S17: Smart Health Gear - Revision history

Proj user10: /* Testing */

2018-05-10T22:34:42Z

‎Testing

Proj user5: /* Button event task */

2017-05-27T03:10:58Z

‎Button event task

Proj user5: /* Smart Health Gear */

2017-05-27T03:07:21Z

‎Smart Health Gear

Proj user5: /* Future Scope */

2017-05-27T03:06:29Z

‎Future Scope

Proj user5: /* Software Flow Chart */

2017-05-27T03:05:27Z

‎Software Flow Chart

Proj user5: /* Software Flow Chart */

2017-05-27T03:04:34Z

‎Software Flow Chart

Proj user5: /* Display Application Design */

2017-05-27T03:02:23Z

‎Display Application Design

Proj user5: /* Software Flow Chart */

2017-05-27T02:59:21Z

‎Software Flow Chart

Proj user5: /* Display Driver Design */

2017-05-27T02:58:04Z

‎Display Driver Design

Proj user5: /* Software Flow Chart */

2017-05-27T02:48:59Z

‎Software Flow Chart

← Older revision		Revision as of 22:34, 10 May 2018
Line 754:		Line 754:

	All the modules were integrated and tested. The device was worn on the wrist and the clip-on was wrapped on the finger. The device was then paired to a mobile phone using the Android App. The values on the display LCD and the Android App were cross checked. The values matched and were in the expected range. The buttons were pressed to navigate and lock the device. The time displayed on the screen was also verified with the the mobile phone time.		All the modules were integrated and tested. The device was worn on the wrist and the clip-on was wrapped on the finger. The device was then paired to a mobile phone using the Android App. The values on the display LCD and the Android App were cross checked. The values matched and were in the expected range. The buttons were pressed to navigate and lock the device. The time displayed on the screen was also verified with the the mobile phone time.
−

	== Technical Challenges ==		== Technical Challenges ==

@@ Line 557: / Line 557: @@
 ==== Button event task ====
-* Uses SSP0 interface to connect to the LCD
+* Button event task configures positive edge triggered interrupt for both "navigation" and "lock/unlock" buttons.
-* The LCD is initialized by sending commands to set the power, frame rate, pixel depth etc.,
+* The "navigation" button callback function changes screen state from "clock screen" to "sensor screen" triggers the display task and start the sensor screen timeout of 30 seconds.
-* The LCD application maintains the state between two screens, the default screen displays the current time and sensor screen shows the data collected from all the sensors
+* The "navigation" button  callback function resets the screen timeout counter if its already running.
-* The data from each of the sensor tasks is sent to its dedicated queue and is received by the Display task
+* The "lock/unlock" button callback function controls (ON/OFF) the power to LCD.
-* The Display task takes feedback from button task to read "navigation" and "lock/unlock" switch, one enables the user to view the LCD display while other turns on/off the LCD back light.
 ===== Pseudocode =====
-* The display task waits for a second elapse event from the 100ms base timer, on event it will compare the current time with the RTC time and if required it will only refresh the parameter which needs to be updated.
+* The "navigation" call back function triggers the task to save the current screen state (Used for "selective refresh") and changes screen state to "sensor screen", task starts timeout counter to restore the display into clock screen mode in absence of user interaction  (through switches) for 30 seconds.
-* If sensor screen needs to be displayed the default screen with time stamp is cleared and Sensor screen is displayed
+* The task is signaled by timer to reset the display back to clock screen on timer rollover event.

@@ Line 6: / Line 6: @@
 <tr>
 <td>
-[[File:CmpE244_S17_T5_SHG_android.jpg|400px|thumb|center|Wearable and Android App]]
+[[File:CmpE244_S17_T5_SHG_android.jpg|300px|thumb|center|Wearable and Android App]]
 </td>
 <td>
 </td>
 <td>
-[[File:CmpE244_S17_T5_SHG_mounted2.jpg|335px|thumb|center|Top view]]
+[[File:CmpE244_S17_T5_SHG_mounted2.jpg|235px|thumb|center|Top view]]
 </td>
 <td>
 </td>
 <td>
-[[File:CmpE244_S17_T5_SHG_mounted_leftview1.JPG|360px|thumb|center|Right view]]
+[[File:CmpE244_S17_T5_SHG_mounted_leftview1.JPG|260px|thumb|center|Right view]]
 </td>
 </tr>

@@ Line 788: / Line 788: @@
 *Add more features like Blood pressure measurement, calories, BMI and energy measurements
 *The device can be made rechargeable.
 *Provide notifications to user when something abnormal is detected.

