It couldn't startup application after move application from region2 to region1

[Kevin]

Hi all,

I try to create a new project to update my firmware using twi(I2C) interface.

In my test case, first i download firmware to region2 via keil, then copy the firmware from region2 to region1, but after erase region2, it couldn't startup.

If i don't erase region2, application could startup success.

Any suggestions or pointers are very much appreciated. Thanks.

[Hung Bui]

Hi Kevin, 

 

How do you do DFU update ? Do you have a bootloader ? Do you use our bootloader ? 

How do you start your application at region 2 ? Do you have any kind of vector table forwarding ? Do you use our softdevice ? 

 

 

 

 

 

 

[Kevin]

Hi Hung Bui,

I used the SDK12.2(52832), and modify the example Nordic 52832\nRF5_SDK_12.2.0_f012efa\examples\dfu\bootloader_secure.

I remove the ble dfu and firmware check function, only save boot function.

This is my test step:

1. Erase region 1
2. Copy region 2 to region 1
3. Erase region 2

In this case, it could not startup success. If do not to do setp 3, it will startup success.

And I found some difference if changed keil download address and build it, the build hex file will difference.

So I want to build a firmware that the download address is region 1 but download the firmware to region 2 address.

Is there another(not keil or nRFgo studio) way can I download the appilcation(build address is region 1) to region 2 address?

Thanks!!