Update Readme.md

Bug Fix - driver

README.md

@@ -1,2 +1,104 @@
-# NodeMasterSlaveSimulator
-IoT Drivers Skill Task 
+# NodeJS Master-Slave Simulator
+
+IoT Drivers applications is build based on nodejs which use ZeroMQ as messaging queue using broker-less architecture and pub-sub model. Driver is user interactable (command-line tool), based on the command provided by user driver initiates the requests to simulator. If there is no response from the Simulator, timeout occurs after 3 secs for each request. 
+
+## Repo Clone
+ Clone the code from below git
+```
+git clone https://github.com/sathyendranv/NodeMasterSlaveSimulator.git
+```
+
+## Prerequisite
+
+Nodejs (Version 12.22.12) - Tested with this version.
+
+[Install Nodejs for Windows](https://phoenixnap.com/kb/install-node-js-npm-on-windows)
+
+
+## Installation
+
+Following node modules needs to be installed using the package manager npm.
+
+1. [ZeroMQ](https://www.npmjs.com/package/zeromq)
+
+   ZeroMQ used as broker-less architecture to communicate between the driver and Simulator on Socket ports using pub-sub model. 
+
+   #### Usage
+   ```
+   > cd NodeMasterSlaveSimulator
+   NodeMasterSlaveSimulator> npm install zeromq
+   ```
+## Running Driver
+   ```
+   > cd NodeMasterSlaveSimulator
+   NodeMasterSlaveSimulator> cd driver
+   NodeMasterSlaveSimulator/driver>  node driver_main.js
+   ```
+## Driver Supported Commands
+   ```
+   NodeMasterSlaveSimulator/driver>  node driver_main.js
+   Cmd?> ?
+   Supported command:
+    Command              Description
+    --------             -------------
+    device online        To Check whether the Device is online(connected)
+    help/?               Show Help Window
+    quit/exit/q          Exit or Quit the Driver
+    connect simulator    Connect or reconnect to Simulator
+    s/S                  Request to send current stable weight from Simulator
+   ```
+## Sample Weight Balance Simulation Response
+   ```
+Cmd?> s
+Sending Request to get the Current Weight...
+Current Weight Response Received...
+Current Stable Net Weight Value is 909 Kilogram (kg) measured at Thu Jul 28 2022 00:36:01 GMT+0530 (India Standard Time)
+Balance in overload Range
+Cmd?> s
+Sending Request to get the Current Weight...
+Current Weight Response Received...
+Current Stable Net Weight Value is 118 Tonne (t) measured at Thu Jul 28 2022 00:36:08 GMT+0530 (India Standard Time)
+Balance in underload Range
+Cmd?> s
+Sending Request to get the Current Weight...
+Current Weight Response Received...
+Current Stable Net Weight Value is 387 Decagram (dag) measured at Thu Jul 28 2022 00:36:10 GMT+0530 (India Standard Time)
+   ```
+
+## Check Simulator is online from driver
+   ```
+   NodeMasterSlaveSimulator/driver>  node driver_main.js
+   Cmd?> device online
+   Checking the Simulator is online...
+   Simulator is not online. Please start the simulator.
+   Cmd?> 
+   ```
+## Running Simulator
+   ```
+   > cd NodeMasterSlaveSimulator
+   NodeMasterSlaveSimulator> cd simulator
+   NodeMasterSlaveSimulator/simulator> node simulator.js
+   ```
+
+## Simulator Logs
+  Every request and response, received or sent are logged to console.
+```
+Received Request to check Simulator Online?. Sending response now...
+----------------------------------------------------------------------------
+Received Request for Sending Current Stable Weight
+Sending...
+Current Weight: 0
+Weight unit: na
+----------------------------------------------------------------------------
+Received Request for Sending Current Stable Weight
+Generating random weight value...
+Sending...
+Current Weight: 454
+Weight unit: g
+   ```
+## Contributing
+Pull requests are welcome. For major changes, please open an issue first to discuss what you would like to change.
+
+
+## License
+[MIT](https://github.com/sathyendranv/NodeMasterSlaveSimulator/blob/main/LICENSE.md)

driver/driver_main.js

@@ -127,6 +127,8 @@ function userinterface() {
                 {
                     console.log('Sending Request to get the Current Weight...');
                     sock.send(['/balancereq', '']);
+                    sendDeviceRequest = true;
+                    requestTimeout()
                 }
                 break;
             case 'quit':
@@ -170,11 +172,12 @@ const listener = async () => {
               case "/deviceresp":
                 {
                     sendDeviceRequest = false;
-                    console.log("Device Online Response Received... " + message.toString()); 
+                    console.log("Simulator is Online, Response Received... " + message.toString()); 
                 }
                 break;
               case "/balanceresp":
                 {
+                    sendDeviceRequest = false;
                     console.log("Current Weight Response Received... "); 
                     parseWeightMessage(message.toString());
                 }