blocks|key|100662|text|答案|type|unstyled|depth|inlineStyleRanges|offset|length|style|BOLD|entityRanges|data|100663|更新2020mar29hkt+2040|100664|第1部分-+libnfc+v1.17+I2C配置测试确定|100665|OP在测试libnfc+I2C模式和SPI模式方面没有成功。我尝试了I2C模式，发现一切都还好。我猜OP没有设置配置文件，也没有设置“自动扫描=真”。请参阅附录A中的libnfc171配置文件示例。PS+-+(1)我的NFC阅读器可以检测到标签，没有任何问题。(2)我使用的是Rpi4B+buster+2020mar13。|100666|第2部分-现在测试SPI模式2020mar29hkt+2044|100667|Sun方正配置指令建议降低SPI速度50+SPI。因此，我更改了/bbo/config.txt文件，如附录F所示。|100668|/继续，..。|100669|参考资料|100670|(1)+OP的NFC+RFID控制器模块|100671|(2)+SunFounder+Rpi+PN532+NFC模块教程|100672|(3)+Libnfc+NFC库|100673|(4)+Libnfc配置手册|100674|(5)+Libnfc主页|100675|(6)+Libnfc:配置|100676|(7)+Libnfc:+nfc-列表|100677|(8)+MIFARE卡|100678|附录|100679|附录A-安装libnfc+1.7.1|100680|​|100681|📷|atomic|100682|100683|附录B-阅读标签|100684|100685|100686|100687|附录C-+NFC阅读器测试|100688|100689|100690|100691|附录D-我的NFC阅读器和标签|100692|100693|100694|100695|附录E-+PN532+NFC阅读器V3布线|100696|100697|100698|100699|使用libnfc+1.1.7测试PN532的附录for配置|100700|100701|100702|100703|entityMap|0|LINK|mutability|MUTABLE|url|https://www.amazon.ca/ASHATA-Controller-Raspberry-Interface-Switching/dp/B07XFNDHNS|1|http://wiki.sunfounder.cc/index.php?title=PN532_NFC_Module_for_Raspberry_Pi|2|http://nfc-tools.org/index.php/Libnfc|3|http://nfc-tools.org/index.php/Libnfc:configuration|4|http://nfc-tools.org/index.php/Main_Page|5|6|http://nfc-tools.org/index.php/Libnfc:nfc-list|7|http://nfc-tools.org/index.php/MIFARE|8|IMAGE|IMMUTABLE|imageUrl|https://developer.qcloudimg.com/http-save/yehe-900000/eea9acb4ef1373d7b1fc7e691cf077af.jpg|imageAlt|9|https://developer.qcloudimg.com/http-save/yehe-900000/457d6c3c24f5b76f6dd7efd8883d925d.jpg|10|https://developer.qcloudimg.com/http-save/yehe-900000/a098c6fd673cba92676e4d6740367d46.jpg|11|https://developer.qcloudimg.com/http-save/yehe-900000/83b97269dbe46efb5984330b9da79096.jpg|12|https://developer.qcloudimg.com/http-save/yehe-900000/ece3c3d529bd5e25bd2da9304f5c5fdb.jpg|13|https://developer.qcloudimg.com/http-save/yehe-900000/31bb3a22f2edb55518dced77abd41c3d.jpg^0|0|2|0|0|0|0|0|0|0|0|4|0|4|G|0|0|4|S|1|0|4|B|2|0|4|A|3|0|4|8|4|0|4|9|5|0|4|E|6|0|4|7|7|0|0|2|0|0|0|0|1|8|0|0|0|0|0|1|9|0|0|0|0|0|1|A|0|0|0|0|0|1|B|0|0|0|0|0|1|C|0|0|0|0|0|1|D|0|0^^$0|@$1|2