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updated board

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scheianu
2026-03-15 08:47:06 +02:00
parent b1ee2610ca
commit 22227b7e21
3 changed files with 1084 additions and 108 deletions
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esp32_arduino/esp32_arduino.ino
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@@ -8,11 +8,37 @@
*
* Provides REST API for Home Assistant integration
*/
// version 1.5 Initial release
// version 1.8 Initial release
#include <WiFi.h>
#include <WebServer.h>
#include <WiFiClient.h>
// ── NFC: PN532 over UART (HSU mode) via UEXT1 ───────────────────────────────
// UEXT1 pin 3 = TXD (ESP32 → PN532 RXD) → GPIO4
// UEXT1 pin 4 = RXD (PN532 TXD → ESP32) → GPIO5
// PN532 module wiring note: set HSU mode — DIP1 = 0, DIP2 = 0
#include <PN532_HSU.h>
#include <PN532.h>
#define NFC_TX_PIN 4 // UEXT1 pin 3 — ESP32 transmits to PN532
#define NFC_RX_PIN 5 // UEXT1 pin 4 — ESP32 receives from PN532
#define NFC_POLL_MS 500 // idle detection interval (ms)
HardwareSerial nfcSerial(1); // UART1
PN532_HSU pn532hsu(nfcSerial);
PN532 nfc(pn532hsu);
bool nfc_initialized = false;
String nfc_last_uid = "";
unsigned long nfc_last_poll_ms = 0;
int nfc_miss_count = 0; // consecutive polls with no card detected
// NFC Access Control
char nfc_auth_uid[32] = ""; // authorized card UID; empty = any card triggers
int nfc_relay_num = 1; // relay to open on match (1-4)
unsigned long nfc_pulse_ms = 5000; // absence timeout: relay closes after this many ms of no card
char nfc_access_state[8] = "idle"; // "idle" | "granted" | "denied"
// ────────────────────────────────────────────────────────────────────────────
// WiFi credentials
const char* ssid = "BUON GUSTO PARTER";
const char* password = "arleta13";
@@ -56,6 +82,7 @@ bool ha_registered = false;
// Temperature simulation
float temperature = 25.0;
unsigned long last_temp_update = 0;
void setup() {
// Initialize USB CDC serial
@@ -94,66 +121,50 @@ void setup() {
Serial.println("GPIO initialized");
// Configure WiFi
// ESP32-C6 note: the radio sometimes needs a full reset cycle before it can
// associate. We do WiFi.disconnect(true) → mode() → config() → begin() and
// allow up to 3 full connection attempts (60 s total) before giving up.
Serial.println("\n--- WiFi Configuration ---");
WiFi.disconnect(true); // reset radio & erase any stale state
delay(200);
WiFi.mode(WIFI_STA);
WiFi.setAutoReconnect(true);
// Set static IP (prevents DHCP IP changes)
// Static IP
IPAddress staticIP(192, 168, 0, 181);
IPAddress gateway(192, 168, 0, 1);
IPAddress subnet(255, 255, 255, 0);
WiFi.config(staticIP, gateway, subnet);
// Connect to WiFi
Serial.print("Connecting to WiFi: ");
Serial.println(ssid);
WiFi.begin(ssid, password);
int attempts = 0;
while (WiFi.status() != WL_CONNECTED && attempts < 40) { // 40 * 500ms = 20 seconds
delay(500);
Serial.print(".");
attempts++;
}
Serial.println(""); // New line after dots
// Check WiFi status
int wifiStatus = WiFi.status();
if (wifiStatus == WL_CONNECTED) {
Serial.println("\n✓ WiFi connected!");
Serial.print("IP address: ");
Serial.println(WiFi.localIP());
Serial.print("RSSI: ");
Serial.print(WiFi.RSSI());
Serial.println(" dBm");
Serial.print("MAC: ");
Serial.println(WiFi.macAddress());
} else {
Serial.println("\n✗ WiFi connection failed!");
Serial.print("WiFi Status Code: ");
Serial.println(wifiStatus);
// Status codes: 0=IDLE, 1=NO_SSID, 2=SCAN_COMPLETE, 3=CONNECTED, 4=CONNECT_FAILED, 5=CONNECTION_LOST, 6=DISCONNECTED
switch(wifiStatus) {
case WL_NO_SSID_AVAIL:
Serial.println("ERROR: SSID not found! Check network name.");
break;
case WL_CONNECT_FAILED:
Serial.println("ERROR: Connection failed! Check password.");
break;
case WL_CONNECTION_LOST:
Serial.println("ERROR: Connection lost.");
break;
case WL_DISCONNECTED:
Serial.println("ERROR: Disconnected from network.");
break;
default:
Serial.println("ERROR: Unknown WiFi error.");
