FreeRTOS+TCP with STM32F779

Matio · January 7, 2024, 10:06pm

Hello FreeRTOS Community!

I recently acquired a STM32F7 eval board, specifically the “STM32F779I-EVAL,” and I’m trying to use the FreeRTOS+TCP stack. I plan to eventually implement the MQTT stack, but I believe I need to establish a working TCP connection first.

I have created a simple template with FreeRTOS+TCP for the STM32F779 and have shared my repository. I can send the link if needed.

I aim to make it work using a Makefile and the “STM32 for VSCode” extension.

As an initial step, I want to be able to send a ping to the board and receive a response. This will be enough to validate that the template is working correctly.

Currently, I can build and run the project without any issues.

Upon running, I receive the log message “prvIPTask started,” which seems to indicate the initialization of the task was successful.

However, in the prvProcessIPEventsAndTimers() function, when examining xReceivedEvent.eEventType, the code always enters the case eNetworkDownEvent. This leads me to believe it doesn’t detect the network.

I have set up a static IP and tested the connection on a switch. I also tried directly connecting it with an Ethernet cable to my PC, but the issue persists.

I know the hardware works because I have previously managed to get it working with LWIP.

At this point, I’m unsure of where to look next. I’m particularly uncertain about the link between the PHY and FreeRTOS.

Here are snippets of my FreeRTOSConfig.h, FreeRTOSIPConfig.h, stm32f7xx_hal_conf.h, and my implementation of the FreeRTOS_IPInit():

FreeRTOSConfig.h


/* USER CODE BEGIN Header */
/*
 * FreeRTOS Kernel V10.2.1
 * Portion Copyright (C) 2017 Amazon.com, Inc. or its affiliates.  All Rights Reserved.
 * Portion Copyright (C) 2019 StMicroelectronics, Inc.  All Rights Reserved.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy of
 * this software and associated documentation files (the "Software"), to deal in
 * the Software without restriction, including without limitation the rights to
 * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
 * the Software, and to permit persons to whom the Software is furnished to do so,
 * subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
 * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
 * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
 * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 *
 * http://www.FreeRTOS.org
 * http://aws.amazon.com/freertos
 *
 * 1 tab == 4 spaces!
 */
/* USER CODE END Header */

#ifndef FREERTOS_CONFIG_H
#define FREERTOS_CONFIG_H

/*-----------------------------------------------------------
 * Application specific definitions.
 *
 * These definitions should be adjusted for your particular hardware and
 * application requirements.
 *
 * These parameters and more are described within the 'configuration' section of the
 * FreeRTOS API documentation available on the FreeRTOS.org web site.
 *
 * See http://www.freertos.org/a00110.html
 *----------------------------------------------------------*/

/* USER CODE BEGIN Includes */
/* Section where include file can be added */
/* USER CODE END Includes */

/* Ensure definitions are only used by the compiler, and not by the assembler. */
#if defined(__ICCARM__) || defined(__CC_ARM) || defined(__GNUC__)
  #include <stdint.h>
  extern uint32_t SystemCoreClock;
#endif
#define configENABLE_FPU                         0
#define configENABLE_MPU                         0

#define configUSE_PREEMPTION                     1
#define configSUPPORT_STATIC_ALLOCATION          1
#define configSUPPORT_DYNAMIC_ALLOCATION         1
#define configUSE_IDLE_HOOK                      0
#define configUSE_TICK_HOOK                      0
#define configCPU_CLOCK_HZ                       ( SystemCoreClock )
#define configTICK_RATE_HZ                       ((TickType_t)1000)
#define configMAX_PRIORITIES                     ( 56 )
#define configMINIMAL_STACK_SIZE                 ((uint16_t)128)
#define configTOTAL_HEAP_SIZE                    ((size_t)30000)
#define configMAX_TASK_NAME_LEN                  ( 16 )
#define configUSE_TRACE_FACILITY                 1
#define configUSE_16_BIT_TICKS                   0
#define configUSE_MUTEXES                        1
#define configQUEUE_REGISTRY_SIZE                8
#define configUSE_RECURSIVE_MUTEXES              1
#define configUSE_COUNTING_SEMAPHORES            1
#define configUSE_PORT_OPTIMISED_TASK_SELECTION  0
/* USER CODE BEGIN MESSAGE_BUFFER_LENGTH_TYPE */
/* Defaults to size_t for backward compatibility, but can be changed
   if lengths will always be less than the number of bytes in a size_t. */
#define configMESSAGE_BUFFER_LENGTH_TYPE         size_t
/* USER CODE END MESSAGE_BUFFER_LENGTH_TYPE */

/* Co-routine definitions. */
#define configUSE_CO_ROUTINES                    0
#define configMAX_CO_ROUTINE_PRIORITIES          ( 2 )

/* Software timer definitions. */
#define configUSE_TIMERS                         1
#define configTIMER_TASK_PRIORITY                ( 2 )
#define configTIMER_QUEUE_LENGTH                 10
#define configTIMER_TASK_STACK_DEPTH             256

/* Set the following definitions to 1 to include the API function, or zero
to exclude the API function. */
#define INCLUDE_vTaskPrioritySet             1
#define INCLUDE_uxTaskPriorityGet            1
#define INCLUDE_vTaskDelete                  1
#define INCLUDE_vTaskCleanUpResources        0
#define INCLUDE_vTaskSuspend                 1
#define INCLUDE_vTaskDelayUntil              1
#define INCLUDE_vTaskDelay                   1
#define INCLUDE_xTaskGetSchedulerState       1
#define INCLUDE_xTimerPendFunctionCall       1
#define INCLUDE_xQueueGetMutexHolder         1
#define INCLUDE_uxTaskGetStackHighWaterMark  1
#define INCLUDE_eTaskGetState                1

/*
 * The CMSIS-RTOS V2 FreeRTOS wrapper is dependent on the heap implementation used
 * by the application thus the correct define need to be enabled below
 */
#define USE_FreeRTOS_HEAP_4

/* Cortex-M specific definitions. */
#ifdef __NVIC_PRIO_BITS
 /* __BVIC_PRIO_BITS will be specified when CMSIS is being used. */
 #define configPRIO_BITS         __NVIC_PRIO_BITS
#else
 #define configPRIO_BITS         4
#endif

/* The lowest interrupt priority that can be used in a call to a "set priority"
function. */
#define configLIBRARY_LOWEST_INTERRUPT_PRIORITY   15

/* The highest interrupt priority that can be used by any interrupt service
routine that makes calls to interrupt safe FreeRTOS API functions.  DO NOT CALL
INTERRUPT SAFE FREERTOS API FUNCTIONS FROM ANY INTERRUPT THAT HAS A HIGHER
PRIORITY THAN THIS! (higher priorities are lower numeric values). */
#define configLIBRARY_MAX_SYSCALL_INTERRUPT_PRIORITY 5

/* Interrupt priorities used by the kernel port layer itself.  These are generic
to all Cortex-M ports, and do not rely on any particular library functions. */
#define configKERNEL_INTERRUPT_PRIORITY 		( configLIBRARY_LOWEST_INTERRUPT_PRIORITY << (8 - configPRIO_BITS) )
/* !!!! configMAX_SYSCALL_INTERRUPT_PRIORITY must not be set to zero !!!!
See http://www.FreeRTOS.org/RTOS-Cortex-M3-M4.html. */
#define configMAX_SYSCALL_INTERRUPT_PRIORITY 	( configLIBRARY_MAX_SYSCALL_INTERRUPT_PRIORITY << (8 - configPRIO_BITS) )

/* Normal assert() semantics without relying on the provision of an assert.h
header file. */
/* USER CODE BEGIN 1 */
#define configASSERT( x ) if ((x) == 0) {taskDISABLE_INTERRUPTS(); for( ;; );}
/* USER CODE END 1 */

/* Definitions that map the FreeRTOS port interrupt handlers to their CMSIS
standard names. */
#define vPortSVCHandler    SVC_Handler
#define xPortPendSVHandler PendSV_Handler

/* IMPORTANT: This define is commented when used with STM32Cube firmware, when the timebase source is SysTick,
              to prevent overwriting SysTick_Handler defined within STM32Cube HAL */

#define xPortSysTickHandler SysTick_Handler

/* USER CODE BEGIN Defines */
/* Section where parameter definitions can be added (for instance, to override default ones in FreeRTOS.h) */
/* USER CODE END Defines */

#endif /* FREERTOS_CONFIG_H */

FreeRTOSIPConfig.h

/*
 * FreeRTOS V202212.00
 * Copyright (C) 2020 Amazon.com, Inc. or its affiliates. All Rights Reserved.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy of
 * this software and associated documentation files (the "Software"), to deal in
 * the Software without restriction, including without limitation the rights to
 * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
 * the Software, and to permit persons to whom the Software is furnished to do so,
 * subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
 * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
 * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
 * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 *
 * https://www.FreeRTOS.org
 * https://github.com/FreeRTOS
 *
 */


/*****************************************************************************
*
* See the following URL for configuration information.
* https://www.FreeRTOS.org/FreeRTOS-Plus/FreeRTOS_Plus_TCP/TCP_IP_Configuration.html
*
*****************************************************************************/

#ifndef FREERTOS_IP_CONFIG_H
#define FREERTOS_IP_CONFIG_H

/* Prototype for the function used to print out. In this case it prints to the
 * console before the network is connected then a UDP port after the network has
 * connected. */
extern void vLoggingPrintf( const char * pcFormatString,
                            ... );

/* Set to 1 to enable IPv4. */
#define ipconfigUSE_IPv4                    ( 1 )

/* Set to 1 to enable IPv6. */
#define ipconfigUSE_IPv6                    ( 0 )

/* Set to 0 to disable backward compatible. */
#define ipconfigIPv4_BACKWARD_COMPATIBLE    1

/* Set to 0 to disable compatible for multiple end-points/interfaces.
 * Only one interface/end-point is allowed to use when ipconfigCOMPATIBLE_WITH_SINGLE
 * is set to 1. */
#define ipconfigCOMPATIBLE_WITH_SINGLE      1

/* Set to 1 to print out debug messages. If ipconfigHAS_DEBUG_PRINTF is set to
 * 1 then FreeRTOS_debug_printf should be defined to the function used to print
 * out the debugging messages. */
#define ipconfigHAS_DEBUG_PRINTF            1
#if ( ipconfigHAS_DEBUG_PRINTF == 1 )
    #define FreeRTOS_debug_printf( X )    vLoggingPrintf X
#endif

/* Set to 1 to print out non debugging messages, for example the output of the
 * FreeRTOS_netstat() command, and ping replies. If ipconfigHAS_PRINTF is set to 1
 * then FreeRTOS_printf should be set to the function used to print out the
 * messages. */
#define ipconfigHAS_PRINTF    0
#if ( ipconfigHAS_PRINTF == 1 )
    #define FreeRTOS_printf( X )    vLoggingPrintf X
#endif

/* Define the byte order of the target MCU (the MCU FreeRTOS+TCP is executing
 * on). Valid options are pdFREERTOS_BIG_ENDIAN and pdFREERTOS_LITTLE_ENDIAN. */
#define ipconfigBYTE_ORDER                         pdFREERTOS_LITTLE_ENDIAN

/* If the network card/driver includes checksum offloading (IP/TCP/UDP checksums)
 * then set ipconfigDRIVER_INCLUDED_RX_IP_CHECKSUM to 1 to prevent the software
 * stack repeating the checksum calculations. */
#define ipconfigDRIVER_INCLUDED_RX_IP_CHECKSUM     1
// added same (user) to avoid warning at compilation time
#define ipconfigDRIVER_INCLUDED_TX_IP_CHECKSUM     1

/* Several API's will block until the result is known, or the action has been
 * performed, for example FreeRTOS_send() and FreeRTOS_recv(). The timeouts can be
 * set per socket, using setsockopt(). If not set, the times below will be
 * used as defaults. */
#define ipconfigSOCK_DEFAULT_RECEIVE_BLOCK_TIME    ( 5000 )
#define ipconfigSOCK_DEFAULT_SEND_BLOCK_TIME       ( 5000 )

/* Include support for LLMNR: Link-local Multicast Name Resolution
 * (non-Microsoft) */
#define ipconfigUSE_LLMNR                          ( 0 )

/* Include support for NBNS: NetBIOS Name Service (Microsoft) */
#define ipconfigUSE_NBNS                           ( 0 )

