jump to FreeRTOS appl is failed

[Paul.Lee]

Hi,
I'm developing a custom bootloader.
My freertos appl. is running well on debug mode in stm32cubeide while my freertos appl is on 0x08008000.

MEMORY

{

RAM (xrw) : ORIGIN = 0x20000000, LENGTH = 128K - 8

/*FLASH (rx) : ORIGIN = 0x8000000, LENGTH = 512K*/

FLASH (rx) : ORIGIN = 0x8008000, LENGTH = 512K - 0x8000

}

And, I load my custom bootloader on 0x08000000, and I try to jump to 0x080080000 but my freertos appl is not running.
My bootloader is using Systick, but my freertos is using TIM4.

My jump code of bootloader is as:

 

 

 

 

void
appl_jump (void)
{
 DBG ("Jump to appl\n");

	pFunction Jump_To_Application;
	uint32_t JumpAddress;

	RAM_BOOT_FLAG = 0x424f4f54;		// 'BOOT'

	/* Disable all interrupts */
	__disable_irq();

	/* Set the clock to the default state */
	HAL_RCC_DeInit();
	HAL_DeInit();

	/* Disable Systick timer */
	SysTick->CTRL = 0;
 SysTick->LOAD = 0;
 SysTick->VAL = 0;

	/* Clear Interrupt Enable Register & Interrupt Pending Register */
	for (uint8_t i = 0; i < sizeof(NVIC->ICER) / sizeof(NVIC->ICER[0]); i ++)
		{
		NVIC->ICER[i] = 0xFFFFFFFF;
		NVIC->ICPR[i] = 0xFFFFFFFF;
		}

	/* Jump to user application */
	JumpAddress = *(__IO uint32_t*) (APPL_START_ADDR + 4);
	Jump_To_Application = (pFunction) JumpAddress;

	/* Initialize user application's Stack Pointer */
	__set_MSP(*(__IO uint32_t*) APPL_START_ADDR);

	/* Jump to application */
	Jump_To_Application();
}

 

 

 

I call this at front of main() of freertos appl.

SCB->VTOR = APPL_START_ADDR;

 

Help me anyone.
BR
Paul

 

[Paul.Lee]

Hi,
My freertos is stuck at osKernelStart

----

osStatus_t osKernelStart (void) {

osStatus_t stat;

 

if (IS_IRQ()) {

stat = osErrorISR;

DBG ("osErrorISR\n");

}

else {

if (KernelState == osKernelReady) {

KernelState = osKernelRunning;

vTaskStartScheduler();

stat = osOK;

} else {

stat = osError;

}

}

 

return (stat);

}

 

IS_IRQ() is true, so cannot start scheduler.

Let me know how can I fix it.

BR
Paul

[Paul.Lee]

Hi,
I solved this problem by

 

call __enable_irq after SystemClock_Config();
But, at line 123 DBG function(formatted uart out function) should be needed.
DBG function use pvPortMalloc inside. passing "" null.
If ommit this call, not not work.
Anyone know how?

RB
Paul