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当我的 Android NFC 手机点击它时，我需要读取存储在 NFC 板上的文本记录。现在我不确定这是一种什么样的操作模式。是否可以让 NFC 板表现得像 nfc 标签，以便我可以使用 NFC 手机作为阅读器读取它？

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是的。你说的对。您必须将板子做成 nfc 标签，然后使用 nfc 阅读器（如手机或 PN532 板）读取它。

更新：我认为您需要动态 NFC 标签，例如 TI 的 M24SR。它可以通过I2C存储数据，并通过手机读取。

于 2016-02-24T07:27:09.293 回答
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我认为如果您想将文本记录发送到 Android，那么您必须将数据格式化为 NDEF 消息，因为手机只能理解 ndef 格式的数据。

于 2015-05-29T10:59:42.097 回答
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Referring the data sheet of Arduino PN532 https://www.electroschematics.com/14474/nfc-rfid-module-pn532/ following are to be noted: - Works as a 1443-A card or a virtual card - Supports NFC with Android phone It acts as a Type-A tag and you can read it using the phone

Referring to a) PN532 spec, https://www.nxp.com/docs/en/user-guide/141520.pdf

  1. Virtual Card means that the couple PN532+SAM is seen as only one contactless SAM card from the external world.
  2. In the Virtual Card mode, the PN532 acts as real contactless card, and all the responses to external requests are handled by the SAM itself; neither the PN532 nor the host controller have to take care of the data exchanges. The PN532 acts just as bridge (analog front-end + antenna) between the PCD and the SAM.

b) https://community.nxp.com/thread/433429

PN532 doesn't include a SAM, but needs to be attached separately

Read of this data is not a P2P operation, but is a Tag read operation

于 2019-09-16T08:24:43.560 回答