How to locate the hex code in a special section?

[wzszzxj]

Hi All:

 As the topic............Now ,my program is consisted two group,one is the base group,the other is the application group.We often upgrade the application group,so I want to define two section,but how?

1.how to defiine two section?

2.how to locate the hex code?

[JONATHAN LL]

Hi,

Can you elaborate on what you mean or what you want to achieve? 

nRF5 SDK 17.0.2 ? Soft device ?

Do you want to have custom bootloader or are we talking about memory sections ?

Regards,
Jonathan 

[wzszzxj]

HI,JONATHAN:

   That is riht!   I just want to make custom bootloader! OK.I use SDK  V16. Now,  I finish the application coding  with usb_hid_generic and usb_hid_mouse.I want to use the usb_hid_generic  as dfu,so what I am amazing is how to locate the usb_hid_generic and the usb_hid_mouse,and even how to coding them in a normal way?

     

[JONATHAN LL]

Hi,

USB HID generic and USB HID mouse can be found here.

Do you wish to do DFU over USB, UART or BLE ?

I don't think I quite understand what you want to do. Can you maybe write your answer in both English and original language?

Regards,
Jonathan

[wzszzxj]

Hi,JONATHAN:

   I just want to do DFU over USB. Now,what trouble me is how to locate the hex code? Is it descripted in

the flash_placement.xml  ?But in the file flash_placement.xml ,I still can't find any flashrom_address declared in it.Could you help to make it more clearly to me?

[JONATHAN LL]

When building the application the .hex file will be located in the build folder; build/Output/Release
I not then here are som examples:
https://infocenter.nordicsemi.com/topic/sdk_nrf5_v17.0.2/sdk_app_serial_dfu_bootloader.html?cp=7_1_4_4_4

https://infocenter.nordicsemi.com/topic/sdk_nrf5_v17.0.2/ble_sdk_app_open_bootloader.html?cp=7_1_4_4_2

https://infocenter.nordicsemi.com/topic/sdk_nrf5_v17.0.2/sdk_app_serial_dfu_bootloader.html

https://devzone.nordicsemi.com/nordic/short-range-guides/b/software-development-kit/posts/getting-started-with-nordics-secure-dfu-bootloader (This is for DFU over Bluetooth but some parts are similar so you can look at it for referance)

Hope this helps 
Regards,
Jonathan