實驗 ESP32 AutoConnect WIFI
#include <WiFiManager.h> // https://github.com/tzapu/WiFiManager
/*
ESP32 MQTT
*/
#include <WiFi.h>
#include <PubSubClient.h>
#include <SPI.h>
#include <MFRC522.h>
#include <WiFiManager.h> // https://github.com/tzapu/WiFiManager
#define BUILTIN_LED 2
/* Wiring RFID RC522 module
=============================================================================
GND = GND 3.3V = 3.3V
The following table shows the typical pin layout used:
* MFRC522 ESP32 Arduino Arduino Arduino Arduino Arduino
* Reader/PCD Uno/101 Mega Nano v3 Leonardo/Micro Pro Micro
* Signal Pin Pin Pin Pin Pin Pin Pin
* -----------------------------------------------------------------------------------------
* RST/Reset RST GPIO27 9 5 D9 RESET/ICSP-5 RST
* SPI SS SDA(SS) GPIO5 10 53 D10 10 10
* SPI MOSI MOSI GPIO23 11 / ICSP-4 51 D11 ICSP-4 16
* SPI MISO MISO GPIO19 12 / ICSP-1 50 D12 ICSP-1 14
* SPI SCK SCK GPIO18 13 / ICSP-3 52 D13 ICSP-3 15
*
[1] (1, 2) Configurable, typically defined as RST_PIN in sketch/program.
[2] (1, 2) Configurable, typically defined as SS_PIN in sketch/program.
[3] The SDA pin might be labeled SS on some/older MFRC522 boards
=============================================================================
*/
#define SS_PIN 5 // ESP32 pin GIOP5
#define RST_PIN 27 // ESP32 pin GIOP27
// Update these with values suitable for your network.
//const char *ssid = "PTS-2F";
//const char *pass = "";
const char *ssid = "TOTOLINK_A3002MU";
const char *pass = "24063173";
//const char *ssid = "74170287";
//const char *pass = "24063173";
//const char *ssid = "yourSSID"; // change according to your Network - cannot be longer than 32 characters!
//const char *pass = "yourPASSWORD"; // change according to your Network
#define MQTTid "" //id of this mqtt client
#define MQTTip "broker.mqtt-dashboard.com" //ip address or hostname of the mqtt broker
#define MQTTport 1883 //port of the mqtt broker
#define MQTTuser "alex9ufo" //username of this mqtt client
#define MQTTpsw "alex1234" //password of this mqtt client
//#define MQTTuser "your_username" //username of this mqtt client
//#define MQTTpsw "your_password" //password of this mqtt client
#define MQTTpubQos 2 //qos of publish (see README)
#define MQTTsubQos 1 //qos of subscribe
MFRC522 rfid(SS_PIN, RST_PIN); // Create MFRC522 instance
//Variables
long lastMsg = 0;
char jsonChar[100];
String IDNo_buf="";
//=============================================================================
boolean pendingDisconnect = false;
void mqttConnectedCb(); // on connect callback
void mqttDisconnectedCb(); // on disconnect callback
void mqttDataCb(char* topic, byte* payload, unsigned int length); // on new message callback
WiFiClient wclient;
PubSubClient client(MQTTip, MQTTport, mqttDataCb, wclient);
//=============================================================================
String printHex(byte *buffer, byte bufferSize) {
String id = "";
for (byte i = 0; i < bufferSize; i++) {
id += buffer[i] < 0x10 ? "0" : "";
id += String(buffer[i], HEX);
}
return id;
}
//=============================================================================
void mqttConnectedCb() {
Serial.println("mqtt connected");
// Once connected, publish an announcement...
client.publish("alex9ufo/outTopic/RFID/json", jsonChar, MQTTpubQos); // true means retain
// ... and resubscribe
client.subscribe("alex9ufo/inTopic", MQTTsubQos);
}
//=============================================================================
void mqttDisconnectedCb() {
Serial.println("disconnected");
}
//=============================================================================
void mqttDataCb(char* topic, byte* payload, unsigned int length) {
/*
you can convert payload to a C string appending a null terminator to it;
this is possible when the message (including protocol overhead) doesn't
exceeds the MQTT_MAX_PACKET_SIZE defined in the library header.
