STM32_timer.c HardFault in UTIL_TIMER_IRQ_Handler — NULL Callback pointer — STM32WBA55 / CubeMX 6.17.0 / FW_WBA V1.9.0

[MSaci.1]

Hello ST Community,

I would like to report a bug in the code generated by STM32CubeMX 6.17.0 for the STM32WBA55 with firmware package STM32Cube FW_WBA V1.9.0.

 

Environment

- MCU: STM32WBA55CGU6
- CubeMX: 6.17.0
- Firmware package: STM32Cube FW_WBA V1.9.0
- Toolchain: Keil MDK-ARM V5.37
- Middleware: STM32_WPAN (BLE Basic stack)

 

Problem description

The application crashes with a HardFault after approximately 2 minutes of operation. The fault is caused by a NULL function pointer call in the generated file `Utilities/tim_serv/STM32_timer.c`, inside `UTIL_TIMER_IRQ_Handler`.

 

Suggested fix

Add a NULL guard before the callback invocation in `UTIL_TIMER_IRQ_Handler`:

if( currentExecutionHead->Callback != NULL ) {
    currentExecutionHead->Callback(currentExecutionHead->argument);
}

 

Note

This issue appeared after migrating from FW_WBA V1.6.1 to FW_WBA V1.9.0. The same project worked correctly with the previous version.