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LWIP heap memory issue in STM32F7 series

Ramachandran1992
Associate III

‎2024-12-08 08:29 PM - last edited on ‎2024-12-09 12:22 AM by

Hi, I am using STM32F767ZI for ethernet communication. I update my CUBEIDE version from 1.16.1 to 1.17 latest version. After I update my ethernet program was show HardFault_Handler() during Execution. This was working fine in the previous version(1.16.1). In the new version(1.17) It hit the fault in mem_init() at mem.c (line no. 18).

 

 

void
mem_init(void)
{
struct mem *mem;
LWIP_ASSERT("Sanity check alignment",
(SIZEOF_STRUCT_MEM & (MEM_ALIGNMENT - 1)) == 0);
/* align the heap */
ram = (u8_t *)LWIP_MEM_ALIGN(LWIP_RAM_HEAP_POINTER);
/* initialize the start of the heap */
mem = (struct mem *)(void *)ram;
mem->next = MEM_SIZE_ALIGNED;
mem->prev = 0;
mem->used = 0;
/* initialize the end of the heap */
ram_end = ptr_to_mem(MEM_SIZE_ALIGNED);
ram_end->used = 1;
ram_end->next = MEM_SIZE_ALIGNED;
ram_end->prev = MEM_SIZE_ALIGNED; (In this line the hardware fault was occur)
MEM_SANITY();
/* initialize the lowest-free pointer to the start of the heap */
lfree = (struct mem *)(void *)ram;
MEM_STATS_AVAIL(avail, MEM_SIZE_ALIGNED);
if (sys_mutex_new(&mem_mutex) != ERR_OK) {
LWIP_ASSERT("failed to create mem_mutex", 0);
}
}

 

 

In LWIP setting, the HTTPD setting -> set the MEM_SIZE(Heap) = 10*1024.

I refer compare the previous version and latest version lwipopts.h file. The below line was added in the header file

 

 

/*----- Default Value for F7/H7 devices: 0x30044000 -----*/
#define LWIP_RAM_HEAP_POINTER 0x30044000 (updated version).

 

 

Let's give the guidance how to rectify this error during execution.

Thank you

Ramachandran.S

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STea
ST Employee

‎2024-12-09 01:53 AM

Hello @Ramachandran1992 ,

can you compare the two projects to see what the changes that are done in code beside the:

#define LWIP_RAM_HEAP_POINTER 0x30044000

and if you can check the default Ram pointer value before migration as well .
Regards

In order to give better visibility on the answered topics, please click on Accept as Solution on the reply which solved your issue or answered your question.
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Ramachandran1992
Associate III

‎2024-12-09 03:21 AM - edited ‎2024-12-11 07:53 PM

Hi ST,

Yes, But didn't see no difference except the "LWIP_RAM_HEAP_POINTER".  please notify anything was missing from my side. It hit the  HardFault_Handler() in the mem_init() at mem.c file.
I insert the 2-version code the below code was version - 1.16.1

 

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

#include "main.h"

/*-----------------------------------------------------------------------------*/
/* Current version of LwIP supported by CubeMx: 2.1.2 -*/
/*-----------------------------------------------------------------------------*/

/* Within 'USER CODE' section, code will be kept by default at each generation */
/* USER CODE BEGIN 0 */

/* USER CODE END 0 */

#ifdef __cplusplus
 extern "C" {
#endif

/* STM32CubeMX Specific Parameters (not defined in opt.h) ---------------------*/
/* Parameters set in STM32CubeMX LwIP Configuration GUI -*/
/*----- WITH_RTOS disabled (Since FREERTOS is not set) -----*/
#define WITH_RTOS 0
/*----- CHECKSUM_BY_HARDWARE enabled -----*/
#define CHECKSUM_BY_HARDWARE 1
/*-----------------------------------------------------------------------------*/