bool wifi_ok = false;
for (int pass = 1; pass <= 3 && !wifi_ok; pass++) {
Serial.printf("Connecting to WiFi: %s (attempt %d/3)\n", ssid, pass);
WiFi.begin(ssid, password);
for (int t = 0; t < 40 && WiFi.status() != WL_CONNECTED; t++) {
delay(500);
Serial.print(".");
}
Serial.println("Continuing anyway to allow API access...");
// Scan and show available networks
scanWiFiNetworks();
Serial.println();
if (WiFi.status() == WL_CONNECTED) wifi_ok = true;
else if (pass < 3) {
Serial.println(" Not connected yet, retrying...");
WiFi.disconnect(true);
delay(1000);
WiFi.mode(WIFI_STA);
WiFi.config(staticIP, gateway, subnet);
}
}
if (wifi_ok) {
Serial.println("\n\u2713 WiFi connected!");
Serial.print(" IP : "); Serial.println(WiFi.localIP());
Serial.print(" RSSI : "); Serial.print(WiFi.RSSI()); Serial.println(" dBm");
Serial.print(" MAC : "); Serial.println(WiFi.macAddress());
} else {
Serial.println("\n\u2717 WiFi connection failed after 3 attempts.");
Serial.print(" Status code: "); Serial.println(WiFi.status());
Serial.println(" Check: correct SSID/password, 2.4 GHz band, board in range.");
Serial.println(" HTTP server will start anyway \u2014 accessible once WiFi reconnects.");
}
// Setup API endpoints
@@ -171,6 +182,10 @@ void setup() {
server.on("/led/on", HTTP_POST, handleLEDOn);
server.on("/led/off", HTTP_POST, handleLEDOff);
server.onNotFound(handleNotFound);
server.on("/nfc/status", HTTP_GET, handleNFCStatus);
server.on("/nfc/config", HTTP_GET, handleNFCConfigGet);
server.on("/nfc/config", HTTP_POST, handleNFCConfigSet);
server.on("/debug", HTTP_GET, handleDebug);
// Start server
server.begin();
@@ -181,20 +196,174 @@ void setup() {
Serial.print(WiFi.localIP());
Serial.println("/api/status");
Serial.println("=================================\n");
// ── NFC (PN532 HSU) initialisation — multi-baud auto-detect ─────────────
// The PN532 default HSU baud is 115200, but some modules ship at 9600.
// We try both, plus RX/TX swapped, so the board will find the module
// regardless of those two variables.
Serial.println("--- NFC (PN532 HSU) Initialization ---");
// Baud rates to try, in order
const long NFC_BAUDS[] = {115200, 9600, 57600, 38400};
const int NFC_NBAUDS = 4;
// Pin pairs to try: {RX, TX}. Second pair = swapped.
const int NFC_PINS[2][2] = {{NFC_RX_PIN, NFC_TX_PIN},
{NFC_TX_PIN, NFC_RX_PIN}};
uint32_t versiondata = 0;
long found_baud = 0;
int found_rx = NFC_RX_PIN;
int found_tx = NFC_TX_PIN;
for (int pi = 0; pi < 2 && !versiondata; pi++) {
int rx = NFC_PINS[pi][0];
int tx = NFC_PINS[pi][1];
for (int bi = 0; bi < NFC_NBAUDS && !versiondata; bi++) {
long baud = NFC_BAUDS[bi];
Serial.printf(" Trying baud=%-7ld RX=GPIO%d TX=GPIO%d ...\n", baud, rx, tx);
nfcSerial.begin(baud, SERIAL_8N1, rx, tx);
delay(500); // PN532 boot / line-settle time
nfc.begin(); // PN532_HSU::begin() is a no-op — pins already set
versiondata = nfc.getFirmwareVersion();
if (!versiondata) delay(200);
else { found_baud = baud; found_rx = rx; found_tx = tx; }
}
}
if (!versiondata) {
Serial.println("\u2717 PN532 not detected with any baud/pin combination.");
Serial.println(" Hardware checklist:");
Serial.println(" 1. DIP/solder-jumpers on PN532 board: BOTH = 0 (HSU mode)");
Serial.println(" Some boards label them SEL0/SEL1 or I0/I1 — both must be LOW.");
Serial.println(" 2. Power: UEXT1 pin 1 = 3V3, pin 2 = GND. Measure with multimeter.");
Serial.println(" 3. Wiring: UEXT1 pin 3 (GPIO4) ↔ PN532 RXD");
Serial.println(" UEXT1 pin 4 (GPIO5) ↔ PN532 TXD");
Serial.println(" 4. Some PN532 breakouts need a 100 ohm series resistor on TX line.");
} else {
Serial.printf("\u2713 PN532 found! baud=%ld RX=GPIO%d TX=GPIO%d\n",
found_baud, found_rx, found_tx);
Serial.print(" Chip: PN5");
Serial.println((versiondata >> 24) & 0xFF, HEX);
Serial.printf(" Firmware: %d.%d\n",
(versiondata >> 16) & 0xFF, (versiondata >> 8) & 0xFF);
// Re-init serial with confirmed settings
nfcSerial.begin(found_baud, SERIAL_8N1, found_rx, found_tx);
