DOUBT IN OTA -DFU WITH BUTTON AND BUTTONLESS

[NANDHU]

HI

•  We are developing a 2d-3d  mouse .
•  We are trying to implement OTA-DFU into our  custom board .
•  We first tried it on development kit and its working fine too . I can able to update the "ble_app_hids_mouse" into our DK using nRF Toolbox mobile app.
•  We are using    "nRF5_SDK_14.2.0_17b948a".

I WILL EXPLAIN THE PROCEDURES I DID FOR IMPLEMENTING THE OTA -DFU

• First i flashed the softdevice hex file to the DK.(s132_nrf52_5.0.0_softdevice.hex).
• Then i flashed the bootloader hex with needed modification into the DK. (secure_dfu_ble_s132_pca10040_debug.hex).
• Then LED1 and LED3  in DK will light up the device will enter into DFU mode by advertising as "DfuTrag".
• Then using my android phone i uploaded the zip package containing the  application (ble_app_hids_mouse) hex file ,during  upload the LED2 and LED3 in the DK will turn on.
• After successful upload the DK can use as a mouse by pressing the buttons.

MY DOUBTS

1. When DK in DFU mode LED1 and LED3  will turn on, I checked the bootloader code but i didn't saw any function  to turn on the LED1 can you help to find in which c file or function LED1 was turning on . I saw the function to turn on the LED3 (inside leds_init())but i didn't findout the function to turn on LED1.
2. Similarly during the upload is takeing place LED2 AND LED3 will turn on ,but i didn't saw any function  to turn on the LED2 please help to find in which c file or function LED2 was turning on .

 THIS IS BOOTLOADER CODE WE ARE USEING

nRF5_SDK_14.2.0_17b948a->nRF5_SDK_14.2.0_17b948a->examples->dfu->bootloader_secure_ble->pca10040_debug->ses.

PLEASE ANSWER TO MY 1 AND 2. IF YOU CAN POSSIBLE MAKE SCREENSHOT WHERE ITS TURNING ON  LED1 AND LED2 AND SEND TO ME. 

[Amanda Hsieh]

Hi, 

Please take a look at <nRF5_SDK_14.2.0_17b948a>\components\libraries\bootloader\ble_dfu\nrf_ble_dfu.c: 

#define ADVERTISING_LED_PIN_NO              BSP_LED_0                                               /**< Is on when device is advertising. */
#define CONNECTED_LED_PIN_NO                BSP_LED_1                                               /**< Is on when device has connected. */

and trace ADVERTISING_LED_PIN_NO and CONNECTED_LED_PIN_NO variables.

-Amanda H.

[NANDHU]

Hi Amanda ,

       Thanks for the reply.

NEXT DOUBT 

• After OTA-DFU there is bootloader hex application hex  and softdevice hex in our nRF52832 soc.If we turn OFF the DK and turn ON what will the order of execution of  those hex file
• i.e which hex file will execute first which one second .

[Amanda Hsieh]

Hi, 

NANDHU said:

Where is the buttonless bootloader code in  sdk. ( ie these "bootloader_secure_ble_debug_without_bonds_s132.hex "file code ).

<nRF5_SDK_14.2.0>\examples\dfu\bootloader_secure_ble\pca10040

NANDHU said:

• I want to change our application code to buttonless DFU-OTA supporting application how can i did these .
• If you find difficult with our application please just tell me how to change the "ble_app_hids_mouse" application to a buttonless DFU -OTA  supporting  application.

 

I recommend you refer to the Buttonless DFU Template Application for a working code example. You can also find relevant documentation in the Buttonless Secure DFU Service documentation.

-Amanda H.

[NANDHU]

Amanda Hsieh said:

nRF5_SDK_14.2.0>\examples\dfu\bootloader_secure_ble\pca10040

One important doubt ,

1.  Is the bootloader code using for both OTA-DFU with button and buttonless are same?

I think both needed separate bootloader code .because both bootloader advertising with separate names .  

[NANDHU]

Amanda ,

             I verified the my doubt about bootloader.

MY NEXT DOUBT.

When i looked the documentation provided by you  i noticed that for adding buttonless secure DFU service to a BLE application the application must uses "Peer Manager" and application must be configured to use the power management and also the application is responsible for initializing the BLE stack.

1. Is the "ble_app_hids_mouse" application contains all those things ?
2. Is there any thing wanted to add by us?

please answer to my first and second question as soon as you can possible.

[NANDHU]

Hi Amanda,

    Please reply as soon as you can possible.

[Amanda Hsieh]

Hi, 

NANDHU said:

Is the "ble_app_hids_mouse" application contains all those things ?

Yes, you can compare the sdk_config.h. 

 

NANDHU said:

Is there any thing wanted to add by us?

Please refer to Buttonless DFU Template Application

-Amanda H. 

[NANDHU]

Amanda ,

      In "ble_app_hids_mouse"  i didn't find the functions calling for configure to use the power management module.

1. "power_management_init()" is not used  in "ble_app_hids_mouse"
2. And also not used  this"nrf_pwr_mgmt_run();" in "ble_app_hids_mouse".Then how you conform that all the power management module is configured in "ble_app_hids_mouse".

[Amanda Hsieh]

Hi, 

Yes, you are right. Please let me correct that:

According to the sdk_config.h of "ble_app_hids_mouse", the POWER_ENABLED is 0. 

To use nrf_pwr_mgmt_init() in the power_management_init, you have to enable the module as 

// <e> NRF_PWR_MGMT_ENABLED - nrf_pwr_mgmt - Power management module
//==========================================================
#ifndef NRF_PWR_MGMT_ENABLED
#define NRF_PWR_MGMT_ENABLED 1
#endif

You also need to check nrf_pwr_mgmt.c is in the Libaries. 

<nRF5_SDK_14.2.0>\components\libraries\pwr_mgmt\nrf_pwr_mgmt.c

-Amanda H. 

[NANDHU]

hi Amanda,

 I added all requested changes to add the buttonless dfu service to "ble_app_hids_mouse".

But my code was execution was breaking ,when entering to the below function in services_init()

• nrf_dfu_set_adv_name_init();  inside ble_dfu_buttonless_async_svci_init(void).

please help me to solve these issue,

Actually what is these "nrf_dfu_set_adv_name_init();" function doing

[Amanda Hsieh]

Hi, 

NANDHU said:

But my code was execution was breaking ,when entering to the below function in services_init()

What error message does nrf_dfu_set_adv_name_init() returen? 

This post and this post might help you. 

NANDHU said:

what is these "nrf_dfu_set_adv_name_init();" function doing

 It is answered in this post. 

 

-Amanda H.

[NANDHU]

Actually there is no error is showing  .I just flashed the modified "ble_app_hids_mouse" which support buttonless dfu to the our board but its not advertising . so i debugged it using JLink then i noticed that when code execution is entering to " "nrf_dfu_set_adv_name_init();" but its not leaving from these function . 

i don't known why .

note:- i didn't flashed the bootloader hex to our board.