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[问答] 有人用过PN532吗?PDFI尝试通过RS232与PN532通信但没有得到任何响应
254 PN532 RS232 示波器
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嗨,我制作了一个原型,基于以下板:HTTP://PooRoopt.COM/RooptPress/WP CONTRON/XOpads/2015/08/PARROBOTTHYCSR002YPN532-NFC-RIDID。PDFI尝试通过RS232与PN532通信,但我没有得到任何响应。检查连接和电压水平,一切似乎都很好,只是我没有看到在我的示波器的晶体终端的振荡电压。我问这个问题在制造商的论坛,但没有答案,所以排除了可能的错误在TH。我买了PCB电路板的设计,我也发现没有振荡。可能是因为芯片处于低功耗模式并使其脱离昏睡状态,所以您应该发送以下字节:55×55,00,115200,BPMI的速度已经从我的计算机(COM)到SE。这是阴谋,但我没有得到设备的响应。谢谢你的任何评论或建议。

以上来自于百度翻译


      以下为原文

     
Hi.

I made a prototype based on the following board:


http://www.playrobot.com/robotpr ... _PN532-NFC-RFID.pdf




I tried to communicate via RS232 with PN532, but I don't get any response. Check the connections and voltage levels and everything seems fine, except that I don't see the oscillating voltage at the terminals of the crystal with my oscilloscope.

I asked this question in the forum of the manufacturer of the device but there is no answer, so to rule out a possible error in the design of the PCB I bought that plate and I have also discovered that there is no oscillation.

Possibly it is because the chip is in low power mode and get it out of that lethargy you should send the following bytes:

55 55 00 00 00

with a speed of 115,200 bpm

I have tried from my computer (COM) to send that plot but I do not get a response from the device.

Thanks in advance for any comments or suggestions

0
2018-10-11 08:38:42   评论 分享淘帖 邀请回答
2个回答
BPM?看起来像每分钟比特。我猜你的意思是每秒比特。

以上来自于百度翻译


      以下为原文

   
bpm? Looks like bits per minute.
I guess you meant bits per second.
2018-10-11 08:49:56 评论 举报
BPM?看起来像每分钟比特。我猜你的意思是每秒比特。波特,抱歉。

以上来自于百度翻译


      以下为原文

   
bpm? Looks like bits per minute.
I guess you meant bits per second.

</blockquote>
Baud, sorry
2018-10-11 09:05:29 评论 举报
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