIP_NETIF_API
+#undef LWIP_NETIF_API
+#endif
+#define LWIP_NETIF_API 1
+
+#endif /* __CC_H__ */
diff --git a/ChibiOS_20.3.2/os/various/lwip_bindings/arch/sys_arch.c b/ChibiOS_20.3.2/os/various/lwip_bindings/arch/sys_arch.c
new file mode 100644
index 0000000..7a7d5ea
--- /dev/null
+++ b/ChibiOS_20.3.2/os/various/lwip_bindings/arch/sys_arch.c
@@ -0,0 +1,239 @@
+/*
+ ChibiOS - Copyright (C) 2006..2018 Giovanni Di Sirio
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+*/
+/*
+ * **** This file incorporates work covered by the following copyright and ****
+ * **** permission notice: ****
+ *
+ * Copyright (c) 2001-2004 Swedish Institute of Computer Science.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification,
+ * are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ * 3. The name of the author may not be used to endorse or promote products
+ * derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
+ * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
+ * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
+ * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
+ * OF SUCH DAMAGE.
+ *
+ * This file is part of the lwIP TCP/IP stack.
+ *
+ * Author: Adam Dunkels <adam@sics.se>
+ *
+ */
+
+/*
+ * See http://lwip.wikia.com/wiki/Porting_for_an_OS for instructions.
+ */
+
+#include "hal.h"
+
+#include "lwip/opt.h"
+#include "lwip/mem.h"
+#include "lwip/sys.h"
+#include "lwip/stats.h"
+
+#include "arch/cc.h"
+#include "arch/sys_arch.h"
+
+void sys_init(void) {
+
+}
+
+err_t sys_sem_new(sys_sem_t *sem, u8_t count) {
+
+ *sem = chHeapAlloc(NULL, sizeof(semaphore_t));
+ if (*sem == 0) {
+ SYS_STATS_INC(sem.err);
+ return ERR_MEM;
+ }
+ else {
+ chSemObjectInit(*sem, (cnt_t)count);
+ SYS_STATS_INC_USED(sem);
+ return ERR_OK;
+ }
+}
+
+void sys_sem_free(sys_sem_t *sem) {
+
+ chHeapFree(*sem);
+ *sem = SYS_SEM_NULL;
+ SYS_STATS_DEC(sem.used);
+}
+
+void sys_sem_signal(sys_sem_t *sem) {
+
+ chSemSignal(*sem);
+}
+
+/* CHIBIOS FIX: specific variant of this call to be called from within
+ a lock.*/
+void sys_sem_signal_S(sys_sem_t *sem) {
+
+ chSemSignalI(*sem);
+ chSchRescheduleS();
+}
+
+u32_t sys_arch_sem_wait(sys_sem_t *sem, u32_t timeout) {
+ systime_t start;
+ sysinterval_t tmo, remaining;
+
+ chSysLock();
+ tmo = timeout > 0 ? TIME_MS2I((time_msecs_t)timeout) : TIME_INFINITE;
+ start = chVTGetSystemTimeX();
+ if (chSemWaitTimeoutS(*sem, tmo) != MSG_OK) {
+ chSysUnlock();
+ return SYS_ARCH_TIMEOUT;
+ }
+ remaining = chTimeDiffX(start, chVTGetSystemTimeX());
+ chSysUnlock();
+ return (u32_t)TIME_I2MS(remaining);
+}
+
+int sys_sem_valid(sys_sem_t *sem) {
+ return *sem != SYS_SEM_NULL;
+}
+
+// typically called within lwIP after freeing a semaphore
+// to make sure the pointer is not left pointing to invalid data
+void sys_sem_set_invalid(sys_sem_t *sem) {
+ *sem = SYS_SEM_NULL;
+}
+
+err_t sys_mbox_new(sys_mbox_t *mbox, int size) {
+
+ *mbox = chHeapAlloc(NULL, sizeof(mailbox_t) + sizeof(msg_t) * size);
+ if (*mbox == 0) {
+ SYS_STATS_INC(mbox.err);
+ return ERR_MEM;
+ }
+ else {
+ chMBObjectInit(*mbox, (void *)(((uint8_t *)*mbox) + sizeof(mailbox_t)), size);
+ SYS_STATS_INC(mbox.used);
+ return ERR_OK;
+ }
+}
+
+void sys_mbox_free(sys_mbox_t *mbox) {
+ cnt_t tmpcnt;
+
+ chSysLock();
+ tmpcnt = chMBGetUsedCountI(*mbox);
+ chSysUnlock();
+
+ if (tmpcnt != 0) {
+ // If there are messages still present in the mailbox when the mailbox
+ // is deallocated, it is an indication of a programming error in lwIP
+ // and the developer should be notified.
