Second Bootloader LPC11E68

felipeprovenzan — Wed, 23 Nov 2016 05:04:32 GMT

Hi,
I am going crazy trying to understand whats wrong with my code, i am following this thread:

IAP code, unable to jump on user application for LPC11UXX(Cortex M0)

and this AN:

http://cache.nxp.com/documents/application_note/AN11511.zip

What i have:

- Bootloader located at 0x0000
- Application Code located at 0x30040

- The LPC11E68 do not have VTOR register, so i created the manual redirection of the interrupts (as the AN11511) Ex:

void PIOINT0_IRQHandler(void)
{
   /* Re-direct interrupt, get handler address from application vector table */
   asm volatile("ldr r0, =0x300FC");
   asm volatile("ldr r0, [r0]");
   asm volatile("mov pc, r0");
}

My problem:

If i run from the Flash Magic and click on "GO" from the address 0x30040 the application works fine, but when i try to jump from my bootloader the code stuck....

my start app code:

void boot_start_app()
{
   asm volatile("ldr r0, =0x30040");
   asm volatile("ldr r0, [r0]");
   asm volatile("mov sp, r0");

   asm volatile("ldr r0, =0x30044");
   asm volatile("ldr r0, [r0]");
   asm volatile("mov pc, r0");
}

I am without a jtag in the moment, so i am in a try and error strategy.

Do you have some ideas?

Best regards

Re: Second Bootloader LPC11E68

jeremyzhou — Thu, 24 Nov 2016 03:32:03 GMT

Hi Felipe Provenzano,

I was wondering if you can upload your demo, then I can run the demo and replicate the issue on my board.

I'm looking forward to your reply.
Have a great day,
Ping

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LPC MicrocontrollersのトピックSecond Bootloader LPC11E68

Second Bootloader LPC11E68

Re: Second Bootloader LPC11E68