lwip - tcpecoserver - transmit data

[emre ozdemir]

Hello.

I am using an STM32H743BI processor in the project.

I am using freertos.

I have completed the connection setup from ethernet. I can ping the device and connect as tcpclient.

In the working scenario I need to send data at 100ms intervals as long as the client is connected to the client.

I am having trouble with this, after a few messages the device goes to hardfault as you can see in the picture below.

#define MEM_SIZE 10*1024
/*----- Default Value for H7 devices: 0x30044000 -----*/
#define LWIP_RAM_HEAP_POINTER 0x30004000
you can also find the whole lwipopts.h file attached.

I will also leave here the settings I made about memory.

MPU_InitStruct.Number = MPU_REGION_NUMBER2;
MPU_InitStruct.BaseAddress = 0x30004000;
MPU_InitStruct.Size = MPU_REGION_SIZE_32KB;
MPU_InitStruct.TypeExtField = MPU_TEX_LEVEL1;
MPU_InitStruct.IsShareable = MPU_ACCESS_SHAREABLE;
MPU_InitStruct.IsBufferable = MPU_ACCESS_NOT_BUFFERABLE;

HAL_MPU_ConfigRegion(&MPU_InitStruct);

I am using heap1 as freertos heap and I set the size to 200000bytes.

Thanks for your helps.

Best Regards.

EMRE

[STea]

Hello @emre ozdemir ,

I advise you to properly debug the Hardfault to know for sure what is causing your problem in the first place, this article may help you in the debug process .

Also, the code snippet for MPU config that you shared seems to be lacking.

I recommend you follow the example  STM32H7-LwIP-Examples/STM32H743_Nucleo_ETH at main · stm32-hotspot/STM32H7-LwIP-Examples (github.com)
Take special care with DMA descriptors and RX pool placement in the FLASH.ld file of your project.

Regards