/* LwIP Stack Parameters (modified compared to initialization value in opt.h) -*/
/* Parameters set in STM32CubeMX LwIP Configuration GUI -*/
/*----- Value in opt.h for NO_SYS: 0 -----*/
#define NO_SYS 1
/*----- Value in opt.h for SYS_LIGHTWEIGHT_PROT: 1 -----*/
#define SYS_LIGHTWEIGHT_PROT 0
/*----- Value in opt.h for MEM_ALIGNMENT: 1 -----*/
#define MEM_ALIGNMENT 4
/*----- Default Value for MEM_SIZE: 1600 ---*/
#define MEM_SIZE 10*1024
/*----- Value in opt.h for LWIP_ETHERNET: LWIP_ARP || PPPOE_SUPPORT -*/
#define LWIP_ETHERNET 1
/*----- Value in opt.h for LWIP_DNS_SECURE: (LWIP_DNS_SECURE_RAND_XID | LWIP_DNS_SECURE_NO_MULTIPLE_OUTSTANDING | LWIP_DNS_SECURE_RAND_SRC_PORT) -*/
#define LWIP_DNS_SECURE 7
/*----- Value in opt.h for TCP_SND_QUEUELEN: (4*TCP_SND_BUF + (TCP_MSS - 1))/TCP_MSS -----*/
#define TCP_SND_QUEUELEN 9
/*----- Value in opt.h for TCP_SNDLOWAT: LWIP_MIN(LWIP_MAX(((TCP_SND_BUF)/2), (2 * TCP_MSS) + 1), (TCP_SND_BUF) - 1) -*/
#define TCP_SNDLOWAT 1071
/*----- Value in opt.h for TCP_SNDQUEUELOWAT: LWIP_MAX(TCP_SND_QUEUELEN)/2, 5) -*/
#define TCP_SNDQUEUELOWAT 5
/*----- Value in opt.h for TCP_WND_UPDATE_THRESHOLD: LWIP_MIN(TCP_WND/4, TCP_MSS*4) -----*/
#define TCP_WND_UPDATE_THRESHOLD 536
/*----- Value in opt.h for LWIP_NETIF_LINK_CALLBACK: 0 -----*/
#define LWIP_NETIF_LINK_CALLBACK 1
/*----- Value in opt.h for LWIP_NETCONN: 1 -----*/
#define LWIP_NETCONN 0
/*----- Value in opt.h for LWIP_SOCKET: 1 -----*/
#define LWIP_SOCKET 0
/*----- Value in opt.h for RECV_BUFSIZE_DEFAULT: INT_MAX -----*/
#define RECV_BUFSIZE_DEFAULT 2000000000
/*----- Default Value for LWIP_HTTPD: 0 ---*/
#define LWIP_HTTPD 1
/*----- Default Value for LWIP_HTTPD_CGI: 0 ---*/
#define LWIP_HTTPD_CGI 1
/*----- Default Value for LWIP_HTTPD_SSI: 0 ---*/
#define LWIP_HTTPD_SSI 1
/*----- Value in opt.h for LWIP_STATS: 1 -----*/
#define LWIP_STATS 0
/*----- Value in opt.h for CHECKSUM_GEN_IP: 1 -----*/
#define CHECKSUM_GEN_IP 0
/*----- Value in opt.h for CHECKSUM_GEN_UDP: 1 -----*/
#define CHECKSUM_GEN_UDP 0
/*----- Value in opt.h for CHECKSUM_GEN_TCP: 1 -----*/
#define CHECKSUM_GEN_TCP 0
/*----- Value in opt.h for CHECKSUM_GEN_ICMP: 1 -----*/
#define CHECKSUM_GEN_ICMP 0
/*----- Value in opt.h for CHECKSUM_GEN_ICMP6: 1 -----*/
#define CHECKSUM_GEN_ICMP6 0
/*----- Value in opt.h for CHECKSUM_CHECK_IP: 1 -----*/
#define CHECKSUM_CHECK_IP 0
/*----- Value in opt.h for CHECKSUM_CHECK_UDP: 1 -----*/
#define CHECKSUM_CHECK_UDP 0
/*----- Value in opt.h for CHECKSUM_CHECK_TCP: 1 -----*/
#define CHECKSUM_CHECK_TCP 0
/*----- Value in opt.h for CHECKSUM_CHECK_ICMP: 1 -----*/
#define CHECKSUM_CHECK_ICMP 0
/*----- Value in opt.h for CHECKSUM_CHECK_ICMP6: 1 -----*/
#define CHECKSUM_CHECK_ICMP6 0
/*-----------------------------------------------------------------------------*/
/* USER CODE BEGIN 1 */

/* USER CODE END 1 */

#ifdef __cplusplus
}
#endif
#endif /*__LWIPOPTS__H__ */

 

the below code was version - 1.17.0

 

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

#include "main.h"

/*-----------------------------------------------------------------------------*/
/* Current version of LwIP supported by CubeMx: 2.1.2 -*/
/*-----------------------------------------------------------------------------*/

/* Within 'USER CODE' section, code will be kept by default at each generation */
/* USER CODE BEGIN 0 */

/* USER CODE END 0 */

#ifdef __cplusplus
 extern "C" {
#endif

/* STM32CubeMX Specific Parameters (not defined in opt.h) ---------------------*/
/* Parameters set in STM32CubeMX LwIP Configuration GUI -*/
/*----- WITH_RTOS disabled (Since FREERTOS is not set) -----*/
#define WITH_RTOS 0
/*----- CHECKSUM_BY_HARDWARE enabled -----*/
#define CHECKSUM_BY_HARDWARE 1
/*-----------------------------------------------------------------------------*/

