nRF51 and nRF52 Firmware update with another MCU over UART

[Mehdi]

Hi,

I'm working on two projects, in the first one, nRF52832 (softdevice S132 V6.1.0)  is used as a slave component communicated with STM32L4+ over UART and the second one,  nRF51422 (softdevice S130 V2.0.1) is used as a slave component too and communicated with STM32L4 over UART.  

I'm asked to provide a solution to update nRF52 and nRF51 firmware by the STM32 through UART.

Do you have any suggestions for that? 

Best Regards,

Mehdi.

[Jørgen Holmefjord]

Hi,

We do not have any solutions for STM32, but we have som unofficial DFU master examples implemented in C. You can find it in Appendix 6 in this blog post.

I suppose it should be possible for you to port this example code to the STM32 devices.

Best regards,
Jørgen

[Mehdi]

Hi Horgen,

Thank you for your quick reply, if I understood correctly, the given implementation is the unofficial DFU master example of secure DFU UART given in the SDK. But I see in SDK 17.0.0 and SDK 15.2.0 that there is no DFU UART secure implementation for nRF51.

Is there any official or unofficial UART DFU (slave side) implementation for nRF51?

If not, is it possible to migrate the given DFU UART (slave side) example to nRF51?  

Best Regards,

Mehdi

[Mehdi]

Thank you :)