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.gitignore vendored
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.pio
.vscode/.browse.c_cpp.db*
.vscode/c_cpp_properties.json
.vscode/launch.json
.vscode/ipch

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{
// See http://go.microsoft.com/fwlink/?LinkId=827846
// for the documentation about the extensions.json format
"recommendations": [
"platformio.platformio-ide"
],
"unwantedRecommendations": [
"ms-vscode.cpptools-extension-pack"
]
}

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LICENSE Normal file
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Copyright <yyyy, yyyy> The Open Group
Permission to use, copy, modify, distribute, and sell this software and
its documentation for any purpose is hereby granted without fee,
provided that the above copyright notice appear in all copies and that
both that copyright notice and this permission notice appear in
supporting documentation.
The above copyright notice and this permission notice shall be included
in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
IN NO EVENT SHALL BE LIABLE FOR ANY CLAIM, DAMAGES
OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR
THE USE OR OTHER DEALINGS IN THE SOFTWARE.
Except as contained in this notice, the name of The Open Group
shall not be used in advertising or otherwise to promote the sale, use
or other dealings in this Software without prior written authorization
from The Open Group.

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README.md Normal file
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# ky25_esp8266
Gas Verbrauchs Überwachtung mit reed Sensor

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This directory is intended for project header files.
A header file is a file containing C declarations and macro definitions
to be shared between several project source files. You request the use of a
header file in your project source file (C, C++, etc) located in `src` folder
by including it, with the C preprocessing directive `#include'.
```src/main.c
#include "header.h"
int main (void)
{
...
}
```
Including a header file produces the same results as copying the header file
into each source file that needs it. Such copying would be time-consuming
and error-prone. With a header file, the related declarations appear
in only one place. If they need to be changed, they can be changed in one
place, and programs that include the header file will automatically use the
new version when next recompiled. The header file eliminates the labor of
finding and changing all the copies as well as the risk that a failure to
find one copy will result in inconsistencies within a program.
In C, the convention is to give header files names that end with `.h'.
Read more about using header files in official GCC documentation:
* Include Syntax
* Include Operation
* Once-Only Headers
* Computed Includes
https://gcc.gnu.org/onlinedocs/cpp/Header-Files.html

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This directory is intended for project specific (private) libraries.
PlatformIO will compile them to static libraries and link into the executable file.
The source code of each library should be placed in a separate directory
("lib/your_library_name/[Code]").
For example, see the structure of the following example libraries `Foo` and `Bar`:
|--lib
| |
| |--Bar
| | |--docs
| | |--examples
| | |--src
| | |- Bar.c
| | |- Bar.h
| | |- library.json (optional. for custom build options, etc) https://docs.platformio.org/page/librarymanager/config.html
| |
| |--Foo
| | |- Foo.c
| | |- Foo.h
| |
| |- README --> THIS FILE
|
|- platformio.ini
|--src
|- main.c
Example contents of `src/main.c` using Foo and Bar:
```
#include <Foo.h>
#include <Bar.h>
int main (void)
{
...
}
```
The PlatformIO Library Dependency Finder will find automatically dependent
libraries by scanning project source files.
More information about PlatformIO Library Dependency Finder
- https://docs.platformio.org/page/librarymanager/ldf.html

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; PlatformIO Project Configuration File
;
; Build options: build flags, source filter
; Upload options: custom upload port, speed and extra flags
; Library options: dependencies, extra library storages
; Advanced options: extra scripting
;
; Please visit documentation for the other options and examples
; https://docs.platformio.org/page/projectconf.html
[env:d1_mini]
platform = espressif8266
board = d1_mini
framework = arduino
lib_deps =
bblanchon/ArduinoJson @ 6.21.3
pubsubclient @ 2.8
arduino-libraries/NTPClient@^3.2.1
monitor_speed = 115200