/* Include support for DNS caching. For TCP, having a small DNS cache is very
 * useful. When a cache is present, ipconfigDNS_REQUEST_ATTEMPTS can be kept low
 * and also DNS may use small timeouts. If a DNS reply comes in after the DNS
 * socket has been destroyed, the result will be stored into the cache. The next
 * call to FreeRTOS_gethostbyname() will return immediately, without even creating
 * a socket. */
#define ipconfigUSE_DNS_CACHE                      ( 1 )
#define ipconfigDNS_CACHE_NAME_LENGTH              ( 16 )
#define ipconfigDNS_CACHE_ENTRIES                  ( 4 )
#define ipconfigDNS_REQUEST_ATTEMPTS               ( 2 )

/* The IP stack executes it its own task (although any application task can make
 * use of its services through the published sockets API). ipconfigUDP_TASK_PRIORITY
 * sets the priority of the task that executes the IP stack. The priority is a
 * standard FreeRTOS task priority so can take any value from 0 (the lowest
 * priority) to (configMAX_PRIORITIES - 1) (the highest priority).
 * configMAX_PRIORITIES is a standard FreeRTOS configuration parameter defined in
 * FreeRTOSConfig.h, not FreeRTOSIPConfig.h. Consideration needs to be given as to
 * the priority assigned to the task executing the IP stack relative to the
 * priority assigned to tasks that use the IP stack. */
#define ipconfigIP_TASK_PRIORITY                   ( configMAX_PRIORITIES - 2 )

/* The size, in words (not bytes), of the stack allocated to the FreeRTOS+TCP
 * task. This setting is less important when the FreeRTOS Win32 simulator is used
 * as the Win32 simulator only stores a fixed amount of information on the task
 * stack. FreeRTOS includes optional stack overflow detection, see:
 * http://www.freertos.org/Stacks-and-stack-overflow-checking.html */
#define ipconfigIP_TASK_STACK_SIZE_WORDS           ( configMINIMAL_STACK_SIZE * 5 )

/* ipconfigRAND32() is called by the IP stack to generate random numbers for
 * things such as a DHCP transaction number or initial sequence number. Random
 * number generation is performed via this macro to allow applications to use their
 * own random number generation method. For example, it might be possible to
 * generate a random number by sampling noise on an analogue input. */
extern UBaseType_t uxRand();
#define ipconfigRAND32()    uxRand()

/* If ipconfigUSE_NETWORK_EVENT_HOOK is set to 1 then FreeRTOS+TCP will call the
 * network event hook at the appropriate times. If ipconfigUSE_NETWORK_EVENT_HOOK
 * is not set to 1 then the network event hook will never be called. See
 * http://www.FreeRTOS.org/FreeRTOS-Plus/FreeRTOS_Plus_UDP/API/vApplicationIPNetworkEventHook.shtml
 */
#define ipconfigUSE_NETWORK_EVENT_HOOK                 1

/* Sockets have a send block time attribute. If FreeRTOS_sendto() is called but
 * a network buffer cannot be obtained then the calling task is held in the Blocked
 * state (so other tasks can continue to executed) until either a network buffer
 * becomes available or the send block time expires. If the send block time expires
 * then the send operation is aborted. The maximum allowable send block time is
 * capped to the value set by ipconfigMAX_SEND_BLOCK_TIME_TICKS. Capping the
 * maximum allowable send block time prevents prevents a deadlock occurring when
 * all the network buffers are in use and the tasks that process (and subsequently
 * free) the network buffers are themselves blocked waiting for a network buffer.
 * ipconfigMAX_SEND_BLOCK_TIME_TICKS is specified in RTOS ticks. A time in
 * milliseconds can be converted to a time in ticks by dividing the time in
 * milliseconds by portTICK_PERIOD_MS. */
#define ipconfigUDP_MAX_SEND_BLOCK_TIME_TICKS          ( 5000U / portTICK_PERIOD_MS )

/* If ipconfigUSE_DHCP is 1 then FreeRTOS+TCP will attempt to retrieve an IP
 * address, netmask, DNS server address and gateway address from a DHCP server. If
 * ipconfigUSE_DHCP is 0 then FreeRTOS+TCP will use a static IP address. The
 * stack will revert to using the static IP address even when ipconfigUSE_DHCP is
 * set to 1 if a valid configuration cannot be obtained from a DHCP server for any
 * reason. The static configuration used is that passed into the stack by the
 * FreeRTOS_IPInit() function call. */
#define ipconfigUSE_DHCP                               0

/* When ipconfigUSE_DHCP is set to 1, DHCP requests will be sent out at
 * increasing time intervals until either a reply is received from a DHCP server
 * and accepted, or the interval between transmissions reaches
 * ipconfigMAXIMUM_DISCOVER_TX_PERIOD. The IP stack will revert to using the
 * static IP address passed as a parameter to FreeRTOS_IPInit() if the
 * re-transmission time interval reaches ipconfigMAXIMUM_DISCOVER_TX_PERIOD without
 * a DHCP reply being received. */
#define ipconfigMAXIMUM_DISCOVER_TX_PERIOD             ( 120000U / portTICK_PERIOD_MS )

/* The ARP cache is a table that maps IP addresses to MAC addresses. The IP
 * stack can only send a UDP message to a remove IP address if it knowns the MAC
 * address associated with the IP address, or the MAC address of the router used to
 * contact the remote IP address. When a UDP message is received from a remote IP
 * address the MAC address and IP address are added to the ARP cache. When a UDP
 * message is sent to a remote IP address that does not already appear in the ARP
 * cache then the UDP message is replaced by a ARP message that solicits the
 * required MAC address information. ipconfigARP_CACHE_ENTRIES defines the maximum
 * number of entries that can exist in the ARP table at any one time. */
#define ipconfigARP_CACHE_ENTRIES                      6

/* ARP requests that do not result in an ARP response will be re-transmitted a
 * maximum of ipconfigMAX_ARP_RETRANSMISSIONS times before the ARP request is
 * aborted. */
#define ipconfigMAX_ARP_RETRANSMISSIONS                ( 5 )

/* ipconfigMAX_ARP_AGE defines the maximum time between an entry in the ARP
 * table being created or refreshed and the entry being removed because it is stale.
 * New ARP requests are sent for ARP cache entries that are nearing their maximum
 * age. ipconfigMAX_ARP_AGE is specified in tens of seconds, so a value of 150 is
 * equal to 1500 seconds (or 25 minutes). */
#define ipconfigMAX_ARP_AGE                            150

/* Implementing FreeRTOS_inet_addr() necessitates the use of string handling
 * routines, which are relatively large. To save code space the full
 * FreeRTOS_inet_addr() implementation is made optional, and a smaller and faster
 * alternative called FreeRTOS_inet_addr_quick() is provided. FreeRTOS_inet_addr()
 * takes an IP in decimal dot format (for example, "192.168.0.1") as its parameter.
 * FreeRTOS_inet_addr_quick() takes an IP address as four separate numerical octets
 * (for example, 192, 168, 0, 1) as its parameters. If
 * ipconfigINCLUDE_FULL_INET_ADDR is set to 1 then both FreeRTOS_inet_addr() and
 * FreeRTOS_indet_addr_quick() are available. If ipconfigINCLUDE_FULL_INET_ADDR is
 * not set to 1 then only FreeRTOS_indet_addr_quick() is available. */
#define ipconfigINCLUDE_FULL_INET_ADDR                 1

/* ipconfigNUM_NETWORK_BUFFER_DESCRIPTORS defines the total number of network buffer that
 * are available to the IP stack. The total number of network buffers is limited
 * to ensure the total amount of RAM that can be consumed by the IP stack is capped
 * to a pre-determinable value. */
#define ipconfigNUM_NETWORK_BUFFER_DESCRIPTORS         60

/* A FreeRTOS queue is used to send events from application tasks to the IP
 * stack. ipconfigEVENT_QUEUE_LENGTH sets the maximum number of events that can
 * be queued for processing at any one time. The event queue must be a minimum of
 * 5 greater than the total number of network buffers. */
#define ipconfigEVENT_QUEUE_LENGTH                     ( ipconfigNUM_NETWORK_BUFFER_DESCRIPTORS + 5 )

/* The address of a socket is the combination of its IP address and its port
 * number. FreeRTOS_bind() is used to manually allocate a port number to a socket
 * (to 'bind' the socket to a port), but manual binding is not normally necessary
 * for client sockets (those sockets that initiate outgoing connections rather than
 * wait for incoming connections on a known port number). If
 * ipconfigALLOW_SOCKET_SEND_WITHOUT_BIND is set to 1 then calling
 * FreeRTOS_sendto() on a socket that has not yet been bound will result in the IP
 * stack automatically binding the socket to a port number from the range
 * socketAUTO_PORT_ALLOCATION_START_NUMBER to 0xffff. If
 * ipconfigALLOW_SOCKET_SEND_WITHOUT_BIND is set to 0 then calling FreeRTOS_sendto()
 * on a socket that has not yet been bound will result in the send operation being
 * aborted. */
#define ipconfigALLOW_SOCKET_SEND_WITHOUT_BIND         1

/* Defines the Time To Live (TTL) values used in outgoing UDP packets. */
#define ipconfigUDP_TIME_TO_LIVE                       128
#define ipconfigTCP_TIME_TO_LIVE                       128 /* also defined in FreeRTOSIPConfigDefaults.h */

/* USE_TCP: Use TCP and all its features */
#define ipconfigUSE_TCP                                ( 1 )

/* USE_WIN: Let TCP use windowing mechanism. */
#define ipconfigUSE_TCP_WIN                            ( 0 )

/* The MTU is the maximum number of bytes the payload of a network frame can
 * contain. For normal Ethernet V2 frames the maximum MTU is 1500. Setting a
 * lower value can save RAM, depending on the buffer management scheme used. If
 * ipconfigCAN_FRAGMENT_OUTGOING_PACKETS is 1 then (ipconfigNETWORK_MTU - 28) must
 * be divisible by 8. */
#define ipconfigNETWORK_MTU                            1500U

/* Set ipconfigUSE_DNS to 1 to include a basic DNS client/resolver. DNS is used
 * through the FreeRTOS_gethostbyname() API function. */
#define ipconfigUSE_DNS                                0

/* If ipconfigREPLY_TO_INCOMING_PINGS is set to 1 then the IP stack will
 * generate replies to incoming ICMP echo (ping) requests. */
#define ipconfigREPLY_TO_INCOMING_PINGS                1

/* If ipconfigSUPPORT_OUTGOING_PINGS is set to 1 then the
 * FreeRTOS_SendPingRequest() API function is available. */
#define ipconfigSUPPORT_OUTGOING_PINGS                 0

/* If ipconfigSUPPORT_SELECT_FUNCTION is set to 1 then the FreeRTOS_select()
 * (and associated) API function is available. */
#define ipconfigSUPPORT_SELECT_FUNCTION                1

/* If ipconfigFILTER_OUT_NON_ETHERNET_II_FRAMES is set to 1 then Ethernet frames
 * that are not in Ethernet II format will be dropped. This option is included for
 * potential future IP stack developments. */
#define ipconfigFILTER_OUT_NON_ETHERNET_II_FRAMES      1

/* If ipconfigETHERNET_DRIVER_FILTERS_FRAME_TYPES is set to 1 then it is the
 * responsibility of the Ethernet interface to filter out packets that are of no
 * interest. If the Ethernet interface does not implement this functionality, then
 * set ipconfigETHERNET_DRIVER_FILTERS_FRAME_TYPES to 0 to have the IP stack
 * perform the filtering instead (it is much less efficient for the stack to do it
 * because the packet will already have been passed into the stack). If the
 * Ethernet driver does all the necessary filtering in hardware then software
 * filtering can be removed by using a value other than 1 or 0. */
#define ipconfigETHERNET_DRIVER_FILTERS_FRAME_TYPES    1

/* The Linux simulator cannot really simulate MAC interrupts, and needs to
 * block occasionally to allow other tasks to run. */
#define configWINDOWS_MAC_INTERRUPT_SIMULATOR_DELAY    ( 20 / portTICK_PERIOD_MS )

/* Advanced only: in order to access 32-bit fields in the IP packets with
 * 32-bit memory instructions, all packets will be stored 32-bit-aligned, plus 16-bits.
 * This has to do with the contents of the IP-packets: all 32-bit fields are
 * 32-bit-aligned, plus 16-bit(!) */
#define ipconfigPACKET_FILLER_SIZE                     2U

/* Define the size of the pool of TCP window descriptors. On the average, each
 * TCP socket will use up to 2 x 6 descriptors, meaning that it can have 2 x 6
 * outstanding packets (for Rx and Tx). When using up to 10 TP sockets
 * simultaneously, one could define TCP_WIN_SEG_COUNT as 120. */
#define ipconfigTCP_WIN_SEG_COUNT                      240

