Android 7.0 problem in locked 24SR

[So.Sunny]

Posted on January 19, 2018 at 04:27

My Samsung mobile upgraded from Android 6.0 to 7.0. But after that the 24SR seems can't detect from mobile NFC. 

It happens only after the 24SR IC locked in read/write. For unlocked the chip by 24SR discovery board hardware, 24SR can detect by mobile again. I tested in Android 4.4,5.0 and 6.0 and all work. So is there any changes in Android 7.0 that cause this problem ? Please advise and thanks.

[JP Miller]

Posted on January 22, 2018 at 10:46

Dear Customer,

This behavior is indeed unexpected. In order to help you out, could you please share the content of the System File that is programmed in M24SR before and after the lock?

Have a good day,

Regards,

[So.Sunny]

Posted on January 22, 2018 at 13:54

Dear All,

I check the system file content and all info. is the same before and

after lock.

System file length : 18

I2C Protection : the I2C host has the SuperUser right

I2C Watchdog : watchdog is off

GPO Config : when RF session is opened

GPO low when command is computed

GPO low when programming

GPO low when session active

when an I2C session is opened

GPO low when session active

RF Enable : RF interface enabled

Memory size: 8192

Ndef file number : 1

UID :0284000206C384

ICRef :0x84

Remark: I use another LG mobile installed Android 7.0 ex-factory(not

upgraded) and work all OK with locked 24SR.

So the problem is only after I upgraded my Samsung C5 Pro mobile to

Android 7.0 from 6.0.

Thanks and any information you need please let me know.

best regards

Sunny.

在 2018-01-22 17:46，NFC product support3 写�：

STMICROELECTRONICS COMMUNITY

RE: ANDROID 7.0 PROBLEM IN LOCKED 24SR

reply from NFC product support3 in ST25 NFC/RFID Tags and Readers - View the full discussion

[JP Miller]

Posted on January 24, 2018 at 16:31

Hello Sunny,

as Android is evolving it is indeed possible some specific versions have particular issues.

Could you please send also the content of the Capability Container?

Based on that, different alternatives can be explored.

Best regards,

Jose

[So.Sunny]

Posted on January 26, 2018 at 05:55

Hi,

CC file without lock read and write.

max read APDU 246

max write APDU 246

CCLEN 15

Map version 0x20

TLV control file

TLV type :04

length : 6

File ID : 0x0001

TLV File size :8192

TLV read access : 00

TLV write access :00

CC file with lock read and write , all is the same except ( TLV read and

write access : 80)

best regards

Sunny.

在 2018-01-24 23:32，Jose Mangione 写�：

STMICROELECTRONICS COMMUNITY

RE: ANDROID 7.0 PROBLEM IN LOCKED 24SR

reply from Jose Mangione in ST25 NFC/RFID Tags and Readers - View the full discussion

[JP Miller]

Posted on January 30, 2018 at 14:31

Hello Sunny,

It is difficult to comment precisely on the changes that might have happened between Android 6.0 and 7.0 on a particular phone, which is phone and manufacturer dependent.

Custom applications based on Android can normally handle proprietary read and write access conditions.

Proprietary write access is part of the NFC Forum T4T specifications. Android is natively supporting Proprietary write access conditions since Android 8.1, meaning that for example an url that is write protected on a tag (write access rights = 80h), will result in a web browser opening on that url. Smartphone manufacturers are sometimes customizing Android for their own purposes. I advise you to check with the smartphone manufacturer for updates of Android supporting this capability.

Proprietary read access is also possible. The difference is that Android does not support it natively as NFC Forum requires the NDEF file to be readily accessible (read access rights = 00h), meaning a NDEF file with an url protected in read access will not open a web browser. A custom application will be able to read the NDEF file though once the proper password has been presenting.

I hope this answer your question.

Regards,

Jose

[So.Sunny]

Posted on February 06, 2018 at 10:54

Hi Jose,

Thanks and have you test any upgraded 6.0 to 7.0 phone working OK ?

best regards

Sunny.

在 2018-01-30 21:32，Jose Mangione 写�：

STMICROELECTRONICS COMMUNITY

RE: ANDROID 7.0 PROBLEM IN LOCKED 24SR

reply from Jose Mangione in ST25 NFC/RFID Tags and Readers - View the full discussion

[JP Miller]

Posted on February 07, 2018 at 16:57

Hi Sunny,

We've seen no difference of behavior on the phones we've tested between 6.0 and 7.0 and upgrading to 7.0 from a native support or from a custom application point of view. It sounds like it could this particular phone that behaves differently. If

Samsung C5 Pro supports it, w

ould it be possible for you to upgrade to 8.1 and see if the behavior is now as you expect?

 Regards,

[So.Sunny]

Posted on February 07, 2018 at 18:02

Hi Miller,

Thanks for information. I will test my phone once can upgrade to 8.1

Best regards

Sunny.

在 2018-02-07 23:59，JP Miller 写�?�：

STMICROELECTRONICS COMMUNITY

RE: ANDROID 7.0 PROBLEM IN LOCKED 24SR

reply from JP Miller in ST25 NFC/RFID Tags and Readers - View the full discussion

________________ Attachments : blocked.gif : https://st--c.eu10.content.force.com/sfc/dist/version/download/?oid=00Db0000000YtG6&ids=0680X000006Hxt7&d=%2Fa%2F0X0000000b3P%2Fo4helxz2W6HNR_jq6wyWwDBR4QivFoBu1PohpBynot4&asPdf=false

[So.Sunny]

Posted on February 08, 2018 at 05:35

Hi Miller,

Moreover, any source code for iPhone NFC App ?

I can't find in website.

Thanks and best regards

Sunny.

在 2018-02-07 23:59，JP Miller 写�?�：

STMICROELECTRONICS COMMUNITY

RE: ANDROID 7.0 PROBLEM IN LOCKED 24SR

reply from JP Miller in ST25 NFC/RFID Tags and Readers - View the full discussion

________________ Attachments : blocked.gif : https://st--c.eu10.content.force.com/sfc/dist/version/download/?oid=00Db0000000YtG6&ids=0680X000006HxiY&d=%2Fa%2F0X0000000b3M%2F5Cz_mbo6CON2zZ1CD1ulrYbFepn1qjfJQHZDtMlG0HY&asPdf=false