Linux code for interacting with the m24sr x -nucleo board

[darla14]

Posted on November 23, 2015 at 07:24

HI,

I wanted to interact with X-NUCLEO-NFC01A1 (m24sr NFC dynamic tag ) by interfacing it with embedded linux board. I have googled and found this link and code : https://github.com/whaleygeek/pi_m24sr Is there any other sample code and hardware interfacing (sda,scl,vdd etc) information for interfacing m24sr with embedded board and using it for reading.writing. Or any m24sr linux drivers? Kindly let me know soon ! Thanks and Rgds, Rp #nfc01a1 #linux-driver #m24sr

[JP Miller · Accepted solution]

Posted on November 23, 2015 at 15:47

Hello,

Sample code for interacting with X-NUCLEO-NFC01A1 can be found on the page related to:

Dynamic NFC tag expansion board based on M24SR for STM32 Nucleo

http://www.st.com/web/en/catalog/tools/PF260759

and specifically the Firmware for STM32F103 to communicate through the I2C interface to the M24SR device

http://www.st.com/web/en/catalog/tools/PF259178

Please be aware this example code is developed for ST32 ARM core, and not Linux.

SDA and SCL are the standard I2C signals which are available on the Arduino connector CN1 header.

VDD and VSS must be supplied on the power and ground connections on CN2.

http://www.st.com/st-web-ui/static/active/en/resource/technical/document/user_manual/DM00122547.pdf

 offers more information on the X-NUCLEO-NFC01A1 board itself

We hope it will help you.

Best regards, Have a good day

[darla14]

Posted on November 24, 2015 at 05:30 thanks for the prompt reply.I can interact with the nfc tag using x-nucleo code but what i was looking for was the way to connect it to some host(linux) and the hardware connection and any sample code I can run on the host to interact with it.

[Rene Lenerve]

Posted on November 27, 2015 at 13:49

Hi,

At this time, we do not have sample code under Linux platform for m24sr. To communicate with the m24sr you can connect it through the I²C of your Linux board (for example, I've attached a picture of connection between Raspberry Pi and m24sr, with X-NUCLEO-NFC01A1). Then you can use the driver for m24sr from the STM32 software package and port it to the Linux environment. Hope this will help you. Kind Regards ________________ Attachments : Pi_M24SR.jpg : https://st--c.eu10.content.force.com/sfc/dist/version/download/?oid=00Db0000000YtG6&ids=0680X000006HzLL&d=%2Fa%2F0X0000000bKT%2FfAbKhL_AdVJ44KBfIOV4B5l6My3U10rcuEaDpxaINnY&asPdf=false

[darla14]

Posted on November 30, 2015 at 04:56Thanks for the reply.May I know the values of R1 and R5?Do I have to mount it or are they are internally embedded in the Nucleo Board.Thanks in advance ,Rgds,Rp

[JP Miller]

Posted on November 30, 2015 at 17:32

Hello,

Figure 17, page 71 of  the M24SR datasheet

http://www.st.com/web/en/resource/technical/document/datasheet/DM00067892.pdf

will give you maximum values of the resistance to use on the SCL/SDA signals. We hope this will help you. Have a good day.

[darla14]

Posted on December 08, 2015 at 13:28Thankyou very much .It helped !!!