/* Each TCP socket has a circular buffers for Rx and Tx, which have a fixed
 * maximum size. Define the size of Rx buffer for TCP sockets. */
#define ipconfigTCP_RX_BUFFER_LENGTH                   ( 1000 )

/* Define the size of Tx buffer for TCP sockets. */
#define ipconfigTCP_TX_BUFFER_LENGTH                   ( 1000 )

/* When using call-back handlers, the driver may check if the handler points to
 * real program memory (RAM or flash) or just has a random non-zero value. */
#define ipconfigIS_VALID_PROG_ADDRESS( x )    ( ( x ) != NULL )

/* Include support for TCP hang protection. All sockets in a connecting or
 * disconnecting stage will timeout after a period of non-activity. */
#define ipconfigTCP_HANG_PROTECTION         ( 1 )
#define ipconfigTCP_HANG_PROTECTION_TIME    ( 30 )

/* Include support for TCP keep-alive messages. */
#define ipconfigTCP_KEEP_ALIVE              ( 1 )
#define ipconfigTCP_KEEP_ALIVE_INTERVAL     ( 20 ) /* in seconds */

#define ipconfigUSE_RMII                    ( 0 )

#define portINLINE                          __inline

/* Set ipconfigBUFFER_PADDING on 64-bit platforms */
#if INTPTR_MAX == INT64_MAX
    #define ipconfigBUFFER_PADDING    ( 14U )
#endif /* INTPTR_MAX == INT64_MAX */

#endif /* FREERTOS_IP_CONFIG_H */

stm32f7xx_hal_conf_template.h

/* USER CODE BEGIN Header */
/**
  ******************************************************************************
  * @file    stm32f7xx_hal_conf_template.h
  * @author  MCD Application Team
  * @brief   HAL configuration template file.
  *          This file should be copied to the application folder and renamed
  *          to stm32f7xx_hal_conf.h.
  ******************************************************************************
  * @attention
  *
  * Copyright (c) 2017 STMicroelectronics.
  * All rights reserved.
  *
  * This software is licensed under terms that can be found in the LICENSE file
  * in the root directory of this software component.
  * If no LICENSE file comes with this software, it is provided AS-IS.
  *
  ******************************************************************************
  */
/* USER CODE END Header */

/* Define to prevent recursive inclusion -------------------------------------*/
#ifndef __STM32F7xx_HAL_CONF_H
#define __STM32F7xx_HAL_CONF_H

#ifdef __cplusplus
 extern "C" {
#endif

/* Exported types ------------------------------------------------------------*/
/* Exported constants --------------------------------------------------------*/

/* ########################## Module Selection ############################## */
/**
  * @brief This is the list of modules to be used in the HAL driver
  */
#define HAL_MODULE_ENABLED

  /* #define HAL_CRYP_MODULE_ENABLED */
/* #define HAL_ADC_MODULE_ENABLED */
/* #define HAL_CAN_MODULE_ENABLED */
/* #define HAL_CEC_MODULE_ENABLED */
/* #define HAL_CRC_MODULE_ENABLED */
/* #define HAL_DAC_MODULE_ENABLED */
/* #define HAL_DCMI_MODULE_ENABLED */
/* #define HAL_DMA2D_MODULE_ENABLED */
#define HAL_ETH_MODULE_ENABLED
/* #define HAL_ETH_LEGACY_MODULE_ENABLED */
/* #define HAL_NAND_MODULE_ENABLED */
/* #define HAL_NOR_MODULE_ENABLED */
/* #define HAL_SRAM_MODULE_ENABLED */
/* #define HAL_SDRAM_MODULE_ENABLED */
/* #define HAL_HASH_MODULE_ENABLED */
/* #define HAL_I2S_MODULE_ENABLED */
/* #define HAL_IWDG_MODULE_ENABLED */
/* #define HAL_LPTIM_MODULE_ENABLED */
/* #define HAL_LTDC_MODULE_ENABLED */
/* #define HAL_QSPI_MODULE_ENABLED */
#define HAL_RNG_MODULE_ENABLED
/* #define HAL_RTC_MODULE_ENABLED */
/* #define HAL_SAI_MODULE_ENABLED */
/* #define HAL_SD_MODULE_ENABLED */
/* #define HAL_MMC_MODULE_ENABLED */
/* #define HAL_SPDIFRX_MODULE_ENABLED */
/* #define HAL_SPI_MODULE_ENABLED */
#define HAL_TIM_MODULE_ENABLED
#define HAL_UART_MODULE_ENABLED
/* #define HAL_USART_MODULE_ENABLED */
/* #define HAL_IRDA_MODULE_ENABLED */
/* #define HAL_SMARTCARD_MODULE_ENABLED */
/* #define HAL_WWDG_MODULE_ENABLED */
/* #define HAL_PCD_MODULE_ENABLED */
/* #define HAL_HCD_MODULE_ENABLED */
/* #define HAL_DFSDM_MODULE_ENABLED */
/* #define HAL_DSI_MODULE_ENABLED */
/* #define HAL_JPEG_MODULE_ENABLED */
/* #define HAL_MDIOS_MODULE_ENABLED */
/* #define HAL_SMBUS_MODULE_ENABLED */
/* #define HAL_EXTI_MODULE_ENABLED */
#define HAL_GPIO_MODULE_ENABLED
#define HAL_EXTI_MODULE_ENABLED
#define HAL_DMA_MODULE_ENABLED
#define HAL_RCC_MODULE_ENABLED
#define HAL_FLASH_MODULE_ENABLED
#define HAL_PWR_MODULE_ENABLED
#define HAL_I2C_MODULE_ENABLED
#define HAL_CORTEX_MODULE_ENABLED

/* ########################## HSE/HSI Values adaptation ##################### */
/**
  * @brief Adjust the value of External High Speed oscillator (HSE) used in your application.
  *        This value is used by the RCC HAL module to compute the system frequency
  *        (when HSE is used as system clock source, directly or through the PLL).
  */
#if !defined  (HSE_VALUE)
  #define HSE_VALUE    ((uint32_t)25000000U) /*!< Value of the External oscillator in Hz */
#endif /* HSE_VALUE */

#if !defined  (HSE_STARTUP_TIMEOUT)
  #define HSE_STARTUP_TIMEOUT    ((uint32_t)100U)   /*!< Time out for HSE start up, in ms */
#endif /* HSE_STARTUP_TIMEOUT */

/**
  * @brief Internal High Speed oscillator (HSI) value.
  *        This value is used by the RCC HAL module to compute the system frequency
  *        (when HSI is used as system clock source, directly or through the PLL).
  */
#if !defined  (HSI_VALUE)
  #define HSI_VALUE    ((uint32_t)16000000U) /*!< Value of the Internal oscillator in Hz*/
#endif /* HSI_VALUE */

/**
  * @brief Internal Low Speed oscillator (LSI) value.
  */
#if !defined  (LSI_VALUE)
 #define LSI_VALUE  ((uint32_t)32000U)       /*!< LSI Typical Value in Hz*/
#endif /* LSI_VALUE */                      /*!< Value of the Internal Low Speed oscillator in Hz
                                             The real value may vary depending on the variations
                                             in voltage and temperature.  */
/**
  * @brief External Low Speed oscillator (LSE) value.
  */
#if !defined  (LSE_VALUE)
 #define LSE_VALUE  ((uint32_t)32768U)    /*!< Value of the External Low Speed oscillator in Hz */
#endif /* LSE_VALUE */

#if !defined  (LSE_STARTUP_TIMEOUT)
  #define LSE_STARTUP_TIMEOUT    ((uint32_t)5000U)   /*!< Time out for LSE start up, in ms */
#endif /* LSE_STARTUP_TIMEOUT */

/**
  * @brief External clock source for I2S peripheral
  *        This value is used by the I2S HAL module to compute the I2S clock source
  *        frequency, this source is inserted directly through I2S_CKIN pad.
  */
#if !defined  (EXTERNAL_CLOCK_VALUE)
  #define EXTERNAL_CLOCK_VALUE    ((uint32_t)12288000U) /*!< Value of the Internal oscillator in Hz*/
#endif /* EXTERNAL_CLOCK_VALUE */

/* Tip: To avoid modifying this file each time you need to use different HSE,
   ===  you can define the HSE value in your toolchain compiler preprocessor. */

/* ########################### System Configuration ######################### */
/**
  * @brief This is the HAL system configuration section
  */
#define  VDD_VALUE                    3300U /*!< Value of VDD in mv */
#define  TICK_INT_PRIORITY            ((uint32_t)15U) /*!< tick interrupt priority */
#define  USE_RTOS                     0U
#define  PREFETCH_ENABLE              0U
#define  ART_ACCELERATOR_ENABLE        0U /* To enable instruction cache and prefetch */

#define  USE_HAL_ADC_REGISTER_CALLBACKS         0U /* ADC register callback disabled       */
#define  USE_HAL_CAN_REGISTER_CALLBACKS         0U /* CAN register callback disabled       */
#define  USE_HAL_CEC_REGISTER_CALLBACKS         0U /* CEC register callback disabled       */
#define  USE_HAL_CRYP_REGISTER_CALLBACKS        0U /* CRYP register callback disabled      */
#define  USE_HAL_DAC_REGISTER_CALLBACKS         0U /* DAC register callback disabled       */
#define  USE_HAL_DCMI_REGISTER_CALLBACKS        0U /* DCMI register callback disabled      */
#define  USE_HAL_DFSDM_REGISTER_CALLBACKS       0U /* DFSDM register callback disabled     */
#define  USE_HAL_DMA2D_REGISTER_CALLBACKS       0U /* DMA2D register callback disabled     */
#define  USE_HAL_DSI_REGISTER_CALLBACKS         0U /* DSI register callback disabled       */
#define  USE_HAL_ETH_REGISTER_CALLBACKS         0U /* ETH register callback disabled       */
#define  USE_HAL_HASH_REGISTER_CALLBACKS        0U /* HASH register callback disabled      */
#define  USE_HAL_HCD_REGISTER_CALLBACKS         0U /* HCD register callback disabled       */
#define  USE_HAL_I2C_REGISTER_CALLBACKS         0U /* I2C register callback disabled       */
#define  USE_HAL_I2S_REGISTER_CALLBACKS         0U /* I2S register callback disabled       */
#define  USE_HAL_IRDA_REGISTER_CALLBACKS        0U /* IRDA register callback disabled      */
#define  USE_HAL_JPEG_REGISTER_CALLBACKS        0U /* JPEG register callback disabled      */
#define  USE_HAL_LPTIM_REGISTER_CALLBACKS       0U /* LPTIM register callback disabled     */
#define  USE_HAL_LTDC_REGISTER_CALLBACKS        0U /* LTDC register callback disabled      */
#define  USE_HAL_MDIOS_REGISTER_CALLBACKS       0U /* MDIOS register callback disabled     */
#define  USE_HAL_MMC_REGISTER_CALLBACKS         0U /* MMC register callback disabled       */
#define  USE_HAL_NAND_REGISTER_CALLBACKS        0U /* NAND register callback disabled      */
#define  USE_HAL_NOR_REGISTER_CALLBACKS         0U /* NOR register callback disabled       */
#define  USE_HAL_PCD_REGISTER_CALLBACKS         0U /* PCD register callback disabled       */
#define  USE_HAL_QSPI_REGISTER_CALLBACKS        0U /* QSPI register callback disabled      */
#define  USE_HAL_RNG_REGISTER_CALLBACKS         0U /* RNG register callback disabled       */
#define  USE_HAL_RTC_REGISTER_CALLBACKS         0U /* RTC register callback disabled       */
#define  USE_HAL_SAI_REGISTER_CALLBACKS         0U /* SAI register callback disabled       */
#define  USE_HAL_SD_REGISTER_CALLBACKS          0U /* SD register callback disabled        */
#define  USE_HAL_SMARTCARD_REGISTER_CALLBACKS   0U /* SMARTCARD register callback disabled */
#define  USE_HAL_SDRAM_REGISTER_CALLBACKS       0U /* SDRAM register callback disabled     */
#define  USE_HAL_SRAM_REGISTER_CALLBACKS        0U /* SRAM register callback disabled      */
#define  USE_HAL_SPDIFRX_REGISTER_CALLBACKS     0U /* SPDIFRX register callback disabled   */
#define  USE_HAL_SMBUS_REGISTER_CALLBACKS       0U /* SMBUS register callback disabled     */
#define  USE_HAL_SPI_REGISTER_CALLBACKS         0U /* SPI register callback disabled       */
#define  USE_HAL_TIM_REGISTER_CALLBACKS         0U /* TIM register callback disabled       */
#define  USE_HAL_UART_REGISTER_CALLBACKS        0U /* UART register callback disabled      */
#define  USE_HAL_USART_REGISTER_CALLBACKS       0U /* USART register callback disabled     */
#define  USE_HAL_WWDG_REGISTER_CALLBACKS        0U /* WWDG register callback disabled      */