nfc.SAMConfig();
nfc_initialized = true;
Serial.println("\u2713 NFC ready \u2014 waiting for ISO14443A / Mifare cards");
}
// ──────────────────────────────────────────────────────────────────────────
}
void loop() {
server.handleClient();
// Simulate temperature reading
temperature = 25.0 + (random(-20, 20) / 10.0);
// Simulate temperature reading — update every 5 s
if (millis() - last_temp_update >= 5000) {
last_temp_update = millis();
temperature = 25.0 + (random(-20, 20) / 10.0);
}
// Check for input state changes every 50ms
if (millis() - last_input_check > 50) {
last_input_check = millis();
checkInputChanges();
}
// ── NFC: two-phase polling ────────────────────────────────────────────────
// IDLE : fast poll every NFC_POLL_MS (500 ms), 50 ms RF timeout
// GRANTED/DENIED: slow presence-check every nfc_pulse_ms, 500 ms RF timeout
// 2 consecutive misses required to confirm card is gone
{
bool is_active_state = (strcmp(nfc_access_state, "granted") == 0 ||
strcmp(nfc_access_state, "denied") == 0);
unsigned long nfc_interval = is_active_state ? nfc_pulse_ms : (unsigned long)NFC_POLL_MS;
if (nfc_initialized && millis() - nfc_last_poll_ms >= nfc_interval) {
nfc_last_poll_ms = millis();
uint16_t rf_timeout = is_active_state ? 500 : 50;
uint8_t uid[7] = {0};
uint8_t uidLen = 0;
bool found = nfc.readPassiveTargetID(PN532_MIFARE_ISO14443A, uid, &uidLen, rf_timeout);
if (found && uidLen > 0) {
nfc.inRelease(1); // deselect → card returns to ISO14443A IDLE state for next poll
nfc_miss_count = 0;
String uid_str = "";
for (uint8_t i = 0; i < uidLen; i++) {
if (uid[i] < 0x10) uid_str += "0";
uid_str += String(uid[i], HEX);
if (i < uidLen - 1) uid_str += ":";
}
uid_str.toUpperCase();
if (strcmp(nfc_access_state, "granted") == 0) {
// Presence check passed — card still on reader
Serial.printf("NFC: card present UID=%s\n", uid_str.c_str());
} else if (strcmp(nfc_access_state, "denied") == 0 && uid_str == nfc_last_uid) {
// Same card that was already denied is still on reader — do nothing
Serial.printf("NFC: denied card still present UID=%s\n", uid_str.c_str());
} else {
// New card — authenticate
nfc_last_uid = uid_str;
Serial.printf("NFC: card UID=%s\n", uid_str.c_str());
postNFCEvent(uid_str);
// Require an explicit authorized UID — empty = no card is authorized yet
if (strlen(nfc_auth_uid) == 0) {
strcpy(nfc_access_state, "denied");
Serial.printf("NFC: ACCESS DENIED — no authorized UID configured. Set one in the web UI.\n");
} else if (uid_str == String(nfc_auth_uid)) {
strcpy(nfc_access_state, "granted");
int gpin = nfcRelayPin(nfc_relay_num);
if (gpin >= 0) {
digitalWrite(gpin, HIGH);
switch (nfc_relay_num) {
case 1: relay1_state = true; break;
case 2: relay2_state = true; break;
case 3: relay3_state = true; break;
case 4: relay4_state = true; break;
}
}
Serial.printf("NFC: ACCESS GRANTED relay=%d (presence-check every %lums)\n",
nfc_relay_num, nfc_pulse_ms);
} else {
strcpy(nfc_access_state, "denied");
Serial.printf("NFC: ACCESS DENIED UID=%s\n", uid_str.c_str());
}
}
} else {
// No card this poll
if (strcmp(nfc_access_state, "granted") == 0) {
nfc_miss_count++;
if (nfc_miss_count >= 2) { // 2 consecutive presence-check failures = card gone
nfc_miss_count = 0;
int pin = nfcRelayPin(nfc_relay_num);
if (pin >= 0) {
digitalWrite(pin, LOW);
switch (nfc_relay_num) {
case 1: relay1_state = false; break;
case 2: relay2_state = false; break;
case 3: relay3_state = false; break;
case 4: relay4_state = false; break;
}
}
strcpy(nfc_access_state, "idle");
nfc_last_uid = "";
Serial.printf("NFC: card removed — relay %d closed\n", nfc_relay_num);
} else {
Serial.printf("NFC: presence miss %d/2 — retrying\n", nfc_miss_count);
}
} else if (strcmp(nfc_access_state, "denied") == 0) {
nfc_miss_count++;
if (nfc_miss_count >= 2) {
Serial.printf("NFC: denied card removed\n");
strcpy(nfc_access_state, "idle");
nfc_last_uid = "";
nfc_miss_count = 0;
}
}
// idle: keep fast-polling, no action needed