you can consider safe to do so when the length of topic plus the length of
message doesn't exceeds 115 characters
*/
char* message = (char *) payload;
message[length] = 0;
Serial.print("Message arrived [");
Serial.print(topic);
Serial.print("] ");
Serial.println(message);
// Switch on the LED if an 1 was received as first character
if (message[0] == '0') {
digitalWrite(BUILTIN_LED, LOW); // Turn the LED on (Note that LOW is the voltage level
// but actually the LED is on; this is because
Serial.println("Received 0 , Send LOW TO BuildIn_LED");
}
if (message[0] == '1') {
digitalWrite(BUILTIN_LED, HIGH); // Turn the LED off (Note that HIGH is the voltage level
// but actually the LED is on; this is because
Serial.println("Received 1 , Send HIGH TO BuildIn_LED");
}
if (message[0] == '2') {
digitalWrite(BUILTIN_LED, HIGH); // Turn the LED off (Note that HIGH is the voltage level
// but actually the LED is on; this is because
Serial.println("Received 2 , Flashing BuildIn_LED ");
for (int i=0; i <=5; i++){
digitalWrite(BUILTIN_LED, HIGH); // Turn the LED off (Note that HIGH is the voltage level
delay(500);
digitalWrite(BUILTIN_LED, LOW); // Turn the LED on (Note that HIGH is the voltage level
delay(500);
} //for (int
digitalWrite(BUILTIN_LED, HIGH);
} //if (message[0] == '2')
}
//======================================================
/*
void setup_wifi() {
delay(10);
// We start by connecting to a WiFi network
Serial.println();
Serial.print("Connecting to ");
Serial.println(ssid);
WiFi.begin(ssid, pass);
while (WiFi.status() != WL_CONNECTED) {
delay(500);
Serial.print(".");
}
Serial.println("");
Serial.println("WiFi connected");
Serial.println("IP address: ");
Serial.println(WiFi.localIP());
}
*/
//======================================================
void setup() {
Serial.begin(115200);
// WiFiManager
// Local intialization. Once its business is done, there is no need to keep it around
WiFiManager wifiManager;
// Uncomment and run it once, if you want to erase all the stored information
//wifiManager.resetSettings();
// set custom ip for portal
//wifiManager.setAPConfig(IPAddress(10,0,1,1), IPAddress(10,0,1,1), IPAddress(255,255,255,0));
// fetches ssid and pass from eeprom and tries to connect
// if it does not connect it starts an access point with the specified name
// here "AutoConnectAP"
// and goes into a blocking loop awaiting configuration
wifiManager.autoConnect("AutoConnectAP");
// or use this for auto generated name ESP + ChipID
//wifiManager.autoConnect();
// if you get here you have connected to the WiFi
Serial.println("Connected.");
///setup_wifi();
pinMode(BUILTIN_LED, OUTPUT);
Serial.println(F("Booting...."));
SPI.begin(); // Init SPI bus
rfid.PCD_Init(); // Init MFRC522
Serial.println(F("Ready!"));
Serial.println(F("======================================================"));
Serial.println("Tap an RFID/NFC tag on the RFID-RC522 reader");
}
//======================================================
void process_mqtt() {
if (WiFi.status() == WL_CONNECTED) {
if (client.connected()) {
client.loop();
} else {
// client id, client username, client password, last will topic, last will qos, last will retain, last will message
if (client.connect(MQTTid, MQTTuser, MQTTpsw, MQTTid "/status", 2, true, "0")) {
pendingDisconnect = false;
mqttConnectedCb();
}
}
} else {
if (client.connected())
client.disconnect();
}
if (!client.connected() && !pendingDisconnect) {
pendingDisconnect = true;
mqttDisconnectedCb();
}
}
//======================================================
void loop() {
process_mqtt();
if (rfid.PICC_IsNewCardPresent()) { // new tag is available
if (rfid.PICC_ReadCardSerial()) { // NUID has been readed
MFRC522::PICC_Type piccType = rfid.PICC_GetType(rfid.uid.sak);
Serial.print("RFID/NFC Tag Type: ");
Serial.println(rfid.PICC_GetTypeName(piccType));
// print UID in Serial Monitor in the hex format
Serial.print("UID:");
for (int i = 0; i < rfid.uid.size; i++) {
Serial.print(rfid.uid.uidByte[i] < 0x10 ? " 0" : " ");
Serial.print(rfid.uid.uidByte[i], HEX);
}
Serial.println();
String IDNo = printHex(rfid.uid.uidByte, rfid.uid.size);
IDNo_buf="";
IDNo_buf=IDNo;
// Convert data to JSON string
String json =
"{\"data\":{"
"\"RFID_No\": \"" + IDNo + "\"}"
"}";
// Convert JSON string to character array
json.toCharArray(jsonChar, json.length()+1);
if (client.connected()) {
Serial.print("Publish message: ");
Serial.println(json);
// Publish JSON character array to MQTT topic
client.publish("alex9ufo/outTopic/RFID/json",jsonChar);
}
rfid.PICC_HaltA(); // halt PICC
rfid.PCD_StopCrypto1(); // stop encryption on PCD
}
}
}
//======================================================
