1.. _adafruit_adalogger_featherwing_shield:
2
3Adafruit Adalogger Featherwing Shield
4#####################################
5
6Overview
7********
8
9The `Adafruit Adalogger Featherwing Shield`_ features an `NXP PCF8523 Real-Time
10Clock/Calendar with Battery Backup`_, and an SD card interface.
11
12.. figure:: adafruit_adalogger_featherwing.webp
13   :align: center
14   :alt: Adafruit Adalogger Featherwing Shield
15
16   Adafruit Adalogger Featherwing Shield (Credit: Adafruit)
17
18Pin Assignments
19===============
20
21+-----------------------+---------------------------------------------+
22| Shield Connector Pin  | Function                                    |
23+=======================+=============================================+
24| D10                   | SD card SPI CS                              |
25+-----------------------+---------------------------------------------+
26| MOSI                  | SD card SPI MOSI                            |
27+-----------------------+---------------------------------------------+
28| MISO                  | SD card SPI MISO                            |
29+-----------------------+---------------------------------------------+
30| SCK                   | SD card SPI SCK                             |
31+-----------------------+---------------------------------------------+
32| SDA                   | PCF8523 RTC I2C SDA                         |
33+-----------------------+---------------------------------------------+
34| SCL                   | PCF8523 RTC I2C SCL                         |
35+-----------------------+---------------------------------------------+
36
37Requirements
38************
39
40This shield can only be used with a board which provides a configuration for Feather connectors and
41defines node aliases for SPI, I2C and GPIO interfaces (see :ref:`shields` for more details).
42
43Programming
44***********
45
46Set ``--shield adafruit_adalogger_featherwing`` when you invoke ``west build``. For example:
47
48.. zephyr-app-commands::
49   :zephyr-app: tests/drivers/rtc/rtc_api
50   :board: adafruit_feather_m0_basic_proto
51   :shield: adafruit_adalogger_featherwing
52   :goals: build
53
54.. _Adafruit Adalogger Featherwing Shield:
55   https://learn.adafruit.com/adafruit-adalogger-featherwing
56
57.. _NXP PCF8523 Real-Time Clock/Calendar with Battery Backup:
58   https://www.nxp.com/docs/en/data-sheet/PCF8523.pdf
59