M24LR Dsicovery kit with External ANT7-T-M24SR

[Gaurav Bhatia]

Posted on May 07, 2018 at 18:50

Hello ST Community,

I have recently started working on a project which has a antenna grid and each antenna represents a set location. So if tag is scanned at particular antenna location then it should communicate and transfer data to uC.The goal of the project is to track locations of tags based on tag ID received from particular antenna. I can planning to use I2C protocol with M24LR kit. 

Can I implement and test my initial setup using M24LR-discovery kit and use M24LR software package provided by ST.

Thanks,

[Rene Lenerve · Accepted solution]

Posted on May 25, 2018 at 11:42

Hi

rt2gaurav

,

I'm not sure to fully understand your use case.

What I've understood is, you have a grid of antenna (I suppose each antenna is connected to a tag, otherwise it is not possible for a tag to manage multiple antenna). You have a µC connected to the tags, for that you need an I²C per Tag as the device address of the tag is the same for all tags.

Is that right?

To answer your question, The M24LR-discovery kit is based on STM8 µC, so if you plan to use this type of MCU you can use this kit. But if you plan to use a STM32 µC, you can use the

http://www.st.com/content/st_com/en/products/ecosystems/stm32-open-development-environment/stm32-nucleo-expansion-boards/stm32-ode-connect-hw/x-nucleo-nfc02a1.html

expansion board and X-CUBE-NFC2 software for your project (it uses the Nucleo environment for the M24LR chip).

You can also use the

http://www.st.com/content/st_com/en/products/ecosystems/stm32-open-development-environment/stm32-nucleo-expansion-boards/stm32-ode-connect-hw/x-nucleo-nfc04a1.html

expansion board in the Nucleo environment (which is based on the ST25DV). The chip is almost the same as M24LR, a RAM buffer is available, which can improve data transfer between reader and µC if you need it, there is also more feature on interrupt management, ....

I let you check the DataSheet of both product

http://www.st.com/resource/en/datasheet/m24lr04e-r.pdf

and

http://www.st.com/resource/en/datasheet/st25dv04k.pdf

to check your needs.

I hope this will help you.

Best Regards.