+ SYS_STATS_INC(mbox.err);
+ chMBReset(*mbox);
+ }
+ chHeapFree(*mbox);
+ *mbox = SYS_MBOX_NULL;
+ SYS_STATS_DEC(mbox.used);
+}
+
+void sys_mbox_post(sys_mbox_t *mbox, void *msg) {
+
+ chMBPostTimeout(*mbox, (msg_t)msg, TIME_INFINITE);
+}
+
+err_t sys_mbox_trypost(sys_mbox_t *mbox, void *msg) {
+
+ if (chMBPostTimeout(*mbox, (msg_t)msg, TIME_IMMEDIATE) == MSG_TIMEOUT) {
+ SYS_STATS_INC(mbox.err);
+ return ERR_MEM;
+ }
+ return ERR_OK;
+}
+
+u32_t sys_arch_mbox_fetch(sys_mbox_t *mbox, void **msg, u32_t timeout) {
+ systime_t start;
+ sysinterval_t tmo, remaining;
+
+ chSysLock();
+ tmo = timeout > 0 ? TIME_MS2I((time_msecs_t)timeout) : TIME_INFINITE;
+ start = chVTGetSystemTimeX();
+ if (chMBFetchTimeoutS(*mbox, (msg_t *)msg, tmo) != MSG_OK) {
+ chSysUnlock();
+ return SYS_ARCH_TIMEOUT;
+ }
+ remaining = chTimeDiffX(start, chVTGetSystemTimeX());
+ chSysUnlock();
+ return (u32_t)TIME_I2MS(remaining);
+}
+
+u32_t sys_arch_mbox_tryfetch(sys_mbox_t *mbox, void **msg) {
+
+ if (chMBFetchTimeout(*mbox, (msg_t *)msg, TIME_IMMEDIATE) == MSG_TIMEOUT)
+ return SYS_MBOX_EMPTY;
+ return 0;
+}
+
+int sys_mbox_valid(sys_mbox_t *mbox) {
+ return *mbox != SYS_MBOX_NULL;
+}
+
+// typically called within lwIP after freeing an mbox
+// to make sure the pointer is not left pointing to invalid data
+void sys_mbox_set_invalid(sys_mbox_t *mbox) {
+ *mbox = SYS_MBOX_NULL;
+}
+
+sys_thread_t sys_thread_new(const char *name, lwip_thread_fn thread,
+ void *arg, int stacksize, int prio) {
+ thread_t *tp;
+
+ tp = chThdCreateFromHeap(NULL, THD_WORKING_AREA_SIZE(stacksize),
+ name, prio, (tfunc_t)thread, arg);
+ return (sys_thread_t)tp;
+}
+
+sys_prot_t sys_arch_protect(void) {
+
+ return chSysGetStatusAndLockX();
+}
+
+void sys_arch_unprotect(sys_prot_t pval) {
+
+ chSysRestoreStatusX((syssts_t)pval);
+}
+
+u32_t sys_now(void) {
+
+#if OSAL_ST_FREQUENCY == 1000
+ return (u32_t)chVTGetSystemTimeX();
+#elif (OSAL_ST_FREQUENCY / 1000) >= 1 && (OSAL_ST_FREQUENCY % 1000) == 0
+ return ((u32_t)chVTGetSystemTimeX() - 1) / (OSAL_ST_FREQUENCY / 1000) + 1;
+#elif (1000 / OSAL_ST_FREQUENCY) >= 1 && (1000 % OSAL_ST_FREQUENCY) == 0
+ return ((u32_t)chVTGetSystemTimeX() - 1) * (1000 / OSAL_ST_FREQUENCY) + 1;
+#else
+ return (u32_t)(((u64_t)(chVTGetSystemTimeX() - 1) * 1000) / OSAL_ST_FREQUENCY) + 1;
+#endif
+}
diff --git a/ChibiOS_20.3.2/os/various/lwip_bindings/arch/sys_arch.h b/ChibiOS_20.3.2/os/various/lwip_bindings/arch/sys_arch.h
new file mode 100644
index 0000000..bbb3531
--- /dev/null
+++ b/ChibiOS_20.3.2/os/various/lwip_bindings/arch/sys_arch.h
@@ -0,0 +1,68 @@
+/*
+ ChibiOS - Copyright (C) 2006..2018 Giovanni Di Sirio
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+*/
+/*
+ * **** This file incorporates work covered by the following copyright and ****
+ * **** permission notice: ****
+ *
+ * Copyright (c) 2001-2004 Swedish Institute of Computer Science.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification,
+ * are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ * 3. The name of the author may not be used to endorse or promote products
+ * derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
+ * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
+ * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
+ * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
+ * OF SUCH DAMAGE.
+ *
+ * This file is part of the lwIP TCP/IP stack.
+ *
+ * Author: Adam Dunkels <adam@sics.se>
+ *
+ */
+
+#include <hal.h>
+
+#ifndef __SYS_ARCH_H__
+#define __SYS_ARCH_H__
+
+typedef semaphore_t * sys_sem_t;
+typedef mailbox_t * sys_mbox_t;
+typedef thread_t * sys_thread_t;
+typedef syssts_t sys_prot_t;
+
+#define SYS_MBOX_NULL (mailbox_t *)0
+#define SYS_THREAD_NULL (thread_t *)0
+#define SYS_SEM_NULL (semaphore_t *)0
+
+/* let sys.h use binary semaphores for mutexes */
+#define LWIP_COMPAT_MUTEX 1
+
+#endif /* __SYS_ARCH_H__ */
diff --git a/ChibiOS_20.3.2/os/various/lwip_bindings/lwip.mk b/ChibiOS_20.3.2/os/various/lwip_bindings/lwip.mk
new file mode 100644
index 0000000..961e710
--- /dev/null
+++ b/ChibiOS_20.3.2/os/various/lwip_bindings/lwip.mk
@@ -0,0 +1,23 @@
+# List of the required lwIP files.
