Nordic Family of Boards

There are several closely related boards from Nordic supported, or previously supported, by Tock. Unfortunately, the Nordic naming scheme is a bit confusing, so two notions get conflated:

• The nrf52xxx family of chips, specifically for Tock the nrf52832 and nrf52840, is often referred to as the "nrf52" family of chips.
• The development kit for the nrf52840 is called the nrf52840dk; the development kit for the nrf52832 is called nrf52dk.

The result is:

• "nrf52" => nrf52832 chip or nrf52840 chip, which are on the nrf52dk and nrf52840dk respectively
• "nrf52dk" => development board with the nrf52832 chip
• "nrf52840dk" => development board with the nrf52840 chip
• "nrf52840_dongle" => minimalist board with the nrf52840 chip

This naming matches the products released by Nordic, but users should be careful.

Tock Hierarchy

As much is shared across these platforms, Tock includes chip-specific components for these platforms in this crate. The nrf52_components crate contains initialization code shared only by boards that include any chips from the nrf52 family.

Legacy Boards

Tock 1.3 was the last release with support for the nrf51, a old chip in this family that has a Cortex M0 with no MPU.

Code for the nrf51dk platform is available in the tock archive.