hq

Buffer.h

@@ -0,0 +1,52 @@
+#ifndef BUFFER_H
+#define BUFFER_H
+
+#include <cstring>
+
+class Buffer {
+private:
+    char* data_;
+    size_t size_;
+    size_t currentLength_;
+    const char separator_;
+    boolean overflow=false;
+
+public:
+    Buffer(size_t size, const char separator = '\0')
+            : size_(size), currentLength_(0), separator_(separator) {
+        data_ = new char[size_];
+        data_[0] = '\0';  // Ensure the buffer is null-terminated
+    }
+
+    ~Buffer() {
+        delete[] data_;
+    }
+
+    bool add(const char* str) {
+        size_t strLength = strlen(str);
+        if (currentLength_ + strLength + 1 + (currentLength_ > 0 && separator_ != '\0') < size_) {
+            if (currentLength_ > 0 && separator_ != '\0') {
+                strcat(data_, &separator_);
+                ++currentLength_;
+            }
+            strcat(data_, str);
+            currentLength_ += strLength;
+            return true;
+        } else {
+            overflow=true;
+            return false;
+        }
+    }
+
+    void clear() {
+        data_[0] = '\0';
+        currentLength_ = 0;
+        overflow=false;
+    }
+
+    const char* get() const {
+        return data_;
+    }
+};
+
+#endif

ESPBMS.ino

@@ -1,8 +1,6 @@
 #include "BLEDevice.h"
 #include <ETH.h>
-#include "WebSocketManager.h"
+#include "HQ.h"
-
-WebSocketManager wsManager("ws://chodbox.home.arpa", 8765, "/");
 
 static BLEUUID serviceUUID("0000ff00-0000-1000-8000-00805f9b34fb"); //xiaoxiang bms service
 static BLEUUID charUUID_rx("0000ff01-0000-1000-8000-00805f9b34fb"); //xiaoxiang bms rx id
@@ -34,7 +32,6 @@ void setup() {
     WiFi.onEvent(WiFiEvent);
     ETH.begin(ETH_ADDR, ETH_POWER_PIN, ETH_MDC_PIN, ETH_MDIO_PIN, ETH_TYPE, ETH_CLK_MODE);
     BLEDevice::init("");
-    wsManager.begin();
 }
 
 void loop() {
@@ -53,11 +50,6 @@ void loop() {
         delay(250);
     }
 
-    while(!wsManager.isConnected()){
-        Serial.println("Wait for socket...");
-        delay(250);
-    }
-
     for (int i = 0; i < foundDevices.getCount(); i++) {
         delay(1000);
         Serial.printf("\r\n\r\n===============================\r\n\r\n");
@@ -186,6 +178,7 @@ void loop() {
             }
         }
         pClient->disconnect();
+        hq.poll();
     }
     Serial.println("Reboot!");
     delay(100);
@@ -342,14 +335,14 @@ bool processBasicInfo(byte *data, unsigned int dataLen){
     uint16_t BalanceCodeHigh = (two_ints_into16(data[14], data[15]));
     uint8_t MosfetStatus = ((byte)data[20]);
 
-    wsManager.sendText("test.RC.%s.Voltage %f",currentName, (float)Volts / 1000);
+    hq.send("test.RC.%s.Voltage %f",currentName, (float)Volts / 1000);
-    wsManager.sendText("test.RC.%s.Amps %f",currentName, (float)Amps / 1000);
+    hq.send("test.RC.%s.Amps %f",currentName, (float)Amps / 1000);
-    wsManager.sendText("test.RC.%s.Watts %f",currentName, (float)Watts);
+    hq.send("test.RC.%s.Watts %f",currentName, (float)Watts);
-    wsManager.sendText("test.RC.%s.Capacity_Remain_Ah %f",currentName, (float)CapacityRemainAh / 1000);
+    hq.send("test.RC.%s.Capacity_Remain_Ah %f",currentName, (float)CapacityRemainAh / 1000);
-    wsManager.sendText("test.RC.%s.Capacity_Remain_Wh %f",currentName, ((float)(CapacityRemainAh) / 1000) * ((float)(Volts) / 1000));
+    hq.send("test.RC.%s.Capacity_Remain_Wh %f",currentName, ((float)(CapacityRemainAh) / 1000) * ((float)(Volts) / 1000));
-    wsManager.sendText("test.RC.%s.Capacity_Remain_Percent %d",currentName, CapacityRemainPercent);
+    hq.send("test.RC.%s.Capacity_Remain_Percent %d",currentName, CapacityRemainPercent);
-    wsManager.sendText("test.RC.%s.Temp1 %f",currentName, (float)Temp1 / 10);
+    hq.send("test.RC.%s.Temp1 %f",currentName, (float)Temp1 / 10);
-    wsManager.sendText("test.RC.%s.Temp2 %f",currentName, (float)Temp2 / 10);
+    hq.send("test.RC.%s.Temp2 %f",currentName, (float)Temp2 / 10);
     /*
     Serial.printf("%s Balance Code Low: 0x%x\r\n",currentName, BalanceCodeLow);
     Serial.printf("%s Balance Code High: 0x%x\r\n",currentName, BalanceCodeHigh);
@@ -383,13 +376,13 @@ bool processCellInfo(byte *data, unsigned int dataLen)
             _cellMin = CellVolt;
         }
 