+LWIPDIR = $(CHIBIOS)/ext/lwip/src
+
+# The various blocks of files are outlined in Filelists.mk.
+include $(LWIPDIR)/Filelists.mk
+
+LWBINDSRC = \
+ $(CHIBIOS)/os/various/lwip_bindings/lwipthread.c \
+ $(CHIBIOS)/os/various/lwip_bindings/arch/sys_arch.c
+
+
+# Add blocks of files from Filelists.mk as required for enabled options
+LWSRC_REQUIRED = $(COREFILES) $(CORE4FILES) $(APIFILES) $(LWBINDSRC) $(NETIFFILES)
+LWSRC_EXTRAS ?= $(HTTPFILES)
+
+LWINC = \
+ $(CHIBIOS)/os/various/lwip_bindings \
+ $(LWIPDIR)/include
+
+# Shared variables
+ALLCSRC += $(LWSRC_REQUIRED) $(LWSRC_EXTRAS)
+ALLINC += $(LWINC) \
+ $(CHIBIOS)/os/various
diff --git a/ChibiOS_20.3.2/os/various/lwip_bindings/lwipthread.c b/ChibiOS_20.3.2/os/various/lwip_bindings/lwipthread.c
new file mode 100644
index 0000000..ee4303f
--- /dev/null
+++ b/ChibiOS_20.3.2/os/various/lwip_bindings/lwipthread.c
@@ -0,0 +1,530 @@
+/*
+ ChibiOS - Copyright (C) 2006..2018 Giovanni Di Sirio
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+*/
+/*
+ * **** This file incorporates work covered by the following copyright and ****
+ * **** permission notice: ****
+ *
+ * Copyright (c) 2001-2004 Swedish Institute of Computer Science.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification,
+ * are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ * 3. The name of the author may not be used to endorse or promote products
+ * derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
+ * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
+ * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
+ * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
+ * OF SUCH DAMAGE.
+ *
+ * This file is part of the lwIP TCP/IP stack.
+ *
+ * Author: Adam Dunkels <adam@sics.se>
+ *
+ */
+
+/**
+ * @file lwipthread.c
+ * @brief LWIP wrapper thread code.
+ * @addtogroup LWIP_THREAD
+ * @{
+ */
+
+#include "hal.h"
+#include "evtimer.h"
+
+#include "lwipthread.h"
+
+#include <lwip/opt.h>
+#include <lwip/def.h>
+#include <lwip/mem.h>
+#include <lwip/pbuf.h>
+#include <lwip/sys.h>
+#include <lwip/stats.h>
+#include <lwip/snmp.h>
+#include <lwip/tcpip.h>
+#include <netif/etharp.h>
+#include <lwip/netifapi.h>
+
+#if LWIP_DHCP
+#include <lwip/dhcp.h>
+#endif
+
+#if LWIP_AUTOIP
+#include <lwip/autoip.h>
+#endif
+
+#define PERIODIC_TIMER_ID 1
+#define FRAME_RECEIVED_ID 2
+
+/*
+ * Suspension point for initialization procedure.
+ */
+thread_reference_t lwip_trp = NULL;
+
+/*
+ * Stack area for the LWIP-MAC thread.
+ */
+static THD_WORKING_AREA(wa_lwip_thread, LWIP_THREAD_STACK_SIZE);
+
+/*
+ * Initialization.
+ */
+static void low_level_init(struct netif *netif) {
+ /* set MAC hardware address length */
+ netif->hwaddr_len = ETHARP_HWADDR_LEN;
+
+ /* maximum transfer unit */
+ netif->mtu = LWIP_NETIF_MTU;
+
+ /* device capabilities */
+ /* don't set NETIF_FLAG_ETHARP if this device is not an Ethernet one */
+ netif->flags = NETIF_FLAG_BROADCAST | NETIF_FLAG_ETHARP | NETIF_FLAG_LINK_UP;
+
+ /* Do whatever else is needed to initialize interface. */
+}
+
+/*
+ * This function does the actual transmission of the packet. The packet is
+ * contained in the pbuf that is passed to the function. This pbuf
+ * might be chained.
+ *
+ * @param netif the lwip network interface structure for this ethernetif
+ * @param p the MAC packet to send (e.g. IP packet including MAC addresses and type)
+ * @return ERR_OK if the packet could be sent
+ * an err_t value if the packet couldn't be sent
+ *
+ * @note Returning ERR_MEM here if a DMA queue of your MAC is full can lead to
+ * strange results. You might consider waiting for space in the DMA queue
+ * to become available since the stack doesn't retry to send a packet
+ * dropped because of memory failure (except for the TCP timers).