/* ########################## Assert Selection ############################## */
/**
  * @brief Uncomment the line below to expanse the "assert_param" macro in the
  *        HAL drivers code
  */
/* #define USE_FULL_ASSERT    1U */

/* ################## Ethernet peripheral configuration ##################### */

/* Section 1 : Ethernet peripheral configuration */

/* MAC ADDRESS: MAC_ADDR0:MAC_ADDR1:MAC_ADDR2:MAC_ADDR3:MAC_ADDR4:MAC_ADDR5 */
#define MAC_ADDR0   2U
#define MAC_ADDR1   0U
#define MAC_ADDR2   0U
#define MAC_ADDR3   0U
#define MAC_ADDR4   0U
#define MAC_ADDR5   0U

/* Definition of the Ethernet driver buffers size and count */
#define ETH_RX_BUF_SIZE                1524 /* buffer size for receive               */
#define ETH_TX_BUF_SIZE                ETH_MAX_PACKET_SIZE /* buffer size for transmit              */
#define ETH_RXBUFNB                    ((uint32_t)4U)       /* 4 Rx buffers of size ETH_RX_BUF_SIZE  */
#define ETH_TXBUFNB                    ((uint32_t)4U)       /* 4 Tx buffers of size ETH_TX_BUF_SIZE  */

/* Section 2: PHY configuration section */

/* DP83848_PHY_ADDRESS Address*/
#define DP83848_PHY_ADDRESS           0x01U
/* PHY Reset delay these values are based on a 1 ms Systick interrupt*/
#define PHY_RESET_DELAY                 ((uint32_t)0x000000FFU)
/* PHY Configuration delay */
#define PHY_CONFIG_DELAY                ((uint32_t)0x00000FFFU)

#define PHY_READ_TO                     ((uint32_t)0x0000FFFFU)
#define PHY_WRITE_TO                    ((uint32_t)0x0000FFFFU)

/* Section 3: Common PHY Registers */

#define PHY_BCR                         ((uint16_t)0x0000U)    /*!< Transceiver Basic Control Register   */
#define PHY_BSR                         ((uint16_t)0x0001U)    /*!< Transceiver Basic Status Register    */

#define PHY_RESET                       ((uint16_t)0x8000U)  /*!< PHY Reset */
#define PHY_LOOPBACK                    ((uint16_t)0x4000U)  /*!< Select loop-back mode */
#define PHY_FULLDUPLEX_100M             ((uint16_t)0x2100U)  /*!< Set the full-duplex mode at 100 Mb/s */
#define PHY_HALFDUPLEX_100M             ((uint16_t)0x2000U)  /*!< Set the half-duplex mode at 100 Mb/s */
#define PHY_FULLDUPLEX_10M              ((uint16_t)0x0100U)  /*!< Set the full-duplex mode at 10 Mb/s  */
#define PHY_HALFDUPLEX_10M              ((uint16_t)0x0000U)  /*!< Set the half-duplex mode at 10 Mb/s  */
#define PHY_AUTONEGOTIATION             ((uint16_t)0x1000U)  /*!< Enable auto-negotiation function     */
#define PHY_RESTART_AUTONEGOTIATION     ((uint16_t)0x0200U)  /*!< Restart auto-negotiation function    */
#define PHY_POWERDOWN                   ((uint16_t)0x0800U)  /*!< Select the power down mode           */
#define PHY_ISOLATE                     ((uint16_t)0x0400U)  /*!< Isolate PHY from MII                 */

#define PHY_AUTONEGO_COMPLETE           ((uint16_t)0x0020U)  /*!< Auto-Negotiation process completed   */
#define PHY_LINKED_STATUS               ((uint16_t)0x0004U)  /*!< Valid link established               */
#define PHY_JABBER_DETECTION            ((uint16_t)0x0002U)  /*!< Jabber condition detected            */

/* Section 4: Extended PHY Registers */
#define PHY_SR                          ((uint16_t)0x10U)    /*!< PHY status register Offset                      */

#define PHY_SPEED_STATUS                ((uint16_t)0x0002U)  /*!< PHY Speed mask                                  */
#define PHY_DUPLEX_STATUS               ((uint16_t)0x0004U)  /*!< PHY Duplex mask                                 */

/* ################## SPI peripheral configuration ########################## */

/* CRC FEATURE: Use to activate CRC feature inside HAL SPI Driver
* Activated: CRC code is present inside driver
* Deactivated: CRC code cleaned from driver
*/

#define USE_SPI_CRC                     0U

/* Includes ------------------------------------------------------------------*/
/**
  * @brief Include module's header file
  */

#ifdef HAL_RCC_MODULE_ENABLED
  #include "stm32f7xx_hal_rcc.h"
#endif /* HAL_RCC_MODULE_ENABLED */

#ifdef HAL_EXTI_MODULE_ENABLED
  #include "stm32f7xx_hal_exti.h"
#endif /* HAL_EXTI_MODULE_ENABLED */

#ifdef HAL_GPIO_MODULE_ENABLED
  #include "stm32f7xx_hal_gpio.h"
#endif /* HAL_GPIO_MODULE_ENABLED */

#ifdef HAL_DMA_MODULE_ENABLED
  #include "stm32f7xx_hal_dma.h"
#endif /* HAL_DMA_MODULE_ENABLED */

#ifdef HAL_CORTEX_MODULE_ENABLED
  #include "stm32f7xx_hal_cortex.h"
#endif /* HAL_CORTEX_MODULE_ENABLED */

#ifdef HAL_ADC_MODULE_ENABLED
  #include "stm32f7xx_hal_adc.h"
#endif /* HAL_ADC_MODULE_ENABLED */

#ifdef HAL_CAN_MODULE_ENABLED
  #include "stm32f7xx_hal_can.h"
#endif /* HAL_CAN_MODULE_ENABLED */

#ifdef HAL_CEC_MODULE_ENABLED
  #include "stm32f7xx_hal_cec.h"
#endif /* HAL_CEC_MODULE_ENABLED */

#ifdef HAL_CRC_MODULE_ENABLED
  #include "stm32f7xx_hal_crc.h"
#endif /* HAL_CRC_MODULE_ENABLED */

#ifdef HAL_CRYP_MODULE_ENABLED
  #include "stm32f7xx_hal_cryp.h"
#endif /* HAL_CRYP_MODULE_ENABLED */

#ifdef HAL_DMA2D_MODULE_ENABLED
  #include "stm32f7xx_hal_dma2d.h"
#endif /* HAL_DMA2D_MODULE_ENABLED */

#ifdef HAL_DAC_MODULE_ENABLED
  #include "stm32f7xx_hal_dac.h"
#endif /* HAL_DAC_MODULE_ENABLED */

#ifdef HAL_DCMI_MODULE_ENABLED
  #include "stm32f7xx_hal_dcmi.h"
#endif /* HAL_DCMI_MODULE_ENABLED */

#ifdef HAL_ETH_MODULE_ENABLED
  #include "stm32f7xx_hal_eth.h"
#endif /* HAL_ETH_MODULE_ENABLED */

#ifdef HAL_ETH_LEGACY_MODULE_ENABLED
  #include "stm32f7xx_hal_eth_legacy.h"
#endif /* HAL_ETH_LEGACY_MODULE_ENABLED */

#ifdef HAL_FLASH_MODULE_ENABLED
  #include "stm32f7xx_hal_flash.h"
#endif /* HAL_FLASH_MODULE_ENABLED */

#ifdef HAL_SRAM_MODULE_ENABLED
  #include "stm32f7xx_hal_sram.h"
#endif /* HAL_SRAM_MODULE_ENABLED */

#ifdef HAL_NOR_MODULE_ENABLED
  #include "stm32f7xx_hal_nor.h"
#endif /* HAL_NOR_MODULE_ENABLED */

#ifdef HAL_NAND_MODULE_ENABLED
  #include "stm32f7xx_hal_nand.h"
#endif /* HAL_NAND_MODULE_ENABLED */

#ifdef HAL_SDRAM_MODULE_ENABLED
  #include "stm32f7xx_hal_sdram.h"
#endif /* HAL_SDRAM_MODULE_ENABLED */

#ifdef HAL_HASH_MODULE_ENABLED
 #include "stm32f7xx_hal_hash.h"
#endif /* HAL_HASH_MODULE_ENABLED */

#ifdef HAL_I2C_MODULE_ENABLED
 #include "stm32f7xx_hal_i2c.h"
#endif /* HAL_I2C_MODULE_ENABLED */

#ifdef HAL_I2S_MODULE_ENABLED
 #include "stm32f7xx_hal_i2s.h"
#endif /* HAL_I2S_MODULE_ENABLED */

#ifdef HAL_IWDG_MODULE_ENABLED
 #include "stm32f7xx_hal_iwdg.h"
#endif /* HAL_IWDG_MODULE_ENABLED */

#ifdef HAL_LPTIM_MODULE_ENABLED
 #include "stm32f7xx_hal_lptim.h"
#endif /* HAL_LPTIM_MODULE_ENABLED */

#ifdef HAL_LTDC_MODULE_ENABLED
 #include "stm32f7xx_hal_ltdc.h"
#endif /* HAL_LTDC_MODULE_ENABLED */

#ifdef HAL_PWR_MODULE_ENABLED
 #include "stm32f7xx_hal_pwr.h"
#endif /* HAL_PWR_MODULE_ENABLED */

#ifdef HAL_QSPI_MODULE_ENABLED
 #include "stm32f7xx_hal_qspi.h"
#endif /* HAL_QSPI_MODULE_ENABLED */

#ifdef HAL_RNG_MODULE_ENABLED
 #include "stm32f7xx_hal_rng.h"
#endif /* HAL_RNG_MODULE_ENABLED */

#ifdef HAL_RTC_MODULE_ENABLED
 #include "stm32f7xx_hal_rtc.h"
#endif /* HAL_RTC_MODULE_ENABLED */

#ifdef HAL_SAI_MODULE_ENABLED
 #include "stm32f7xx_hal_sai.h"
#endif /* HAL_SAI_MODULE_ENABLED */

#ifdef HAL_SD_MODULE_ENABLED
 #include "stm32f7xx_hal_sd.h"
#endif /* HAL_SD_MODULE_ENABLED */

#ifdef HAL_MMC_MODULE_ENABLED
 #include "stm32f7xx_hal_mmc.h"
#endif /* HAL_MMC_MODULE_ENABLED */

#ifdef HAL_SPDIFRX_MODULE_ENABLED
 #include "stm32f7xx_hal_spdifrx.h"
#endif /* HAL_SPDIFRX_MODULE_ENABLED */

#ifdef HAL_SPI_MODULE_ENABLED
 #include "stm32f7xx_hal_spi.h"
#endif /* HAL_SPI_MODULE_ENABLED */

#ifdef HAL_TIM_MODULE_ENABLED
 #include "stm32f7xx_hal_tim.h"
#endif /* HAL_TIM_MODULE_ENABLED */

#ifdef HAL_UART_MODULE_ENABLED
 #include "stm32f7xx_hal_uart.h"
#endif /* HAL_UART_MODULE_ENABLED */

#ifdef HAL_USART_MODULE_ENABLED
 #include "stm32f7xx_hal_usart.h"
#endif /* HAL_USART_MODULE_ENABLED */

#ifdef HAL_IRDA_MODULE_ENABLED
 #include "stm32f7xx_hal_irda.h"
#endif /* HAL_IRDA_MODULE_ENABLED */

#ifdef HAL_SMARTCARD_MODULE_ENABLED
 #include "stm32f7xx_hal_smartcard.h"
#endif /* HAL_SMARTCARD_MODULE_ENABLED */

#ifdef HAL_WWDG_MODULE_ENABLED
 #include "stm32f7xx_hal_wwdg.h"
#endif /* HAL_WWDG_MODULE_ENABLED */

#ifdef HAL_PCD_MODULE_ENABLED
 #include "stm32f7xx_hal_pcd.h"
#endif /* HAL_PCD_MODULE_ENABLED */

#ifdef HAL_HCD_MODULE_ENABLED
 #include "stm32f7xx_hal_hcd.h"
#endif /* HAL_HCD_MODULE_ENABLED */

