使用PN7150多次读取Tag之后出现异常

[466231674]

android7.1平台，使用的PN7150型号的NFC，在read tag测试的时候，有概率会引起NFC工作异常(多次read tag之后，read无响应)，在出现异常之后，只能通过设置关闭重新打开才能使NFC正常工作。附件是测试的logcat日志，初步对日志做了分析，在出现如下log之后NFC就不能正常工作了

 09:06:06.724 I/BrcmNfcNfa( 4526): NFA got event 0x0600

 09:06:06.724 I/BrcmNfcNfa( 4526): nfa_rw_handle_event event: NFA_RW_OP_REQUEST_EVT (0x600), flags: 00000001

   09:06:06.724 E/BrcmNfcNfa( 4526): nfa_rw_handle_op_req: not activated

[jimmychan]

have you try to add 'printk' to check where it stop?

[466231674]

hi Jimmy：
I find this log comes up every time(E/BrcmNfcNfa(?4526):?nfa_rw_handle_op_req:?not?activated)，After that, the NFC cannot work

[jimmychan]

Hi Zhonggan,

Nice to talk to you on the phone. You mentioned you have tested on different App. Could you tell me your test steps and which App you used in the test?

Thanks.

[466231674]

hi Jimmy：
You can check the video for the test steps，The video was tested using the apk of the NFC TagWriter，And you can see that from video，The testing process is to use Tag intermittently close to the NFC antenna，When apk detects Tag, it will respond，At the same time, we can hear the response(voice)，In the second half of video，We can see that the NFC is no longer responding，We can't hear the response(voice) as normal，That's what I call the anomaly。
When the apk was tested using the NFC TagInfo，That's not going to happen。Can you give me your email address? I can send the test video to you。tks！

[jimmychan]

jimmy.chan@nxp.com

[466231674]

hi Jimmy，pls check email，tks。

[466231674]

hi Jimmy：

  I used two apk tests, NFC TagWriter.apk and NFC TagInfo.apk

I uploaded two apk to the attachment