CN0561 no-OS Example Project

See projects/cn0561 (doxygen) for the Doxygen documentation.

Supported Evaluation Boards

Overview

The EVAL-CN0561-ARDZ is a data acquisition system tailored for vibration analysis, primarily utilizing IEPE sensors. Designed to evaluate and forecast mechanical health, it employs a precise 24-bit AD4134 ADC capable of continuous-time sampling at 1.496 MSPS. Supplementing this is the LTC6373, a differential output instrumentation amplifier, and the LT3092, a programmable two-terminal current source, enhancing data processing efficiency. Its compatibility with Arduino systems facilitates integration with diverse platforms, offering robust fault detection for increased system reliability.

Applications

  • Data Acquisition for IEPE Sensors

  • Temperature Monitoring

  • Strain Measurement

  • Shock Detection

  • Displacement Sensing

  • Condition-Based Monitoring

Hardware Specifications

Power Supply Requirements

The EVAL-CN0561-ARDZ requires a DC power supply input ranging from 9V to 12V. The board is designed to draw power from a microcontroller or development board via Arduino-style or FMCZ-type connectors. It handles an initial inrush current of up to 200mA for power-up, while steady state operation needs around 250mA. The power system within the board generates necessary operational voltages: 5V and 1.8V for the AD4134 ADC, and +/-15V for the instrumentation amplifier and current source circuits. The LT3092 component provides a constant current of 2.5mA to IEPE sensors. To accommodate potential power fluctuations, a power source capable of delivering 1.5A consistently is recommended.

Connectors

Connector

Type

Description

P1, P2, P3, P4,

Arduino Connectors

General data interfacing with the

P5

evaluation board

P17

Arduino Zio Connector
Supports additional Arduino

expansions

P3

FMCZ Connector

Used for high-speed data acquisition

P6, P7, J6, J8

SMA Connectors
Interface for IEPE sensor connections

and analog signals

P8

Analog Input
Primary input for data acquisition

processes

P9

External Power Input
Supports 9V to 12V DC power for

board operation

P14

External Supply
Provides +/-15V for analog front-end

capabilities

J5, J7

Additional SMA Connectors

Amenities for further analog channels

P11, P12

Optional Connectors
To accommodate extra analog inputs

as required

No-OS Build Setup

Please see: No-OS Build Setup

No-OS Supported Examples

The initialization data used in the examples is taken out from: Project Source Data Path

UART example

In the CN0561 no-OS project, the UART example code establishes communication by configuring the UART interface with key parameters such as UART_DEVICE_ID, UART_IRQ_ID, and UART_BAUDRATE. This setup allows communication at a baud rate of 115200. The UART configuration is conditionally included when IIO_SUPPORT is enabled, integrating the UART for data exchange within the IIO application. This interface supports interaction with the AD713x ADC device, facilitating data acquisition and communication with external applications necessary for industrial diagnostics.

In order to build the uart example, make sure you have the following configuration in the build.json file:

#Use this if you are using a Zedboard as carrier
NEW_CFLAGS=-DCN0561_ZED_CARRIER

#Use this if you are using Cora Z7S as carrier
NEW_CFLAGS=-DCN0561_CORAZ7S_CARRIER

IIO example

The IIO demo is a standard example, provided in most no-OS projects, that launches an IIOD server on the board so that the user may connect to it via an IIO client. Using the IIO Oscilloscope application, users can configure the ADC for data acquisition, using DMA to transfer ADC data to memory and converting raw data into voltage readings accessible via the IIO interface.

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

To build the IIOD demo, add the following flags when invoking make. This will build the IIOD server and the IIO section of the driver:

#Use this if you are using a Zedboard as carrier
IIOD=y NEW_CFLAGS=-DCN0561_ZED_CARRIER

#Use this if you are using Cora Z7S as carrier
IIOD=y NEW_CFLAGS=-DCN0561_CORAZ7S_CARRIER

No-OS Supported Platforms

Xilinx Platform

Used Hardware

Connections - ZedBoard

Component

Connection Details

EVAL-CN0561-ARDZ

Connect to ZedBoard via FMC Connector (P3) for data and power

Power Supply Input

9V to 12V input, typically supplied by ZedBoard

Gigabit Ethernet

Connect Ethernet cable to Host PC for network

Port

communication

SMA Connectors

Connect IEPE sensors to CN0561 SMA connectors

Connections - Cora Z7S

Component

Connection Details

EVAL-CN0561-ARDZ

Plug directly onto Cora Z7S Arduino/chipKIT shield connector

Analog Inputs

A0 to A11 routed from CN0561 analog channels via

A0 to A11

XADC Inputs (FPGA); follow Arduino convention

I/O Voltage Limit

Max 3.4V (absolute max 3.75V); CN0561 must not exceed this

Analog Input Range

Differential: 0V to 1V; Single-ended: scaled to 0V to 3.3V via resistor divider

Power Input

Do not power through CN0561 shield; use Cora Z7S main input only

Build Command

ZedBoard:

cp <SOME_PATH>/system_top.xsa .
# to delete current build
make reset
# to build the project
make PLATFORM=xilinx

make TARGET=cn0561_zed IIOD=y NEW_CFLAGS=-DCN0561_ZED_CARRIER
# to flash the code
make run

Cora Z7S:

cp <SOME_PATH>/system_top.xsa .
# to delete current build
make reset
# to build the project
make PLATFORM=xilinx

make TARGET=cn0561_coraz7s IIOD=y NEW_CFLAGS=-DCN0561_CORAZ7S_CARRIER
# to flash the code
make run