}
}
}
delay(10);
}
@@ -235,7 +404,7 @@ void handleRoot() {
input3_state = digitalRead(DIN3_PIN);
input4_state = digitalRead(DIN4_PIN);
String html = "<html><head><title>ESP32-C6 Device</title>";
String html = "<html><head><meta charset='UTF-8'><title>ESP32-C6 Device</title>";
html += "<meta name='viewport' content='width=device-width, initial-scale=1'>";
html += "<style>";
html += "body{font-family:Arial;margin:20px;background:#f0f0f0}";
@@ -262,6 +431,10 @@ void handleRoot() {
html += ".btn-on{background:#4CAF50;color:white}.btn-off{background:#f44336;color:white}";
html += ".wh-ok{background:#c8e6c9;color:#1b5e20;padding:10px;border-radius:4px}";
html += ".wh-err{background:#ffcdd2;color:#b71c1c;padding:10px;border-radius:4px}";
html += ".nfc-state{padding:10px 14px;border-radius:6px;font-weight:bold;font-size:15px;margin-top:4px}";
html += ".nfc-idle{background:#f5f5f5;color:#757575}";
html += ".nfc-granted{background:#c8e6c9;color:#1b5e20}";
html += ".nfc-denied{background:#ffcdd2;color:#b71c1c}";
html += "</style>";
html += "<script>";
// Relay toggle: read current state from data-state attribute, POST, update DOM
@@ -287,8 +460,47 @@ void handleRoot() {
html += "b.className='relay-btn '+(on?'relay-on':'relay-off');";
html += "b.textContent='Relay '+i+': '+(on?'ON':'OFF');";
html += "}";
// Update NFC section from polled status
html += "var nled=document.getElementById('nfc-led');";
html += "if(nled)nled.className='led '+(d.nfc_card_present?'led-on':'led-off');";
html += "var nuid=document.getElementById('nfc-uid');";
html += "if(nuid)nuid.textContent=d.nfc_last_uid||'No card inserted';";
html += "var ncb=document.getElementById('nfc-copy-btn');";
html += "if(ncb)ncb.disabled=!d.nfc_card_present;";
html += "var nac=document.getElementById('nfc-access');";
html += "if(nac){var as=d.nfc_access_state||'idle';";
html += "nac.className='nfc-state nfc-'+as;";
html += "nac.textContent=as==='granted'?'ACCESS GRANTED':as==='denied'?'ACCESS DENIED':'Waiting for card';}";
html += "var ef=document.getElementById('nfc-auth-field');";
html += "if(ef&&document.activeElement!==ef)ef.value=d.nfc_auth_uid||'';";
html += "var ad=document.getElementById('nfc-auth-display');";
html += "if(ad){if(d.nfc_auth_uid){ad.style.color='#1b5e20';ad.textContent=d.nfc_auth_uid;}";
html += "else{ad.style.color='#b71c1c';ad.textContent='None \u2014 no card authorized yet';}}";
html += "var rs=document.getElementById('nfc-relay-sel');";
html += "if(rs&&document.activeElement!==rs)rs.value=d.nfc_relay_num||1;";
html += "var pf=document.getElementById('nfc-pulse-field');";
html += "if(pf&&document.activeElement!==pf)pf.value=d.nfc_pulse_ms||3000;";
html += "}).catch(function(e){console.error(e);});}";
html += "window.addEventListener('load',function(){updateStatus();setInterval(updateStatus,2000);});";
html += "function clearNFCAuth(){";
html += "if(!confirm('Remove the authorized card?'))return;";
html += "fetch('/nfc/config?auth_uid=&relay='+document.getElementById('nfc-relay-sel').value+'&pulse_ms='+document.getElementById('nfc-pulse-field').value,{method:'POST'})";
html += ".then(function(r){return r.json();})";
html += ".then(function(d){if(d.status==='ok'){alert('Authorized card cleared.');}else{alert('Error: '+d.error);}})";
html += ".catch(function(e){alert('Network error');});}";
html += "function saveNFCConfig(){";
html += "var uid=document.getElementById('nfc-auth-field').value.trim().toUpperCase();";
html += "var relay=document.getElementById('nfc-relay-sel').value;";
html += "var pulse=document.getElementById('nfc-pulse-field').value;";
html += "fetch('/nfc/config?auth_uid='+encodeURIComponent(uid)+'&relay='+relay+'&pulse_ms='+pulse,{method:'POST'})";
html += ".then(function(r){return r.json();})";
html += ".then(function(d){if(d.status==='ok'){alert('Saved!\\nAuthorized UID: '+(d.auth_uid||'(none)')+'\\nRelay: '+d.relay_num+'\\nAbsent timeout: '+d.pulse_ms+'ms');}else{alert('Error: '+d.error);}})";
