Fall detection MPU6050 sensor with esp32
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Use code tags to format code for the forum`#include <Arduino.h>
#include <WiFi.h>
#include <AsyncTCP.h>
#include <ESPAsyncWebServer.h>
#include <Adafruit_MPU6050.h>
#include <Adafruit_Sensor.h>
#include <Arduino_JSON.h>
#include "LittleFS.h"
#include "SPIFFS.h"
// Replace with your network credentials
const char* ssid = "UOB Events";
const char* password = "uob.!.2019";
// Create AsyncWebServer object on port 80
AsyncWebServer server(80);
// Create an Event Source on /events
AsyncEventSource events("/events");
// Json Variable to Hold Sensor Readings
JSONVar readings;
// Timer variables
unsigned long lastTime = 0;
unsigned long lastTimeTemperature = 0;
unsigned long lastTimeAcc = 0;
unsigned long gyroDelay = 10;
unsigned long temperatureDelay = 1000;
unsigned long accelerometerDelay = 200;
// Create a sensor object
Adafruit_MPU6050 mpu;
sensors_event_t a, g, temp;
float gyroX, gyroY, gyroZ;
float accX, accY, accZ;
float temperature;
//Gyroscope sensor deviation
float gyroXerror = 0.07;
float gyroYerror = 0.03;
float gyroZerror = 0.01;
// Init MPU6050
void initMPU(){
if (!mpu.begin()) {
Serial.println("Failed to find MPU6050 chip");
while (1) {
delay(10);
}
}
Serial.println("MPU6050 Found!");
}
void initLittleFS() {
if (!LittleFS.begin()) {
Serial.println("An error has occurred while mounting LittleFS");
}
Serial.println("LittleFS mounted successfully");
}
// Initialize WiFi
void initWiFi() {
WiFi.mode(WIFI_STA);
WiFi.begin(ssid, password);
Serial.println("");
Serial.print("Connecting to WiFi...");
while (WiFi.status() != WL_CONNECTED) {
Serial.print(".");
delay(1000);
}
Serial.println("");
Serial.println(WiFi.localIP());
}
String getGyroReadings(){
mpu.getEvent(&a, &g, &temp);
float gyroX_temp = g.gyro.x;
if(abs(gyroX_temp) > gyroXerror) {
gyroX += gyroX_temp/50.00;
}
float gyroY_temp = g.gyro.y;
if(abs(gyroY_temp) > gyroYerror) {
gyroY += gyroY_temp/70.00;
}
float gyroZ_temp = g.gyro.z;
if(abs(gyroZ_temp) > gyroZerror) {
gyroZ += gyroZ_temp/90.00;
}
readings["gyroX"] = String(gyroX);
readings["gyroY"] = String(gyroY);
readings["gyroZ"] = String(gyroZ);
String jsonString = JSON.stringify(readings);
return jsonString;
}
String getAccReadings() {
mpu.getEvent(&a, &g, &temp);
// Get current acceleration values
accX = a.acceleration.x;
accY = a.acceleration.y;
accZ = a.acceleration.z;
readings["accX"] = String(accX);
readings["accY"] = String(accY);
readings["accZ"] = String(accZ);
String accString = JSON.stringify (readings);
return accString;
}
String getTemperature(){
mpu.getEvent(&a, &g, &temp);
temperature = temp.temperature;
return String(temperature);
}
void setup() {
Serial.begin(115200);
initWiFi();
initLittleFS();
initMPU();
// Handle Web Server
server.on("/", HTTP_GET, [](AsyncWebServerRequest *request){
request->send(LittleFS, "/index.html", "text/html");
});
server.serveStatic("/", LittleFS, "/");
server.on("/reset", HTTP_GET, [](AsyncWebServerRequest *request){
gyroX=0;
gyroY=0;
gyroZ=0;
request->send(200, "text/plain", "OK");
});
server.on("/resetX", HTTP_GET, [](AsyncWebServerRequest *request){
gyroX=0;
request->send(200, "text/plain", "OK");
});
server.on("/resetY", HTTP_GET, [](AsyncWebServerRequest *request){
gyroY=0;
request->send(200, "text/plain", "OK");
});
