M24SR64 Informations

[henri]

Posted on May 19, 2014 at 19:38

Hi ST community ! :)

For a projet I�m working on, I need to save some informations coming from a �C (time, date and pressure) into a memory that must be read without any wired connections. So the NFC/RFID protocol seems to be the most appropriate way to do the trick.

On the internet I could find the M24SR64 and it seems to match well with my application. Indeed, the �C will write data into the M24SR64 memory using I�C protocol and a NFC/RFID reader will ask the device to receive data when the system will be turned off.

However, I have some questions� I don�t want to use a smartphone to receive data from memory but I would prefer an NFC/RFID reader. Is it possible? If yes, can you give me some reader references?

Then, I guess there are special commands the reader should ask to receive the memory content. Is it possible to do it with standard RFID/NFC reader?

Thank you a lot for your help,

Henri #reader #m24sr #rfid #reader-command

[awong1900]

Posted on May 22, 2014 at 14:01

I think yes. Only need the reader support the ISO 14443-4 protcol.

[kahmadi29]

Posted on July 28, 2014 at 14:19

Hello Friends,

I am a newcomer in this website and I need your help.I bought a M24SR NFC tag to do a project as following : I wrote an android application in Eclipse consist of four buttons to increase and decrease the ambient temperature and also setpoint temperature.The output of the button is one byte(0~255) and i want to transfer this value from built-in NFC smartphone to M24SR baord. Then by using I2C communication between this board and Microcontroller, I can decrease and Increase the temperature of a heating system which connected to output port of Microcontroller.Would you please help me how can I write the code in Eclipse to transfer output value of my android application to M24SR board through built-in NFC smartphone?It is highly appreciated to answer me soon,Have a nice day,    

[awong1900]

Posted on July 31, 2014 at 05:48

Hi ahmadi,

Write the ndef message to nfc tag. Then the

Microcontroller will get the message to excute the job.

I have a app demo on github:https://github.com/nfcwormhole/NFC-Flower

Let me know if you have any questions.

[kahmadi29]

Posted on August 10, 2014 at 11:38

Hello Ten,

Many thanks for your answer. Let me to explain you exactly what I need : I bought a M24SR-Discovery kit from ST to evaluate NFC function and learn how to do my project.I attached the full project(android app code and Microcontroller code) to this email.There are four LEDs on this kit that are flashing and there is a sliding mode that you can increase and decrease the speed of flashing and for each of these LEDs,there is a key in android app. I need a dimming code instead of flashing code,the code is complicated for me and I can not understand how can change this code from flashing mode to dimming mode. I need two keys in android app(at the moment,there are four keys for on/off of four LEDs) one of them for increasing the light intensity of one of these LED and another key to decrease the light intensity of this LED.I tried many times to change this code from boolean(on/off) to dimming(one byte : 0-255) but I got many errors.I also wrote the email to ST to help me and if they have the dimming code,send me but nobody answer me.even I am ready to pay for this project because this is very important project for me. Please help me.If you can write the dimming code for me,please write for me and sent it to me.I worked with java already but this code is complicated for me.Even I am ready to pay for it. Thanks a lot, I am waiting for your reply, Kamran From: Ten Wong Posted: Thursday, July 31, 2014 5:48 AM Subject: M24SR64 Informations Hi ahmadi, Write the ndef message to nfc tag. Then the Microcontroller will get the message to excute the job. I have a app demo on github:https://github.com/nfcwormhole/NFC-Flower Let me know if you have any questions. ________________ Attachments : stsw-m24sr001.zip : https://st--c.eu10.content.force.com/sfc/dist/version/download/?oid=00Db0000000YtG6&ids=0680X000006HzMD&d=%2Fa%2F0X0000000bKS%2Fp3RXtUbf28uMNA1_e7vXItCMVk2nsCBYi58VL0sMFjs&asPdf=falsestsw-m24sr002.zip : https://st--c.eu10.content.force.com/sfc/dist/version/download/?oid=00Db0000000YtG6&ids=0680X000006HzM3&d=%2Fa%2F0X0000000bKR%2FJ9Qr1ahc0fOchhA1dKotcE7LKpkGWxzmhZK8Pjqh9w8&asPdf=falsestsw-m24sr003.zip : https://st--c.eu10.content.force.com/sfc/dist/version/download/?oid=00Db0000000YtG6&ids=0680X000006HzLt&d=%2Fa%2F0X0000000bKQ%2FsHwUBsTPYyDW0zAHH.p30gWGoPO1nL12MwkMMiqQcCQ&asPdf=false

[Anais GALLIGANI · Accepted solution]

Posted on June 30, 2015 at 14:21

Good day,

You can use RF transceiver board that is available in the M24LR-discovery kit. On the AN3954, you can find some example of source code if you need to create your own software. And all the command for the M24SR might be found in the 5.6.7 (binary command) of the DS (for ex :

http://www.st.com/web/catalog/mmc/FM76/CL1766/SC1412/SS1812/PF259140?s_searchtype=partnumber

) Have a nice day, All the best, ST NFC/RFID support