#ifdef HAL_DFSDM_MODULE_ENABLED
 #include "stm32f7xx_hal_dfsdm.h"
#endif /* HAL_DFSDM_MODULE_ENABLED */

#ifdef HAL_DSI_MODULE_ENABLED
 #include "stm32f7xx_hal_dsi.h"
#endif /* HAL_DSI_MODULE_ENABLED */

#ifdef HAL_JPEG_MODULE_ENABLED
 #include "stm32f7xx_hal_jpeg.h"
#endif /* HAL_JPEG_MODULE_ENABLED */

#ifdef HAL_MDIOS_MODULE_ENABLED
 #include "stm32f7xx_hal_mdios.h"
#endif /* HAL_MDIOS_MODULE_ENABLED */

#ifdef HAL_SMBUS_MODULE_ENABLED
 #include "stm32f7xx_hal_smbus.h"
#endif /* HAL_SMBUS_MODULE_ENABLED */

/* Exported macro ------------------------------------------------------------*/
#ifdef  USE_FULL_ASSERT
/**
  * @brief  The assert_param macro is used for function's parameters check.
  * @param  expr: If expr is false, it calls assert_failed function
  *         which reports the name of the source file and the source
  *         line number of the call that failed.
  *         If expr is true, it returns no value.
  * @retval None
  */
  #define assert_param(expr) ((expr) ? (void)0U : assert_failed((uint8_t *)__FILE__, __LINE__))
/* Exported functions ------------------------------------------------------- */
  void assert_failed(uint8_t* file, uint32_t line);
#else
  #define assert_param(expr) ((void)0U)
#endif /* USE_FULL_ASSERT */

#ifdef __cplusplus
}
#endif

#endif /* __STM32F7xx_HAL_CONF_H */

NetworkInterface.h

#include "NetworkInterface.h"

static const uint8_t ucIPAddress[ 4 ] = { 192, 168, 0, 201 };
static const uint8_t ucNetMask[ 4 ] = { 255, 255, 255, 0 };
static const uint8_t ucGatewayAddress[ 4 ] = { 192, 168, 0, 1 };

static const uint8_t ucDNSServerAddress[ 4 ] = { 1, 1, 1, 1 };

static uint8_t ucMACAddress[ 6 ] = { 0x02, 0x12, 0x22, 0x33, 0x44, 0x55 };

void app_initNetwork(void) {
    FreeRTOS_IPInit( ucIPAddress,
                     ucNetMask,
                     ucGatewayAddress,
                     ucDNSServerAddress,
                     ucMACAddress );
}

And here is my Makefile:

stm32f7xx_hal_conf_template.h

##########################################################################################################################
# File automatically-generated by tool: [projectgenerator] version: [3.19.2] date: [Mon Oct 30 14:28:14 CET 2023]
##########################################################################################################################

# ------------------------------------------------
# Generic Makefile (based on gcc)
#
# ChangeLog :
#	2017-02-10 - Several enhancements + project update mode
#   2015-07-22 - first version
# ------------------------------------------------

######################################
# target
######################################
TARGET = stm32f7_freertos_plus_template


######################################
# building variables
######################################
# debug build?
DEBUG = 1
# optimization
OPT = -Og


#######################################
# paths
#######################################
# Build path
BUILD_DIR = build

######################################
# source
######################################
# C sources, core app
C_SOURCES = Core/Src/application/main.c \
Core/Src/application/app_freertos_tasks.c \
Core/Src/application/app_network.c \
Core/Src/application/app_stm32hal_error_handler.c \
Core/Src/application/app_stm32hal.c

# C sources, core freertos & stm32hal
C_SOURCES += Core/Src/freertos/freertos_callback.c \
Core/Src/stm32hal/stm32f7xx_it.c \
Core/Src/stm32hal/stm32f7xx_hal_msp.c \
Core/Src/stm32hal/stm32f7xx_hal_timebase_tim.c \
Core/Src/stm32hal/system_stm32f7xx.c

# Drivers
C_SOURCES += \
Drivers/stm32f7xx_hal_driver/Src/stm32f7xx_hal_cortex.c \
Drivers/stm32f7xx_hal_driver/Src/stm32f7xx_hal_rcc.c \
Drivers/stm32f7xx_hal_driver/Src/stm32f7xx_hal_rcc_ex.c \
Drivers/stm32f7xx_hal_driver/Src/stm32f7xx_hal_flash.c \
Drivers/stm32f7xx_hal_driver/Src/stm32f7xx_hal_flash_ex.c \
Drivers/stm32f7xx_hal_driver/Src/stm32f7xx_hal_gpio.c \
Drivers/stm32f7xx_hal_driver/Src/stm32f7xx_hal_dma.c \
Drivers/stm32f7xx_hal_driver/Src/stm32f7xx_hal_dma_ex.c \
Drivers/stm32f7xx_hal_driver/Src/stm32f7xx_hal_pwr.c \
Drivers/stm32f7xx_hal_driver/Src/stm32f7xx_hal_pwr_ex.c \
Drivers/stm32f7xx_hal_driver/Src/stm32f7xx_hal.c \
Drivers/stm32f7xx_hal_driver/Src/stm32f7xx_hal_i2c.c \
Drivers/stm32f7xx_hal_driver/Src/stm32f7xx_hal_i2c_ex.c \
Drivers/stm32f7xx_hal_driver/Src/stm32f7xx_hal_eth.c \
Drivers/stm32f7xx_hal_driver/Src/stm32f7xx_hal_exti.c \
Drivers/stm32f7xx_hal_driver/Src/stm32f7xx_hal_tim.c \
Drivers/stm32f7xx_hal_driver/Src/stm32f7xx_hal_tim_ex.c \
Drivers/stm32f7xx_hal_driver/Src/stm32f7xx_hal_uart.c \
Drivers/stm32f7xx_hal_driver/Src/stm32f7xx_hal_uart_ex.c \
Drivers/stm32f7xx_hal_driver/Src/stm32f7xx_hal_rng.c \
Drivers/CMSIS_RTOS_V2/cmsis_os2.c

# FreeRTOS
C_SOURCES += \
FreeRTOS/FreeRTOS/Source/croutine.c \
FreeRTOS/FreeRTOS/Source/event_groups.c \
FreeRTOS/FreeRTOS/Source/list.c \
FreeRTOS/FreeRTOS/Source/queue.c \
FreeRTOS/FreeRTOS/Source/stream_buffer.c \
FreeRTOS/FreeRTOS/Source/tasks.c \
FreeRTOS/FreeRTOS/Source/timers.c \
FreeRTOS/FreeRTOS/Source/portable/MemMang/heap_4.c \
FreeRTOS/FreeRTOS/Source/portable/GCC/ARM_CM7/r0p1/port.c

# FreeRTOS-Plus TCP
C_SOURCES += FreeRTOS/FreeRTOS-Plus/Source/FreeRTOS-Plus-TCP/source/FreeRTOS_ARP.c \
FreeRTOS/FreeRTOS-Plus/Source/FreeRTOS-Plus-TCP/source/FreeRTOS_BitConfig.c \
FreeRTOS/FreeRTOS-Plus/Source/FreeRTOS-Plus-TCP/source/FreeRTOS_DHCP.c \
FreeRTOS/FreeRTOS-Plus/Source/FreeRTOS-Plus-TCP/source/FreeRTOS_DHCPv6.c \
FreeRTOS/FreeRTOS-Plus/Source/FreeRTOS-Plus-TCP/source/FreeRTOS_DNS.c \
FreeRTOS/FreeRTOS-Plus/Source/FreeRTOS-Plus-TCP/source/FreeRTOS_DNS_Cache.c \
FreeRTOS/FreeRTOS-Plus/Source/FreeRTOS-Plus-TCP/source/FreeRTOS_DNS_Callback.c \
FreeRTOS/FreeRTOS-Plus/Source/FreeRTOS-Plus-TCP/source/FreeRTOS_DNS_Networking.c \
FreeRTOS/FreeRTOS-Plus/Source/FreeRTOS-Plus-TCP/source/FreeRTOS_DNS_Parser.c \
FreeRTOS/FreeRTOS-Plus/Source/FreeRTOS-Plus-TCP/source/FreeRTOS_ICMP.c \
FreeRTOS/FreeRTOS-Plus/Source/FreeRTOS-Plus-TCP/source/FreeRTOS_IP.c \
FreeRTOS/FreeRTOS-Plus/Source/FreeRTOS-Plus-TCP/source/FreeRTOS_IP_Timers.c \
FreeRTOS/FreeRTOS-Plus/Source/FreeRTOS-Plus-TCP/source/FreeRTOS_IP_Utils.c \
FreeRTOS/FreeRTOS-Plus/Source/FreeRTOS-Plus-TCP/source/FreeRTOS_IPv4.c \
FreeRTOS/FreeRTOS-Plus/Source/FreeRTOS-Plus-TCP/source/FreeRTOS_IPv4_Sockets.c \
FreeRTOS/FreeRTOS-Plus/Source/FreeRTOS-Plus-TCP/source/FreeRTOS_IPv4_Utils.c \
FreeRTOS/FreeRTOS-Plus/Source/FreeRTOS-Plus-TCP/source/FreeRTOS_IPv6.c \
FreeRTOS/FreeRTOS-Plus/Source/FreeRTOS-Plus-TCP/source/FreeRTOS_IPv6_Sockets.c \
FreeRTOS/FreeRTOS-Plus/Source/FreeRTOS-Plus-TCP/source/FreeRTOS_IPv6_Utils.c \
FreeRTOS/FreeRTOS-Plus/Source/FreeRTOS-Plus-TCP/source/FreeRTOS_ND.c \
FreeRTOS/FreeRTOS-Plus/Source/FreeRTOS-Plus-TCP/source/FreeRTOS_RA.c \
FreeRTOS/FreeRTOS-Plus/Source/FreeRTOS-Plus-TCP/source/FreeRTOS_Routing.c \
FreeRTOS/FreeRTOS-Plus/Source/FreeRTOS-Plus-TCP/source/FreeRTOS_Sockets.c \
FreeRTOS/FreeRTOS-Plus/Source/FreeRTOS-Plus-TCP/source/FreeRTOS_Stream_Buffer.c \
FreeRTOS/FreeRTOS-Plus/Source/FreeRTOS-Plus-TCP/source/FreeRTOS_TCP_IP.c \
FreeRTOS/FreeRTOS-Plus/Source/FreeRTOS-Plus-TCP/source/FreeRTOS_TCP_IP_IPv4.c \
FreeRTOS/FreeRTOS-Plus/Source/FreeRTOS-Plus-TCP/source/FreeRTOS_TCP_IP_IPv6.c \
FreeRTOS/FreeRTOS-Plus/Source/FreeRTOS-Plus-TCP/source/FreeRTOS_TCP_Reception.c \
FreeRTOS/FreeRTOS-Plus/Source/FreeRTOS-Plus-TCP/source/FreeRTOS_TCP_State_Handling.c \
FreeRTOS/FreeRTOS-Plus/Source/FreeRTOS-Plus-TCP/source/FreeRTOS_TCP_State_Handling_IPv4.c \
FreeRTOS/FreeRTOS-Plus/Source/FreeRTOS-Plus-TCP/source/FreeRTOS_TCP_State_Handling_IPv6.c \
FreeRTOS/FreeRTOS-Plus/Source/FreeRTOS-Plus-TCP/source/FreeRTOS_TCP_Transmission.c \
FreeRTOS/FreeRTOS-Plus/Source/FreeRTOS-Plus-TCP/source/FreeRTOS_TCP_Transmission_IPv4.c \
FreeRTOS/FreeRTOS-Plus/Source/FreeRTOS-Plus-TCP/source/FreeRTOS_TCP_Transmission_IPv6.c \
FreeRTOS/FreeRTOS-Plus/Source/FreeRTOS-Plus-TCP/source/FreeRTOS_TCP_Utils.c \
FreeRTOS/FreeRTOS-Plus/Source/FreeRTOS-Plus-TCP/source/FreeRTOS_TCP_Utils_IPv4.c \
FreeRTOS/FreeRTOS-Plus/Source/FreeRTOS-Plus-TCP/source/FreeRTOS_TCP_Utils_IPv6.c \
FreeRTOS/FreeRTOS-Plus/Source/FreeRTOS-Plus-TCP/source/FreeRTOS_TCP_WIN.c \
FreeRTOS/FreeRTOS-Plus/Source/FreeRTOS-Plus-TCP/source/FreeRTOS_Tiny_TCP.c \
FreeRTOS/FreeRTOS-Plus/Source/FreeRTOS-Plus-TCP/source/FreeRTOS_UDP_IP.c \
FreeRTOS/FreeRTOS-Plus/Source/FreeRTOS-Plus-TCP/source/FreeRTOS_UDP_IPv4.c \
FreeRTOS/FreeRTOS-Plus/Source/FreeRTOS-Plus-TCP/source/FreeRTOS_UDP_IPv6.c \
FreeRTOS/FreeRTOS-Plus/Source/FreeRTOS-Plus-TCP/source/portable/NetworkInterface/Common/phyHandling.c \
FreeRTOS/FreeRTOS-Plus/Source/FreeRTOS-Plus-TCP/source/portable/BufferManagement/BufferAllocation_2.c \
FreeRTOS/FreeRTOS-Plus/Source/FreeRTOS-Plus-TCP/source/portable/NetworkInterface/STM32Fxx/NetworkInterface.c
# FreeRTOS/FreeRTOS-Plus/Source/FreeRTOS-Plus-TCP/source/portable/NetworkInterface/STM32Fxx/stm32fxx_hal_eth.c

