Changed the bootup order: Connecting to WiFi first allows us to send the logs of the layout analyzer via syslog.

README.md

@@ -35,7 +35,9 @@ Valid keys are:
 ## Startup sequence
 
 During startup:
-* 1 green corner: FastLED is initialized. Layout is now being analyzed.
+* 1 green corner: FastLED is initialized.
-* 2 green corners: Layout is done. WiFi is being connected.
+* 2 green corners: WiFi is connecting...
-* 3 green corners: WiFi connection established. Connecting to MQTT server.
+* 3 green corners: Layout is analyzed...
+* 4 green corners: Connecting to MQTT server...
+* 5 green corners (only if OTA_DELAY is set): Waiting for an OTA connection...
 * Everything green (quarter of a second): Initialization done.

include/config.sample.h

@@ -24,6 +24,10 @@
 // Maximum color difference for the random effects.
 // This changes the hue value +/- this value. Use a maximum value of 127, otherwise strange things might happen.
 #define COLOR_DIFFERENCE 25
+// If this is enabled, the node layout will be visualized at startup.
+#define SHOW_LAYOUT_AT_BOOT
+// Wait this many seconds for OTA requests during startup.
+#define WAIT_FOR_OTA 5
 
 #define WIFI_SSID "..."
 #define WIFI_PASS "..."
@@ -39,4 +43,7 @@
 #define MQTT_TOPIC_STATE_LONG "espleaf/state_long"
 #define MQTT_TOPIC_COMMANDS "esplead/cmnd"
 
+#define SYSLOG_HOST "..."
+#define SYSLOG_PORT 514
+
 //#define TEST_MODE

include/syslog.h

@@ -0,0 +1,8 @@
+#pragma once
+
+#include <Arduino.h>
+#include <WiFiUdp.h>
+
+#ifdef SYSLOG_HOST
+	void syslog(String msg, uint8_t severity=7);
+#endif

include/tools.h

@@ -1,8 +1,15 @@
 #pragma once
 #include "my_fastled.h"
+#include "syslog.h"
 
-#define LOG(...) Serial.printf(__VA_ARGS__)
+//#define LOG(...) Serial.printf(__VA_ARGS__)
-#define LOGln(...) Serial.printf(__VA_ARGS__); Serial.println()
+//#define LOGln(...) Serial.printf(__VA_ARGS__); Serial.println()
+
+#ifdef SYSLOG_HOST
+	#define LOGln(...) { char buffer[512]; snprintf(buffer, 512, __VA_ARGS__); syslog(buffer); Serial.println(buffer);}
+#else
+	#define LOGln(...) Serial.printf(__VA_ARGS__); Serial.println()
+#endif
 
 
 void clear_leds();

src/corner.cpp

@@ -39,6 +39,7 @@ void Corner::infect(uint16_t infect_short_level, uint16_t infect_long_level) {
 }
 
 bool Corner::reached_level(uint16_t level) {
+	if (color_blend_state >= 1024) return false;
 	uint16_t old_cbs = color_blend_state >= effect_speed ? color_blend_state - effect_speed : 0;
 	return (old_cbs < level && color_blend_state >= level);
 }

src/main.cpp

@@ -10,6 +10,7 @@
 #include "prototypes.h"
 #include "mqtt.h"
 #include "state.h"
+#include "syslog.h"
 
 std::vector<Node*> nodes;
 std::list<Edge*> edges;
@@ -131,15 +132,31 @@ void show_all() {
 }
 
 void show_status(uint8_t status, CRGB color=CRGB::Green) {
-	for (int i=0; i<status; i++) {
+	for (int i=0; i<status*LEDS_PER_CORNER && i<LED_COUNT; i++) {
-		if (i<corners.size()) {
+		leds[i] = color;
-			corners[i]->set_color(color);
 	}
+	
+	for (int i=status*LEDS_PER_CORNER; i<LED_COUNT; i++) {
+		leds[i] = CRGB::Black;
 	}
-	for (int i=status; i<corners.size(); i++) {
+	FastLED.show();
-		corners[i]->set_color(CRGB::Black);
+}
+
+void display_layout() {
+	for(Corner* corner : corners) {
+		corner->set_color(CRGB::Blue);
+		for(Corner* c : corner->_short_neighbours) {
+			c->set_color(CRGB::Red);
+		}
+		for(Corner* c : corner->_long_neighbours) {
+			c->set_color(CRGB::Green);
 		}
 		show_all();
+		delay(1500);
+		for(Corner* c : corners) {
+			c->set_color(CRGB::Black);
+		}
+	}
 }
 
 void setup() {
@@ -150,16 +167,16 @@ void setup() {
 	setup_fastled();
 	show_status(1);
 
-	setup_layout();
-	show_status(2);
-
 	#ifdef TEST_MODE
 		LOGln("TEST_MODE is active!");
 	#else
+		show_status(2);
 		wifi_setup();
 
 		show_status(3);
+		setup_layout();
 
