BUG in AZRTOS 6.4 NetxDuo v3.3

[mbarg.1]

in file app_netxduo.c

function static VOID nx_app_thread_entry (ULONG thread_input){ ....

/* wait until an IP address is ready */ if(tx_semaphore_get(&DHCPSemaphore, TX_WAIT_FOREVER) != TX_SUCCESS)

blocks code execution

as in function tx_semaphore_create(&DHCPSemaphore, "DHCP Semaphore", 0){

"tx_semaphore_put(&DHCPSemaphore);"

has been removed - was present in previous versions - nothing sets this semaphore

[Saket_Om]

Hello @mbarg.1 

Could you please indicate which STM32 MCU you are working on?

[mbarg.1]

BUG is on AZRTOS as such, it applies to every mcu with ethernet - we work mainly on H7, but we have designs with F4 and next design will be with H5

Bug is easily visible when you upgrade from V3.2 to v 3.3, can be verified in STM32Cube/Repository.

[Saket_Om]

Hello @mbarg.1 

Could you please be more precise. 

The function tx_semaphore_create() has not been modified in release 3.3.

[mbarg.1]

Ok

When you create a new project, the system creates file app_netxduo.c.

Inside this file, you have function 

       static VOID nx_app_thread_entry (ULONG thread_input)

and you add your code after 

/* USER CODE BEGIN Nx_App_Thread_Entry 2 */

If you create a project with version 6.4.0_3.3.0, you will never reach your code.

Why? Because 

if(tx_semaphore_get(&DHCPSemaphore, TX_WAIT_FOREVER) != TX_SUCCESS)

will prevent to get there.

In previous versions, it worked fine, as DHCP on IP address change calls ip_address_change_notify_callback and this last function put DHCPSemaphore.

Where is the difference ?

It is in function 

static VOID ip_address_change_notify_callback(NX_IP *ip_instance, VOID *ptr)

{

/* USER CODE BEGIN ip_address_change_notify_callback */

/* USER CODE END ip_address_change_notify_callback */

}

which is now empty while before had 

/* release the semaphore as soon as an IP address is available */

tx_semaphore_put(&DHCPSemaphore);

}

You can check in distribution files

C:\Users\XXX\STM32Cube\Repository\Packs\STMicroelectronics\X-CUBE-AZRTOS-H7\3.3.0\STM32CubeMX\templates\app_netxduo_c_file.ftl

vs

C:\Users\XXX\STM32Cube\Repository\Packs\STMicroelectronics\X-CUBE-AZRTOS-H7\3.2.0\STM32CubeMX\templates\app_netxduo_c_file.ftl

 Attached a project generated from .ioc - can send projects with old version, if required.