|3|4|5|6|7|39|8|@$9|3A|A|3B|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|3C|8|@]|D|@]|E|$]]|$1|H|3|I|5|6|7|3D|8|@]|D|@]|E|$]]|$1|J|3|K|5|6|7|3E|8|@]|D|@]|E|$]]|$1|L|3|M|5|6|7|3F|8|@]|D|@]|E|$]]|$1|N|3|O|5|6|7|3G|8|@]|D|@]|E|$]]|$1|P|3|Q|5|6|7|3H|8|@]|D|@]|E|$]]|$1|R|3|S|5|6|7|3I|8|@$9|3J|A|3K|B|C]]|D|@]|E|$]]|$1|T|3|U|5|6|7|3L|8|@]|D|@$9|3M|A|3N|1|3O]]|E|$]]|$1|V|3|W|5|6|7|3P|8|@]|D|@$9|3Q|A|3R|1|3S]]|E|$]]|$1|X|3|Y|5|6|7|3T|8|@]|D|@$9|3U|A|3V|1|3W]]|E|$]]|$1|Z|3|10|5|6|7|3X|8|@]|D|@$9|3Y|A|3Z|1|40]]|E|$]]|$1|11|3|12|5|6|7|41|8|@]|D|@$9|42|A|43|1|44]]|E|$]]|$1|13|3|14|5|6|7|45|8|@]|D|@$9|46|A|47|1|48]]|E|$]]|$1|15|3|16|5|6|7|49|8|@]|D|@$9|4A|A|4B|1|4C]]|E|$]]|$1|17|3|18|5|6|7|4D|8|@]|D|@$9|4E|A|4F|1|4G]]|E|$]]|$1|19|3|1A|5|6|7|4H|8|@$9|4I|A|4J|B|C]]|D|@]|E|$]]|$1|1B|3|1C|5|6|7|4K|8|@]|D|@]|E|$]]|$1|1D|3|1E|5|6|7|4L|8|@]|D|@]|E|$]]|$1|1F|3|1G|5|1H|7|4M|8|@]|D|@$9|4N|A|4O|1|4P]]|E|$]]|$1|1I|3|1E|5|6|7|4Q|8|@]|D|@]|E|$]]|$1|1J|3|1K|5|6|7|4R|8|@]|D|@]|E|$]]|$1|1L|3|1E|5|6|7|4S|8|@]|D|@]|E|$]]|$1|1M|3|1G|5|1H|7|4T|8|@]|D|@$9|4U|A|4V|1|4W]]|E|$]]|$1|1N|3|1E|5|6|7|4X|8|@]|D|@]|E|$]]|$1|1O|3|1P|5|6|7|4Y|8|@]|D|@]|E|$]]|$1|1Q|3|1E|5|6|7|4Z|8|@]|D|@]|E|$]]|$1|1R|3|1G|5|1H|7|50|8|@]|D|@$9|51|A|52|1|53]]|E|$]]|$1|1S|3|1E|5|6|7|54|8|@]|D|@]|E|$]]|$1|1T|3|1U|5|6|7|55|8|@]|D|@]|E|$]]|$1|1V|3|1E|5|6|7|56|8|@]|D|@]|E|$]]|$1|1W|3|1G|5|1H|7|57|8|@]|D|@$9|58|A|59|1|5A]]|E|$]]|$1|1X|3|1E|5|6|7|5B|8|@]|D|@]|E|$]]|$1|1Y|3|1Z|5|6|7|5C|8|@]|D|@]|E|$]]|$1|20|3|1E|5|6|7|5D|8|@]|D|@]|E|$]]|$1|21|3|1G|5|1H|7|5E|8|@]|D|@$9|5F|A|5G|1|5H]]|E|$]]|$1|22|3|1E|5|6|7|5I|8|@]|D|@]|E|$]]|$1|23|3|24|5|6|7|5J|8|@]|D|@]|E|$]]|$1|25|3|1E|5|6|7|5K|8|@]|D|@]|E|$]]|$1|26|3|1G|5|1H|7|5L|8|@]|D|@$9|5M|A|5N|1|5O]]|E|$]]|$1|27|3|1E|5|6|7|5P|8|@]|D|@]|E|$]]|$1|28|3|-4|5|6|7|5Q|8|@]|D|@]|E|$]]]|29|$2A|$5|2B|2C|2D|E|$2E|2F]]|2G|$5|2B|2C|2D|E|$2E|2H]]|2I|$5|2B|2C|2D|E|$2E|2J]]|2K|$5|2B|2C|2D|E|$2E|2L]]|2M|$5|2B|2C|2D|E|$2E|2N]]|2O|$5|2B|2C|2D|E|$2E|2L]]|2P|$5|2B|2C|2D|E|$2E|2Q]]|2R|$5|2B|2C|2D|E|$2E|2S]]|2T|$5|2U|2C|2V|E|$2W|2X|2Y|-4]]|2Z|$5|2U|2C|2V|E|$2W|30|2Y|-4]]|31|$5|2U|2C|2V|E|$2W|32|2Y|-4]]|33|$5|2U|2C|2V|E|$2W|34|2Y|-4]]|35|$5|2U|2C|2V|E|$2W|36|2Y|-4]]|37|$5|2U|2C|2V|E|$2W|38|2Y|-4]]]]

