Preparing the development kit The USB connector must not be used to power the board during measurements as it will give unreliable results due to added supply and measurement noise when the debugger chip USB port is active. The board should be powered from a coin cell battery, or using the External Supply pins P21 for current measurements.

Below you will find general information on measuring current with the nRF52 chip and basic test equipment setup and techniques.

In the fast-moving world of the Internet of Things, it’s more important than ever to make sure you can keep your products up to date quickly, securely and easily. Updating firmware remotely brings benefits to both companies and consumers.

When designing your product, it’s crucial that you choose a memory technology that lets you update your firmware easily. Otherwise, you may have to scrap a lot of products if you find errors. If this happens after they've been shipped to end customers, the negative impacts will be severe.

Firmware is held in non-volatile memory such as ROM, EPROM or flash memory. Let’s take a closer look at one of them: flash memory, which enables device firmware updates (DFU) and the advantages that this gives.