What is a soft device?

[powerup]

HI.

I use the peripheral example of SDK15 to implement functions such as uart, spi, and interrupt.

However, if soft device S140 is programmed, then my code is not programmed.

What is a soft device?

Bluetooth seems to need a soft device, what does it do?

Thank you.

[Andre]

The SoftDevice contains the Nordic Bluetooth code. It's a piece of firmware that is flashed in a certain area on the microcontroller. When you have flashed a SoftDevice you need to adjust your linker settings of your code. See the examples for suitable linker files.