Bootload NRF52832 over UART from external MCU

[jlongo]

Hello all,

I am interested in using the Secure Serial Bootloader to program my NRF52832 over UART from an external MCU. I am aware of the SDK example and creating DFU packages (I have used the BLE DFU before), but from what I'm reading this example uses nrfutil to do the flashing over uart using a usb/serial bridge. How can I program the NRF52 using UART from an MCU? The MCU has support for an SD card filesystem which can store the DFU package.

[Jørgen Holmefjord]

Hi,

See appendix 6 in this blog post. This contains a serial DFU master code in C for a nRF52 device. You can use that code as a reference when implementing the functionality for the external MCU.

Best regards,
Jørgen