S14: Smart Weather Clock - Revision history

Preet: /* Project Source Code */

2014-08-06T23:38:12Z

‎Project Source Code

Preet: /* Grading Criteria */

2014-05-25T20:58:03Z

‎Grading Criteria

Proj user1: /* 4. Nordic Wireless Server-Client */

2014-05-25T05:59:11Z

‎4. Nordic Wireless Server-Client

Proj user1: /* Hardware Design */

2014-05-25T05:57:04Z

‎Hardware Design

Proj user1: /* Hardware Design */

2014-05-25T05:56:33Z

‎Hardware Design

Proj user1: /* 2. Graphics LCD */

2014-05-25T05:55:41Z

‎2. Graphics LCD

Proj user1: /* Electric Imp Bringup */

2014-05-25T05:53:24Z

‎Electric Imp Bringup

Proj user1: /* Objectives & Introduction */

2014-05-25T05:50:51Z

‎Objectives & Introduction

Proj user1: /* Challenges faced */

2014-05-25T05:47:00Z

‎Challenges faced

Proj user1: /* Hardware Interface */

2014-05-25T05:20:55Z

‎Hardware Interface

@@ Line 761: / Line 761: @@
 === Project Source Code ===
-Send me your zipped source code and I will upload this to SourceForge and link it for you.
+*  [https://sourceforge.net/projects/sjsu/files/CmpE244_SJSU_S2014/ Project source code is available at SourceForge]
 == Acknowledgement ==

← Older revision		Revision as of 20:58, 25 May 2014
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−	~~=== Grading Criteria ===~~
−	~~<font color="green">~~
−	* How well is Software & Hardware Design described?
−	* How well can this report be used to reproduce this project?
−	* Code Quality
−	* Overall Report Quality:
−	** Software Block Diagrams
−	** Hardware Block Diagrams
−	**: Schematic Quality
−	** Quality of technical challenges and solutions adopted.
−	~~</font>~~
−
	== Project Title ==		== Project Title ==

@@ Line 627: / Line 627: @@
 There are three nodes to get data from in our case and hence one by one we ask for data from all the three clients. We have employed the condition wherein it checks which node we are asking the data from.
 The wireless_send() function sends the data packet and it returns true if the sending is accomplished successfully and if it returns false then there was a failure in sending the packet. Let us assume that the master sends the data packet to the slave successfully then upon receiving the acknowledgement of the data packet it waits for the slave to return back the packet successfully duly containing the temperature and humidity sensor data. Upon reception it prints the reception message and further the server or the master goes on to print or display the data packet in entirety according to the TCP/IP standard protocol.
-[[File:CmpE244 S14 SWC Nordic block diagram.jpg|500px|thumb|right|Server-Client Communication model]]
+[[File:CmpE244 S14 SWC Nordic block diagram.jpg|400px|thumb|right|Server-Client Communication model]]
 The next step is to deform the packet the same way as it was formed. After deforming the packet, temperature data and the humidity data is given to the output.

@@ Line 152: / Line 152: @@
 === Hardware Design ===
-[[File:CmpE244_S14_SWC_SCHEMATIC.jpg|thumb|Schematics]]
+[[File:CmpE244_S14_SWC_SCHEMATIC.jpg|1000pxthumb|Schematics]]
 === Hardware Interface ===

@@ Line 152: / Line 152: @@
 === Hardware Design ===
-[[File:CmpE244_S14_SWC_SCHEMATIC.jpg]]
+[[File:CmpE244_S14_SWC_SCHEMATIC.jpg|thumb|Schematics]]
 === Hardware Interface ===

@@ Line 469: / Line 469: @@
 It’s a graphic LCD with a resolution of 240x320 which is very simple to use.
 The LCD can be used for making quick GUI’s.
-[[ Image:CmpE244 S14 SWC Environment.JPG|700px|thumb|right]]
+[[ Image:CmpE244 S14 SWC Environment.JPG|700px|thumb|right|Software IDE for Graphics LCD]]
 We need the IDE which is available on the website to program the LCD.
@@ Line 508: / Line 508: @@
 •	On clicking on the handler, we can see the various options available. Select the “Form1 activate”. This means that the Form1 would be activated when the button is pressed. Your basic GUI is now complete! It’s simple isn’t it?
-[[Image:CmpE244 S14 SWC FORM0_with_event.JPG|600px|thumb|left]]
+[[Image:CmpE244 S14 SWC FORM0_with_event.JPG|600px|thumb|left|Form startup screen]]
@@ Line 532: / Line 532: @@
 •	Remember the index which we talked about previously? We need to use those index numbers to address the object.
-[[Image:CmpE244 S14 SWC FORM0_with_properties.JPG|600px|thumb|right]]
+[[Image:CmpE244 S14 SWC FORM0_with_properties.JPG|600px|thumb|right|Form Properties]]
 •	We would recommend you to go through the ViSi-Genie Reference manual available on the app notes section of the website to understand the frame format in detail. Here’s the link: http://www.4dsystems.com.au/downloads/Software/4D-Workshop4-IDE/Docs/ViSi-Genie/ViSi-Genie-Reference-Manual-REV1.pdf