# ASM sources
ASM_SOURCES =  \
startup_stm32f779xx.s


#######################################
# binaries
#######################################
PREFIX = arm-none-eabi-
# The gcc compiler bin path can be either defined in make command via GCC_PATH variable (> make GCC_PATH=xxx)
# either it can be added to the PATH environment variable.
ifdef GCC_PATH
CC = $(GCC_PATH)/$(PREFIX)gcc
AS = $(GCC_PATH)/$(PREFIX)gcc -x assembler-with-cpp
CP = $(GCC_PATH)/$(PREFIX)objcopy
SZ = $(GCC_PATH)/$(PREFIX)size
else
CC = $(PREFIX)gcc
AS = $(PREFIX)gcc -x assembler-with-cpp
CP = $(PREFIX)objcopy
SZ = $(PREFIX)size
endif
HEX = $(CP) -O ihex
BIN = $(CP) -O binary -S
 
#######################################
# CFLAGS
#######################################
# cpu
CPU = -mcpu=cortex-m7

# fpu
FPU = -mfpu=fpv5-d16

# float-abi
FLOAT-ABI = -mfloat-abi=hard

# mcu
MCU = $(CPU) -mthumb $(FPU) $(FLOAT-ABI)

# macros for gcc
# AS defines
AS_DEFS = 

# C defines
C_DEFS =  \
-DUSE_HAL_DRIVER \
-DSTM32F779xx \
-DSTM32F7xx=1

# AS includes
AS_INCLUDES =  \
-ICore/Inc

# C includes
C_INCLUDES = \
-ICore/Inc/stm32hal \
-ICore/Inc/freertos \
-ICore/Inc/application \
-IDrivers/CMSIS/Device/ST/STM32F7xx/Include \
-IDrivers/CMSIS/Include \
-IDrivers/CMSIS_RTOS_V2 \
-IDrivers/stm32f7xx_hal_driver/Inc \
-IDrivers/stm32f7xx_hal_driver/Inc/Legacy \
-IDrivers/CMSIS/Core/Include

# freertos
C_INCLUDES += \
-IFreeRTOS/FreeRTOS/Source/include \
-IFreeRTOS/FreeRTOS/Source/portable/GCC/ARM_CM7/r0p1 \
-IFreeRTOS/FreeRTOS-Plus/Source/Utilities/logging

# freertos plus
C_INCLUDES += \
-IFreeRTOS/FreeRTOS-Plus/Source/FreeRTOS-Plus-TCP/source/include \
-IFreeRTOS/FreeRTOS-Plus/Source/FreeRTOS-Plus-TCP/source/portable/Compiler/GCC \
-IFreeRTOS/FreeRTOS-Plus/Source/FreeRTOS-Plus-TCP/source/portable/NetworkInterface/STM32Fxx \
-IFreeRTOS/FreeRTOS-Plus/Source/FreeRTOS-Plus-TCP/source/portable/NetworkInterface/include \
-IFreeRTOS/FreeRTOS/Demo/CORTEX_M7_STM32F7_STM32756G-EVAL_IAR_Keil/ST_Library/include

# compile gcc flags
ASFLAGS = $(MCU) $(AS_DEFS) $(AS_INCLUDES) $(OPT) -Wall -fdata-sections -ffunction-sections

CFLAGS += $(MCU) $(C_DEFS) $(C_INCLUDES) $(OPT) -Wall -fdata-sections -ffunction-sections

ifeq ($(DEBUG), 1)
CFLAGS += -g -gdwarf-2
endif


# Generate dependency information
CFLAGS += -MMD -MP -MF"$(@:%.o=%.d)"


#######################################
# LDFLAGS
#######################################
# link script
LDSCRIPT = STM32F779NIHx_FLASH.ld

# libraries
LIBS = -lc -lm -lrdimon 
LIBDIR = 
LDFLAGS = $(MCU) -specs=rdimon.specs -T$(LDSCRIPT) $(LIBDIR) $(LIBS) -Wl,-Map=$(BUILD_DIR)/$(TARGET).map,--cref -Wl,--gc-sections

# default action: build all
all: $(BUILD_DIR)/$(TARGET).elf $(BUILD_DIR)/$(TARGET).hex $(BUILD_DIR)/$(TARGET).bin


#######################################
# build the application
#######################################
# list of objects
OBJECTS = $(addprefix $(BUILD_DIR)/,$(notdir $(C_SOURCES:.c=.o)))
vpath %.c $(sort $(dir $(C_SOURCES)))
# list of ASM program objects
OBJECTS += $(addprefix $(BUILD_DIR)/,$(notdir $(ASM_SOURCES:.s=.o)))
vpath %.s $(sort $(dir $(ASM_SOURCES)))

$(BUILD_DIR)/%.o: %.c Makefile | $(BUILD_DIR) 
	$(CC) -c $(CFLAGS) -Wa,-a,-ad,-alms=$(BUILD_DIR)/$(notdir $(<:.c=.lst)) $< -o $@

$(BUILD_DIR)/%.o: %.s Makefile | $(BUILD_DIR)
	$(AS) -c $(CFLAGS) $< -o $@

$(BUILD_DIR)/$(TARGET).elf: $(OBJECTS) Makefile
	$(CC) $(OBJECTS) $(LDFLAGS) -o $@
	$(SZ) $@

$(BUILD_DIR)/%.hex: $(BUILD_DIR)/%.elf | $(BUILD_DIR)
	$(HEX) $< $@
	
$(BUILD_DIR)/%.bin: $(BUILD_DIR)/%.elf | $(BUILD_DIR)
	$(BIN) $< $@	
	
$(BUILD_DIR):
	mkdir $@		

#######################################
# clean up
#######################################
clean:
	-rm -fR $(BUILD_DIR)
  
#######################################
# dependencies
#######################################
-include $(wildcard $(BUILD_DIR)/*.d)

# *** EOF ***

Do you have any suggestions or insights into what might be wrong or what I should check?

Thank you in advance for your help!

ActoryOu · January 8, 2024, 2:35am

Hi @Matio,
Welcome to FreeRTOS community!

Actually FreeRTOS-Plus-TCP always triggers eNetworkDownEvent once to initialize the network interface/stack in prvIPTask_Initialise(). I’m not sure if that’s the scenario you’re facing. Have you tried to ping any interface after that? How do you know that network down is triggered by prvProcessIPEventsAndTimers()?

Thank you.

htibosch · January 8, 2024, 6:34am

@Matio, thanks for contacting the FreeRTOS forum.

Can you make sure that FreeRTOS_printf() can send logging?

If you include printf-stdarg.c into your application, you will see proper formatting of the IP-addresses.

First of all I’d like to see if your PHY can be initialised. And if it is not initialised, you should check the hardware configuration:

/* This is a callback function. */

void HAL_ETH_MspInit( ETH_HandleTypeDef * heth )
{
}

The above function sets the properties of all GPIO’s and their peripheral functions. Try to compare your implementation with a version that is known to work on your hardware.

Also make sure that the weak version of HAL_ETH_MspInit() is not called.

PS. Are you using STM32Fxx\NetworkInterface.c, or the newer generic version STM32\NetworkInterface.c, which is still under development?

WireShark can be a great tool. Your DUT will always send gratuitous ARP requests visible in WireShark. Also, when DHCP is enabled, you should see DHCP requests from your STM32F7x.

I plan to eventually implement the MQTT stack, but I believe I need to establish a working TCP connection first.

That would be great, and your assumption is indeed correct, you’ll first need a working TCP/IP stack. But that shouldn’t be too difficult.

Tip: when testing, make the following change here:

static BaseType_t prvNetworkInterfaceInput( void )
{
     ...
     /* See if this packet must be handled. */
-    xAccepted = xMayAcceptPacket( pucBuffer );
+    xAccepted = pdTRUE;
     ...
}

I haven’t looked into xMayAcceptPacket() yet, but it seems to return false too often.

Matio · January 8, 2024, 7:45pm

Hello @ActoryOu and @htibosch, thank you for your messages!

@ActoryOu,

The eNetworkDownEvent triggers multiple times, not just once. I’ve tried placing breakpoints on eNetworkRxEvent and eDHCPEvent (even though I’m not in DHCP mode), but the code doesn’t stop at those breakpoints. I’m confident it only triggers on eNetworkDownEvent because it does so repeatedly when I place a breakpoint inside its case.

Yes, I attempted to ping the board and even scanned it with nmap, but there was no response from the board’s side.

I don’t see prvIPTask_Initialise() called anywhere in my code. At first glance, it seems to be called in the function prvIPTask(), but this function isn’t called or passed as an argument to any other function. It’s only used in FreeRTOS unit tests.

@htibosch,

Indeed, I hadn’t set ipconfigHAS_PRINTF to 1, so I have now done that.

I added the printf-stdarg.c found in the Demo project CORTEX_STM32F103_Primer_GCC included in FreeRTOS sources.

The file I use as NetworkInterface.c is this one:
FreeRTOS-Plus/Source/FreeRTOS-Plus-TCP/source/portable/NetworkInterface/STM32Fxx/NetworkInterface.c

Ethernet pins seem to be set, generated with Cube MX when I created the project:

void HAL_ETH_MspInit(ETH_HandleTypeDef* heth)
{
  GPIO_InitTypeDef GPIO_InitStruct = {0};
  if(heth->Instance==ETH)
  {
  /* USER CODE BEGIN ETH_MspInit 0 */

  /* USER CODE END ETH_MspInit 0 */
    /* Peripheral clock enable */
    __HAL_RCC_ETH_CLK_ENABLE();

    __HAL_RCC_GPIOE_CLK_ENABLE();
    __HAL_RCC_GPIOG_CLK_ENABLE();
    __HAL_RCC_GPIOH_CLK_ENABLE();
    __HAL_RCC_GPIOC_CLK_ENABLE();
    __HAL_RCC_GPIOA_CLK_ENABLE();
    /**ETH GPIO Configuration
    PE2     ------> ETH_TXD3
    PG14     ------> ETH_TXD1
    PG13     ------> ETH_TXD0
    PG11     ------> ETH_TX_EN
    PH3     ------> ETH_COL
    PC3     ------> ETH_TX_CLK
    PC1     ------> ETH_MDC
    PC2     ------> ETH_TXD2
    PA1     ------> ETH_RX_CLK
    PA0/WKUP     ------> ETH_CRS
    PC4     ------> ETH_RXD0
    PH7     ------> ETH_RXD3
    PA2     ------> ETH_MDIO
    PC5     ------> ETH_RXD1
    PH6     ------> ETH_RXD2
    PA7     ------> ETH_RX_DV
    */
    GPIO_InitStruct.Pin = GPIO_PIN_2;
    GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
    GPIO_InitStruct.Pull = GPIO_NOPULL;
    GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_VERY_HIGH;
    GPIO_InitStruct.Alternate = GPIO_AF11_ETH;
    HAL_GPIO_Init(GPIOE, &GPIO_InitStruct);

    GPIO_InitStruct.Pin = GPIO_PIN_14|GPIO_PIN_13|GPIO_PIN_11;
    GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
    GPIO_InitStruct.Pull = GPIO_NOPULL;
    GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_VERY_HIGH;
    GPIO_InitStruct.Alternate = GPIO_AF11_ETH;
    HAL_GPIO_Init(GPIOG, &GPIO_InitStruct);

    GPIO_InitStruct.Pin = GPIO_PIN_3|GPIO_PIN_7|GPIO_PIN_6;
    GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
    GPIO_InitStruct.Pull = GPIO_NOPULL;
    GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_VERY_HIGH;
    GPIO_InitStruct.Alternate = GPIO_AF11_ETH;
    HAL_GPIO_Init(GPIOH, &GPIO_InitStruct);

    GPIO_InitStruct.Pin = GPIO_PIN_3|GPIO_PIN_1|GPIO_PIN_2|GPIO_PIN_4
                          |GPIO_PIN_5;
    GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
    GPIO_InitStruct.Pull = GPIO_NOPULL;
    GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_VERY_HIGH;
    GPIO_InitStruct.Alternate = GPIO_AF11_ETH;
    HAL_GPIO_Init(GPIOC, &GPIO_InitStruct);

    GPIO_InitStruct.Pin = GPIO_PIN_1|GPIO_PIN_0|GPIO_PIN_2|GPIO_PIN_7;
    GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
    GPIO_InitStruct.Pull = GPIO_NOPULL;
    GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_VERY_HIGH;
    GPIO_InitStruct.Alternate = GPIO_AF11_ETH;
    HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);

  /* USER CODE BEGIN ETH_MspInit 1 */

  /* USER CODE END ETH_MspInit 1 */
  }

}

I also made this modification in the NetworkInterface.c file:

// xAccepted = xMayAcceptPacket( pucBuffer );
xAccepted = pdTRUE;

After these verifications and modifications, the log looks like this:

prvIPTask started
prvEthernetUpdateConfig: LS mask 00 Force 1

It still doesn’t respond to ping, and I see no ARP packets from the IP I set for my STM32 board (192.168.0.201) with Wireshark.