html += ".catch(function(e){alert('Network error');console.error(e);});}";
html += "function copyUID(){";
html += "var u=document.getElementById('nfc-uid').textContent;";
html += "if(u&&u!=='No card inserted'){var f=document.getElementById('nfc-auth-field');f.value=u;";
html += "var b=document.getElementById('nfc-copy-btn');b.textContent='\u2713 Copied!';";
html += "setTimeout(function(){b.textContent='\u2193 Use as authorized';},1500);}}";
html += "window.addEventListener('load',function(){updateStatus();setInterval(updateStatus,2000);});";
html += "</script>";
html += "</head><body>";
html += "<h1>ESP32-C6 Control Panel</h1>";
@@ -336,6 +548,74 @@ void handleRoot() {
html += "<button class='btn btn-off' onclick='fetch(\"/led/off\",{method:\"POST\"}).then(()=>location.reload())'>LED OFF</button>";
html += " &nbsp; Status: <strong>" + String(led_state ? "ON" : "OFF") + "</strong></div>";
// ── NFC Access Control card ───────────────────────────────────────────────
bool nfc_present_now = nfc_initialized && (strcmp(nfc_access_state, "granted") == 0);
String ac_class = String(nfc_access_state) == "granted" ? "nfc-granted" :
String(nfc_access_state) == "denied" ? "nfc-denied" : "nfc-idle";
String ac_text = String(nfc_access_state) == "granted" ? "ACCESS GRANTED" :
String(nfc_access_state) == "denied" ? "ACCESS DENIED" : "Waiting for card";
html += "<div class='card'><h2>NFC Access Control (PN532 &mdash; UEXT1)</h2>";
// ── Live status row ────────────────────────────────────────────────────
html += "<div style='display:flex;align-items:center;gap:14px;margin-bottom:12px'>";
html += "<div class='led " + String(nfc_present_now ? "led-on" : "led-off") + "' id='nfc-led'></div>";
html += "<div style='flex:1'>";
html += "<div style='font-size:11px;color:#888;margin-bottom:4px'>Detected card UID</div>";
html += "<div id='nfc-uid' style='font-size:20px;font-weight:bold;font-family:monospace;letter-spacing:2px'>";
html += (nfc_last_uid.length() > 0 ? nfc_last_uid : "No card inserted");
html += "</div></div>";
html += "<button id='nfc-copy-btn' class='btn' onclick='copyUID()' style='white-space:nowrap'" + String(nfc_present_now ? "" : " disabled") + ">&#8595; Use as authorized</button>";
html += "</div>";
html += "<div id='nfc-access' class='nfc-state " + ac_class + "'>" + ac_text + "</div>";
// ── Current Settings (read-only) ───────────────────────────────────────
html += "<h3 style='font-size:14px;color:#555;margin:18px 0 8px'>Current Settings</h3>";
html += "<table style='width:100%;border-collapse:collapse;font-size:13px'>";
// Authorized card row
html += "<tr style='border-bottom:1px solid #eee'>";
html += "<td style='padding:8px 6px;color:#666;width:160px'>Authorized card</td>";
if (strlen(nfc_auth_uid) > 0) {
html += "<td style='padding:8px 6px;font-family:monospace;font-weight:bold;color:#1b5e20' id='nfc-auth-display'>" + String(nfc_auth_uid) + "</td>";
html += "<td style='padding:8px 6px;text-align:right'><button class='btn btn-off' style='font-size:12px;padding:4px 10px' onclick='clearNFCAuth()'>&#10005; Remove</button></td>";
} else {
html += "<td colspan='2' style='padding:8px 6px;color:#b71c1c' id='nfc-auth-display'>None &mdash; no card authorized yet</td>";
}
html += "</tr>";
// Relay row
html += "<tr style='border-bottom:1px solid #eee'>";
html += "<td style='padding:8px 6px;color:#666'>Trigger relay</td>";
html += "<td colspan='2' style='padding:8px 6px;font-weight:bold'>Relay " + String(nfc_relay_num) + "</td>";
html += "</tr>";
// Timeout row
html += "<tr>";
html += "<td style='padding:8px 6px;color:#666'>Absent timeout</td>";
html += "<td colspan='2' style='padding:8px 6px;font-weight:bold'>" + String(nfc_pulse_ms) + " ms</td>";
html += "</tr>";
html += "</table>";
// ── Edit Settings form ─────────────────────────────────────────────────
html += "<h3 style='font-size:14px;color:#555;margin:18px 0 8px'>Edit Settings</h3>";