+ */
+static err_t low_level_output(struct netif *netif, struct pbuf *p) {
+ struct pbuf *q;
+ MACTransmitDescriptor td;
+
+ (void)netif;
+ if (macWaitTransmitDescriptor(&ETHD1, &td, TIME_MS2I(LWIP_SEND_TIMEOUT)) != MSG_OK)
+ return ERR_TIMEOUT;
+
+#if ETH_PAD_SIZE
+ pbuf_header(p, -ETH_PAD_SIZE); /* drop the padding word */
+#endif
+
+ /* Iterates through the pbuf chain. */
+ for(q = p; q != NULL; q = q->next)
+ macWriteTransmitDescriptor(&td, (uint8_t *)q->payload, (size_t)q->len);
+ macReleaseTransmitDescriptor(&td);
+
+ MIB2_STATS_NETIF_ADD(netif, ifoutoctets, p->tot_len);
+ if (((u8_t*)p->payload)[0] & 1) {
+ /* broadcast or multicast packet*/
+ MIB2_STATS_NETIF_INC(netif, ifoutnucastpkts);
+ }
+ else {
+ /* unicast packet */
+ MIB2_STATS_NETIF_INC(netif, ifoutucastpkts);
+ }
+ /* increase ifoutdiscards or ifouterrors on error */
+
+#if ETH_PAD_SIZE
+ pbuf_header(p, ETH_PAD_SIZE); /* reclaim the padding word */
+#endif
+
+ LINK_STATS_INC(link.xmit);
+
+ return ERR_OK;
+}
+
+/*
+ * Receives a frame.
+ * Allocates a pbuf and transfers the bytes of the incoming
+ * packet from the interface into the pbuf.
+ *
+ * @param netif the lwip network interface structure for this ethernetif
+ * @return a pbuf filled with the received packet (including MAC header)
+ * NULL on memory error
+ */
+static bool low_level_input(struct netif *netif, struct pbuf **pbuf) {
+ MACReceiveDescriptor rd;
+ struct pbuf *q;
+ u16_t len;
+
+ (void)netif;
+
+ osalDbgAssert(pbuf != NULL, "invalid null pointer");
+
+ if (macWaitReceiveDescriptor(&ETHD1, &rd, TIME_IMMEDIATE) != MSG_OK)
+ return false;
+
+ len = (u16_t)rd.size;
+
+#if ETH_PAD_SIZE
+ len += ETH_PAD_SIZE; /* allow room for Ethernet padding */
+#endif
+
+ /* We allocate a pbuf chain of pbufs from the pool. */
+ *pbuf = pbuf_alloc(PBUF_RAW, len, PBUF_POOL);
+
+ if (*pbuf != NULL) {
+#if ETH_PAD_SIZE
+ pbuf_header(*pbuf, -ETH_PAD_SIZE); /* drop the padding word */
+#endif
+
+ /* Iterates through the pbuf chain. */
+ for(q = *pbuf; q != NULL; q = q->next)
+ macReadReceiveDescriptor(&rd, (uint8_t *)q->payload, (size_t)q->len);
+ macReleaseReceiveDescriptor(&rd);
+
+ MIB2_STATS_NETIF_ADD(netif, ifinoctets, (*pbuf)->tot_len);
+
+ if (*(uint8_t *)((*pbuf)->payload) & 1) {
+ /* broadcast or multicast packet*/
+ MIB2_STATS_NETIF_INC(netif, ifinnucastpkts);
+ }
+ else {
+ /* unicast packet*/
+ MIB2_STATS_NETIF_INC(netif, ifinucastpkts);
+ }
+
+#if ETH_PAD_SIZE
+ pbuf_header(*pbuf, ETH_PAD_SIZE); /* reclaim the padding word */
+#endif
+
+ LINK_STATS_INC(link.recv);
+ }
+ else {
+ macReleaseReceiveDescriptor(&rd); // Drop packet
+ LINK_STATS_INC(link.memerr);
+ LINK_STATS_INC(link.drop);
+ MIB2_STATS_NETIF_INC(netif, ifindiscards);
+ }
+
+ return true;
+}
+
+/*
+ * Called at the beginning of the program to set up the
+ * network interface. It calls the function low_level_init() to do the
+ * actual setup of the hardware.
+ *
+ * This function should be passed as a parameter to netifapi_netif_add().
+ *
+ * @param netif the lwip network interface structure for this ethernetif
+ * @return ERR_OK if the loopif is initialised
+ * ERR_MEM if private data couldn't be allocated
+ * any other err_t on error
+ */
+static err_t ethernetif_init(struct netif *netif) {
+ osalDbgAssert((netif != NULL), "netif != NULL");
+
+ /*
+ * Initialize the snmp variables and counters inside the struct netif.
+ * The last argument should be replaced with your link speed, in units
+ * of bits per second.
+ */
+ MIB2_INIT_NETIF(netif, snmp_ifType_ethernet_csmacd, LWIP_LINK_SPEED);
+
+ netif->state = NULL;
+ netif->name[0] = LWIP_IFNAME0;
+ netif->name[1] = LWIP_IFNAME1;
+ /* We directly use etharp_output() here to save a function call.
