NodeMCU module (ESP8266) using a PN532 NFC chip to read tags and do a thing with UDP
Follow the install instructions for the PN532/NFC library here
Connects to wifi and waits for a NFC tags with specific UIDs. Sends a UDP packet if a matching tag is found.
This specific version is used to unlock a door, hence the unlock() function. (and the IPAddress object called doorIP)
To enable debug message, define DEBUG in PN532/PN532_debug.h, which is part of the NFC library.
Runs on an ESP8266 (nodeMCU v0.9) connected to an adafruit NFC (PN532) shield
Sort of a counterpart to this: https://github.com/Robotto/UDPrx_relay
HW setup:
| NFC | NodeMCU | (ESP) |
|---|---|---|
| SS (CS) | D2 | (GPIO4) |
| IRQ | D3 | (GPIO0) |
| RST | D4 | (GPIO2) |
| SCK | D5 | (GPIO14) |
| MISO | D6 | (GPIO12) |
| MOSI | D7 | (GPIO13) |