Fix nextion waveform sending for multiple waveforms (#4408)

esphome/components/nextion/nextion.cpp

@@ -116,6 +116,7 @@ void Nextion::reset_(bool reset_nextion) {
     this->read_byte(&d);
   };
   this->nextion_queue_.clear();
+  this->waveform_queue_.clear();
 }
 
 void Nextion::dump_config() {
@@ -364,37 +365,21 @@ void Nextion::process_nextion_commands_() {
         ESP_LOGW(TAG, "Nextion reported baud rate invalid!");
         break;
       case 0x12:  // invalid Waveform ID or Channel # was used
-
+        if (this->waveform_queue_.empty()) {
-        if (!this->nextion_queue_.empty()) {
+          ESP_LOGW(TAG,
-          int index = 0;
+                   "Nextion reported invalid Waveform ID or Channel # was used but no waveform sensor in queue found!");
-          int found = -1;
+        } else {
-          for (auto &nb : this->nextion_queue_) {
+          auto &nb = this->waveform_queue_.front();
           NextionComponentBase *component = nb->component;
 
-            if (component->get_queue_type() == NextionQueueType::WAVEFORM_SENSOR) {
           ESP_LOGW(TAG, "Nextion reported invalid Waveform ID %d or Channel # %d was used!",
                    component->get_component_id(), component->get_wave_channel_id());
 
           ESP_LOGN(TAG, "Removing waveform from queue with component id %d and waveform id %d",
                    component->get_component_id(), component->get_wave_channel_id());
 
-              found = index;
-
-              delete component;  // NOLINT(cppcoreguidelines-owning-memory)
           delete nb;  // NOLINT(cppcoreguidelines-owning-memory)
-
+          this->waveform_queue_.pop_front();
-              break;
-            }
-            ++index;
-          }
-
-          if (found != -1) {
-            this->nextion_queue_.erase(this->nextion_queue_.begin() + found);
-          } else {
-            ESP_LOGW(
-                TAG,
-                "Nextion reported invalid Waveform ID or Channel # was used but no waveform sensor in queue found!");
-          }
         }
         break;
       case 0x1A:  // variable name invalid
@@ -697,17 +682,19 @@ void Nextion::process_nextion_commands_() {
       }
       case 0xFD: {  // data transparent transmit finished
         ESP_LOGVV(TAG, "Nextion reported data transmit finished!");
+        this->check_pending_waveform_();
         break;
       }
       case 0xFE: {  // data transparent transmit ready
         ESP_LOGVV(TAG, "Nextion reported ready for transmit!");
+        if (this->waveform_queue_.empty()) {
+          ESP_LOGE(TAG, "No waveforms in queue to send data!");
+          break;
+        }
 
-        int index = 0;
+        auto &nb = this->waveform_queue_.front();
-        int found = -1;
-        for (auto &nb : this->nextion_queue_) {
         auto *component = nb->component;
-          if (component->get_queue_type() == NextionQueueType::WAVEFORM_SENSOR) {
+        size_t buffer_to_send = component->get_wave_buffer_size() < 255 ? component->get_wave_buffer_size()
-            size_t buffer_to_send = component->get_wave_buffer().size() < 255 ? component->get_wave_buffer().size()
                                                                         : 255;  // ADDT command can only send 255
 
         this->write_array(component->get_wave_buffer().data(), static_cast<int>(buffer_to_send));
@@ -715,26 +702,9 @@ void Nextion::process_nextion_commands_() {
         ESP_LOGN(TAG, "Nextion sending waveform data for component id %d and waveform id %d, size %zu",
                  component->get_component_id(), component->get_wave_channel_id(), buffer_to_send);
 
-            if (component->get_wave_buffer().size() <= 255) {
+        component->clear_wave_buffer(buffer_to_send);
-              component->get_wave_buffer().clear();
-            } else {
-              component->get_wave_buffer().erase(component->get_wave_buffer().begin(),
-                                                 component->get_wave_buffer().begin() + buffer_to_send);
-            }
-            found = index;
-            delete component;  // NOLINT(cppcoreguidelines-owning-memory)
         delete nb;  // NOLINT(cppcoreguidelines-owning-memory)
-            break;
+        this->waveform_queue_.pop_front();
-          }
-          ++index;
-        }
-
-        if (found == -1) {
-          ESP_LOGE(TAG, "No waveforms in queue to send data!");
-          break;
-        } else {
-          this->nextion_queue_.erase(this->nextion_queue_.begin() + found);
-        }
         break;
       }
       default:
@@ -1093,17 +1063,28 @@ void Nextion::add_addt_command_to_queue(NextionComponentBase *component) {
   // NOLINTNEXTLINE(cppcoreguidelines-owning-memory)
   nextion::NextionQueue *nextion_queue = new nextion::NextionQueue;
 
-  // NOLINTNEXTLINE(cppcoreguidelines-owning-memory)
+  nextion_queue->component = component;
-  nextion_queue->component = new nextion::NextionComponentBase;
   nextion_queue->queue_time = millis();
 
+  this->waveform_queue_.push_back(nextion_queue);
+  if (this->waveform_queue_.size() == 1)
+    this->check_pending_waveform_();
+}
+
+void Nextion::check_pending_waveform_() {
+  if (this->waveform_queue_.empty())
+    return;
+
+  auto *nb = this->waveform_queue_.front();
+  auto *component = nb->component;
   size_t buffer_to_send = component->get_wave_buffer_size() < 255 ? component->get_wave_buffer_size()
                                                                   : 255;  // ADDT command can only send 255
 
   std::string command = "addt " + to_string(component->get_component_id()) + "," +
                         to_string(component->get_wave_channel_id()) + "," + to_string(buffer_to_send);
-  if (this->send_command_(command)) {
+  if (!this->send_command_(command)) {
-    this->nextion_queue_.push_back(nextion_queue);
+    delete nb;  // NOLINT(cppcoreguidelines-owning-memory)
+    this->waveform_queue_.pop_front();
   }
 }
 

esphome/components/nextion/nextion.h

@@ -740,6 +740,7 @@ class Nextion : public NextionBase, public PollingComponent, public uart::UARTDe
 
  protected:
   std::deque<NextionQueue *> nextion_queue_;
+  std::deque<NextionQueue *> waveform_queue_;
   uint16_t recv_ret_string_(std::string &response, uint32_t timeout, bool recv_flag);
   void all_components_send_state_(bool force_update = false);
   uint64_t comok_sent_ = 0;
@@ -780,6 +781,8 @@ class Nextion : public NextionBase, public PollingComponent, public uart::UARTDe
                                                  const std::string &variable_name_to_send,
                                                  const std::string &state_value, bool is_sleep_safe = false);
 
+  void check_pending_waveform_();
+
 #ifdef USE_NEXTION_TFT_UPLOAD
 #ifdef USE_ESP8266
   WiFiClient *wifi_client_{nullptr};

esphome/components/nextion/nextion_component_base.h

@@ -69,6 +69,13 @@ class NextionComponentBase {
 
   std::vector<uint8_t> get_wave_buffer() { return this->wave_buffer_; }
   size_t get_wave_buffer_size() { return this->wave_buffer_.size(); }
+  void clear_wave_buffer(size_t buffer_sent) {
+    if (this->wave_buffer_.size() <= buffer_sent) {
+      this->wave_buffer_.clear();
+    } else {
+      this->wave_buffer_.erase(this->wave_buffer_.begin(), this->wave_buffer_.begin() + buffer_sent);
+    }
+  }
 
   std::string get_variable_name() { return this->variable_name_; }
   std::string get_variable_name_to_send() { return this->variable_name_to_send_; }