SDK12 ble_app_buttonless_dfu

[Sergy]

Hi,

Im tryin to use the ble_dfu service example from SDK12, I get DFU SERVICE NOT FOUND when trying to update from Android. Any suggestions what to look for?

I use S132v3, bootloader is flashed and I performed successful upload of the application via BLE when there was no app loaded.

[Lalit Kumar]

Hi, I'm having the same problem. After enabling notifications and writing 0x01 as characteristic value, the device doesn't enter bootloader mode. This is the APP log:

 APP:INFO:Device is entering bootloader mode!
:INFO:Erasing old settings at: 0x200021ac
:INFO:Erasing: 0x200021ac, num: 1
:INFO:Erase failed: 6
:INFO:Failed to erase bootloader settings

Looks like device is trying to enter the bootloader mode, but is unble to. I have tried with both debug bootloader and normal one.

[Daniel]

Check your bootloader linker file for a "BOOTLOADER_SETTINGS" line and copy it to your application linker file. For example, I had to add

BOOTLOADER_SETTINGS (rw) : ORIGIN = 0x0007F000, LENGTH = 0x1000

to the MEMORY area and

  .bootloaderSettings(NOLOAD) :
  {

  } > BOOTLOADER_SETTINGS

to the SECTIONS area.

This procedure is for gcc. The process is likely different for other compilers.

[Lalit Kumar]

Thanks for help. More info here: devzone.nordicsemi.com/.../