@@ Line 358: / Line 358: @@
 ''Make sure the power jumper on your April board is populated, and set to USB ''
-[[Image:CmpE244 S14 SWC DHT22 IMP App and blinkup.jpg|300px|left|thumb]]
+[[Image:CmpE244 S14 SWC DHT22 IMP App and blinkup.jpg|300px|left|thumb|Electric Imp blinkup]]
 '''Let's make sure your imp is getting power:'''
@@ Line 368: / Line 368: @@
 .	Remove the imp from the SD socket (blinkup will only work during the first minute the imp has power - we're going to reinsert the imp right before we click BlinkUp in the mobile app).
-[[File:CmpE244 S14 SWC Electricimp_led.png|500px|right]]
+[[File:CmpE244 S14 SWC Electricimp_led.png|500px|right|thumb|Led controlled via Electric IMP]]
 '''Enter your credentials in the mobile app:'''
@@ Line 422: / Line 422: @@
 . The Log window is where you can view system information (device on/off, connect/disconnect, as well as anything logged with server.log).
-[[Image:CmpE244 S14 SWC DHT22 IMP Agent device code.png|800px|right|thumb]]
+[[Image:CmpE244 S14 SWC DHT22 IMP Agent device code.png|800px|right|thumb|Agent-Device Sample Code]]
 '''Step 5: Writing the Code'''

@@ Line 23: / Line 23: @@
 * All weather information will be logged in the Flash memory and will also be displayed on the graphic LCD as a graph of the parameter v/s time when requested by the user.
-[[File:CmpE244_S14_SWC_BLOCK_DIG.jpg|900px]]
+[[File:CmpE244_S14_SWC_BLOCK_DIG.jpg|900px|System Block Diagram]]
 === Team Members & Responsibilities ===

← Older revision		Revision as of 05:47, 25 May 2014
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	· And one more thing, double check your connections.		· And one more thing, double check your connections.
		+
		+	'''4) For electric imp, JSON data is not updated regularly
		+
		+	Solution: Since every time, a new request is made by master node, updated weather data needs to be received back. For this, we used reponse.body().
		+
		+
		+	'''5) For electric imp, UART trying to read and write at the same time
		+
		+	Solution:This is a common synchronization problem and we used turn variable mechanism to avoid synchronization problem and simultaneously avoid read and write problem at the same time.

	===Issues interfacing the Sensor (DHT-22)===		===Issues interfacing the Sensor (DHT-22)===

← Older revision		Revision as of 05:20, 25 May 2014
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	* Its a device that we are using in our project to connect to the internet. Electric imp is equipped with inbuilt SPI, I2C and UART ports. We are using UART port to communicate with the SJ-one board in this project. There are three UART configuration in the hardware that can be used in software, UART12, UART57 and UART1289. UART12 and UART57 are used for regular Rx and Tx communication. Pins 1 and 5 are used for transmission whereas pins 2 and 7 in the respective configurations are used for reception. UART1289 configuration is used for transmission and reception with flow control signals RTS and CTS.		* Its a device that we are using in our project to connect to the internet. Electric imp is equipped with inbuilt SPI, I2C and UART ports. We are using UART port to communicate with the SJ-one board in this project. There are three UART configuration in the hardware that can be used in software, UART12, UART57 and UART1289. UART12 and UART57 are used for regular Rx and Tx communication. Pins 1 and 5 are used for transmission whereas pins 2 and 7 in the respective configurations are used for reception. UART1289 configuration is used for transmission and reception with flow control signals RTS and CTS.

−	* We have used UART57 mode for our project. Thus to interface and achieve communication between electric imp and SJ-one board, we have to connect Tx of imp with Rx of SJ-one and Tx of imp with Rx of SJ-one. By interfacing in this fashion, we make sure that data that is transferred by either imp or SJ-one will be received at the receiving end.	+	* We have used UART57 mode for our project. Thus to interface and achieve communication between electric imp and SJ-one board, we have to connect Tx of imp with Rx of SJ-one and Rx of imp with Tx of SJ-one. By interfacing in this fashion, we make sure that data that is transferred by either imp or SJ-one will be received at the receiving end.