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https://github.com/UtilitechAS/amsreader-firmware.git
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Preparing project for use as a library
This commit is contained in:
Roar Fredriksen
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/*
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* Simple sketch to read MBus data from electrical meter
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* As the protocol requires "Even" parity, and this is
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* only supported on the hardware port of the ESP8266,
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* we'll have to use Serial1 for debugging.
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*
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* This means you'll have to program the ESP using the
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* regular RX/TX port, and then you must remove the FTDI
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* and connect the MBus signal from the meter to the
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* RS pin. The FTDI/RX can be moved to Pin2 for debugging
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*
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* Created 14. september 2017 by Roar Fredriksen
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*/
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#include <ESP8266WiFi.h>
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#include <PubSubClient.h>
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#include <ArduinoJson.h>
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#include "HanReader.h"
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// The HAN Port reader
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HanReader hanReader;
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// WiFi and MQTT endpoints
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const char* ssid = "Roar_Etne";
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const char* password = "**********";
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const char* mqtt_server = "192.168.10.203";
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WiFiClient espClient;
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PubSubClient client(espClient);
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void setup() {
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setupDebugPort();
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setupWiFi();
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setupMqtt();
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// initialize the HanReader
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// (passing Serial as the HAN port and Serial1 for debugging)
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hanReader.setup(&Serial, &Serial1);
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}
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void setupMqtt()
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{
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client.setServer(mqtt_server, 1883);
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}
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void setupDebugPort()
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{
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// Initialize the Serial1 port for debugging
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// (This port is fixed to Pin2 of the ESP8266)
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Serial1.begin(115200);
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while (!Serial1) {}
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Serial1.setDebugOutput(true);
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Serial1.println("Serial1");
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Serial1.println("Serial debugging port initialized");
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}
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void setupWiFi()
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{
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// Initialize wifi
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Serial1.print("Connecting to ");
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Serial1.println(ssid);
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WiFi.mode(WIFI_STA);
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WiFi.begin(ssid, password);
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while (WiFi.status() != WL_CONNECTED) {
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delay(500);
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Serial1.print(".");
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}
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Serial1.println("");
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Serial1.println("WiFi connected");
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Serial1.println("IP address: ");
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Serial1.println(WiFi.localIP());
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}
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void loop() {
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loopMqtt();
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// Read one byt from the port, and see if we got a full package
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if (hanReader.read())
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{
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// Get the list identifier
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List list = hanReader.getList();
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Serial1.println("");
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Serial1.print("List #");
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Serial1.print((byte)list, HEX);
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Serial1.print(": ");
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// Make sure we got a valid list
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if (list == List::ListUnknown)
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{
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Serial1.println("Invalid list");
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return;
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}
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// Get the timestamp (as unix time) from the package
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time_t time = hanReader.getPackageTime();
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// Define a json object to keep the data
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StaticJsonBuffer<500> jsonBuffer;
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JsonObject& root = jsonBuffer.createObject();
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// Any generic useful info here
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root["id"] = "espdebugger";
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root["up"] = millis();
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root["t"] = time;
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// Add a sub-structure to the json object,
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// to keep the data from the meter itself
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JsonObject& data = root.createNestedObject("data");
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// Based on the list number, get all details
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// according to OBIS specifications for the meter
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if (list == List::List1)
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{
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data["P"] = hanReader.getInt(List1_ObisObjects::ActivePowerImported);
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}
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else if (list == List::List2)
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{
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data["lv"] = hanReader.getString(List2_ObisObjects::ObisListVersionIdentifier);
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data["id"] = hanReader.getString(List2_ObisObjects::MeterID);
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data["type"] = hanReader.getString(List2_ObisObjects::MeterType);
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data["P"] = hanReader.getInt(List2_ObisObjects::ActivePowerImported);
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data["Q"] = hanReader.getInt(List2_ObisObjects::ReactivePowerImported);
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data["I1"] = hanReader.getInt(List2_ObisObjects::CurrentPhaseL1);
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data["I2"] = hanReader.getInt(List2_ObisObjects::CurrentPhaseL2);
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data["I3"] = hanReader.getInt(List2_ObisObjects::CurrentPhaseL3);
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data["U1"] = hanReader.getInt(List2_ObisObjects::VoltagePhaseL1);
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data["U2"] = hanReader.getInt(List2_ObisObjects::VoltagePhaseL1);
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data["U3"] = hanReader.getInt(List2_ObisObjects::VoltagePhaseL1);
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}
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else if (list == List::List3)
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{
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data["lv"] = hanReader.getString(List3_ObisObjects::ObisListVersionIdentifier);;
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data["id"] = hanReader.getString(List3_ObisObjects::MeterID);
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data["type"] = hanReader.getString(List3_ObisObjects::MeterType);
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data["P"] = hanReader.getInt(List3_ObisObjects::ActivePowerImported);
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data["Q"] = hanReader.getInt(List3_ObisObjects::ReactivePowerImported);
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data["I1"] = hanReader.getInt(List3_ObisObjects::CurrentPhaseL1);
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data["I2"] = hanReader.getInt(List3_ObisObjects::CurrentPhaseL2);
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data["I3"] = hanReader.getInt(List3_ObisObjects::CurrentPhaseL3);
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data["U1"] = hanReader.getInt(List3_ObisObjects::VoltagePhaseL1);
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data["U2"] = hanReader.getInt(List3_ObisObjects::VoltagePhaseL1);
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data["U3"] = hanReader.getInt(List3_ObisObjects::VoltagePhaseL1);
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data["tPI"] = hanReader.getInt(List3_ObisObjects::TotalActiveEnergyImported);
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data["tPO"] = hanReader.getInt(List3_ObisObjects::TotalActiveEnergyExported);
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data["tQI"] = hanReader.getInt(List3_ObisObjects::TotalReactiveEnergyImported);
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data["tQO"] = hanReader.getInt(List3_ObisObjects::TotalReactiveEnergyExported);
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}
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// Write the json to the debug port
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root.printTo(Serial1);
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Serial1.println();
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// Publish the json to the MQTT server
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char msg[1024];
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root.printTo(msg, 1024);
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client.publish("sensors/out/espdebugger", msg);
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}
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}
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// Ensure the MQTT lirary gets some attention too
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void loopMqtt()
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{
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if (!client.connected()) {
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reconnectMqtt();
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}
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client.loop();
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}
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void reconnectMqtt() {
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// Loop until we're reconnected
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while (!client.connected()) {
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Serial1.print("Attempting MQTT connection...");
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// Attempt to connect
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if (client.connect("ESP8266Client")) {
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Serial1.println("connected");
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// Once connected, publish an announcement...
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// client.publish("sensors", "hello world");
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// ... and resubscribe
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// client.subscribe("inTopic");
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}
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else {
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Serial1.print("failed, rc=");
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Serial1.print(client.state());
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Serial1.println(" try again in 5 seconds");
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// Wait 5 seconds before retrying
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delay(5000);
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}
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}
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}
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