DFU bootloader won't run on target

[Doug_H]

I'm having problems getting the DFU dual bank ble s110 example to work on my target. My custom BLE app on my target is running fine, so my hardware is all good, and the DFU bootloader example runs fine on my PCA10028 board. I follow the exact same process of loading the bootloader on my target (after porting to io changes) as I do on the PCA10028, but the bootloader won't run:

Target is nRF51822QFAA, the process I follow is:

From nRFgo Studio:

• Erase All
• load softdevice
• load bootloader (I tried loading bootloader from both keil and from nRFgo Studio, neither work on my target, both work on the PCA10028)

At this point, I don't really know how to proceed to figure out what the problem is. Can anyone offer some advice of where to look?

[Hung Bui]

Hi Doug,

If you are using 16kB Ram variant, you should modify the RAM setting to match. The examples in the SDK was configured for 32kB RAM variant. You can have a look here

[Doug_H]

Hi Hung,

Yes, that was the problem. All working now, thanks very much for your help!