forgot the tiny pp :(

fahrplan/platformio.ini

@@ -21,3 +21,7 @@ lib_deps =
   fastled/FastLED
   https://github.com/mrfaptastic/ESP32-HUB75-MatrixPanel-I2S-DMA.git
   bitbank2/AnimatedGIF
+  bblanchon/ArduinoJson
+
+build_flags =
+            -DS3_LCD_DIV_NUM=20

fahrplan/schedhelp.py

@@ -0,0 +1,40 @@
+#!/usr/bin/env python3
+
+import json
+import datetime
+import requests
+
+from http.server import ThreadingHTTPServer, BaseHTTPRequestHandler
+
+def run():
+    schedule = requests.get('https://api.events.ccc.de/congress/2025/schedule.json').json() # json.load(open('schedule.json', 'r'))
+    talks = []
+    for day in schedule['schedule']['conference']['days']:
+        for room in ['Zero', 'One', 'Fuse', 'Ground']: #day['rooms']:
+            talks += day['rooms'][room]
+
+
+    talks.sort(key=lambda talk: talk['date'])
+    now = datetime.datetime.now()
+
+    upcoming = []
+    for talk in talks:
+        if datetime.datetime.fromisoformat(talk['date']).timestamp() < now.timestamp():
+            continue
+        upcoming.append({'start': talk['start'], 'room': talk['room'], 'title': talk['title']})
+
+    return json.dumps(upcoming)
+
+
+class Handler(BaseHTTPRequestHandler):
+    def do_GET(self):
+        data = run().encode("utf-8")
+        self.send_response(200)
+        self.send_header("Content-Type", "text/plain; charset=utf-8")
+        self.send_header("Content-Length", str(len(data)))
+        self.end_headers()
+        self.wfile.write(data)
+
+if __name__ == '__main__':
+    server = ThreadingHTTPServer(("0.0.0.0", 8000), Handler)
+    server.serve_forever()

fahrplan/src/config.h

@@ -1,4 +1,3 @@
 // config.h
 
-#define WIFI_SSID PankiNet
+#define DISPLAY_DURATION 10000
-#define WIFI_PSK foo

fahrplan/src/main.cpp

@@ -1,4 +1,7 @@
 #include <Arduino.h>
+#include <ArduinoJson.h>
+#include <WiFi.h>
+#include <HTTPClient.h>
 #include "xtensa/core-macros.h"
 #include <ESP32-HUB75-MatrixPanel-I2S-DMA.h>
 
@@ -15,12 +18,22 @@
 
 MatrixPanel_I2S_DMA *matrix = nullptr;
 AnimatedGIF gif;
+WiFiClientSecure client;
+HTTPClient http;
+DynamicJsonDocument doc(32768);
+
+long lastrefresh = 0;
+bool firstRequest = true;
+
+int current_index = 0;
+long last_index_change = 0;
+
 
 void setup(){
   Serial.begin(BAUD_RATE);
-  //while (!Serial) {
+  // while (!Serial) {
   //   ; // wait for serial port to connect. Needed for native USB
-  //}
+  // }
   pinMode(ONBOARD_LED, OUTPUT);
 
   // redefine pins if required
@@ -42,6 +55,26 @@ void setup(){
   matrix->fillScreenRGB888(0, 0, 0);
 
   gif.begin(LITTLE_ENDIAN_PIXELS);
+
+  matrix->setCursor(0, 0);
+  char ssid[] = "YOUR_SSID";
+  char pw[] = "YOUR_PSK";
+  matrix->print(ssid);
+  //Serial.print("Connecting");
+  WiFi.begin(ssid, pw);
+  // WiFi.begin(ssid, NULL);
+  while (WiFi.status() != WL_CONNECTED) {
+      delay(500);
+      matrix->fillScreenRGB888(0, 0, 0);
+      matrix->setCursor(0, 0);
+      matrix->print(WiFi.status());
+      //Serial.print(".");
+  }
+  matrix->fillScreenRGB888(0, 0, 0);
+
+  client.setInsecure();
+  http.useHTTP10(true);
+  http.begin(client, "https://www.theresno.cloud/schedhelp");
 }
 
 void draw_title(const std::string& title, uint16_t color) {
@@ -60,10 +93,17 @@ void draw_title(const std::string& title, uint16_t color) {
           } else {
               x_pos += 6; // char width + 1px gap
           }
-      } else {
+      } else if (x_pos != 0) {
           x_pos += 2; // small space
       }
 