html += "<div style='display:grid;grid-template-columns:1fr 1fr 1fr auto;gap:8px;align-items:end'>";
html += "<div><div style='font-size:12px;color:#666;margin-bottom:4px'>Authorized UID</div>";
html += "<input id='nfc-auth-field' style='width:100%;padding:8px;border:1px solid #ccc;border-radius:4px;font-family:monospace;box-sizing:border-box' placeholder='e.g. 04:AB:CD:EF' value='" + String(nfc_auth_uid) + "'></div>";
html += "<div><div style='font-size:12px;color:#666;margin-bottom:4px'>Trigger relay</div>";
html += "<select id='nfc-relay-sel' style='width:100%;padding:8px;border:1px solid #ccc;border-radius:4px'>";
for (int r = 1; r <= 4; r++) {
html += "<option value='" + String(r) + "'" + String(nfc_relay_num == r ? " selected" : "") + ">Relay " + String(r) + "</option>";
}
html += "</select></div>";
html += "<div><div style='font-size:12px;color:#666;margin-bottom:4px'>Absent timeout (ms)</div>";
html += "<input id='nfc-pulse-field' type='number' min='100' max='60000' style='width:100%;padding:8px;border:1px solid #ccc;border-radius:4px;box-sizing:border-box' value='" + String(nfc_pulse_ms) + "'></div>";
html += "<button class='btn btn-on' onclick='saveNFCConfig()' style='padding:8px 18px'>Save</button>";
html += "</div>";
if (!nfc_initialized) {
html += "<p style='color:#b71c1c;font-size:13px;margin:8px 0 0'>&#10007; PN532 not detected &mdash; check UEXT1 wiring (TX=GPIO4, RX=GPIO5)</p>";
}
if (nfc_initialized && strlen(nfc_auth_uid) == 0) {
html += "<p style='color:#e65100;font-size:13px;margin:8px 0 0'>&#9888; No authorized UID saved &mdash; present a card, click &ldquo;Use as authorized&rdquo; then Save.</p>";
}
html += "</div>";
// Home Assistant Webhook Status
html += "<div class='card'><h2>Home Assistant Webhook</h2>";
if (ha_registered && strlen(ha_callback_url) > 0) {
@@ -348,7 +628,7 @@ void handleRoot() {
html += "<div class='card'><h2>API Endpoints</h2>";
html += "GET /api/status &nbsp; POST /relay/on?relay=1-4 &nbsp; POST /relay/off?relay=1-4<br>";
html += "GET /input/status?input=1-4 &nbsp; POST /led/on &nbsp; POST /led/off<br>";
html += "POST /register?callback_url=...</div>";
html += "GET /nfc/status &nbsp; GET /nfc/config &nbsp; POST /nfc/config?auth_uid=&amp;relay=&amp;pulse_ms= &nbsp; POST /register?callback_url=...</div>";
html += "</body></html>";
@@ -377,9 +657,17 @@ void handleStatus() {
json += "\"relay2\":" + String(relay2_state ? "true" : "false") + ",";
json += "\"relay3\":" + String(relay3_state ? "true" : "false") + ",";
json += "\"relay4\":" + String(relay4_state ? "true" : "false") + ",";
json += "\"led\":" + String(led_state ? "true" : "false");
json += "\"led\":" + String(led_state ? "true" : "false") + ",";
bool nfc_present = nfc_initialized && (strcmp(nfc_access_state, "granted") == 0);
json += "\"nfc_initialized\":" + String(nfc_initialized ? "true" : "false") + ",";
json += "\"nfc_card_present\":" + String(nfc_present ? "true" : "false") + ",";
json += "\"nfc_last_uid\":\"" + nfc_last_uid + "\",";
json += "\"nfc_access_state\":\"" + String(nfc_access_state) + "\",";
json += "\"nfc_auth_uid\":\"" + String(nfc_auth_uid) + "\",";
json += "\"nfc_relay_num\":" + String(nfc_relay_num) + ",";
json += "\"nfc_pulse_ms\":" + String(nfc_pulse_ms);
json += "}";
server.send(200, "application/json", json);
// Log status every 10 seconds
@@ -562,52 +850,39 @@ void checkInputChanges() {
}
}
void postInputEvent(int input_num, bool state) {
if (!ha_registered || strlen(ha_callback_url) == 0) {
return; // Not registered, skip
}
// Invert state because inputs use pull-up (HIGH=not pressed, LOW=pressed)
bool pressed = !state;
String event_type = pressed ? "input_on" : "input_off";
Serial.printf("Input %d event: %s (raw_state=%d) - POSTing to HA\n", input_num, event_type.c_str(), state);
// Parse callback URL (format: http://host:port/path)
// ============================================
// Shared HTTP POST helper — parses ha_callback_url and POSTs JSON.
