OTA over serial failure| sdk 15.2

[Somesh Burkule]

Hello Everyone,

I am using nrf52832 and sdk 15.2 for ota over serial. I have made bootloader for OTA over UART and tested same with nrfutil using my dfu package file. firmware is upgraded successfully and  working fine.

Now I need to upgrade firmware using host MCU. I tried sending dfu package file( .zip ) to nrf52832 over UART using slip librairy to upgrade firmware but it is not working.

Is there any compulsion to send Ping packet, PNR, MTU Packet, init packet, application and bootloader separately over UART?

Can we send directly dfu package created through nrfutil to nrf52832 from other MCU over UART?

Kindly suggest me right approach.

[Edvin]

Hello,

 

Now I need to upgrade firmware using host MCU. I tried sending dfu package file( .zip ) to nrf52832 over UART using slip librairy to upgrade firmware but it is not working.

 From this, I interpret that you want to drag'n'drop from a computer, isn't that right? Is that the final way you want to do it? Or do you want to program the nRF From a microcontroller on a PCB? 

What HW are you running on? Is it a DK, or is it a custom PCB?

BR,

Edvin

[Somesh Burkule]

No, I don't want drag and drop from computer. I want upgrade nrf from other MCU through UART. I have custom PCB. Kindly help for the same.

[Somesh Burkule]

Hi Edvin,

I have resolved my problem related to slip lib. now getting response from nrf as I send ping packet from other MCU over uart on my custom board.

now I want to send init packet and firmware. so my question is how to create init packet? is it Compulsory?

I tried sending dfu package( zip file ) directly. doesn't works. 

[Edvin]

You need to generate the entire DFU image (including the init packet) with nrfutil. Then, when you need to see how to transfer the init packet, you need to study the documentation from the links in my initial replies.

BR,

Edvin

[Somesh Burkule]

Can we update firmware without init packet?

Can we send directly dfu package without including init packet?

[Edvin]

Somesh Burkule said:

Can we update firmware without init packet?

 No

 

Somesh Burkule said:

Can we send directly dfu package without including init packet?

 no

[Somesh Burkule]

I have created sd_app_dfu_package_v3.zip file. there is no init packet generated.

I have created using following command.

nrfutil pkg generate --hw-version 2 --sd-req 0xAF --sd-id 0xAF --softdevice C:\nRF5_SDK_15.2.0_9412b96\nRF5_SDK_15.2.0_9412b96\components\softdevice\s132\hex\s132_nrf52_6.1.0_softdevice.hex --application-version 2 --application C:\nRF5_SDK_15.2.0_9412b96\nRF5_SDK_15.2.0_9412b96\examples\ble_central\scanner\pca10040\s132\arm5_no_packs\_build\nrf52832_xxaa.hex sd_app_dfu_package.zip

is it correct?