+      if (y_pos >= 16 && x_pos >= (63 - 6)) {
+          // ellipsis
+            matrix->drawPixel(x_pos, y_pos + 6, color);
+            matrix->drawPixel(x_pos + 2, y_pos + 6, color);
+            matrix->drawPixel(x_pos + 4, y_pos + 6, color);
+            break;
+      }
       if (x_pos > (63 - 5)) { // new line
           if (current != ' ') {
               matrix->drawChar(x_pos, y_pos, '-', color, matrix->color444(0,0,0), 1);
@@ -76,7 +116,7 @@ void draw_title(const std::string& title, uint16_t color) {
 
 void draw_time(const std::string &time) {
     int x_pos = 0;
-    int y_pos = 32 - 8;
+    int y_pos = 32 - 7;
 
     for (size_t idx = 0; idx < time.size(); idx++) {
         char current = time[idx];
@@ -87,12 +127,12 @@ void draw_time(const std::string &time) {
                 break;
         }
         if (current == ':') {
-            matrix->drawPixel(x_pos, y_pos + 2, matrix->color444(1,1,1));
+            matrix->drawPixel(x_pos, y_pos + 2, matrix->color565(255,255,255));
-            matrix->drawPixel(x_pos, y_pos + 4, matrix->color444(1,1,1));
+            matrix->drawPixel(x_pos, y_pos + 4, matrix->color565(255,255,255));
             x_pos = x_pos + 2;
         } else {
             x_pos = x_pos - offset;
-            matrix->drawChar(x_pos, y_pos, current, matrix->color444(1,1,1), matrix->color444(0,0,0), 1);
+            matrix->drawChar(x_pos, y_pos, current, matrix->color565(255,255,255), matrix->color444(0,0,0), 1);
             x_pos = x_pos + (6 - offset);
         }
     }
@@ -100,7 +140,7 @@ void draw_time(const std::string &time) {
 
 void draw_location(const std::string &location) {
     int pixel_size = (location.size() * 6) - 1;
-    matrix->setCursor(63 - pixel_size, 32 - 8);
+    matrix->setCursor(63 - pixel_size, 32 - 7);
     matrix->print(location.c_str());
 }
 
@@ -125,7 +165,7 @@ void GIFDraw(GIFDRAW *pDraw) {
   // Apply the new pixels to the main image
   if (pDraw->ucHasTransparency) // if transparency used
   {
-    Serial.println("Transparency!");
+    // Serial.println("Transparency!");
     uint8_t *pEnd, c, ucTransparent = pDraw->ucTransparent;
     int x, iCount;
     pEnd = s + pDraw->iWidth;
@@ -153,7 +193,7 @@ void GIFDraw(GIFDRAW *pDraw) {
       {
         for (int xOffset = 0; xOffset < iCount; xOffset++)
         {
-          matrix->drawPixel(28 + x + xOffset, 25 + y, usTemp[xOffset]);
+          matrix->drawPixel(28 + x + xOffset, 27 + y, usTemp[xOffset]);
         }
         x += iCount;
         iCount = 0;
@@ -181,23 +221,49 @@ void GIFDraw(GIFDRAW *pDraw) {
     // Translate the 8-bit pixels through the RGB565 palette (already byte reversed)
     for (x = 0; x < pDraw->iWidth; x++)
     {
-      matrix->drawPixel(28 + x, 25 + y, usPalette[*s++]);
+      matrix->drawPixel(28 + x, 27 + y, usPalette[*s++]);
     }
   }
 }
 
 void loop() {
-  std::string title = "THE ART OF TEXT RENDERING";
+    if(firstRequest || (millis() - lastrefresh > 120000)) {
-  std::string time = "11:00";
+        http.GET();
-  std::string loc = "GRND";
+
-  draw_title(title, matrix->color565(249, 176, 0));
+        DeserializationError error = deserializeJson(doc, http.getStream());
+        if (error) {
+            //Serial.print(F("deserializeJson() failed: "));
+            //Serial.println(error.f_str());
+            return;
+        }
+        lastrefresh = millis();
+        firstRequest = false;
+    }
+    const char *j_title = doc[current_index]["title"];
+    const char *j_time = doc[current_index]["start"];
+    const char *j_room = doc[current_index]["room"];
+
+    std::string title(j_title); //= "THE ART OF TEXT RE:NDERING";
+    std::string time(j_time); // = "11:00";
+    std::string loc(j_room); //= "GRND";
+    //draw_title(title, matrix->color565(249, 176, 0));
+    draw_title(title, matrix->color565(doc[current_index]["r"], doc[current_index]["g"], doc[current_index]["b"]));
     draw_time(time);
     draw_location(loc);
 