+ * You can instead declare your own function an call etharp_output()
+ * from it if you have to do some checks before sending (e.g. if link
+ * is available...) */
+ netif->output = etharp_output;
+ netif->linkoutput = low_level_output;
+
+ /* initialize the hardware */
+ low_level_init(netif);
+
+ return ERR_OK;
+}
+
+static net_addr_mode_t addressMode;
+static ip4_addr_t ip, gateway, netmask;
+static struct netif thisif;
+
+void lwipDefaultLinkUpCB(void *p)
+{
+ struct netif *ifc = (struct netif*) p;
+ (void) ifc;
+#if LWIP_AUTOIP
+ if (addressMode == NET_ADDRESS_AUTO)
+ autoip_start(ifc);
+#endif
+#if LWIP_DHCP
+ if (addressMode == NET_ADDRESS_DHCP)
+ dhcp_start(ifc);
+#endif
+}
+
+void lwipDefaultLinkDownCB(void *p)
+{
+ struct netif *ifc = (struct netif*) p;
+ (void) ifc;
+#if LWIP_AUTOIP
+ if (addressMode == NET_ADDRESS_AUTO)
+ autoip_stop(ifc);
+#endif
+#if LWIP_DHCP
+ if (addressMode == NET_ADDRESS_DHCP)
+ dhcp_stop(ifc);
+#endif
+}
+
+/**
+ * @brief LWIP handling thread.
+ *
+ * @param[in] p pointer to a @p lwipthread_opts structure or @p NULL
+ * @return The function does not return.
+ */
+static THD_FUNCTION(lwip_thread, p) {
+ event_timer_t evt;
+ event_listener_t el0, el1;
+ static const MACConfig mac_config = {thisif.hwaddr};
+ err_t result;
+ tcpip_callback_fn link_up_cb = NULL;
+ tcpip_callback_fn link_down_cb = NULL;
+
+ chRegSetThreadName(LWIP_THREAD_NAME);
+
+ /* Initializes the thing.*/
+ tcpip_init(NULL, NULL);
+
+ /* TCP/IP parameters, runtime or compile time.*/
+ if (p) {
+ lwipthread_opts_t *opts = p;
+ unsigned i;
+
+ for (i = 0; i < 6; i++)
+ thisif.hwaddr[i] = opts->macaddress[i];
+ ip.addr = opts->address;
+ gateway.addr = opts->gateway;
+ netmask.addr = opts->netmask;
+ addressMode = opts->addrMode;
+#if LWIP_NETIF_HOSTNAME
+ thisif.hostname = opts->ourHostName;
+#endif
+ link_up_cb = opts->link_up_cb;
+ link_down_cb = opts->link_down_cb;
+ }
+ else {
+ thisif.hwaddr[0] = LWIP_ETHADDR_0;
+ thisif.hwaddr[1] = LWIP_ETHADDR_1;
+ thisif.hwaddr[2] = LWIP_ETHADDR_2;
+ thisif.hwaddr[3] = LWIP_ETHADDR_3;
+ thisif.hwaddr[4] = LWIP_ETHADDR_4;
+ thisif.hwaddr[5] = LWIP_ETHADDR_5;
+ LWIP_IPADDR(&ip);
+ LWIP_GATEWAY(&gateway);
+ LWIP_NETMASK(&netmask);
+#if LWIP_DHCP
+ addressMode = NET_ADDRESS_DHCP;
+#elif LWIP_AUTOIP
+ addressMode = NET_ADDRESS_AUTO;
+#else
+ addressMode = NET_ADDRESS_STATIC;
+#endif
+#if LWIP_NETIF_HOSTNAME
+ thisif.hostname = NULL;
+#endif
+ }
+
+ if (!link_up_cb)
+ link_up_cb = lwipDefaultLinkUpCB;
+ if (!link_down_cb)
+ link_down_cb = lwipDefaultLinkDownCB;
+
+#if LWIP_NETIF_HOSTNAME
+ if (thisif.hostname == NULL)
+ thisif.hostname = LWIP_NETIF_HOSTNAME_STRING;
+#endif
+
+ macStart(&ETHD1, &mac_config);
+
+ MIB2_INIT_NETIF(&thisif, snmp_ifType_ethernet_csmacd, 0);
+
+ /* Add interface. */
+ result = netifapi_netif_add(&thisif, &ip, &netmask, &gateway, NULL, ethernetif_init, tcpip_input);
+ if (result != ERR_OK)
+ {
+ chThdSleepMilliseconds(1000); // Give some time to print any other diagnostics.
+ osalSysHalt("netif_add error"); // Not sure what else we can do if an error occurs here.
