zephyr-nfc08a1

Zephyr app to drive the X-NUCLEO-NFC08A1

Do not clone directly from git!

This is a Zephyr-based firmware repo. Read the getting-started guide here: https://docs.zephyrproject.org/latest/getting_started/index.html

This repo is using Workflow 4: Application as the manifest repository, as described in https://developer.nordicsemi.com/nRF_Connect_SDK/doc/1.6.0/nrf/dm_adding_code.html#user-workflows

How to use

This repo is NOT to be cloned directy from git! Use it with Zephyr's west metatool, e.g.:

mkdir vouch-zephyr-nfc08a1
cd vouch-zephyr-nfc08a1
west init -m git@github.com:vouchio/zephyr-nfc08a1.git
west update

For more information about west, see https://docs.zephyrproject.org/1.14.0/guides/west/repo-tool.html

Configuring for I2C

By default, the hardware and software are configured for SPI. The following changes are required for I2C.

Hardware

Reconfigure the X-NUCLEO-NFC08A1 for I2C by doing the following:

0. Solder pin headers onto the SCL and SDA connections (ST2 and ST4) and add jumpers.
1. Cut traces related to SCLK and MISO (ST5 and ST6 jumpers), and optionally add pinheaders so they can be-rejumpered for SPI mode.
2. Solder 1.65 kΩ pullup resistors R116 and R117.
3. Move resistor R205 to R204 so that I2C_ENAB is pulled low.

Software

0. Change prj.conf to specify CONFIG_SPI=n, CONFIG_I2C=y, and CONFIG_RFAL_USE_I2C=y
1. Revise the board overlay (in the boards directory) to uncomment the I2C devicetree configuration and comment the SPI configuration.

Building an application

• cd to the application directory.\ E.g.:

  cd /path/to/vouch-zephyr-nfc08a1/vouch/apps/nfc08a1

• Build using west. The first time, the board needs to specified:

  west build --board=nrf5340dk_nrf5340_cpuapp -p always

  or

  west build --board=nrf52840dk_nrf52840 -p always

  or

  west build --board=nucleo_l053r8 -p always -- -DOVERLAY_CONFIG=nucleo_l053r8.conf

  Next time, you can just invoke the build command:

  west build

• Flash or debug your application:

  west flash
  # or
  west debug