The EVAL-CN0409-ARDZ shield is a low to high level water turbidity measurement system in combination with the EVAL-ADICUP360. It uses the ADPD105's ambient light rejection feature to make it ideal for applications where accurate, robust and non-contact turbidity measurements are critical.
When the project is being run for the first time a calibration procedure is required in order to achieve high accuracy results. The user must follow the steps described in the UART terminal when the application is started.
The user has the option to modify the solutions that are used for calibrating the device. Any values can be used for the points that are used for calibration, but a proper distribution along the 0 - 1000 NTU range must be taken into account.
These values can be edited in CN0409.h file inside the include folder within the project structure.
After the calibration sequence is done at least once, the calibration coefficients are saved in the controller flash memory and will be used the next time when a calibration is not done. The calibration can be repeated as desired. If the program is run for the first time and a calibration routine is not done, the program will prompt the user to manually input calibration coefficients.
The following is a list of items needed in order to replicate this demo.
To obtain a most accurate results when taking measurements, process below should take into considerations:
There are two basic ways to program the ADICUP360 with the software for the CN0409.
Using the drag and drop method, the software is going to be a version that Analog Devices creates for testing and evaluation purposes. This is the EASIEST way to get started with the reference design.
Importing the project into CrossCore is going to allow you to change parameters and customize the software to fit your needs, but will be a bit more advanced and will require you to download the CrossCore toolchain.
The software for the ADuCM360_demo_cn0409 demo can be found here:
Prebuilt CN0409 Bin File
Complete CN0409 Source Files
For more information on importing, debugging, or other tools related questions, please see the tools user guide.
Following is the UART configuration.
Select COM Port Baud rate: 9600 Data: 8 bit Parity: none Start: 1 bit Stop: 2 bit Flow Control: none
The official tool we promote for use with the EVAL-ADICUP360 is CrossCore Embedded Studio. For more information on downloading the tools and a quick start guide on how to use the tool basics, please check out the Tools Overview page.
For more detailed instructions on importing this application/demo example into the CrossCore Embedded Studios tools, please view our How to import existing projects into your workspace section.
For more detailed instructions on importing this application/demo example into the CrossCore Embedded Studios tools, please view our How to configure the debug session section.
This project contains: system initialization part, setting system clock, enabling clock for peripherals; i2c interface, UART via P0.6/P0.7; UART read/write functions; Memory read/write functions; turbidity calculations;
In the src and include folders you will find the source and header files related to CN0409 software application. The Communication.cpp/h files contain UART and I2C specific data, meanwhile the CN0409.cpp/h files contain the calculation part and Flash.cpp/h provide memory management. .
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