AD469x no-OS Example Project

See projects/ad469x_evb (doxygen) for the Doxygen documentation.

The EVAL-AD4696 is designed to demonstrate AD4696 performance and provide access to its many configuration options via an easy-to-use ACE plugin graphical interface. The AD4696 is a 16-channel, 16-bit, 1 MSPS, multiplexed successive approximation register (SAR) analog-to-digital converter (ADC) that enables high performance data acquisition of multiple signals in a small form factor. The AD4696 employs easy drive features and on-chip channel sequencing that simplify hardware and software designs.

The EVAL-AD4696 allows users to quickly evaluate the performance of the AD4696 with no or minimal hardware modifications. The hardware includes two externally driven analog input channels for evaluating AC performance and 14 channels with DC levels generated on board for evaluating DC and settling performance.

Applications

Precision multichannel data acquisition
Industrial process monitoring
Instrumentation
Optical transceiver module monitoring

Hardware Specifications

Power Supply Requirements

The EVAL-AD4696 board is powered through the FMC connector on the ZedBoard. The board uses the ZedBoard's 12V supply rail for its onboard regulators.

No-OS Build Setup

Please see: No-OS Build Guide

No-OS Supported Examples

This project uses the no-OS variant-based build flow. Selecting a variant at build time (--variant <name>) chooses which application is compiled. The initialization data used in the examples is taken out from: Project Common Data Path

Basic Example

This example initializes the AD469x ADC in single-cycle conversion mode, captures samples via AXI DMA, and prints the results over UART.

Standard Sequence Example

This example initializes the AD469x ADC in standard sequence conversion mode (AD469X_SEQ_STANDARD), captures samples via AXI DMA, and prints results over UART.

Advanced Sequence Example

This example initializes the AD469x ADC in advanced sequence conversion mode (AD469X_SEQ_ADVANCED), captures samples via AXI DMA, and prints results over UART.

IIO Example

This example launches an IIOD server on the board so that the user may connect to it via an IIO client. Using IIO-Oscilloscope, the user can configure the ADC and view the measured data on a plot. Uses standard sequence conversion mode.

If you are not familiar with ADI IIO Application, please take a look at: IIO No-OS

If you are not familiar with ADI IIO-Oscilloscope Client, please take a look at: IIO Oscilloscope

No-OS Supported Platforms

Xilinx

Used Hardware

Connections

Connect the EVAL-AD4696 to the ZedBoard via the FMC LPC connector. Connect a USB cable to the ZedBoard USB-UART port. Power the ZedBoard via the 12V barrel jack (J20).

The UART console appears on the ZedBoard USB-UART port at 115200 baud, 8N1.

Build Command

The Xilinx platform uses the CMake/Ninja build system via the no_os_build.py helper script. Available variants: basic, standard_seq, advance_seq, iio. Available boards: zed.

For toolchain setup and prerequisites, see the Xilinx CMake build guide.

# Source the Vitis environment (sets XILINX_VITIS and adds tools to PATH)
source /path/to/Vitis/settings64.sh
# PowerShell (Windows) equivalent:
#   $env:XILINX_VITIS = "<C:\path\to\Vitis>"

cd no-OS

# build the example on the ZedBoard (replace --variant as needed)
python tools/scripts/no_os_build.py build \
   --project ad469x_evb --variant iio --board zed \
   --hardware /path/to/system_top.xsa

# build and flash (requires a connected debug probe)
python tools/scripts/no_os_build.py build \
   --project ad469x_evb --variant iio --board zed \
   --hardware /path/to/system_top.xsa \
   --probe openocd --flash