No timer interrrupt after switch to user application

[sde c.1]

STM32G473VC, custom board.

I use an own bootloader which resides at address 0x00000000 , the user application resides at 0x00008000.

I did set external files correct to use the bootloader

in user application

system_stm32g4xx.c : #define VECT_TAB_OFFSET     0x00008000U 

STM32G473VCTX_FLASH.ld : FLASH  (rx)  : ORIGIN = 0x8008000,  LENGTH = 220K

in bootload application

STM32G473VBTX_FLASH.ld : FLASH  (rx)  : ORIGIN = 0x8000000,  LENGTH = 32K

in bootloader we use this code to jump to the user application

void deinitEverything()
{
	//-- reset peripherals to guarantee flawless start of user application
	HAL_TIM_Base_DeInit(&htim6);
	HAL_CRC_DeInit(&hcrc);
	HAL_SPI_DeInit(&hspi2);
	HAL_NVIC_DisableIRQ(DMA1_Channel2_IRQn);
	HAL_NVIC_DisableIRQ(DMA1_Channel1_IRQn);
	HAL_NVIC_DisableIRQ(EXTI15_10_IRQn);
	HAL_GPIO_DeInit(GPIOA, GPIO_PIN_1);
	HAL_RCC_DeInit();
	HAL_DeInit();
	SysTick->CTRL = 0;
	SysTick->LOAD = 0;
	SysTick->VAL = 0;
}
 
static void jumpToApp(const uint32_t address)
{
	const JumpStruct* vector_p = (JumpStruct*)address;
 
	deinitEverything();
 
	/* let's do The Jump! */
    /* Jump, used asm to avoid stack optimization */
    asm("msr msp, %0; bx %1;" : : "r"(vector_p->stack_addr), "r"(vector_p->func_p));
}

In user application we use this code to jump to bootloader

HAL_NVIC_SystemReset();

timer 7 is used as Timebase Source, FreeRTOS is also running.

We used this bootloader setup successfully in many other projects , but in this one the timer 7 interrupt stops interrupting if we jump to bootload code and back to user application.

This cause HAL_IncTick() not getting called, and uwTick staying at 0 . Which cause HAL_MspInit() ... HAL_SYSCFG_EnableVREFBUF() run in an endless loop.

The only different with other projects is that we use SPI in this bootloader to bootload , where we use UART in all other projects.

I checked the timer 7 registers which seems all fine .

the strange thing is that both bootloader and user application runs correctly after a reset or power down - up cycle. Bootloader starts first and starts user application which runs fine. But when i use (SPI) commands to switch to bootloader and back to user application, then the TMR7 interrupt stops working.

What else can i check to find out why timer 7 is not firing an interrupt?

[sde c.1]

when interrupts are firing after a jumpt to application code and i break while no interrupt is executing i get SCB_ICSR : 0xc47000

when no interrupts are firing after a jump to application code and no interrupt is executing i get SCB_ICSR : 0x4438000

if i analyse this i get :

int works :   vectpending 0x70  , PENDSTSET activated

int not works    vectpending 0x8E 

i dont know how to interpret this ...

[sde c.1 · Accepted solution]

i have removed __disable_irq which i have added the past days in the bootloader code while i was searching for a solution... now it works.

i don't understand 100% why, i guess i need more knowledge about the STM32 NVIC interrupt system to know whats going on. But good documentation about this part is hard to get .

anyway , Thank you for assisting !