analogdevicesinc · jvelasc2 · Oct 17, 2025
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+.. include:: ../../../../../projects/ad7124-4sdz/README.rst
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+AD7124-4SDZ no-OS Example Project
+=================================
+
+.. contents::
+    :depth: 3
+
+Supported Evaluation Boards
+---------------------------
+
+- :adi:`EVAL-AD7124-4SDZ`
+
+Overview
+--------
+
+The EVAL-AD7124-4SDZ evaluation board is a platform for testing the
+AD7124-4, a 4-channel, 24-bit sigma-delta ADC. It features low noise,
+low power consumption, and includes an internal instrumentation
+amplifier and reference. The board supports diverse input
+configurations, suitable for high-precision measurements, and connects
+to PCs via the Analog Devices System Demonstration Platform
+(EVAL-SDP-CB1Z) for standalone data analysis. It requires a 7V to 9V
+power supply and offers connectors for power and signals, allowing users
+to connect sensors and conduct ADC diagnostics.
+
+Applications
+------------
+
+- Temperature Measurement
+- Pressure Measurement
+- Industrial Process Control
+- Instrumentation
+- Smart Transmitters
+
+Hardware Specifications
+-----------------------
+
+Power Supply Requirements
+~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+The EVAL-AD7124-4SDZ evaluation board requires an external power supply
+ranging from 7V to 9V. Power can be supplied via the J3 connector
+using a bench top supply or the J5 connector with a DC plug adapter.
+
+On-board Connectors
+~~~~~~~~~~~~~~~~~~~
+
++-----------------------+-----------------------+-----------------------+
+| **Connector**         | **Type / Location**   | **Function**          |
++-----------------------+-----------------------+-----------------------+
+| 120-pin Header        | Main board connector  | Mates with            |
+|                       |                       | EVAL-SDP-CB1Z for SPI |
+|                       |                       | communication and     |
+|                       |                       | power                 |
++-----------------------+-----------------------+-----------------------+
+| J3                    | Barrel jack (bench    | 7V–9V input; selected |
+|                       | top supply)           | via LK2 jumper        |
+|                       |                       | (Position A)          |
++-----------------------+-----------------------+-----------------------+
+| J5                    | Barrel jack (wall     | 7V–9V input; selected |
+|                       | wart supply)          | via LK2 jumper        |
+|                       |                       | (Position B)          |
++-----------------------+-----------------------+-----------------------+
+| J6                    | Analog input header   | Connect analog        |
+|                       |                       | sensors/signals       |
++-----------------------+-----------------------+-----------------------+
+| J11                   | Analog input header   | Additional analog     |
+|                       |                       | input options         |
++-----------------------+-----------------------+-----------------------+
+| A0 / A1               | SMA/SMB footprints    | Differential analog   |
+|                       |                       | input channels        |
++-----------------------+-----------------------+-----------------------+
+| CLK IN                | SMB/SMA jack (not     | Optional external     |
+|                       | inserted by default)  | master clock input    |
++-----------------------+-----------------------+-----------------------+
+| Test Points           | SPI signal access     | CS, SCLK, DIN,        |
+|                       |                       | DOUT/RDY — accessible |
+|                       |                       | by removing R9–R13 0Ω |
+|                       |                       | links                 |
++-----------------------+-----------------------+-----------------------+
+
+No-OS Build Setup
+-----------------
+
+Please see: `https://wiki.analog.com/resources/no-os/build`
+
+No-OS Supported Examples
+------------------------
+
+The initialization data used in the examples is taken out from the
+`Project Source Path <https://github.com/analogdevicesinc/no-OS/tree/main/projects/ad7124-4sdz/src>`__.
+
+Application example
+~~~~~~~~~~~~~~~~~~~
+
+In the example code for the AD7124-4SDZ no-OS project, the
+operation begins with initializing the SPI interface specific to the
+Xilinx platform. The AD7124 ADC device is then configured using the
+``ad7124_setup()`` function, which prepares the ADC by writing the
+necessary settings to its registers. The program proceeds by reading
+each register to confirm these settings. Entering an operational loop,
+the code waits for ADC conversions to become available with
+``ad7124_wait_for_conv_ready()`` and reads the conversion result via
+``ad7124_read_data()``. The obtained raw ADC data is continuously
+printed to the console, demonstrating the integration process of the
+AD7124 ADC within a no-OS environment.
+
+No-OS Supported Platforms
+-------------------------
+
+Xilinx
+~~~~~~~
+
+Hardware Used
+^^^^^^^^^^^^^
+
+- :adi:`EVAL-AD7124-4SDZ`
+- ZedBoard
+
+Connections
+^^^^^^^^^^^
+
++-----------------------+-----------------------+-----------------------+
+| **EVAL-AD7124-4SDZ    | **ZedBoard Pin**      | **Function / Notes**  |
+| Pin**                 |                       |                       |
++-----------------------+-----------------------+-----------------------+
+| CS                    | SPI_CS                | Chip Select           |
++-----------------------+-----------------------+-----------------------+
+| SCLK                  | SPI_CLK               | Serial Clock          |
++-----------------------+-----------------------+-----------------------+
+| DIN                   | SPI_MOSI              | Data In (Master Out   |
+|                       |                       | Slave In)             |
++-----------------------+-----------------------+-----------------------+
+| DOUT/RDY              | SPI_MISO              | Data Out / Data Ready |
+|                       |                       | (Master In Slave Out) |
++-----------------------+-----------------------+-----------------------+
+| R9 to R13             | —                     | Remove 0Ω links to    |
+|                       |                       | access SPI test       |
+|                       |                       | points directly       |
++-----------------------+-----------------------+-----------------------+
+| Test Points           | ZedBoard Expansion    | Wire SPI signals to   |
+|                       |                       | Pmod or FMC header    |
+|                       |                       | pins                  |
++-----------------------+-----------------------+-----------------------+
+
+Consult the ZedBoard User Guide for Pmod or FMC header pinouts. The
+ZedBoard provides several Pmod (2x6) headers and an FMC-LPC connector
+suitable for digital I/O.
+
+Double-check that all grounds are connected and consistent between the
+two boards.
+
+Verify the logic voltage levels are compatible. The AD7124-4 supports
+digital I/O supply (IOVDD) between 1.65V and 3.6V.
+
+Build Command
+^^^^^^^^^^^^^
+
+.. code-block:: bash
+
+   cp <SOME_PATH>/system_top.xsa .
+   # to delete current build
+   make reset
+   # to build the project
+   make
+   # to flash the code
+   make run
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		.. include:: ../../../../../projects/ad7124-4sdz/README.rst