@@ Line 578: / Line 578: @@
 <tr>
 <td>
-[[File:CmpE244_S17_T5_LCD_FlowChart.jpg|500px|thumb|center|Display Screens]]
+[[File:CmpE244_S17_T5_LCD_FlowChart.jpg|500px|thumb|center|Button Press]]
 </td>
 </tr>

← Older revision		Revision as of 03:02, 27 May 2017
Line 554:		Line 554:
	</syntaxhighlight>		</syntaxhighlight>

		+
		+	==== Button event task ====
		+
		+	* Uses SSP0 interface to connect to the LCD
		+	* The LCD is initialized by sending commands to set the power, frame rate, pixel depth etc.,
		+	* The LCD application maintains the state between two screens, the default screen displays the current time and sensor screen shows the data collected from all the sensors
		+	* The data from each of the sensor tasks is sent to its dedicated queue and is received by the Display task
		+	* The Display task takes feedback from button task to read "navigation" and "lock/unlock" switch, one enables the user to view the LCD display while other turns on/off the LCD back light.
		+	* The user can also swap the screens by pressing the "navigation" button
		+
		+
		+	===== Pseudocode =====
		+
		+	* The display task waits for a second elapse event from the 100ms base timer, on event it will compare the current time with the RTC time and if required it will only refresh the parameter which needs to be updated.
		+	* If sensor screen needs to be displayed the default screen with time stamp is cleared and Sensor screen is displayed
		+	* The sensor screen will receive the values from all the sensor tasks and display it over LCD.
		+
		+
		+	===== Software Flow Chart =====
		+
		+	<center>
		+	<table>
		+	<tr>
		+	<td>
		+
		+	</td>
		+	</tr>
		+	</table>
		+	</center>

	==== Display Application Design ====		==== Display Application Design ====

@@ Line 578: / Line 578: @@
 <tr>
 <td>
-[[File:CmpE244_S17_T5_LCD_FlowChart.jpg|200px|thumb|right|Button Press]]
+[[File:CmpE244_S17_T5_LCD_Display_Screens.jpg|500px|thumb|center|Display Screens]]
 </td>
 </tr>

@@ Line 555: / Line 555: @@
-==== Display Driver Design ====
+==== Display Application Design ====
-* Uses SPI interface to connect to the LCD
+* Uses SSP0 interface to connect to the LCD
-* The LCD interface is initialized by sending commands to set the power, frame rate, pixel depth etc.,
+* The LCD is initialized by sending commands to set the power, frame rate, pixel depth etc.,
-* The LCD screen is filled up pixel by pixel depending on what to display
+* The LCD application maintains the state between two screens, the default screen displays the current time and sensor screen shows the data collected from all the sensors
 * The data from each of the sensor tasks is sent to its dedicated queue and is received by the Display task
-* Captures data continuously and displays on sensor screen
+* The Display task takes feedback from button task to read "navigation" and "lock/unlock" switch, one enables the user to view the LCD display while other turns on/off the LCD back light.
-* There are two switches, one enables the user to turn on/off the LCD
+* The user can also swap the screens by pressing the "navigation" button
-* The user can also swap the screens by pressing the Sensor Screen button
 ===== Pseudocode =====
-* The Timer is initialized to count every 100 milli seconds and give screen change semaphore if the timer counts 300 times i.e., after 30 seconds.
+* The display task waits for a second elapse event from the 100ms base timer, on event it will compare the current time with the RTC time and if required it will only refresh the parameter which needs to be updated.
-* The timer gives timer_increment semaphore once the timer counts till 300
+* If sensor screen needs to be displayed the default screen with time stamp is cleared and Sensor screen is displayed
-* There are two tasks running Display Task and The Button Task
+* The sensor screen will receive the values from all the sensor tasks and display it over LCD.