The packet format of serial dfu in sdk 14.2.0, it's not the same as sdk 11.0.0 before?

[Aijiapeng]

Dear Support Team,

I’m using nrf52832  and SDK 14.2.0. In my project ,there are two dsp,one is nrf52832 and the other is ntk658, they connect via uart with each other. ntk658 supports the sd-card function.What i want to do is using ntk658 read the ble update fw and then transfer to nrf52832 via uart. So i know i need use serial DFU bootloader.Actually,i have done it in my another project. But i used SDK 11.0.0.And the packet format is very clear as following picture shows,

 

 But my question is what the packet format should i send to nrf52832 in SDK 14.2.0? How can i transfer the ble upgrade fw to nrf52832?

Best regards,

Aijiapeng.

[Hung Bui]

Hi, 

The packet format is defined here.

Please let me know if you have further question, I have a UART DFU master project that I can share just in case. 

[Aijiapeng]

Hi,Hung Bui, Thanks for you repeat. I have review the packet format of serial DFU in SDK 14.2.0. I am still confuse that there are no start packet ,no packet header and so on. You said that you have a UART DFU master project .Does it work with SDK 14.2.0? If you can share to me, that whould be wonderful.

TKS !

[Aijiapeng]

Sorry for my poor English！

[Hung Bui]

Hi, 

Attached is the UART DFU Master for SDK v14.2, also you can find the logic analyzer trace. You can use Saleae Logic software to read it. It woudl be very useful. 

The documenation is for SPI DFU master but it should be similar for UART DFU . I'm not sure softdevice and bootloader supported on this DFU Master. And you should copy the project to examples\peripheral to compile.

DFUMaster_UART.zip

[Aijiapeng]

Hi, I am using the logic analyzer to get the packet format and analyze it. Thanks a lot.