/* LwIP Stack Parameters (modified compared to initialization value in opt.h) -*/
/* Parameters set in STM32CubeMX LwIP Configuration GUI -*/
/*----- Value in opt.h for NO_SYS: 0 -----*/
#define NO_SYS 1
/*----- Value in opt.h for SYS_LIGHTWEIGHT_PROT: 1 -----*/
#define SYS_LIGHTWEIGHT_PROT 0
/*----- Value in opt.h for MEM_ALIGNMENT: 1 -----*/
#define MEM_ALIGNMENT 4
/*----- Default Value for MEM_SIZE: 1600 ---*/
#define MEM_SIZE 10*1024
/*----- Default Value for F7/H7 devices: 0x30044000 -----*/
#define LWIP_RAM_HEAP_POINTER 0x30044000
/*----- Value in opt.h for LWIP_ETHERNET: LWIP_ARP || PPPOE_SUPPORT -*/
#define LWIP_ETHERNET 1
/*----- Value in opt.h for LWIP_DNS_SECURE: (LWIP_DNS_SECURE_RAND_XID | LWIP_DNS_SECURE_NO_MULTIPLE_OUTSTANDING | LWIP_DNS_SECURE_RAND_SRC_PORT) -*/
#define LWIP_DNS_SECURE 7
/*----- Value in opt.h for TCP_SND_QUEUELEN: (4*TCP_SND_BUF + (TCP_MSS - 1))/TCP_MSS -----*/
#define TCP_SND_QUEUELEN 9
/*----- Value in opt.h for TCP_SNDLOWAT: LWIP_MIN(LWIP_MAX(((TCP_SND_BUF)/2), (2 * TCP_MSS) + 1), (TCP_SND_BUF) - 1) -*/
#define TCP_SNDLOWAT 1071
/*----- Value in opt.h for TCP_SNDQUEUELOWAT: LWIP_MAX(TCP_SND_QUEUELEN)/2, 5) -*/
#define TCP_SNDQUEUELOWAT 5
/*----- Value in opt.h for TCP_WND_UPDATE_THRESHOLD: LWIP_MIN(TCP_WND/4, TCP_MSS*4) -----*/
#define TCP_WND_UPDATE_THRESHOLD 536
/*----- Value in opt.h for LWIP_NETIF_LINK_CALLBACK: 0 -----*/
#define LWIP_NETIF_LINK_CALLBACK 1
/*----- Value in opt.h for LWIP_NETCONN: 1 -----*/
#define LWIP_NETCONN 0
/*----- Value in opt.h for LWIP_SOCKET: 1 -----*/
#define LWIP_SOCKET 0
/*----- Value in opt.h for RECV_BUFSIZE_DEFAULT: INT_MAX -----*/
#define RECV_BUFSIZE_DEFAULT 2000000000
/*----- Default Value for LWIP_HTTPD: 0 ---*/
#define LWIP_HTTPD 1
/*----- Default Value for LWIP_HTTPD_CGI: 0 ---*/
#define LWIP_HTTPD_CGI 1
/*----- Default Value for LWIP_HTTPD_SSI: 0 ---*/
#define LWIP_HTTPD_SSI 1
/*----- Value in opt.h for LWIP_STATS: 1 -----*/
#define LWIP_STATS 0
/*----- Value in opt.h for CHECKSUM_GEN_IP: 1 -----*/
#define CHECKSUM_GEN_IP 0
/*----- Value in opt.h for CHECKSUM_GEN_UDP: 1 -----*/
#define CHECKSUM_GEN_UDP 0
/*----- Value in opt.h for CHECKSUM_GEN_TCP: 1 -----*/
#define CHECKSUM_GEN_TCP 0
/*----- Value in opt.h for CHECKSUM_GEN_ICMP: 1 -----*/
#define CHECKSUM_GEN_ICMP 0
/*----- Value in opt.h for CHECKSUM_GEN_ICMP6: 1 -----*/
#define CHECKSUM_GEN_ICMP6 0
/*----- Value in opt.h for CHECKSUM_CHECK_IP: 1 -----*/
#define CHECKSUM_CHECK_IP 0
/*----- Value in opt.h for CHECKSUM_CHECK_UDP: 1 -----*/
#define CHECKSUM_CHECK_UDP 0
/*----- Value in opt.h for CHECKSUM_CHECK_TCP: 1 -----*/
#define CHECKSUM_CHECK_TCP 0
/*----- Value in opt.h for CHECKSUM_CHECK_ICMP: 1 -----*/
#define CHECKSUM_CHECK_ICMP 0
/*----- Value in opt.h for CHECKSUM_CHECK_ICMP6: 1 -----*/
#define CHECKSUM_CHECK_ICMP6 0
/*-----------------------------------------------------------------------------*/
/* USER CODE BEGIN 1 */

/* USER CODE END 1 */

#ifdef __cplusplus
}
#endif
#endif /*__LWIPOPTS__H__ */

 

I compare all the programs with previous version (1.16.1) and new version (1.17.0) there was no changes in the except this HardFault_Handler(). This fault was done during program was after hit the run, this fault occurred during the execution of MX_LWIP_Init() at mem_init() at mem.c. how to rectify this fault?

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STea
ST Employee
In response to Ramachandran1992

‎2024-12-16 03:52 AM

Hello @Ramachandran1992 ,

I'm unable to reproduce the Hardfault you are referring to in your project with Firmware version 1.17 please check if there are any changes in the memory layout or in the placement of the LWIP heap in RAM.
Regards

In order to give better visibility on the answered topics, please click on Accept as Solution on the reply which solved your issue or answered your question.
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Ramachandran1992
Associate III

‎2024-12-17 08:06 AM

Hi ST,

Thanks for your quick reply. I'm sorry, but I don't know how to find the memory layout. Could you please guide me through the process of seeing and correcting it?

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