Start dfu bootloader from MBR

RE: Start dfu bootloader from MBR

Hung Bui — Thu, 28 Apr 2016 15:31:54 GMT

@Manu: I'm glad that you found the issue. Sorry that I didn't check if you have the 16kB RAM variant.

Manu — Wed, 27 Apr 2016 09:54:36 GMT

Hi Hung,

Thanks for your help.

The problem was in the dfu_gcc_nrf51.ld file which is configured with the RAM size at 32Kbytes, while mine is 16Kbytes.

/** RAM Region for bootloader. This setting is suitable when used with s110, s120, s130, s310. */

RAM (rwx) : ORIGIN = 0x20002C00, LENGTH = 0x5380 (to modify in 0x1380 for QFAA chip)

Hung Bui — Fri, 22 Apr 2016 10:46:30 GMT

Hi Manu,

Could you try to test:

Make a simple application (blinking an LED for example) and make sure it works when the softdevice programmed on the flash (locate the application in the application area)
Write 0x0003C000 to 0x10001014 in UICR and flash the test application to the address 0x3C000

If the application doesn't start on test case 2, please provide us the hex dump of the whole flash and your project files of the test project