LPC11U2/3x secondary bootloader doens't jump to app

[emimad]

Hi friends!

I've spent few days trying to get my secondary bootloader working.

I've studied AN10995, which is for LPC1114 (not the same family), but I can't get to make it jump from secondary bootloader to app.

App is in 0x002000 address (I've checked it with flashmagic) and this is my jump sequence:

 __disable_irq();
		    LPC_SYSCTL->MAINCLKSEL = 0;        // using FRO
		    LPC_SYSCTL->MAINCLKUEN = 0;
		    LPC_SYSCTL->MAINCLKUEN = 1;                                    

		    SystemCoreClockUpdate();
		/* Load main stack pointer with application stack pointer initial value,
		   stored at first location of application area */
		asm volatile("ldr r0, =0x2000");																//=0x1000");
		asm volatile("ldr r0, [r0]");
		asm volatile("mov sp, r0");

		/* Load program counter with application reset vector address, located at
		   second word of application area. */
		asm volatile("ldr r0, =0x2004");																//=0x1004");
		asm volatile("ldr r0, [r0]");
		asm volatile("mov pc, r0");

[emimad · Accepted solution]

SOLVED!!!!

App needs to activate IRQs in the beggining of the main()!!!

int main(void) {
__enable_irq();

OMG!

[emimad]

IRQ Handlers are similar to AN10995:

void NMI_Handler(void)
{
	/* Re-direct interrupt, get handler address from application vector table */
	asm volatile("ldr r0, =0x2008");
	asm volatile("ldr r0, [r0]");
	asm volatile("mov pc, r0");
}

void HardFault_Handler(void)
{
	/* Re-direct interrupt, get handler address from application vector table */
	asm volatile("ldr r0, =0x200C");
	asm volatile("ldr r0, [r0]");
	asm volatile("mov pc, r0");
}

void SVCall_Handler(void)
{
	/* Re-direct interrupt, get handler address from application vector table */
	asm volatile("ldr r0, =0x202C");
	asm volatile("ldr r0, [r0]");
	asm volatile("mov pc, r0");
}

void PendSV_Handler(void)
{
	/* Re-direct interrupt, get handler address from application vector table */
	asm volatile("ldr r0, =0x2038");
	asm volatile("ldr r0, [r0]");
	asm volatile("mov pc, r0");
}

void SysTick_Handler(void)
{
	/* Re-direct interrupt, get handler address from application vector table */
	asm volatile("ldr r0, =0x203C");
	asm volatile("ldr r0, [r0]");
	asm volatile("mov pc, r0");
}

void WAKEUP_IRQHandler(void)
{
	/* Re-direct interrupt, get handler address from application vector table */
	asm volatile("ldr r0, =0x2040");
	asm volatile("ldr r0, [r0]");
	asm volatile("mov pc, r0");
}

Some help is needed, please.

Can somebody try my sequence and check what's the problem?