// Uses a 3-second timeout so an unreachable HA server never blocks the loop.
// ============================================
bool postJsonToHA(const String& json) {
if (!ha_registered || strlen(ha_callback_url) == 0) return false;
String url_str = String(ha_callback_url);
// Extract host and path
int protocol_end = url_str.indexOf("://");
if (protocol_end < 0) return;
if (protocol_end < 0) return false;
int host_start = protocol_end + 3;
int port_separator = url_str.indexOf(":", host_start);
int port_sep = url_str.indexOf(":", host_start);
int path_start = url_str.indexOf("/", host_start);
if (path_start < 0) path_start = url_str.length();
if (port_separator < 0 || port_separator > path_start) port_separator = -1;
String host = url_str.substring(host_start, (port_separator >= 0) ? port_separator : path_start);
int port = 80; // Default HTTP port
if (port_separator >= 0) {
int colon_port_end = url_str.indexOf("/", port_separator);
if (colon_port_end < 0) colon_port_end = url_str.length();
String port_str = url_str.substring(port_separator + 1, colon_port_end);
port = port_str.toInt();
if (port_sep < 0 || port_sep > path_start) port_sep = -1;
String host = url_str.substring(host_start, (port_sep >= 0) ? port_sep : path_start);
int port = 80;
if (port_sep >= 0) {
int colon_end = url_str.indexOf("/", port_sep);
if (colon_end < 0) colon_end = url_str.length();
port = url_str.substring(port_sep + 1, colon_end).toInt();
}
String path = url_str.substring(path_start);
// Create JSON payload
String json = "{\"input\":" + String(input_num) + ",\"state\":" + (pressed ? "true" : "false") + "}";
// Connect to Home Assistant and POST
WiFiClient client;
client.setTimeout(3000); // 3-second connect/read timeout
if (!client.connect(host.c_str(), port)) {
Serial.printf("Failed to connect to %s:%d\n", host.c_str(), port);
return;
Serial.printf("HA POST: failed to connect to %s:%d\n", host.c_str(), port);
return false;
}
// Send HTTP POST request
client.println("POST " + path + " HTTP/1.1");
client.println("Host: " + host);
client.println("Content-Type: application/json");
@@ -615,16 +890,155 @@ void postInputEvent(int input_num, bool state) {
client.println("Connection: close");
client.println();
client.print(json);
// Wait for response
delay(100);
// Read response
while (client.available()) {
char c = client.read();
// Just discard the response for now
unsigned long deadline = millis() + 3000;
while (client.connected() && millis() < deadline) {
if (client.available()) client.read();
else delay(1);
}
client.stop();
Serial.printf("Input %d event posted successfully\n", input_num);
return true;
}
void postInputEvent(int input_num, bool state) {
if (!ha_registered || strlen(ha_callback_url) == 0) return;
bool pressed = !state;
Serial.printf("Input %d event: %s (raw_state=%d) - POSTing to HA\n",
input_num, pressed ? "input_on" : "input_off", state);
String json = "{\"input\":" + String(input_num) +
",\"state\":" + (pressed ? "true" : "false") + "}";
if (postJsonToHA(json))
Serial.printf("Input %d event posted successfully\n", input_num);
}
// ============================================
// NFC Status API
// ============================================
void handleNFCStatus() {
bool present = nfc_initialized && (strcmp(nfc_access_state, "granted") == 0);
String json = "{";
json += "\"initialized\":" + String(nfc_initialized ? "true" : "false") + ",";
json += "\"card_present\":" + String(present ? "true" : "false") + ",";
json += "\"last_uid\":\"" + nfc_last_uid + "\",";
json += "\"access_state\":\"" + String(nfc_access_state) + "\",";
json += "\"auth_uid\":\"" + String(nfc_auth_uid) + "\",";
json += "\"relay_num\":" + String(nfc_relay_num) + ",";
json += "\"pulse_ms\":" + String(nfc_pulse_ms);
json += "}";
server.send(200, "application/json", json);
}