-        wsManager.sendText("test.RC.%s.Cell.%d.Voltage %f",currentName, i+1,(float)CellVolt/1000);
+        hq.send("test.RC.%s.Cell.%d.Voltage %f",currentName, i+1,(float)CellVolt/1000);
     }
 
-    wsManager.sendText("test.RC.%s.Max_Cell_Voltage %f",currentName, (float)_cellMax / 1000);
+    hq.send("test.RC.%s.Max_Cell_Voltage %f",currentName, (float)_cellMax / 1000);
-    wsManager.sendText("test.RC.%s.Min_Cell_Voltage %f",currentName, (float)_cellMin / 1000);
+    hq.send("test.RC.%s.Min_Cell_Voltage %f",currentName, (float)_cellMin / 1000);
-    wsManager.sendText("test.RC.%s.Difference_Cell_Voltage %f",currentName, (float)(_cellMax - _cellMin) / 1000);
+    hq.send("test.RC.%s.Difference_Cell_Voltage %f",currentName, (float)(_cellMax - _cellMin) / 1000);
-    wsManager.sendText("test.RC.%s.Average_Cell_Voltage %f",currentName, (float)(_cellSum / NumOfCells) / 1000);
+    hq.send("test.RC.%s.Average_Cell_Voltage %f",currentName, (float)(_cellSum / NumOfCells) / 1000);
 
     gotCellInfo=true;
 

HQ.h

@@ -0,0 +1,98 @@
+#ifndef HQ_H
+#define HQ_H
+
+#include <WiFiClientSecure.h>
+#include <HTTPClient.h>
+#include "Buffer.h"
+#include "ca_cert.h"
+
+class HQ {
+public:
+    // Public static function to get the instance of the singleton class
+    static HQ& getInstance() {
+        static HQ instance; // Create a single instance of the class on first call
+        return instance; // Return the single instance on each call
+    }
+
+private:
+    // Private constructor and copy constructor to prevent outside instantiation
+    HQ(){
+        client = new WiFiClientSecure;
+        if(!client) {
+           Serial.printf("Unable to create HTTP client\r\n");
+        }
+        client->setCACert(ca_cert);
+        client->setHandshakeTimeout(5);
+    }
+    HQ(const HQ&) = delete;
+    Buffer txBuffer=Buffer(4096,'&');
+    Buffer rxBuffer=Buffer(1024,'\n');
+    WiFiClientSecure *client;
+
+public:
+    unsigned long httpErrors=0;
+    boolean send(const char *s){
+        Serial.printf("HQ_SEND:%s\r\n",s);
+        return txBuffer.add(s);
+    }
+    template<typename T, typename... Args>
+    boolean send(const char* format, T arg1, Args... args)
+    {
+        static char msg[1024];
+        snprintf(msg, 1024, format, arg1, args...);
+
+        return send(msg);
+    }
+
+    boolean poll(){
+        String payload;
+        if(strlen(txBuffer.get())){
+            payload+=txBuffer.get();
+        }
+        if(payload.isEmpty()){
+            return true;
+        }
+        HTTPClient https;
+        https.setTimeout(1000);
+        https.setConnectTimeout(1000);
+        https.addHeader("Content-Type","application/x-www-form-urlencoded");
+        String url="https://api.ecomotus.co.uk/api/v1/graphite";
+        Serial.printf("Connecting to %s\r\n",url.c_str());
+        if(!https.begin(*client, url)) {  // HTTPS
+            Serial.printf("HTTP Connection Failed\r\n");
+            httpErrors++;
+            return false;
+        }
+        int httpCode=https.POST(payload);
+        if(httpCode==200){
+            txBuffer.clear();
+            // Read all the lines of the reply from server and print them to Serial
+            boolean command=false;
+            char buff[128];
+            int totalSize=0;
+            WiFiClient * stream = https.getStreamPtr();
+            while(stream->available() && totalSize<1000) {
+                size_t size=stream->readBytesUntil('\n',buff,120);
+                totalSize+=size;
+                buff[size]=0;
+                Serial.printf("Response: %s\r\n",buff);
+                if(command==true){
+                    rxBuffer.add(buff);
+                    command=false;
+                }
+                if(0==strcmp(buff,"COMMAND")){
+                    command=true;
+                }
+            }
+            Serial.printf("Got %d bytes\r\n",totalSize);
+        }else{
+            Serial.printf("HTTP Error: %d\r\n",httpCode);
+            httpErrors++;
+            return false;
+        }
+        return true;
+    }
+};
+
+HQ& hq = HQ::getInstance();
+#endif

