Firmware (with FreeRTOS) does not run when nDBoot is enabled
Hello, everyone!
MCU: STM32F765ZIT.
FLASH size: 2MB.
I have a problem when running my firmware, with FreeRTOS, with or without a debugger.
My code is crashing in the HAL_Init() function when nDBoot¹ is enabled.
When I initialize the code through the debugger, it enters the HAL_Init()² function and crashes when trying to execute the HAL_MspInit() line, but I suspect that the problem actually occurs in the previous function, HAL_InitTick(TICK_INT_PRIORITY)³.
My function uses Timer 7 as the default for the FreeRTOS tick, as recommended by ST itself when using this middleware.
For testing purposes, I modified the HAL_InitTick function so that it would be similar to the HAL default⁴.
Even after this modification, it did not work.
So, after further testing, I decided to disable nDBoot (setting it as checked by STM32CubeProgrammer) and then the code worked perfectly. nDBank remained unchecked.
The problem is that now, without nDBoot enabled, I can no longer use dual boot mode and switch banks.
If anyone can help me, I will be very grateful
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¹ I needed to enable nDBoot and nDBank (set as unchecked by STM32CubeProgrammer) because I am working with Dual Boot, and I have a firmware recorded in each bank.
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² My HAL_Init function:
HAL_StatusTypeDef HAL_Init(void)
{
/* Configure Instruction cache through ART accelerator */
#if (ART_ACCLERATOR_ENABLE != 0)
__HAL_FLASH_ART_ENABLE(); #endif /* ART_ACCLERATOR_ENABLE */ /* Configure Flash prefetch */ #if (PREFETCH_ENABLE != 0U) __HAL_FLASH_PREFETCH_BUFFER_ENABLE();
#endif /* PREFETCH_ENABLE */ /* Set Interrupt Group Priority */ HAL_NVIC_SetPriorityGrouping(NVIC_PRIORITYGROUP_4);
/* Use systick as time base source and configure 1ms tick (default clock after Reset is HSI) */ HAL_InitTick(TICK_INT_PRIORITY);
/* Init the low level hardware */ HAL_MspInit();
/* Return function status */ return HAL_OK;
}-------------------------------------------------------------------------------------------
³ My function HAL_InitTick(TICK_INT_PRIORITY):
HAL_StatusTypeDef HAL_InitTick(uint32_t TickPriority) {
RCC_ClkInitTypeDef clkconfig;
uint32_t uwTimclock = 0;
uint32_t uwPrescalerValue = 0;
uint32_t pFLatency;
/*Configure the TIM7 IRQ priority */ HAL_NVIC_SetPriority(TIM7_IRQn, TickPriority ,0);
/* Enable the TIM7 global Interrupt */ HAL_NVIC_EnableIRQ(TIM7_IRQn);
/* Enable TIM7 clock */ __HAL_RCC_TIM7_CLK_ENABLE();
/* Get clock configuration */ HAL_RCC_GetClockConfig(&clkconfig, &pFLatency);
/* Compute TIM7 clock */ uwTimclock = 2*HAL_RCC_GetPCLK1Freq();
/* Compute the prescaler value to have TIM7 counter clock equal to 1MHz */ uwPrescalerValue = (uint32_t) ((uwTimclock / 1000000U) - 1U);
/* Initialize TIM7 */ htim7.Instance = TIM7;
/* Initialize TIMx peripheral as follow: + Period = [(TIM7CLK/1000) - 1]. to have a (1/1000) s base time.
+ Prescaler = (uwTimclock/1000000 - 1) to have a 1MHz counter clock.
+ ClockDivision = 0 + Counter direction = Up */ htim7.Init.Period = (1000000U / 1000U) - 1U;
htim7.Init.Prescaler = uwPrescalerValue;
htim7.Init.ClockDivision = 0;
htim7.Init.CounterMode = TIM_COUNTERMODE_UP;
if(HAL_TIM_Base_Init(&htim7) == HAL_OK) { /* Start the TIM time Base generation in interrupt mode */ return HAL_TIM_Base_Start_IT(&htim7);
} /* Return function status */ return HAL_ERROR;
}--------------------------------------------------------------------------------------------
⁴ Default HAL_InitTick function:
__weak HAL_StatusTypeDef HAL_InitTick(uint32_t TickPriority) {
/* Configure the SysTick to have interrupt in 1ms time basis*/ if (HAL_SYSTICK_Config(SystemCoreClock / (1000U / uwTickFreq)) > 0U) return HAL_ERROR;
} /* Configure the SysTick IRQ priority */ if (TickPriority < (1UL << __NVIC_PRIO_BITS)) { HAL_NVIC_SetPriority(SysTick_IRQn, TickPriority, 0U);
uwTickPrio = TickPriority;
} else { return HAL_ERROR;
} /* Return function status */ return HAL_OK;
}