+ };
+
+ netifapi_netif_set_default(&thisif);
+ netifapi_netif_set_up(&thisif);
+
+ /* Setup event sources.*/
+ evtObjectInit(&evt, LWIP_LINK_POLL_INTERVAL);
+ evtStart(&evt);
+ chEvtRegisterMask(&evt.et_es, &el0, PERIODIC_TIMER_ID);
+ chEvtRegisterMask(macGetReceiveEventSource(&ETHD1), &el1, FRAME_RECEIVED_ID);
+ chEvtAddEvents(PERIODIC_TIMER_ID | FRAME_RECEIVED_ID);
+
+ /* Resumes the caller and goes to the final priority.*/
+ chThdResume(&lwip_trp, MSG_OK);
+ chThdSetPriority(LWIP_THREAD_PRIORITY);
+
+ while (true) {
+ eventmask_t mask = chEvtWaitAny(ALL_EVENTS);
+ if (mask & PERIODIC_TIMER_ID) {
+ bool current_link_status = macPollLinkStatus(&ETHD1);
+ if (current_link_status != netif_is_link_up(&thisif)) {
+ if (current_link_status) {
+ tcpip_callback_with_block((tcpip_callback_fn) netif_set_link_up,
+ &thisif, 0);
+ tcpip_callback_with_block(link_up_cb, &thisif, 0);
+ }
+ else {
+ tcpip_callback_with_block((tcpip_callback_fn) netif_set_link_down,
+ &thisif, 0);
+ tcpip_callback_with_block(link_down_cb, &thisif, 0);
+ }
+ }
+ }
+
+ if (mask & FRAME_RECEIVED_ID) {
+ struct pbuf *p;
+ while (low_level_input(&thisif, &p)) {
+ if (p != NULL) {
+ struct eth_hdr *ethhdr = p->payload;
+ switch (htons(ethhdr->type)) {
+ /* IP or ARP packet? */
+ case ETHTYPE_IP:
+ case ETHTYPE_ARP:
+ /* full packet send to tcpip_thread to process */
+ if (thisif.input(p, &thisif) == ERR_OK)
+ break;
+ LWIP_DEBUGF(NETIF_DEBUG, ("ethernetif_input: IP input error\n"));
+ /* Falls through */
+ default:
+ pbuf_free(p);
+ }
+ }
+ }
+ }
+ }
+}
+
+/**
+ * @brief Initializes the lwIP subsystem.
+ * @note The function exits after the initialization is finished.
+ *
+ * @param[in] opts pointer to the configuration structure, if @p NULL
+ * then the static configuration is used.
+ */
+void lwipInit(const lwipthread_opts_t *opts) {
+
+ /* Creating the lwIP thread (it changes priority internally).*/
+ chThdCreateStatic(wa_lwip_thread, sizeof (wa_lwip_thread),
+ chThdGetPriorityX() - 1, lwip_thread, (void *)opts);
+
+ /* Waiting for the lwIP thread complete initialization. Note,
+ this thread reaches the thread reference object first because
+ the relative priorities.*/
+ chSysLock();
+ chThdSuspendS(&lwip_trp);
+ chSysUnlock();
+}
+
+typedef struct lwip_reconf_params {
+ const lwipreconf_opts_t *opts;
+ semaphore_t completion;
+} lwip_reconf_params_t;
+
+static void do_reconfigure(void *p)
+{
+ lwip_reconf_params_t *reconf = (lwip_reconf_params_t*) p;
+
+ switch (addressMode) {
+#if LWIP_DHCP
+ case NET_ADDRESS_DHCP: {
+ if (netif_is_up(&thisif))
+ dhcp_stop(&thisif);
+ break;
+ }
+#endif
+ case NET_ADDRESS_STATIC: {
+ ip4_addr_t zero = { 0 };
+ netif_set_ipaddr(&thisif, &zero);
+ netif_set_netmask(&thisif, &zero);
+ netif_set_gw(&thisif, &zero);
+ break;
+ }
+#if LWIP_AUTOIP
+ case NET_ADDRESS_AUTO: {
+ if (netif_is_up(&thisif))
+ autoip_stop(&thisif);
+ break;
+ }
+#endif
+ }
+
+ ip.addr = reconf->opts->address;
+ gateway.addr = reconf->opts->gateway;
+ netmask.addr = reconf->opts->netmask;
+ addressMode = reconf->opts->addrMode;
+
+ switch (addressMode) {
+#if LWIP_DHCP
+ case NET_ADDRESS_DHCP: {
+ if (netif_is_up(&thisif))
+ dhcp_start(&thisif);
+ break;
+ }
+#endif
+ case NET_ADDRESS_STATIC: {
+ netif_set_ipaddr(&thisif, &ip);
+ netif_set_netmask(&thisif, &netmask);
+ netif_set_gw(&thisif, &gateway);
+ break;
+ }
+#if LWIP_AUTOIP
+ case NET_ADDRESS_AUTO: {
+ if (netif_is_up(&thisif))
+ autoip_start(&thisif);
+ break;
+ }
+#endif
+ }
+
+ chSemSignal(&reconf->completion);
+}
+
+void lwipReconfigure(const lwipreconf_opts_t *opts)
+{
+ lwip_reconf_params_t params;
+ params.opts = opts;
+ chSemObjectInit(&params.completion, 0);
+ tcpip_callback_with_block(do_reconfigure, &params, 0);
+ chSemWait(&params.completion);
+}
+
+/** @} */
diff --git a/ChibiOS_20.3.2/os/various/lwip_bindings/lwipthread.h b/ChibiOS_20.3.2/os/various/lwip_bindings/lwipthread.h
new file mode 100644
index 0000000..b40d05f
--- /dev/null
+++ b/ChibiOS_20.3.2/os/various/lwip_bindings/lwipthread.h
@@ -0,0 +1,275 @@
+/*
+ ChibiOS - Copyright (C) 2006..2018 Giovanni Di Sirio
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+*/
+
+/**
+ * @file lwipthread.h
+ * @brief LWIP wrapper thread macros and structures.
