I am developing for the STM32F0 using Keil uVision.

__disable_irq();
Jump_To_Application();


I am getting a hard fault in the Jump_To_Application() line, with "Cannot access memory" message given by Keil.

Within Keil, I set the IROM1 start address to be 0x08003000 in my main application's project configuration. I feel like the problem lies in some further settings within Keil. For example, should IROM2 be set to anything? Should anything be adjusted from defaults in the Keil configuration within the bootloader project?

Does anyone have any recommendations?

• Do you have a valid application at the address 0x08003000? Jul 10, 2016 at 14:09
• Batuu - I am using STLink to flash the application at 0x08003000. Jul 11, 2016 at 14:42
• rfkortekaas - I am assuming Keil produces based on the GUI configuration. I don't actually configure any scripts manually. Which files do you need to see? Jul 11, 2016 at 14:45

I had the same problem: I solved it with commented this lines:

__disable_irq();


Turn your code into small sections:

1. In the first write a simple blinky code without any interrupt.
2. use of sector erase ability and and write your put your bootloader and application code together in flash. Now you just,must try to jump from bootloader in application code. If it works, this means your jumping is correct.
3. Now try receive your application code with USART (or with any other peripheral) and write in flash. It must work, if not, it means write it flash is wrong (open hex code file and compare flash data,flash address and other thing with hex file) (attention to little_endian writing)
4. Now write a blinky code with timer and interrupt. It must work, if not, it mean is mistake is in jumping vector table

You need to reconfigure the vector table offset. The offset being your app's starting address.

__disable_irq();

 SCB->VTOR = APPLICATION_ADDRESS;