+		show_status(4);
 		mqtt_setup();
 		ArduinoOTA.setHostname(OTA_HOSTNAME);
 		ArduinoOTA.onProgress([&](unsigned int progress, unsigned int total){
@@ -169,10 +186,33 @@ void setup() {
 		ArduinoOTA.onEnd([](){ show_status(0); });
 		ArduinoOTA.begin();
 
+		#ifdef WAIT_FOR_OTA
+			show_status(5);
+			LOGln("Waiting %d seconds for OTA requests...", WAIT_FOR_OTA);
+			unsigned long ota_target_time = millis() + WAIT_FOR_OTA*1000;
+			while (millis() < ota_target_time) {
+				ArduinoOTA.handle();
+				yield();
+			}
+			LOGln("Done waiting for OTA requests.");
+		#endif
+
 		show_status(255);
 		delay(250);
 		show_status(0);
 	#endif
+
+	LOGln("Setup done.");
+
+	#ifdef SHOW_LAYOUT_AT_BOOT
+		LOGln("SHOW_LAYOUT_AT_BOOT is active - showing layout...");
+		display_layout();
+		LOGln("Showing layout is done.");
+	#endif
+
+	for(Corner* corner : corners) {
+		corner->set_color(CRGB::Black);
+	}
 }
 
 void loop() {

src/mqtt.cpp

@@ -5,15 +5,15 @@
 
 void connect() {
 LOGln("Connecting to MQTT broker...");
-    if (mqtt.connect(MQTT_CLIENT_ID, MQTT_USER, MQTT_PASS, MQTT_TOPIC "state", 0, true, "OFFLINE")) {
+    if (mqtt.connect(MQTT_CLIENT_ID, MQTT_USER, MQTT_PASS, MQTT_TOPIC "available", 0, true, "offline")) {
         LOGln("Connected.");
         mqtt.publish(MQTT_TOPIC "available", "online", true);
         char buffer[40];
         snprintf(buffer, 40, "online %s", wifi.localIP().toString().c_str());
         mqtt.publish(MQTT_TOPIC "available_long", buffer, true);
         mqtt.subscribe(MQTT_TOPIC"cmnd");
-        String discovery_msg = "{\""
+        String discovery_msg = "{"
-            "\"~\":\"" MQTT_TOPIC ",\"avty_t\":\"~available\",\"cmd_t\":\"~cmnd\",\"stat_t\":\"~state\","
+            "\"~\":\"" MQTT_TOPIC "\",\"avty_t\":\"~available\",\"cmd_t\":\"~cmnd\",\"stat_t\":\"~state\","
             "\"name\":\"ESPleaf\",\"schema\":\"json\","
             "\"brightness\":true,\"bri_scl\":255,"
             "\"effect\":true,\"effect_list\":[\"off\",\"corners\",\"nodes\",\"flash\",\"static\"],"
@@ -62,6 +62,7 @@ void mqtt_setup() {
     mqtt.setServer(MQTT_SERVER, MQTT_SERVER_PORT);
     mqtt.setCallback(callback);
     mqtt.setSocketTimeout(1);
+    mqtt.setBufferSize(400);
     connect();
 }
 

src/syslog.cpp

@@ -0,0 +1,21 @@
+#include "syslog.h"
+#include "config.h"
+
+#ifdef SYSLOG_HOST
+	static uint16_t syslog_msg_id = 1;
+
+	void syslog(String msg, uint8_t severity) {
+		uint8_t facility = 16; // local0
+		if (severity > 7) severity = 7;
+		WiFiUDP udp;
+
+		udp.beginPacket(SYSLOG_HOST, SYSLOG_PORT);
+		udp.write("<");
+		udp.write(String(facility * 8 + severity).c_str());
+		udp.write(">1 - " OTA_HOSTNAME " core 1 ");
+		udp.write(String(syslog_msg_id++).c_str());
+		udp.write(" - ");
+		udp.write(msg.c_str());
+		udp.endPacket();
+	}
+#endif

src/wifi.cpp

@@ -2,13 +2,14 @@
 #include "tools.h"
 
 void wifi_setup() {
-    LOG("Connecting to WiFi %s...", WIFI_SSID);
+    Serial.printf("Connecting to WiFi %s...", WIFI_SSID);
     WiFi.mode(WIFI_STA);
     WiFi.begin(WIFI_SSID, WIFI_PASS);
     while (WiFi.status() != WL_CONNECTED) {
-        LOG(".");
+        Serial.print(".");
         delay(300);
     }
-    LOGln(" Connected as %s", WiFi.localIP().toString().c_str());
+    Serial.println();
+    LOGln("Connected as %s", WiFi.localIP().toString().c_str());
     random16_add_entropy(micros());
 }