Answer

Update 2020mar29hkt2040

Part 1 - libnfc v1.17 I2C config tested OK

The OP has no luck in testing libnfc I2C mode and SPI mode. I tried I2C mode and found everything OK. I guess the OP has not set the config file, or has not set "auto scan = true". See my example libnfc171 config file in Appendix A. PS - (1) My NFC reader can detect a tag without any problem. (2) I am using Rpi4B buster 2020mar13.

<hr>

Part 2 - Now testing SPI mode 2020mar29hkt2044

Sunfounder config instructions recommends lowering SPI speed 50kHz. So I have changed the /bbo/config.txt file as shown in Appendix F.

/ to continue, ...

<hr>

References

(1) <a href="https://www.amazon.ca/ASHATA-Controller-Raspberry-Interface-Switching/dp/B07XFNDHNS" rel="nofollow noreferrer">The OP's NFC RFID Controller Module</a> 

(2) <a href="http://wiki.sunfounder.cc/index.php?title=PN532_NFC_Module_for_Raspberry_Pi" rel="nofollow noreferrer">SunFounder Rpi PN532 NFC Module Tutorial</a>

(3) <a href="http://nfc-tools.org/index.php/Libnfc" rel="nofollow noreferrer">Libnfc NFC Library</a>

(4) <a href="http://nfc-tools.org/index.php/Libnfc:configuration" rel="nofollow noreferrer">Libnfc Configuration Manual</a>

(5) <a href="http://nfc-tools.org/index.php/Main_Page" rel="nofollow noreferrer">Libnfc Main Page</a>

(6) <a href="http://nfc-tools.org/index.php/Libnfc:configuration" rel="nofollow noreferrer">Libnfc: configuration</a>

(7) <a href="http://nfc-tools.org/index.php/Libnfc:nfc-list" rel="nofollow noreferrer">Libnfc: nfc-list</a>

(8) <a href="http://nfc-tools.org/index.php/MIFARE" rel="nofollow noreferrer">MIFARE Card</a>

<hr>

Appendices

Appendix A - Installing libnfc 1.7.1 

<a href="https://i.stack.imgur.com/UUpvb.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/UUpvb.jpg" alt="nfc config"></a>

<hr>

Appendix B - Reading a tag

<a href="https://i.stack.imgur.com/AVR62.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/AVR62.jpg" alt="reading a tag"></a>

<hr>

Appendix C - NFC Reader Tested 

<a href="https://i.stack.imgur.com/4ORuH.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/4ORuH.jpg" alt="NFC"></a>

<hr>

Appendix D - My NFC readers and tags

<a href="https://i.stack.imgur.com/8O813.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/8O813.jpg" alt="nfc readers and tags"></a>

<hr>

Appendix E - PN532 NFC reader V3 Wiring

<a href="https://i.stack.imgur.com/6mXHc.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/6mXHc.jpg" alt="pn532 v3"></a>

<hr>

Appendix F - SPI configuration for testing PN532 using libnfc 1.1.7

<a href="https://i.stack.imgur.com/Wn3ex.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/Wn3ex.jpg" alt="spi config"></a>

<hr>

I have been trying to detect an tag using the PN532 module that I bought from amazon here:

<a href="https://www.amazon.ca/ASHATA-Controller-Raspberry-Interface-Switching/dp/B07XFNDHNS" rel="nofollow noreferrer">https://www.amazon.ca/ASHATA-Controller-Raspberry-Interface-Switching/dp/B07XFNDHNS</a> 

I followed the tutorial here:

<a href="http://wiki.sunfounder.cc/index.php?title=PN532_NFC_Module_for_Raspberry_Pi" rel="nofollow noreferrer">http://wiki.sunfounder.cc/index.php?title=PN532_NFC_Module_for_Raspberry_Pi</a>

I tried using both I2C or SPI, but both results just give me the following when I run nfc-poll:

<pre><code>nfc-poll uses libnfc 1.7.1
NFC reader: pn532_spi:/dev/spidev0.0 opened
NFC device will poll during 30000 ms (20 pollings of 300 ms for 5 modulations)
nfc_initiator_poll_target: Success
</code></pre>

It seems like the PN532 is connected to the Pi properly, but the tag is not being detected or printing any info. I am beginning to wonder if the problem is with the PN352 device itself. Maybe I got a faulty one?

Thanks

Problem with detecting badge with PN532 and Raspberry Pi

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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我一直试图使用我从亚马逊购买的PN532模块检测到一个标记：我在这里学习了本教程：我尝试同时使用I2C或SPI，但是当我运行nfc-轮询时，这两个结果都给出了如下结果：nfc-poll uses libnfc 1.7.1NFC reader: pn532_spi:/dev/spidev0.0 openedNFC device will poll during 30000 ms (20 pollin

用PN532和Raspberry Pi检测徽章的问题-腾讯云开发者社区-腾讯云

问用PN532和Raspberry Pi检测徽章的问题
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