// ============================================
// NFC Webhook — POST card event to Home Assistant
// ============================================
void postNFCEvent(const String& uid) {
if (!ha_registered || strlen(ha_callback_url) == 0) return;
Serial.printf("NFC: posting UID %s to HA\n", uid.c_str());
String json = "{\"type\":\"nfc_card\",\"uid\":\"" + uid +
"\",\"uptime\":" + String(millis() / 1000) + "}";
if (postJsonToHA(json))
Serial.printf("NFC: event posted for UID %s\n", uid.c_str());
}
// ============================================
// NFC Helper: resolve relay number to GPIO pin
// ============================================
int nfcRelayPin(int rnum) {
switch (rnum) {
case 1: return RELAY_1_PIN;
case 2: return RELAY_2_PIN;
case 3: return RELAY_3_PIN;
case 4: return RELAY_4_PIN;
default: return -1;
}
}
// ============================================
// NFC Config API GET /nfc/config
// POST /nfc/config
// ============================================
void handleNFCConfigGet() {
String json = "{";
json += "\"auth_uid\":\"" + String(nfc_auth_uid) + "\",";
json += "\"relay_num\":" + String(nfc_relay_num) + ",";
json += "\"pulse_ms\":" + String(nfc_pulse_ms);
json += "}";
server.send(200, "application/json", json);
}
void handleNFCConfigSet() {
if (server.hasArg("auth_uid")) {
String u = server.arg("auth_uid");
u.trim();
u.toUpperCase();
if (u.length() < sizeof(nfc_auth_uid)) {
u.toCharArray(nfc_auth_uid, sizeof(nfc_auth_uid));
} else {
server.send(400, "application/json", "{\"error\":\"auth_uid too long (max 31 chars)\"}");
return;
}
}
if (server.hasArg("relay")) {
int r = server.arg("relay").toInt();
if (r >= 1 && r <= 4) {
nfc_relay_num = r;
} else {
server.send(400, "application/json", "{\"error\":\"relay must be 1-4\"}");
return;
}
}
if (server.hasArg("pulse_ms")) {
long p = server.arg("pulse_ms").toInt();
if (p >= 100 && p <= 60000) {
nfc_pulse_ms = (unsigned long)p;
} else {
server.send(400, "application/json", "{\"error\":\"pulse_ms range: 100-60000\"}");
return;
}
}
Serial.printf("NFC config: auth='%s' relay=%d pulse=%lu ms\n",
nfc_auth_uid, nfc_relay_num, nfc_pulse_ms);
String json = "{\"status\":\"ok\","
"\"auth_uid\":\"" + String(nfc_auth_uid) + "\","
"\"relay_num\":" + String(nfc_relay_num) + ","
"\"pulse_ms\":" + String(nfc_pulse_ms) + "}";
server.send(200, "application/json", json);
}
// ============================================
// Debug endpoint GET /debug
// Returns plain-text system info for diagnosing
// connectivity without needing a browser.
// ============================================
void handleDebug() {
String out = "=== ESP32-C6 Debug ===\n";
out += "Uptime: " + String(millis() / 1000) + " s\n";
out += "Free heap: " + String(ESP.getFreeHeap()) + " bytes\n";
out += "WiFi status: ";
switch (WiFi.status()) {
case WL_CONNECTED: out += "CONNECTED\n"; break;
case WL_NO_SSID_AVAIL: out += "NO SSID\n"; break;
case WL_CONNECT_FAILED: out += "FAILED\n"; break;
case WL_DISCONNECTED: out += "DISCONNECTED\n"; break;
default: out += String(WiFi.status()) + "\n";
}
out += "IP: " + WiFi.localIP().toString() + "\n";
out += "SSID: " + WiFi.SSID() + "\n";
out += "RSSI: " + String(WiFi.RSSI()) + " dBm\n";
out += "MAC: " + WiFi.macAddress() + "\n";
out += "\n";
out += "NFC init: " + String(nfc_initialized ? "YES" : "NO") + "\n";
out += "NFC last UID:" + String(nfc_last_uid.length() > 0 ? nfc_last_uid : "(none)") + "\n";
out += "NFC state: " + String(nfc_access_state) + "\n";
out += "NFC relay: " + String(nfc_relay_num) + "\n";
out += "NFC auth: " + String(strlen(nfc_auth_uid) > 0 ? nfc_auth_uid : "(any)") + "\n";
out += "\n";
out += "Relay states: R1=" + String(relay1_state) + " R2=" + String(relay2_state)
+ " R3=" + String(relay3_state) + " R4=" + String(relay4_state) + "\n";
server.send(200, "text/plain", out);
}