From 8ae0be958ac05c473dd8a1f858b533fba54cde24 Mon Sep 17 00:00:00 2001
From: sridhar-mothe <sridharmothe37@gmail.com>
Date: Mon, 4 Nov 2024 10:22:45 +0000
Subject: [PATCH] code to send weights to the EMcontroller

---
 Emcontroller-Code.md | 172 ++++++++++++++++++++++++++++++++++++++++++-
 1 file changed, 171 insertions(+), 1 deletion(-)

diff --git a/Emcontroller-Code.md b/Emcontroller-Code.md
index 5d08b7b..ea60554 100644
--- a/Emcontroller-Code.md
+++ b/Emcontroller-Code.md
@@ -1 +1,171 @@
-Welcome to the Wiki.
\ No newline at end of file
+#include <BLEDevice.h>
+#include <BLEServer.h>
+#include <BLEUtils.h>
+#include <BLE2902.h>
+
+const int pwmPin = 16;
+const int dirPin = 17;
+const int doorSensorPin = 13;
+float i;
+String Command;
+int repCount;
+bool deviceConnected = false;
+bool doorWasClosed = false;
+int doorState;
+String temp;
+String repCountStr;
+
+const String serviceUuid = "12345678-1234-1234-1234-123456789abc";
+const String weightcharacteristicUuid = "abcd1234-1234-1234-1234-123456789abc";  //(weight)
+const String repscharacteristicUuid = "abcd5678-1234-1234-1234-123456789abc";    //(repeation)
+const String resetCharacteristicUuid = "abcd9101-1234-1234-1234-123456789abc";   //(reset)
+
+BLEServer* pServer = NULL;
+BLECharacteristic* pRepCountCharacteristic = NULL;
+BLECharacteristic* pWeightCharacteristic = NULL;
+BLECharacteristic* pStringCharacteristic = NULL;
+
+class MyServerCallbacks : public BLEServerCallbacks {
+  void onConnect(BLEServer* pServer) {
+    deviceConnected = true;
+    Serial.println("Device connected");
+  }
+
+  void onDisconnect(BLEServer* pServer) {
+    deviceConnected = false;
+    repCount = 0;
+    Command = "reset";
+    Serial.println("Device disconnected");
+    BLEDevice::startAdvertising();  // Restart advertising
+  }
+};
+
+class MyCallbacks : public BLECharacteristicCallbacks {
+  void onWrite(BLECharacteristic* pCharacteristic) {
+    std::string value = pCharacteristic->getValue().c_str();
+    temp = String(value.c_str());
+
+    // Check which characteristic received data
+
+    if (pCharacteristic->getUUID().equals(BLEUUID(weightcharacteristicUuid))) {
+      Serial.println("Received Weight Command: " + temp);
+      Command = temp;
+
+      // Set PWM value based on the received command using switch-case
+      switch (Command.toInt()) {
+        case 0: i = 0; break;
+        case 5: i = 1; break;
+        case 10: i = 6; break;
+        case 15: i = 10; break;
+        case 20: i = 15; break;
+        case 25: i = 16.12; break;
+        case 30: i = 19; break;
+        case 35: i =23 ; break;
+        case 40: i = 28; break;
+        // Equivalent to OFF
+        default: i = 0; break;
+      }
+
+      Serial.print("Received Command: ");
+      Serial.println(Command);
+
+      // Echo the command back to the app
+      pWeightCharacteristic->setValue((unsigned char*)value.c_str(), value.length());
+      pWeightCharacteristic->notify();
+      pRepCountCharacteristic->setValue(repCountStr.c_str());
+      pRepCountCharacteristic->notify();
+    } else if (pCharacteristic->getUUID().equals(BLEUUID(resetCharacteristicUuid))) {
+      // Handle the string data received from the app
+      Serial.println("Received String from APK: " + temp);
+      // Process the received string as needed
+      if (temp == "reset") {
+        repCount = 0;
+        i = 0;
+        Command = "0";
+      }
+    }
+  }
+};
+
+
+//pWeightCharacteristic->setValue((unsigned char*)value.c_str(), value.length());
+void setup() {
+
+  Serial.begin(115200);
+
+  pinMode(pwmPin, OUTPUT);
+  pinMode(dirPin, OUTPUT);
+  pinMode(doorSensorPin, INPUT);
+
+  digitalWrite(dirPin, HIGH);
+
+  BLEDevice::init("FlexiFitPro");
+  pServer = BLEDevice::createServer();
+  pServer->setCallbacks(new MyServerCallbacks());
+  BLEService* Service = pServer->createService(BLEUUID(serviceUuid));
+
+  // Repetition Count Service
+  pRepCountCharacteristic = Service->createCharacteristic(
+    BLEUUID(repscharacteristicUuid),
+    BLECharacteristic::PROPERTY_WRITE | BLECharacteristic::PROPERTY_NOTIFY);
+  pRepCountCharacteristic->addDescriptor(new BLE2902());
+
+  pWeightCharacteristic = Service->createCharacteristic(
+    BLEUUID(weightcharacteristicUuid),
+    BLECharacteristic::PROPERTY_WRITE | BLECharacteristic::PROPERTY_NOTIFY | BLECharacteristic::PROPERTY_READ);
+  pWeightCharacteristic->setCallbacks(new MyCallbacks());
+  Service->start();
+
+  pStringCharacteristic = Service->createCharacteristic(
+    BLEUUID(resetCharacteristicUuid),
+    BLECharacteristic::PROPERTY_WRITE | BLECharacteristic::PROPERTY_NOTIFY | BLECharacteristic::PROPERTY_READ);
+  pStringCharacteristic->setCallbacks(new MyCallbacks());
+  Service->start();
+
+  BLEAdvertising* pAdvertising = BLEDevice::getAdvertising();
+  pAdvertising->addServiceUUID(BLEUUID(serviceUuid));
+  pAdvertising->start();
+
+  Serial.println("BLE services are defined and advertising.");
+}
+
+void loop() {
+  doorState = digitalRead(doorSensorPin);
+
+  int doorState = digitalRead(doorSensorPin);
+
+  // Check if the door is closed
+  if (doorState == LOW) {
+    if (!doorWasClosed) {
+      // Transition from open to closed circuit
+      repCount++;
+      doorWasClosed = true;  // Update the flag
+      delay(1000);           // Add a 1-second delay to debounce or prevent multiple counts
+    }
+  } else {
+    // Door is open
+    doorWasClosed = false;  // Reset the flag
+  }
+
+
+  // Send rep count over BLE
+
+  if (deviceConnected) {
+    repCountStr = String(repCount);
+    pRepCountCharacteristic->setValue(repCountStr.c_str());
+    pWeightCharacteristic->setValue(Command.c_str());
+    pRepCountCharacteristic->notify();
+    pWeightCharacteristic->notify();
+    //Serial.println(" hi apk ");
+  }
+
+  Serial.print("command received :");
+  Serial.println(temp);
+  Serial.print("PWM value: ");
+  Serial.println(i);
+  Serial.print("Rep Count: ");
+  Serial.println(repCount);
+
+  analogWrite(pwmPin, i);
+  delay(10);
+}
\ No newline at end of file