server.on("/resetZ", HTTP_GET, [](AsyncWebServerRequest *request){
gyroZ=0;
request->send(200, "text/plain", "OK");
});
// Handle Web Server Events
events.onConnect([](AsyncEventSourceClient *client){
if(client->lastId()){
Serial.printf("Client reconnected! Last message ID that it got is: %u\n", client->lastId());
}
// send event with message "hello!", id current millis
// and set reconnect delay to 1 second
client->send("hello!", NULL, millis(), 10000);
});
server.addHandler(&events);
server.begin();
}
void loop() {
if ((millis() - lastTime) > gyroDelay) {
// Send Events to the Web Server with the Sensor Readings
events.send(getGyroReadings().c_str(),"gyro_readings",millis());
lastTime = millis();
}
if ((millis() - lastTimeAcc) > accelerometerDelay) {
// Send Events to the Web Server with the Sensor Readings
events.send(getAccReadings().c_str(),"accelerometer_readings",millis());
lastTimeAcc = millis();
}
if ((millis() - lastTimeTemperature) > temperatureDelay) {
// Send Events to the Web Server with the Sensor Readings
events.send(getTemperature().c_str(),"temperature_reading",millis());
lastTimeTemperature = millis();
}
}
Arduino: 1.8.19 (Windows 10), Board: "ESP32 Dev Module, Disabled, Disabled, Default 4MB with spiffs (1.2MB APP/1.5MB SPIFFS), 240MHz (WiFi/BT), QIO, 80MHz, 4MB (32Mb), 921600, Core 1, Core 1, None, Disabled, Disabled"
C:\Users\user\Documents\Arduino\libraries\ESPAsyncWebServer\src\WebAuthentication.cpp: In function 'bool getMD5(uint8_t*, uint16_t, char*)':
C:\Users\user\Documents\Arduino\libraries\ESPAsyncWebServer\src\WebAuthentication.cpp:74:3: error: 'mbedtls_md5_starts_ret' was not declared in this scope; did you mean 'mbedtls_md5_starts'?
74 | mbedtls_md5_starts_ret(&_ctx);
| ^~~~~~~~~~~~~~~~~~~~~~
| mbedtls_md5_starts
C:\Users\user\Documents\Arduino\libraries\ESPAsyncWebServer\src\WebAuthentication.cpp:75:3: error: 'mbedtls_md5_update_ret' was not declared in this scope; did you mean 'mbedtls_md5_update'?
75 | mbedtls_md5_update_ret(&_ctx, data, len);
| ^~~~~~~~~~~~~~~~~~~~~~
| mbedtls_md5_update
C:\Users\user\Documents\Arduino\libraries\ESPAsyncWebServer\src\WebAuthentication.cpp:76:3: error: 'mbedtls_md5_finish_ret' was not declared in this scope; did you mean 'mbedtls_md5_finish'?
76 | mbedtls_md5_finish_ret(&_ctx, _buf);
| ^~~~~~~~~~~~~~~~~~~~~~
| mbedtls_md5_finish
C:\Users\user\Documents\Arduino\libraries\ESPAsyncWebServer\src\AsyncEventSource.cpp: In member function 'void AsyncEventSourceClient::_queueMessage(AsyncEventSourceMessage*)':
C:\Users\user\Documents\Arduino\libraries\ESPAsyncWebServer\src\AsyncEventSource.cpp:189:7: error: 'ets_printf' was not declared in this scope; did you mean 'vswprintf'?
189 | ets_printf("ERROR: Too many messages queued\n");
| ^~~~~~~~~~
| vswprintf
C:\Users\user\Documents\Arduino\libraries\ESPAsyncWebServer\src\AsyncWebSocket.cpp: In member function 'void AsyncWebSocketClient::_queueMessage(AsyncWebSocketMessage*)':
C:\Users\user\Documents\Arduino\libraries\ESPAsyncWebServer\src\AsyncWebSocket.cpp:549:7: error: 'ets_printf' was not declared in this scope; did you mean 'vswprintf'?
549 | ets_printf("ERROR: Too many messages queued\n");
| ^~~~~~~~~~
| vswprintf
exit status 1
Error compiling for board ESP32 Dev Module.
This report would have more information with
"Show verbose output during compilation"
option enabled in File -> Preferences.