+ * @addtogroup LWIP_THREAD
+ * @{
+ */
+
+#ifndef LWIPTHREAD_H
+#define LWIPTHREAD_H
+
+#include <lwip/opt.h>
+
+/**
+ * @brief lwIP default network interface maximum transmission unit (MTU).
+ */
+#if !defined(LWIP_NETIF_MTU) || defined(__DOXYGEN__)
+#define LWIP_NETIF_MTU 1500
+#endif
+
+/**
+ * @brief Default network interface hostname.
+ */
+#if !defined(LWIP_NETIF_HOSTNAME_STRING) || defined(__DOXYGEN__)
+#define LWIP_NETIF_HOSTNAME_STRING "lwip"
+#endif
+
+/**
+ * @brief Default network interface hostname.
+ */
+#if !defined(LWIP_THREAD_NAME) || defined(__DOXYGEN__)
+#define LWIP_THREAD_NAME "lwipthread"
+#endif
+
+/**
+ * @brief lwIP thread priority.
+ */
+#ifndef LWIP_THREAD_PRIORITY
+#define LWIP_THREAD_PRIORITY LOWPRIO
+#endif
+
+/**
+ * @brief lwIP thread stack size.
+ */
+#if !defined(LWIP_THREAD_STACK_SIZE) || defined(__DOXYGEN__)
+#define LWIP_THREAD_STACK_SIZE 672
+#endif
+
+/**
+ * @brief Link poll interval.
+ */
+#if !defined(LWIP_LINK_POLL_INTERVAL) || defined(__DOXYGEN__)
+#define LWIP_LINK_POLL_INTERVAL TIME_S2I(5)
+#endif
+
+/**
+ * @brief IP Address.
+ */
+#if !defined(LWIP_IPADDR) || defined(__DOXYGEN__)
+#define LWIP_IPADDR(p) IP4_ADDR(p, 192, 168, 1, 10)
+#endif
+
+/**
+ * @brief IP Gateway.
+ */
+#if !defined(LWIP_GATEWAY) || defined(__DOXYGEN__)
+#define LWIP_GATEWAY(p) IP4_ADDR(p, 192, 168, 1, 1)
+#endif
+
+/**
+ * @brief IP netmask.
+ */
+#if !defined(LWIP_NETMASK) || defined(__DOXYGEN__)
+#define LWIP_NETMASK(p) IP4_ADDR(p, 255, 255, 255, 0)
+#endif
+
+/**
+ * @brief Transmission timeout.
+ */
+#if !defined(LWIP_SEND_TIMEOUT) || defined(__DOXYGEN__)
+#define LWIP_SEND_TIMEOUT 50
+#endif
+
+/**
+ * @brief Link speed.
+ */
+#if !defined(LWIP_LINK_SPEED) || defined(__DOXYGEN__)
+#define LWIP_LINK_SPEED 100000000
+#endif
+
+/**
+ * @brief MAC Address byte 0.
+ */
+#if !defined(LWIP_ETHADDR_0) || defined(__DOXYGEN__)
+#define LWIP_ETHADDR_0 0xC2
+#endif
+
+/**
+ * @brief MAC Address byte 1.
+ */
+#if !defined(LWIP_ETHADDR_1) || defined(__DOXYGEN__)
+#define LWIP_ETHADDR_1 0xAF
+#endif
+
+/**
+ * @brief MAC Address byte 2.
+ */
+#if !defined(LWIP_ETHADDR_2) || defined(__DOXYGEN__)
+#define LWIP_ETHADDR_2 0x51
+#endif
+
+/**
+ * @brief MAC Address byte 3.
+ */
+#if !defined(LWIP_ETHADDR_3) || defined(__DOXYGEN__)
+#define LWIP_ETHADDR_3 0x03
+#endif
+
+/**
+ * @brief MAC Address byte 4.
+ */
+#if !defined(LWIP_ETHADDR_4) || defined(__DOXYGEN__)
+#define LWIP_ETHADDR_4 0xCF
+#endif
+
+/**
+ * @brief MAC Address byte 5.
+ */
+#if !defined(LWIP_ETHADDR_5) || defined(__DOXYGEN__)
+#define LWIP_ETHADDR_5 0x46
+#endif
+
+/**
+ * @brief Interface name byte 0.
+ */
+#if !defined(LWIP_IFNAME0) || defined(__DOXYGEN__)
+#define LWIP_IFNAME0 'm'
+#endif
+
+/**
+ * @brief Interface name byte 1.
+ */
+#if !defined(LWIP_IFNAME1) || defined(__DOXYGEN__)
+#define LWIP_IFNAME1 's'
+#endif
+
+/**
+ * @brief Utility macro to define an IPv4 address.
+ *
+ * @note Within the networking subsystem, IPv4 network addresses are
+ * stored with LS byte of network address in MS byte of unsigned int.