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#include <ESP8266WiFi.h>
#include <PubSubClient.h>
#include <NTPClient.h>
#include <WiFiUdp.h>
#include <ArduinoJson.h>
#include <EEPROM.h>
// Hardware Configuration
#define REED_PIN D3 // GPIO0 (mit internem Pullup)
const float PULSES_PER_M3 = 100.0; // Anpassen an Ihren Gaszähler
// Network Credentials
const char* SSID = "pipanet";
const char* PASS = "passatvr6";
// MQTT Configuration
const char* MQTT_SERVER = "192.168.2.173";
const char* STATE_TOPIC = "homeassistant/sensor/gas_meter/state";
const char* COMMAND_TOPIC = "homeassistant/sensor/gas_meter/set";
const char* CONFIG_TOPIC = "homeassistant/sensor/gas_meter/config";
const char* AVAILABILITY_TOPIC = "homeassistant/sensor/gas_meter/status";
// Global Variables
volatile unsigned long totalPulses = 0;
volatile unsigned long dailyPulses = 0;
volatile bool reedState = false;
volatile unsigned long lastDebounce = 0;
const unsigned long DEBOUNCE_MS = 50;
// Objects
WiFiUDP ntpUDP;
NTPClient timeClient(ntpUDP, "pool.ntp.org");
WiFiClient wifiClient;
PubSubClient mqtt(wifiClient);
void saveData() {
EEPROM.put(0, totalPulses);
EEPROM.put(sizeof(totalPulses), dailyPulses);
EEPROM.commit();
}
void loadData() {
EEPROM.begin(64);
EEPROM.get(0, totalPulses);
EEPROM.get(sizeof(totalPulses), dailyPulses);
}
void ICACHE_RAM_ATTR handleInterrupt() {
if (millis() - lastDebounce > DEBOUNCE_MS) {
bool currentState = digitalRead(REED_PIN);
if (currentState != reedState) {
if (currentState == LOW) {
totalPulses++;
dailyPulses++;
saveData();
}
reedState = currentState;
lastDebounce = millis();
}
}
}
void sendConfig() {
StaticJsonDocument<256> doc;
doc["name"] = "Gas Meter";
doc["dev_cla"] = "gas";
doc["stat_t"] = STATE_TOPIC;
doc["cmd_t"] = COMMAND_TOPIC;
doc["unit_of_meas"] = "";
doc["stat_cla"] = "total_increasing";
doc["val_tpl"] = "{{ value_json.total_m3 }}";
doc["avty_t"] = AVAILABILITY_TOPIC;
doc["pl_avail"] = "online";
doc["pl_not_avail"] = "offline";
doc["uniq_id"] = "gas_meter_" + String(ESP.getChipId(), HEX);
char config[256];
serializeJson(doc, config);
mqtt.publish(CONFIG_TOPIC, config, true);
}
void sendData() {
StaticJsonDocument<200> doc;
doc["total_m3"] = totalPulses / PULSES_PER_M3;
doc["daily_m3"] = dailyPulses / PULSES_PER_M3;
doc["total_pulses"] = totalPulses;
doc["timestamp"] = timeClient.getFormattedTime();
char output[200];
serializeJson(doc, output);
mqtt.publish(STATE_TOPIC, output, true);
Serial.printf("Sent: Total=%.1fm³, Daily=%.1fm³, Pulses=%lu\n",
totalPulses/PULSES_PER_M3,
dailyPulses/PULSES_PER_M3,
totalPulses);
}
void mqttCallback(char* topic, byte* payload, unsigned int length) {
String message;
for (unsigned int i = 0; i < length; i++) {
message += (char)payload[i];
}
if (String(topic) == COMMAND_TOPIC) {
if (message == "reset_total") {
totalPulses = 0;
} else if (message == "reset_daily") {
dailyPulses = 0;
}
saveData();
Serial.println("Counter reset via MQTT");
}
}
void reconnectMQTT() {
static unsigned long lastAttempt = 0;
if (!mqtt.connected() && millis() - lastAttempt > 5000) {
Serial.println("Attempting MQTT connection...");
if (mqtt.connect("GasMeter", AVAILABILITY_TOPIC, 1, true, "offline")) {
mqtt.publish(AVAILABILITY_TOPIC, "online", true);
mqtt.subscribe(COMMAND_TOPIC);
sendConfig();
Serial.println("MQTT connected!");
} else {
Serial.println("MQTT connection failed");
}
lastAttempt = millis();
}
}
void checkDailyReset() {
static int lastDay = -1;
timeClient.update();
int currentDay = timeClient.getDay();
if (lastDay != -1 && currentDay != lastDay) {
dailyPulses = 0;
saveData();
Serial.println("Daily counter reset");
}
lastDay = currentDay;
}
void setup() {
Serial.begin(115200);
Serial.println("\nBooting Gas Meter...");
// Load Data
EEPROM.begin(64);
loadData();
// Reed Switch
pinMode(REED_PIN, INPUT_PULLUP);
attachInterrupt(digitalPinToInterrupt(REED_PIN), handleInterrupt, CHANGE);
// WiFi
WiFi.begin(SSID, PASS);
while (WiFi.status() != WL_CONNECTED) {
delay(500);
Serial.print(".");
}
Serial.println("\nWiFi connected");
// NTP
timeClient.begin();
timeClient.update();
// MQTT
mqtt.setServer(MQTT_SERVER, 1883);
mqtt.setCallback(mqttCallback);
}
void loop() {
static unsigned long lastSend = 0;
timeClient.update();
mqtt.loop();
reconnectMQTT();
checkDailyReset();
if (millis() - lastSend >= 30000) {
if (mqtt.connected()) {
sendData();
}
lastSend = millis();
}
delay(10);
}

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{
"folders": [
{
"path": "../../../../docker/otterpy"
},
{
"name": "KY25_ESP8266",
"path": ".."
}
],
"settings": {}
}

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This directory is intended for PlatformIO Test Runner and project tests.
Unit Testing is a software testing method by which individual units of
source code, sets of one or more MCU program modules together with associated
control data, usage procedures, and operating procedures, are tested to
determine whether they are fit for use. Unit testing finds problems early
in the development cycle.
More information about PlatformIO Unit Testing:
- https://docs.platformio.org/en/latest/advanced/unit-testing/index.html