+
     if (gif.open((uint8_t *)reallytinypp, sizeof(reallytinypp), GIFDraw)) {
       while (gif.playFrame(true, NULL)) {
           ;
       }
       gif.close();
     }
+    if (millis() - last_index_change > DISPLAY_DURATION ) {
+      current_index++;
+      if (current_index > 4) {
+          current_index = 0;
+      }
+      last_index_change = millis();
+      matrix->fillScreenRGB888(0, 0, 0);
+    }
 }

fahrplan/src/pp.h

@@ -0,0 +1,30 @@
+// Created with image_to_c
+// https://github.com/bitbank2/image_to_c
+//
+// reallytinypp
+// Data size = 251 bytes
+//
+// GIF, Compression=LZW, Size: 7 x 5, 3-Bpp
+// 4 frames
+//
+// for non-Arduino builds...
+#ifndef PROGMEM
+#define PROGMEM
+#endif
+const uint8_t reallytinypp[] PROGMEM = {
+	0x47,0x49,0x46,0x38,0x39,0x61,0x07,0x00,0x05,0x00,0xf2,0x00,0x00,0x00,0x00,0x00,
+	0x20,0x67,0x2c,0xee,0x00,0x00,0x06,0x94,0x20,0x1b,0x4c,0x85,0x1f,0x54,0x90,0xff,
+	0xff,0xff,0x00,0x00,0x00,0x21,0xff,0x0b,0x4e,0x45,0x54,0x53,0x43,0x41,0x50,0x45,
+	0x32,0x2e,0x30,0x03,0x01,0x00,0x00,0x00,0x21,0xfe,0x27,0x47,0x49,0x46,0x20,0x63,
+	0x72,0x6f,0x70,0x70,0x65,0x64,0x20,0x77,0x69,0x74,0x68,0x20,0x68,0x74,0x74,0x70,
+	0x73,0x3a,0x2f,0x2f,0x65,0x7a,0x67,0x69,0x66,0x2e,0x63,0x6f,0x6d,0x2f,0x63,0x72,
+	0x6f,0x70,0x00,0x21,0xf9,0x04,0x05,0x1e,0x00,0x07,0x00,0x2c,0x00,0x00,0x00,0x00,
+	0x07,0x00,0x05,0x00,0x00,0x03,0x0f,0x78,0x17,0xb3,0x1d,0x06,0x8c,0xc8,0x84,0xb5,
+	0x6c,0x68,0x4d,0x8a,0xff,0x09,0x00,0x21,0xf9,0x04,0x05,0x0a,0x00,0x00,0x00,0x2c,
+	0x00,0x00,0x00,0x00,0x07,0x00,0x05,0x00,0x00,0x02,0x07,0x84,0x7f,0x33,0xa0,0xe8,
+	0xff,0x0a,0x00,0x21,0xf9,0x04,0x05,0x1e,0x00,0x01,0x00,0x2c,0x00,0x00,0x00,0x00,
+	0x07,0x00,0x05,0x00,0x00,0x03,0x08,0x18,0xba,0x0b,0x16,0x8e,0xc9,0x39,0x13,0x00,
+	0x21,0xf9,0x04,0x05,0x46,0x00,0x01,0x00,0x2c,0x00,0x00,0x00,0x00,0x07,0x00,0x05,
+	0x00,0x00,0x03,0x08,0x18,0xba,0x6b,0x10,0x8e,0xc9,0x39,0x13,0x00,0x21,0xf9,0x04,
+	0x05,0x32,0x00,0x01,0x00,0x2c,0x00,0x00,0x00,0x00,0x07,0x00,0x05,0x00,0x00,0x03,
+	0x08,0x18,0xba,0x0b,0x16,0x8e,0xc9,0x39,0x13,0x00,0x3b};