I put a breakpoint on the line where I modified the value of the xAccepted variable, but it doesn’t stop at the breakpoint.

I’m not sure how to interpret the new line in the logs LS mask 00 Force 1.

Does this make you think of something?

Sorry for my late response; I can only work on this in the evenings and that too for a limited time.

ActoryOu · January 9, 2024, 3:12am

Hi,
Thanks for your elaboration.

From your log prvIPTask started, we know that prvIPTask() runs correctly. But it shouldn’t trigger network down event multiple times. As @htibosch said, that might be triggered by xMayAcceptPacket returning false.

Are you pinging device from other host (e.g. laptop)? Is there any log showing on device? Is it possible to share that with us?

Thank you.

htibosch · January 9, 2024, 10:02am

The datasheet talks about three jumpers:

Looking at your HAL_ETH_MspInit():

PC1        --> ETH_MDC
PA2        --> ETH_MDIO
PA8 (MCO)  --> not connected

which means that :

JP8 connects 2 with 3
JP4 connects 2 with 1

JP12 connects 2 with 1 (use 25Mhz crystal).

How are they connected?

What is the value of ipconfigUSE_RMII? It looks like you have to define:

#define  ipconfigUSE_RMII    0

because I do not see any RMII (reduced) connections.

Your HAL_ETH_MspInit() function looks OK, provided that you want to use the MII (not RMII) interface.

When this doesn’t help, it is time to look at the clocks.

Matio · January 9, 2024, 8:05pm

@ActoryOu,

Yes, I am pinging from my laptop.

I can share some logs:

The only potentially relevant thing in the build step is this warning from the linker:

warning: build/stm32f7_freertos_plus_template.elf has a LOAD segment with RWX permissions

At run step, I have these logs from openOCD:

xPack Open On-Chip Debugger 0.12.0-01004-g9ea7f3d64-dirty (2023-01-30-15:03)
Licensed under GNU GPL v2
For bug reports, read
        http://openocd.org/doc/doxygen/bugs.html
CDLiveWatchSetup
Info : auto-selecting first available session transport "hla_swd". To override use 'transport select <transport>'.
Info : The selected transport took over low-level target control. The results might differ compared to plain JTAG/SWD
Info : Listening on port 50001 for tcl connections
Info : Listening on port 50002 for telnet connections
Info : clock speed 2000 kHz
Info : STLINK V2J41M27 (API v2) VID:PID 0483:374B
Info : Target voltage: 3.270993
Info : [stm32f7x.cpu] Cortex-M7 r1p0 processor detected
Info : [stm32f7x.cpu] target has 8 breakpoints, 4 watchpoints
Info : starting gdb server for stm32f7x.cpu on 50000
Info : Listening on port 50000 for gdb connections
Info : accepting 'gdb' connection on tcp/50000
[stm32f7x.cpu] halted due to breakpoint, current mode: Thread 
xPSR: 0x61000000 pc: 0x0800a296 psp: 0x20017758
Info : device id = 0x10016451
Info : flash size = 2048 KiB
Info : Single Bank 2048 kiB STM32F76x/77x found
Info : flash size = 1024 bytes
Info : Unable to match requested speed 2000 kHz, using 1800 kHz
Info : Unable to match requested speed 2000 kHz, using 1800 kHz
[stm32f7x.cpu] halted due to debug-request, current mode: Thread 
xPSR: 0x01000000 pc: 0x0800b474 msp: 0x20080000
Info : Unable to match requested speed 2000 kHz, using 1800 kHz
Info : Unable to match requested speed 2000 kHz, using 1800 kHz
[stm32f7x.cpu] halted due to debug-request, current mode: Thread 
xPSR: 0x01000000 pc: 0x0800b474 msp: 0x20080000
Info : Unable to match requested speed 8000 kHz, using 4000 kHz
Info : Unable to match requested speed 8000 kHz, using 4000 kHz
Info : Padding image section 0 at 0x080001f8 with 8 bytes
Info : Unable to match requested speed 2000 kHz, using 1800 kHz
Info : Unable to match requested speed 2000 kHz, using 1800 kHz
[stm32f7x.cpu] halted due to debug-request, current mode: Thread 
xPSR: 0x01000000 pc: 0x0800b474 msp: 0x20080000
Info : Unable to match requested speed 2000 kHz, using 1800 kHz
Info : Unable to match requested speed 2000 kHz, using 1800 kHz
[stm32f7x.cpu] halted due to debug-request, current mode: Thread 
xPSR: 0x01000000 pc: 0x0800b474 msp: 0x20080000

@htibosch,

Regarding the jumpers, I think you might have mixed up JP8 and JP4 pin configurations.

On my board, the jumper config is:

JP8(1, 2): MII_MDC/PC1 
JP4(2, 3): MII_MDIO/PA2
JP12(1, 2): CRYSTAL side

It looks good to me.

Regarding the RMII config, ipconfigUSE_RMII is still set to 0:

#define  ipconfigUSE_RMII    0

About the clocks, I want to highlight the message from OpenOCD. I’m not sure if it’s relevant or not. I don’t remember if I had the same clock messages with LWIP.

I can provide my clock init function, which was generated by CubeMX:

static void systemClockConfig(void)
{
	RCC_OscInitTypeDef RCC_OscInitStruct = {0};
	RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};

	__HAL_RCC_PWR_CLK_ENABLE();
	__HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE1);

	RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSI;
	RCC_OscInitStruct.HSIState = RCC_HSI_ON;
	RCC_OscInitStruct.HSICalibrationValue = RCC_HSICALIBRATION_DEFAULT;
	RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
	RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSI;
	RCC_OscInitStruct.PLL.PLLM = 8;
	RCC_OscInitStruct.PLL.PLLN = 216;
	RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV2;
	RCC_OscInitStruct.PLL.PLLQ = 2;
	RCC_OscInitStruct.PLL.PLLR = 2;
	if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
	{
		Error_Handler();
	}

	if (HAL_PWREx_EnableOverDrive() != HAL_OK)
	{
		Error_Handler();
	}

	RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK | RCC_CLOCKTYPE_SYSCLK | RCC_CLOCKTYPE_PCLK1 | RCC_CLOCKTYPE_PCLK2;
	RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
	RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
	RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV4;
	RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV2;

	if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_7) != HAL_OK)
	{
		Error_Handler();
	}
}

I also want to share with you my implementation of the FreeRTOS callbacks. I’m not entirely confident about what I’ve done:

#include "FreeRTOS_IP.h"
#include "stm32f7xx_hal.h"
#include "stm32f7xx_hal_def.h"
#include "stm32f7xx_hal_rng.h"

#include <stdarg.h>
#include <string.h>
#include <stdlib.h>

extern RNG_HandleTypeDef hRng;
extern UART_HandleTypeDef huart1;

// read this again for implementation : https://www.freertos.org/FreeRTOS-Plus/FreeRTOS_Plus_TCP/API/vApplicationIPNetworkEventHook.html
void vApplicationIPNetworkEventHook( eIPCallbackEvent_t eNetworkEvent ) {
    (void) eNetworkEvent;
    static BaseType_t xTasksAlreadyCreated = pdFALSE;
    if( eNetworkEvent == eNetworkUp )
    {
        if( xTasksAlreadyCreated == pdFALSE )
        {
            xTasksAlreadyCreated = pdTRUE;
        }
    }
}

// generate random number. See in doc of STM32 how to. 
// read this again  for implementation : https://www.freertos.org/FreeRTOS-Plus/FreeRTOS_Plus_TCP/API/xApplicationGetRandomNumber.html
BaseType_t xApplicationGetRandomNumber( uint32_t * pulNumber ) {
    if (HAL_RNG_GenerateRandomNumber(&hRng, pulNumber) == HAL_OK) return pdPASS;
    else return pdFAIL;
}

// read this again  for implementation : https://www.freertos.org/FreeRTOS-Plus/FreeRTOS_Plus_TCP/API/ulApplicationGetNextSequenceNumber.html
uint32_t ulApplicationGetNextSequenceNumber( uint32_t ulSourceAddress,
                                             uint16_t usSourcePort,
                                             uint32_t ulDestinationAddress,
                                             uint16_t usDestinationPort )
{
    (void) ulSourceAddress;
    (void) usSourcePort;
    (void) ulDestinationAddress;
    (void) usDestinationPort;

    uint32_t randomNumber = 0;
    xApplicationGetRandomNumber( &randomNumber );
    return randomNumber;
}

// FYI: log on uart 1
void vLoggingPrintf( const char * pcFormat, ... )
{
	va_list args_list;
	va_start(args_list, pcFormat);
	int final_length = vsnprintf(NULL, 0, pcFormat, args_list) + 1;
	va_end(args_list);

	uint8_t* final_string = malloc(final_length);
	if(final_string == NULL) {
		return;
	}

	va_start(args_list, pcFormat);
	vsnprintf((char *)final_string, final_length, pcFormat, args_list);
	va_end(args_list);

	HAL_UART_Transmit(&huart1, final_string, final_length, HAL_MAX_DELAY);

	free(final_string);
    HAL_UART_Transmit(&huart1, "\r", 2, HAL_MAX_DELAY);
}

An additional piece of information: the green LED on the Ethernet port is on, and the orange LED is blinking slowly when connected to my switch/PC.

I assume the clock configuration is correct, but I’m uncertain whether the inability to reach the requested frequency is a significant issue or not. What are your thoughts on this?

RAc · January 9, 2024, 9:58pm

Breakpoints on Cortex PODs can be very frustrating as code optimization may make it impossible for the debugger to find the correct assembly code that corresponds to the source. If you want to reliably determine if a certain line of code is encountered, you can do either of the following:

Add the following snippet of code to the location you wish to break into:

{
volatile unsigned int aDummy = 42;
}

and set the breakpoint onto that line

Add the following code snippet:

__asm(" bkpt"); // this will always break, but you can rerun from here

Increment a global (possibly volatile) variable and inspect the variable in a real time watch window
Open an assembly window, inspect the function to break into and try to locate an assembly line address to set a debugger break point to.
Try setting a DWT trace point.

htibosch · January 10, 2024, 8:51am

I just see that you have ipconfigIPv4_BACKWARD_COMPATIBLE defined. Does that mean that you use “V4.0.x”?

Can you confirm that the function FreeRTOS_IPInit() is called?
That function will call FreeRTOS_IPInit_Multi(), did you see that happening?

Can you step through that function?

Can you step through xSTM32F_NetworkInterfaceInitialise(), and see if vMACBProbePhy() is called? What happens?

Have you defined configUSE_MALLOC_FAILED_HOOK as 1, and have you defined the function vApplicationMallocFailedHook()?

void vApplicationMallocFailedHook()
{
	configASSERT( 0 );
}

Matio · January 11, 2024, 7:07pm

Hi @RAc, thanks for your assistance.

I’m not certain if these suggestions apply to my situation because I build with the -Og option. Could you please confirm?

I have another question: I’m unsure about the necessity of using a volatile variable for debugging. Could you explain why it’s needed?

In any case, I plan to start using the variable incrementation method for debugging, alongside the conventional debugging approach. I’ll share my findings once I’ve done so. Thanks!