WebSocketManager.h

@@ -1,83 +0,0 @@
-#ifndef WEBSOCKETMANAGER_H
-#define WEBSOCKETMANAGER_H
-
-#include <WebSocketsClient.h>
-#include <WiFiClientSecure.h>
-#include <WiFiClient.h>
-#include "ca_cert.h"
-
-class WebSocketManager {
-public:
-    WebSocketManager(const char* server, uint16_t port, const char* url) {
-        serverUrl = server;
-        serverPort = port;
-        serverPath = url;
-    }
-
-    void begin() {
-        xTaskCreate(&WebSocketManager::webSocketTask, "WebSocketTask", 8192, nullptr, 1, nullptr);
-    }
-
-    template<typename... Args>
-    void sendText(const char* format, Args... args) {
-        if (webSocket.isConnected() && isConnected) {
-            char buffer[512]; // Define a buffer to hold the constructed message
-            snprintf(buffer, sizeof(buffer), format, args...); // Use snprintf to format the string
-            webSocket.sendTXT(buffer);
-        }
-    }
-
-    static bool isConnected() {
-        return connected;
-    }
-
-private:
-    static void webSocketTask(void *param) {
-        WiFiClient client;
-        //client.setCACert(ca_cert);
-        //webSocket.beginSSL(serverUrl.c_str(), serverPort, serverPath.c_str(), ca_cert);
-        webSocket.begin(serverUrl.c_str(), serverPort, serverPath.c_str());
-        webSocket.onEvent(webSocketEvent);
-        webSocket.setReconnectInterval(1000);
-
-        for (;;) {
-            webSocket.loop();
-            vTaskDelay(1 / portTICK_PERIOD_MS);
-        }
-    }
-
-    static void webSocketEvent(WStype_t type, uint8_t * payload, size_t length) {
-        switch (type) {
-            case WStype_DISCONNECTED:
-                connected = false;
-                Serial.println("[WebSocket] Disconnected");
-                break;
-            case WStype_CONNECTED:
-                connected = true;
-                Serial.println("[WebSocket] Connected");
-                break;
-            case WStype_TEXT:
-                Serial.print("[WebSocket] Received: ");
-                Serial.println((char*)payload);
-                break;
-            case WStype_BIN:
-                Serial.println("[WebSocket] Received binary data");
-                break;
-        }
-    }
-
-    static WebSocketsClient webSocket;
-    static String serverUrl;
-    static uint16_t serverPort;
-    static String serverPath;
-    static bool connected;
-};
-
-// Define static members
-WebSocketsClient WebSocketManager::webSocket;
-String WebSocketManager::serverUrl = "";
-uint16_t WebSocketManager::serverPort = 0;
-String WebSocketManager::serverPath = "";
-bool WebSocketManager::connected = false;
-
-#endif // WEBSOCKETMANAGER_H

victron.ino

@@ -185,12 +185,12 @@ void decodeVictron(BLEAdvertisedDevice advertisedDevice) {
       return;
     }
 
-    wsManager.sendText("test.RC.MPPT.1.Battery_Volts %f",batteryVoltage);
+    hq.send("test.RC.MPPT.1.Battery_Volts %f",batteryVoltage);
-    wsManager.sendText("test.RC.MPPT.1.Battery_Amps %f",batteryCurrent);
+    hq.send("test.RC.MPPT.1.Battery_Amps %f",batteryCurrent);
-    wsManager.sendText("test.RC.MPPT.1.Battery_Watts %f",batteryVoltage*batteryCurrent);
+    hq.send("test.RC.MPPT.1.Battery_Watts %f",batteryVoltage*batteryCurrent);
-    wsManager.sendText("test.RC.MPPT.1.Solar_Watts %f",inputPower);
+    hq.send("test.RC.MPPT.1.Solar_Watts %f",inputPower);
-    wsManager.sendText("test.RC.MPPT.1.Output_Current %f",outputCurrent);
+    hq.send("test.RC.MPPT.1.Output_Current %f",outputCurrent);
-    wsManager.sendText("test.RC.MPPT.1.Yield %f",todayYield);
+    hq.send("test.RC.MPPT.1.Yield %f",todayYield);
-    wsManager.sendText("test.RC.MPPT.1.State %d",deviceState);
+    hq.send("test.RC.MPPT.1.State %d",deviceState);
   }
 }