.gitignore

 *.pyc
-.venv
\ No newline at end of file
+.venv
+build
\ No newline at end of file

Software/GeaVisionController/main/Kconfig.projbuild

@@ -23,5 +23,11 @@ menu "GeaVision"
         default "mqtt://192.168.2.100"
         help
             Url form the orbiter mqtt server
+    
+    config GEA_DISPLAY_CHARACTERS
+        int "Number of GV33 Display panels"
+        default 48
+        help
+            Number of GV33 Display panels
 
 endmenu
\ No newline at end of file

Software/GeaVisionController/main/main.cpp

@@ -62,24 +62,24 @@ static void log_error_if_nonzero(const char* message, int error_code) {
   }
 }
 
-char* bin2str(char* data, int& len) {
-  char* buffer = new char[len * 3 + 4]; // two chars plus space per byte
+char* bin2str(char* data, size_t& len) {
+  char* buffer = new char[len * 3 + 5]; // two chars plus space per byte
   std::fill(buffer, buffer + (len * 3), 0);
   uint cursor        = 0;
   std::string dbgmsg = "";
   cursor += sprintf(buffer + cursor, "RAW=");
-  std::for_each(data, data + len, [&cursor, &buffer](char c) { cursor += sprintf(buffer + cursor, " %hhx", c); });
+  std::for_each(data, data + len, [&cursor, &buffer](char c) { cursor += sprintf(buffer + cursor, " %02x", c); });
   return buffer;
 }
 
 static void mqtt_event_handler(void* handler_args, esp_event_base_t base, int32_t event_id, void* event_data) {
-  ESP_LOGD(TAG, "Event dispatched from event loop base=%s, event_id=%" PRIi32 "", base, event_id);
+  ESP_LOGD(MQTT_TAG, "Event dispatched from event loop base=%s, event_id=%" PRIi32 "", base, event_id);
   esp_mqtt_event_handle_t event   = (esp_mqtt_event_handle_t) event_data;
   esp_mqtt_client_handle_t client = event->client;
   // int msg_id;
   switch ((esp_mqtt_event_id_t) event_id) {
     case MQTT_EVENT_CONNECTED:
-      ESP_LOGI(TAG, "MQTT_EVENT_CONNECTED");
+      ESP_LOGI(MQTT_TAG, "MQTT_EVENT_CONNECTED");
       // msg_id = esp_mqtt_client_publish(client, "/topic/qos1", "data_3", 0, 1, 0);
       // ESP_LOGI(TAG, "sent publish successful, msg_id=%d", msg_id);
 
@@ -104,6 +104,8 @@ static void mqtt_event_handler(void* handler_args, esp_event_base_t base, int32_
 
       esp_mqtt_client_subscribe(client, "GeaVision/data/char", 0);
 
+      esp_mqtt_client_publish(client, "GeaVision/status", "online", 0, 0, 0);
+
       break;
     case MQTT_EVENT_DISCONNECTED:
       ESP_LOGI(TAG, "MQTT_EVENT_DISCONNECTED");
@@ -134,8 +136,8 @@ static void mqtt_event_handler(void* handler_args, esp_event_base_t base, int32_
         for (uint i = 0; i < lcd_data_len; i++) {
           lcd_data->push_back((uint8_t) (event->data[i]));
         }
-        ESP_LOGD(DISPLAY_TAG, "LCD data size: %d", lcd_data->size());
-        ESP_LOGD(DISPLAY_TAG, "%s", bin2str(event->data, event->data_len));
+        ESP_LOGD(DISPLAY_TAG, "LCD data size: %d", lcd_data_len);
+        ESP_LOGD(DISPLAY_TAG, "%s", bin2str(event->data, lcd_data_len));
       } else if (topic == "GeaVision/data/char") {
         ESP_LOGD(DISPLAY_TAG, "Received char data: %.*s", 1, event->data);
       } else if (topic == "GeaVision/data/string") {
@@ -274,6 +276,7 @@ void app_main(void) {
   esp_log_level_set("wifi", ESP_LOG_WARN);
   esp_log_level_set("wifi_init", ESP_LOG_WARN);
   esp_log_level_set(DISPLAY_TAG, ESP_LOG_DEBUG);
+  esp_log_level_set(TAG, ESP_LOG_DEBUG);
 
   // app_desc = esp_app_get_description();
 
@@ -347,6 +350,13 @@ void app_main(void) {
 
   esp_mqtt_client_config_t mqtt_cfg = {};
   mqtt_cfg.broker.address.uri       = mqtt_url.c_str();
+  mqtt_cfg.session.last_will.topic   = "GeaVision/status";
+  mqtt_cfg.session.last_will.msg     = "offline";
+  mqtt_cfg.session.last_will.msg_len = 7;
+  mqtt_cfg.session.last_will.qos     = 1;
+  mqtt_cfg.session.last_will.retain  = true;
+  mqtt_cfg.session.disable_clean_session = false;
+  mqtt_cfg.session.keepalive = 30;
 
   client = esp_mqtt_client_init(&mqtt_cfg);
   esp_mqtt_client_register_event(client, MQTT_EVENT_ANY, mqtt_event_handler, client);
@@ -359,7 +369,6 @@ void app_main(void) {
   lcd_data->reserve(CONFIG_GEA_DISPLAY_CHARACTERS * 5);
 
   while (1) {
-    ESP_LOGD(DISPLAY_TAG, "%d", lcd_data->size());
     lcd_write(spi, lcd_data->data(), lcd_data->size());
     vTaskDelay(200 / portTICK_PERIOD_MS);
   }