DFU bootloader

[FormerMember]

HELLO everyone, i know we can download application by dfu, can we download bootloader and softdevice by dfu??

if you know, please tell me, thank you

[Ole Bauck]

Hi,

Yes you can. As the documentation for the BLE secure DFU bootloader example says:

The example bootloader accepts images that contain a new bootloader, SoftDevice, application, or any combination of these.

Ole

[Hung Bui]

Hi Yangying,

0x3340 comes from the requirement of the softdevice based on the configuration of number of central link, peripheral link, of bandwidth. The configuration is done with softdevice_enable_get_default_config() inside ble_stack_init().

If you have a look at softdevice_enable() you can see how we get that 0x3440, by print out the return value app_ram_base from sd_ble_enable() call.