+ */
+#if BYTE_ORDER == LITTLE_ENDIAN
+#define IP4_ADDR_VALUE(a,b,c,d) \
+ (((u32_t)((d) & 0xff) << 24) | \
+ ((u32_t)((c) & 0xff) << 16) | \
+ ((u32_t)((b) & 0xff) << 8) | \
+ (u32_t)((a) & 0xff))
+#else
+#define IP4_ADDR_VALUE(a,b,c,d) \
+ (((u32_t)((a) & 0xff) << 24) | \
+ ((u32_t)((b) & 0xff) << 16) | \
+ ((u32_t)((c) & 0xff) << 8) | \
+ (u32_t)((d) & 0xff))
+#endif
+
+/**
+ * @brief Startup network assigning modes.
+ */
+typedef enum {
+#if LWIP_DHCP || defined(__DOXYGEN__)
+ /**
+ * @brief Assign a DHCP given address.
+ */
+ NET_ADDRESS_DHCP = 1,
+#endif
+ /**
+ * @brief Assign a statically IPv4 address.
+ */
+ NET_ADDRESS_STATIC = 2,
+#if LWIP_AUTOIP || defined(__DOXYGEN__)
+ /**
+ * @brief Assign an IPv4 link-Local address.
+ */
+ NET_ADDRESS_AUTO = 3
+#endif
+} net_addr_mode_t;
+
+/**
+ * @brief Runtime TCP/IP settings.
+ */
+typedef struct lwipthread_opts {
+ /**
+ * @brief Pointer to MAC address as an array of 6 unsigned bytes.
+ */
+ uint8_t *macaddress;
+ /**
+ * @brief Network address as 32-bit unsigned integer.
+ */
+ uint32_t address;
+ /**
+ * @brief Network subnet mask as 32-bit unsigned integer.
+ */
+ uint32_t netmask;
+ /**
+ * @brief Network gateway as 32-bit unsigned integer.
+ */
+ uint32_t gateway;
+ /**
+ * @brief Startup network addressing mode - static, DHCP, auto.
+ */
+ net_addr_mode_t addrMode;
+ /**
+ * @brief Host name. If NULL, a default string is used.
+ * @note Not checked for validity. In particular, spaces not allowed.
+ */
+#if LWIP_NETIF_HOSTNAME || defined(__DOXYGEN__)
+ const char *ourHostName;
+#endif
+ /**
+ * @brief Link up callback.
+ *
+ * @note Called from the tcpip thread when the link goes up.
+ * Can be NULL to default to lwipDefaultLinkUpCB.
+ */
+ void (*link_up_cb)(void*);
+ /**
+ * @brief Link down callback.
+ *
+ * @note Called from the tcpip thread when the link goes down.
+ * Can be NULL to default to lwipDefaultLinkDownCB.
+ */
+ void (*link_down_cb)(void*);
+} lwipthread_opts_t;
+
+/**
+ * @brief Parameters for lwipReconfigure.
+ * @note Same meaning as in lwipthread_opts_t.
+ */
+typedef struct lwipreconf_opts {
+ uint32_t address;
+ uint32_t netmask;
+ uint32_t gateway;
+ net_addr_mode_t addrMode;
+} lwipreconf_opts_t;
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+ void lwipDefaultLinkUpCB(void *p);
+ void lwipDefaultLinkDownCB(void *p);
+ void lwipInit(const lwipthread_opts_t *opts);
+ void lwipReconfigure(const lwipreconf_opts_t *opts);
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* LWIPTHREAD_H */
+
+/** @} */
diff --git a/ChibiOS_20.3.2/os/various/lwip_bindings/readme.txt b/ChibiOS_20.3.2/os/various/lwip_bindings/readme.txt
new file mode 100644
index 0000000..07544e2
--- /dev/null
+++ b/ChibiOS_20.3.2/os/various/lwip_bindings/readme.txt
@@ -0,0 +1,6 @@
+This directory contains the ChibiOS "official" bindings with the lwIP
+TCP/IP stack: http://savannah.nongnu.org/projects/lwip
+
+In order to use lwIP within ChibiOS/RT project, unzip lwIP under
+./ext/lwip then include $(CHIBIOS)/os/various/lwip_bindings/lwip.mk
+in your makefile.
diff --git a/ChibiOS_20.3.2/os/various/lwip_bindings/static_lwipopts.h b/ChibiOS_20.3.2/os/various/lwip_bindings/static_lwipopts.h
new file mode 100644
index 0000000..7baa387
--- /dev/null
+++ b/ChibiOS_20.3.2/os/various/lwip_bindings/static_lwipopts.h
@@ -0,0 +1,42 @@
+/*
+ ChibiOS - Copyright (C) 2006..2018 Giovanni Di Sirio
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+*/
+
+/**
+ * @file static_lwipopts.h
+ *
+ * @addtogroup static_lwipopts
+ * @{
+ */
+
+#ifndef STATIC_LWIPOPTS_H
+#define STATIC_LWIPOPTS_H
+
+#define NO_SYS 0
+
+#define LWIP_TIMERS 1
+#define LWIP_TIMERS_CUSTOM 0
+
+#define LWIP_TCPIP_CORE_LOCKING 1
+#define LWIP_TCPIP_CORE_LOCKING_INPUT 0
+#define LWIP_COMPAT_MUTEX_ALLOWED
+
+#define SYS_LIGHTWEIGHT_PROT 1
+
+#define MEM_ALIGNMENT 4
+
+#endif /* STATIC_LWIPOPTS_H */
+
+/** @} */