Hi @htibosch,

When I build with #define ipconfigIPv4_BACKWARD_COMPATIBLE 0, I encounter a build error:

/home/matio/.config/Code/User/globalStorage/bmd.stm32-for-vscode/@xpack-dev-tools/arm-none-eabi-gcc/12.2.1-1.2.1/.content/bin/../lib/gcc/arm-none-eabi/12.2.1/../../../../arm-none-eabi/bin/ld: build/app_network.o: in function `app_initNetwork':
/home/matio/Workspace/Projects/software/stm32f7_freertos_plus_template/Core/Src/application/app_network.c:12: undefined reference to `FreeRTOS_IPInit'

Regarding the version, I found this in FreeRTOS_IP.h:

/* Constants defining the current version of the FreeRTOS+TCP
 * network stack. */
#define ipFR_TCP_VERSION_NUMBER      "V4.0.999"
#define ipFR_TCP_VERSION_MAJOR       4
#define ipFR_TCP_VERSION_MINOR       0
/* Development builds are always version 999. */

I also have the commit number of the repos I used as submodules:

FreeRTOS: 1114e8f39b98670b97d98a078a8c612e77ee3eb4
HAL: 27458ea876aabd8fd568c5e2a8a3448f082e2817 (corresponding to version v1.2.10)

I just realized that adding the repo as a submodule in the master branch without checking if I’m on a stable commit might not have been a good idea… I should have checked out a stable version tag.
I’ll try to reconfigure my project with another commit as soon as possible.

Another point in my setup that I have doubts about:

In the readme.md file in FreeRTOS-Plus/Source/FreeRTOS-Plus-TCP/source/portable/NetworkInterface/STM32Fxx, there are these lines:

The code of stm32fxx_hal_eth.c is based on the ETH drivers as provided by ST.

These modules should be included:
- portable/NetworkInterface/STM32Fxx/NetworkInterface.c
- portable/NetworkInterface/STM32Fxx/stm32fxx_hal_eth.c

However, for the stm32fxx_hal_eth.c, I’m not using the one provided with FreeRTOS but the one provided with my ST submodule, stm32f7xx_hal_driver/Src/stm32f7xx_hal_eth.c. At first glance, I don’t see any differences in behavior, but maybe it’s not a good idea, and I should use the file provided with FreeRTOS. What are your thoughts on this?

I debugged inside FreeRTOS_IPInit(), and FreeRTOS_IPInit_Multi() is called. Everything seems to initialize as it should, and I don’t see anything unusual.

There are no calls to vMACBProbePhy() inside xSTM32F_NetworkInterfaceInitialize().

I hadn’t defined configUSE_MALLOC_FAILED_HOOK, so I just did it and declared vApplicationMallocFailedHook(). I put a breakpoint inside the function, but it didn’t break in it.

I’ll post an update message when I’ve checked out a stable version of my FreeRTOS submodule. I hope it will solve my problems!

RAc · January 11, 2024, 9:12pm

By the very definition of volatile: The compiler will not attempt to subject volatile variables to optimization, so you can be sure that this code fragment yields existing code which a debugger can very likely locate and thus be able to apply a breakpoint at. If you do not use volatile here, you risk the compiler throwing away the entire code block, so again, nothing to break at.

htibosch · January 12, 2024, 5:54am

I was assuming that you are using the source files from portable, as described in readme.md. That explains everything.

I am amazed that you could get it compiled without warnings or errors.

Can you please hide (rename) the xxx_hal_eth.h files in the ST library, just to make sure that the modified header files from portable/NetworkInterface will be used.

I think that you will have more positive results when using the modified driver stm32fxx_hal_eth.c.
That module will call vMACBProbePhy() when it has to.

RAc · January 12, 2024, 7:17am

From my understanding, -Og is not the same as -O0, and even -O0 may not suppress things like inlining and loop unfolding which are some of the issues that make debugger writing for Cortex M PODs truly challenging…

htibosch · January 17, 2024, 2:34am

@Matio, did you manage to get your STM32F779 running when using the right driver?

Matio · January 17, 2024, 7:45am

@htibosch, sorry, it takes me some time to respond, but I need to try something before updating the status on this topic.
I’ll post here soon to provide an update, I promise.

htibosch · January 17, 2024, 7:56am

No worries, take it easy. I was just curious how things are going.

Matio · January 21, 2024, 11:13pm

Hello all,

I apologize for the delay in my response. I didn’t have the time to work on it this week.

I attempted two things.

-First, I tried to build the LTS version of FreeRTOS, but I encountered some issues.

The sources didn’t build until I added #include "FreeRTOS_IP.h" in the file stm32f7_freertos_plus_template/FreeRTOS-LTS/FreeRTOS/FreeRTOS-Plus-TCP/source/include/NetworkInterface.h.

I’m quite surprised that I had to modify the sources in the LTS version. Is this normal? This file is different in the current version of FreeRTOS. The file NetworkInterface.h already includes the line #include "FreeRTOS_IP.h", so I suppose it should be modified. Or perhaps I made a mistake?

Additionally, I received warnings during compilation, still in the LTS version:

FreeRTOS-LTS/FreeRTOS/FreeRTOS-Plus-TCP/source/FreeRTOS_TCP_Transmission.c:1317:20: warning: unused variable 'xSizeWithoutData' [-Wunused-variable]
         BaseType_t xSizeWithoutData = ( BaseType_t ) uxSize;
                    ^~~~~~~~~~~~~~~~
FreeRTOS-LTS/FreeRTOS/FreeRTOS-Plus-TCP/source/FreeRTOS_TCP_WIN.c:386:17: warning: 'vListInsertGeneric' defined but not used [-Wunused-function]
     static void vListInsertGeneric( List_t * const pxList,
                 ^~~~~~~~~~~~~~~~~~

It seemed to me like the LTS version is not better than the actual version, so I switched back to the actual version.

Regarding the changes I made in the sources from ST Ethernet drivers to FreeRTOS+ ones (portable/NetworkInterface/STM32Fxx/stm32fxx_hal_eth.c), it added some logs:

prvIPTask started
PHY ID 20005C90
xPhyReset: phyBMCR_RESET 0 ready
+TCP: advertise: 01E1 config 3100
prvEthernetUpdateConfig: LS mask 00 Force 1
Autonego ready: 00000115: full duplex 100 mbit high status
Link Status is high
Network buffers: 60 lowest 59
TX DMA buffers: lowest 2
TX DMA buffers: lowest 1
TX DMA buffers: lowest 0

The line Link Status is high sounds like the network is connected, but I still can’t ping it. I tried connecting the board to a switch and directly to my laptop.

Here are the logs when I attempted to disconnect the Ethernet cable from my STM32 board and plug it in again:

xPhyCheckLinkStatus: PHY LS now 00
prvEthernetUpdateConfig: LS mask 00 Force 0
xPhyCheckLinkStatus: PHY LS now 01
prvEthernetUpdateConfig: LS mask 01 Force 0
Autonego ready: 00000915: full duplex 100 mbit high status

-Then, I tried to put a watch on xPhyObject, and it seems to be partially filled in the void vMACBProbePhy( void ) function. Before entering vMACBProbePhy(), everything was 0:

ulPhyIDs[0]: 536894608
ulBCRValue: 12544
ulACRValue: 481
xPhyProperties: all at 3

Everything else is 0.

What are your thoughts on this?

Matio · January 22, 2024, 11:53pm

Hello, here’s a little update, and sorry for the double post.

Here’s my capture from Wireshark:

No.     Time           Source                Destination           Protocol Length Info
    249 54.835462184   192.168.0.11          192.168.0.201         ICMP     98     Echo (ping) request  id=0x02be, seq=1/256, ttl=64 (no response found!)

Frame 249: 98 bytes on wire (784 bits), 98 bytes captured (784 bits) on interface enx349971e176db, id 0
    Interface id: 0 (enx349971e176db)
        Interface name: enx349971e176db
    Encapsulation type: Ethernet (1)
    Arrival Time: Jan 22, 2024 20:50:31.562363345 CET
    [Time shift for this packet: 0.000000000 seconds]
    Epoch Time: 1705953031.562363345 seconds
    [Time delta from previous captured frame: 0.000021952 seconds]
    [Time delta from previous displayed frame: 0.000000000 seconds]
    [Time since reference or first frame: 54.835462184 seconds]
    Frame Number: 249
    Frame Length: 98 bytes (784 bits)
    Capture Length: 98 bytes (784 bits)
    [Frame is marked: False]
    [Frame is ignored: False]
    [Protocols in frame: eth:ethertype:ip:icmp:data]
    [Coloring Rule Name: ICMP]
    [Coloring Rule String: icmp || icmpv6]
Ethernet II, Src: QuantaSt_e1:76:db (34:99:71:e1:76:db), Dst: MS-NLB-PhysServer-18_22:33:44:55 (02:12:22:33:44:55)
    Destination: MS-NLB-PhysServer-18_22:33:44:55 (02:12:22:33:44:55)
        Address: MS-NLB-PhysServer-18_22:33:44:55 (02:12:22:33:44:55)
        .... ..1. .... .... .... .... = LG bit: Locally administered address (this is NOT the factory default)
        .... ...0 .... .... .... .... = IG bit: Individual address (unicast)
    Source: QuantaSt_e1:76:db (34:99:71:e1:76:db)
        Address: QuantaSt_e1:76:db (34:99:71:e1:76:db)
        .... ..0. .... .... .... .... = LG bit: Globally unique address (factory default)
        .... ...0 .... .... .... .... = IG bit: Individual address (unicast)
    Type: IPv4 (0x0800)
Internet Protocol Version 4, Src: 192.168.0.11, Dst: 192.168.0.201
    0100 .... = Version: 4
    .... 0101 = Header Length: 20 bytes (5)
    Differentiated Services Field: 0x00 (DSCP: CS0, ECN: Not-ECT)
        0000 00.. = Differentiated Services Codepoint: Default (0)
        .... ..00 = Explicit Congestion Notification: Not ECN-Capable Transport (0)
    Total Length: 84
    Identification: 0x9435 (37941)
    Flags: 0x40, Don't fragment
        0... .... = Reserved bit: Not set
        .1.. .... = Don't fragment: Set
        ..0. .... = More fragments: Not set
    Fragment Offset: 0
    Time to Live: 64
    Protocol: ICMP (1)
    Header Checksum: 0x244f [validation disabled]
    [Header checksum status: Unverified]
    Source Address: 192.168.0.11
    Destination Address: 192.168.0.201
Internet Control Message Protocol
    Type: 8 (Echo (ping) request)
    Code: 0
    Checksum: 0x1a66 [correct]
    [Checksum Status: Good]
    Identifier (BE): 702 (0x02be)
    Identifier (LE): 48642 (0xbe02)
    Sequence Number (BE): 1 (0x0001)
    Sequence Number (LE): 256 (0x0100)
    [No response seen]
        [Expert Info (Warning/Sequence): No response seen to ICMP request]
            [No response seen to ICMP request]
            [Severity level: Warning]
            [Group: Sequence]
    Timestamp from icmp data: Jan 22, 2024 20:50:29.000000000 CET
    [Timestamp from icmp data (relative): 2.562363345 seconds]
    Data (48 bytes)

0000  67 db 00 00 00 00 00 00 10 11 12 13 14 15 16 17   g...............
0010  18 19 1a 1b 1c 1d 1e 1f 20 21 22 23 24 25 26 27   ........ !"#$%&'
0020  28 29 2a 2b 2c 2d 2e 2f 30 31 32 33 34 35 36 37   ()*+,-./01234567
        Data: 67db000000000000101112131415161718191a1b1c1d1e1f202122232425262728292a2b…
        [Length: 48]

This suggests that the board is connected to the network but still doesn’t respond to pings.

It also enters the callback function vApplicationIPNetworkEventHook.

So, I tried to debug by breaking on eNetworkRxEvent and incrementing a global volatile variable, but nothing happened…

Do you have any ideas?

ActoryOu · January 23, 2024, 3:32am

Hi @Matio,

From log above, the TX part doesn’t work. So the board isn’t able to reply the packet.
But the info isn’t sufficient for me to know the cause.
If it’s possible to share your whole project via github or other website?
Then we can look into it with detail.

Thank you.

EDIT: I’d like to know the environment of your laptop. When you are trying to ping the device via Ethernet cable, does it have any other network connection (e.g. WIFI)?

Matio · January 23, 2024, 10:19am

Hello @ActoryOu,

Yes I have a repo to share, thanks for asking!


git clone git@github.com:MatioRIGARD/stm32f7_freertos_plus_template.git

cd stm32f7_freertos_plus_template

git checkout dev/debug_network

git submodule update --init --recursive

You can build with make.

Thank you for your help!