commit d7e2a5a869237043ca3c9be396420c9f132cfacb Author: Filip B P Date: Mon Aug 14 10:15:36 2023 +0200 Initial commit from data-logger code diff --git a/.gitignore b/.gitignore new file mode 100644 index 0000000..89cc49c --- /dev/null +++ b/.gitignore @@ -0,0 +1,5 @@ +.pio +.vscode/.browse.c_cpp.db* +.vscode/c_cpp_properties.json +.vscode/launch.json +.vscode/ipch diff --git a/.vscode/extensions.json b/.vscode/extensions.json new file mode 100644 index 0000000..080e70d --- /dev/null +++ b/.vscode/extensions.json @@ -0,0 +1,10 @@ +{ + // 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" + ] +} diff --git a/.vscode/settings.json b/.vscode/settings.json new file mode 100644 index 0000000..8bd76e4 --- /dev/null +++ b/.vscode/settings.json @@ -0,0 +1,16 @@ +{ + "files.associations": { + "*.ejs": "html", + "*.conf": "cisco", + "*.dis": "cpp", + "optional": "cpp", + "istream": "cpp", + "ostream": "cpp", + "system_error": "cpp", + "array": "cpp", + "functional": "cpp", + "tuple": "cpp", + "type_traits": "cpp", + "utility": "cpp" + } +} \ No newline at end of file diff --git a/include/README b/include/README new file mode 100644 index 0000000..194dcd4 --- /dev/null +++ b/include/README @@ -0,0 +1,39 @@ + +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 usual convention is to give header files names that end with `.h'. +It is most portable to use only letters, digits, dashes, and underscores in +header file names, and at most one dot. + +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 diff --git a/lib/README b/lib/README new file mode 100644 index 0000000..6debab1 --- /dev/null +++ b/lib/README @@ -0,0 +1,46 @@ + +This directory is intended for project specific (private) libraries. +PlatformIO will compile them to static libraries and link into executable file. + +The source code of each library should be placed in a an own separate directory +("lib/your_library_name/[here are source files]"). + +For example, see a structure of the following two libraries `Foo` and `Bar`: + +|--lib +| | +| |--Bar +| | |--docs +| | |--examples +| | |--src +| | |- Bar.c +| | |- Bar.h +| | |- library.json (optional, 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 + +and a contents of `src/main.c`: +``` +#include +#include + +int main (void) +{ + ... +} + +``` + +PlatformIO Library Dependency Finder will find automatically dependent +libraries scanning project source files. + +More information about PlatformIO Library Dependency Finder +- https://docs.platformio.org/page/librarymanager/ldf.html diff --git a/platformio.ini b/platformio.ini new file mode 100644 index 0000000..2c5dccf --- /dev/null +++ b/platformio.ini @@ -0,0 +1,19 @@ +; 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:esp32dev] +platform = espressif32 +board = esp32dev +framework = arduino +upload_speed = 921600 +monitor_speed = 115200 +lib_deps = + knolleary/PubSubClient@^2.8 + bblanchon/ArduinoJson@^6.21.3 diff --git a/src/main.cpp b/src/main.cpp new file mode 100644 index 0000000..18da69c --- /dev/null +++ b/src/main.cpp @@ -0,0 +1,227 @@ +#include +#include +#include +#include + +const char *ssid = "PET Aflytningsvogn #43"; +const char *password = "zwr33htm"; + +const char *mqtt_server = "192.168.24.215"; +// const char *mqtt_server = "test.mosquitto.org"; + +WiFiClient espClient; +PubSubClient client(espClient); + +const int lm35_pin = 34; /* LM35 O/P pin */ +const int mic_pin = 35; +const int light_pin = 32; +const int motion_pin = 33; + +#define ADC_VREF_mV 3300.0 // in millivolt +#define ADC_RESOLUTION 4096.0 + +#define FILTER_LEN 15 + +float readADC_Avg(int pin) +{ + float avg = analogRead(pin); + for (int i = 0; i < 10; i++) + { + avg = (avg + analogRead(pin)) / 2; + delay(20); + } + return avg; +} + +void setup_wifi() +{ + delay(10); + // We start by connecting to a WiFi network + Serial.println(); + Serial.print("Connecting to "); + Serial.println(ssid); + + WiFi.begin(ssid, password); + + while (WiFi.status() != WL_CONNECTED) + { + delay(500); + Serial.print("."); + } + + Serial.println(""); + Serial.println("WiFi connected"); + Serial.println("IP address: "); + Serial.println(WiFi.localIP()); +} + +void reconnect() +{ + // Loop until we're reconnected + while (!client.connected()) + { + Serial.print("Attempting MQTT connection..."); + // Attempt to connect + if (client.connect("ESP8266Client")) + { + Serial.println("connected"); + } + else + { + Serial.print("failed, rc="); + Serial.print(client.state()); + Serial.println(" try again in 5 seconds"); + // Wait 5 seconds before retrying + delay(5000); + } + } +} + +void setup() +{ + Serial.begin(115200); + pinMode(lm35_pin, INPUT); + pinMode(mic_pin, INPUT); + pinMode(light_pin, INPUT); + pinMode(motion_pin, INPUT); + + pinMode(13, OUTPUT); + digitalWrite(13, HIGH); + + setup_wifi(); + client.setServer(mqtt_server, 1883); +} + +#define SOUND_MEASURE_INTERVAL 1000 * 10 +#define SOUND_HIGHEST_MEASURE_INTERVAL 200 +#define TEMP_MEASURE_INTERVAL 1000 * 10 + +unsigned long previousTemperatureMillis = 0; +unsigned long previousSoundMillis = 0; +unsigned long previousHighestSoundMillis = 0; + +bool lastMotionState; + +uint16_t highestSound = 0; +uint16_t runningAverageSound = 0; + +int j = 0; + +void loop() +{ + client.loop(); + if (!client.connected()) + { + reconnect(); + } + j++; + + unsigned long currentMillis = millis(); + + if (currentMillis - previousTemperatureMillis >= TEMP_MEASURE_INTERVAL) + { + // save the last time you blinked the LED + previousTemperatureMillis = currentMillis; + + analogSetClockDiv(255); + + float analogValueTemp = readADC_Avg(lm35_pin); + float analogValueLight = readADC_Avg(light_pin); + + analogSetClockDiv(1); + + float millivolts = analogValueTemp * (ADC_VREF_mV / ADC_RESOLUTION) * 2; + // float millivolts = analogReadMilliVolts(lm35_pin); + float celsius = millivolts / 10; // 6.5 is the callibration offset measured using an oscilliscope + Serial.print("raw= "); + Serial.print(analogValueTemp); + Serial.print(" in DegreeC= "); + Serial.println(celsius); + + DynamicJsonDocument docTemp(1024); + + docTemp["device"] = "esp32-1"; + docTemp["type"] = "temperature"; + docTemp["value"] = celsius; + + char bufferTemp[1024]; + size_t bufferTempSize = serializeJson(docTemp, bufferTemp); + client.publish("esp32/data", bufferTemp, bufferTempSize); + + Serial.print("Light: "); + Serial.println(analogValueLight); + + DynamicJsonDocument docLight(1024); + + docLight["device"] = "esp32-1"; + docLight["type"] = "light"; + docLight["value"] = analogValueLight; + + char bufferLight[1024]; + size_t bufferLightSize = serializeJson(docLight, bufferLight); + client.publish("esp32/data", bufferLight, bufferLightSize); + } + + uint16_t soundValue = analogRead(mic_pin); + + if (soundValue > highestSound) { + highestSound = soundValue; + } + + if (currentMillis - previousHighestSoundMillis >= SOUND_HIGHEST_MEASURE_INTERVAL) + { + previousHighestSoundMillis = currentMillis; + + if (runningAverageSound == 0) + { + runningAverageSound = highestSound; + } + else + { + runningAverageSound = (runningAverageSound + highestSound) / 2; + } + + highestSound = 0; + } + + if (currentMillis - previousSoundMillis >= SOUND_MEASURE_INTERVAL) + { + previousSoundMillis = currentMillis; + + Serial.print(j); + Serial.print(": sound: "); + Serial.println(runningAverageSound); + + DynamicJsonDocument doc(1024); + + doc["device"] = "esp32-1"; + doc["type"] = "sound"; + doc["value"] = runningAverageSound; + + char buffer[1024]; + size_t n = serializeJson(doc, buffer); + client.publish("esp32/data", buffer, n); + + runningAverageSound = 0; + j = 0; + } + + bool motionState = digitalRead(motion_pin); + + if (lastMotionState != motionState) { + Serial.print("Motionstate: "); + Serial.println(motionState); + + DynamicJsonDocument doc(1024); + + doc["device"] = "esp32-1"; + doc["type"] = "motion"; + doc["value"] = motionState; + + char buffer[1024]; + size_t n = serializeJson(doc, buffer); + client.publish("esp32/data", buffer, n); + + lastMotionState = motionState; + } +} \ No newline at end of file diff --git a/test/README b/test/README new file mode 100644 index 0000000..9b1e87b --- /dev/null +++ b/test/README @@ -0,0 +1,11 @@ + +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