S13: Door Alarm System - Revision history

Preet: /* Project Source Code */

2013-05-23T21:37:56Z

‎Project Source Code

Thanh s13: /* Testing & Technical Challenges */

2013-05-23T20:16:56Z

‎Testing & Technical Challenges

Thanh s13: /* Hardware Interface */

2013-05-23T20:03:13Z

‎Hardware Interface

Thanh s13: /* Hardware Interface */

2013-05-23T19:58:37Z

‎Hardware Interface

Thanh s13: /* Hardware Interface */

2013-05-23T19:35:16Z

‎Hardware Interface

Thanh s13: /* Hardware Interface */

2013-05-23T19:10:58Z

‎Hardware Interface

Thanh s13: /* Hardware Interface */

2013-05-23T16:32:06Z

‎Hardware Interface

Thanh s13: /* Hardware Interface */

2013-05-23T16:07:52Z

‎Hardware Interface

Thanh s13: /* Conclusion */

2013-05-23T08:51:11Z

‎Conclusion

Thanh s13: /* References */

2013-05-23T08:46:05Z

‎References

@@ Line 329: / Line 329: @@
 === 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/sjsus13/files/ Project source code is available at SourceForge]
 == References ==

@@ Line 310: / Line 310: @@
 * A powerful and stable power supply is needed in order to provide enough power to all components of the system.
 ** All GROUNDs need to be connected together in order to establish a common GROUND.
 == Conclusion ==

@@ Line 211: / Line 211: @@
 <div style="text-align: center;">'''Figure 9a:''' Servo Pinout (http://www.parallax.com)</div>
-[[File:CmpE146_S13_TP_servo_period.jpg|500px|thumb|center]]
+[[File:CmpE146_S13_TP_servo_period.jpg|600px|thumb|center]]
 <div style="text-align: center;">'''Figure 9b:''' Servo duty cycle (http://www.servocity.com/html/how_do_servos_work_.html)</div>
 <b>LCD </b><br>
@@ Line 218: / Line 222: @@
 [[File:CmpE146_S13_TP_lcd_pinout.png|500px|thumb|center]]
-<div style="text-align: center;">'''Figure 10:''' LCD Pinout</div>
+<div style="text-align: center;">'''Figure 10:''' LCD Pinout (http://www.newhavendisplay.com)</div>
 <b>RFID Reader and Tag </b><br>

@@ Line 209: / Line 209: @@
 [[File:CmpE146_S13_TP_servo_pinout.png|500px|thumb|center]]
-<div style="text-align: center;">'''Figure 9:''' Servo Pinout</div>
+<div style="text-align: center;">'''Figure 9a:''' Servo Pinout (http://www.parallax.com)</div>
 <b>LCD </b><br>

@@ Line 203: / Line 203: @@
 <b>Servo Module </b><br>
-The servo is used as a simulation for the door lock. It is interfaced to the SJ One board using PWM1.2 such that the input pin (white) of the servo is connected to P1.20 in the board.
+Servos are controlled by sending them a pulse of variable width via control wire. The angle that a servo turns is determined by the duration of a pulse that is applied to the control wire. This is called Pulse width Modulation
 [[File:CmpE146_S13_TP_servo_pinout.png|500px|thumb|center]]
@@ Line 215: / Line 218: @@
 <b>RFID Reader and Tag </b><br>
-The RFID reader is used to read data written in the RFID tags. It is interfaced to the SJ One board using UART 3 such that the TX pin (pin 9) of the RFID reader is connected to the RX pin (P4.29) of UART 3 in the board. This RFID reader uses a break out board for pins located on ID-12. It is worth mentioning the ID-2 does not come with an internal or external antenna. So the user is require to create an antenna from coiling copper wires. We used the ID-12LA which comes with an internal antenna. The following figures shows the pinout needed to communicate with this RFID device. The only pin require to use this device is GND, +5V, and D0 for UART communications. Both cards that came with the reader have a 12 bit string preloaded to the card.
+The RFID reader (ID-12) is used to read data written in the RFID tags. It is used with a break out board for easier pins located and connected.
 [[File:CmpE146 S13 TP rfid pinout.png|380px|thumb|center]]
 <div style="text-align: center;">'''Figure 11:''' Pinout for RFID reader</div>
@@ Line 223: / Line 229: @@
 <b>How to write a driver for UART</b><br>
 * Configure pin select (PINSEL) for UART, refer to the LPC1758 user manual for details
 * Setup and provide the clock to UART peripheral (PCLKSEL), refer to the LPC1758 user manual for details
@@ Line 228: / Line 235: @@
 <b>How to write a driver for PWM</b><br>
 * Power up the PWM, refer to the LPC1758 user manual for details
 * Setup and provide the clock to PWM peripheral (PCLKSEL), refer to the LPC1758 user manual for details

@@ Line 223: / Line 223: @@
 <b>How to write a driver for UART</b><br>
-* Configure pin select (PINSEL) for UART, refer the LPC1758 manual for details
+* Configure pin select (PINSEL) for UART, refer to the LPC1758 user manual for details
-* CLEAR then set Peripheral Clock divider (PCLK) refer the LPC1758 manual for details
+* Setup and provide the clock to UART peripheral (PCLKSEL), refer to the LPC1758 user manual for details
-* Write "putChar" and "getChar" function for the UART to transmit and receive data
+* Write "putChar" and "getChar" functions for the UART to transmit and receive data
 <b>How to write a driver for PWM</b><br>
-* Enable the PWM
+* Power up the PWM, refer to the LPC1758 user manual for details
-* Clear then set the Peripheral Clock divider (PCLK)
+* Setup and provide the clock to PWM peripheral (PCLKSEL), refer to the LPC1758 user manual for details
-* Reset on PWMMR0: the PWMTC will be reset if PWMMR0 matches it.
+* Reset the timer on Match Register 0 (MR0)
-* LPC_PWM1->MCR |= (1 << 1);
+* Set the value for MR0 to get desired PWM rate
+* Enable the timer/counter and PWM
-** Suppose CPU = 48,000,000 (48Mhz)
+* Enable PWM output
-** frequency desired = 50   (50Hz)
+* In order to use PWM to control a servo, write values to Match Register of corresponding PWM channel
 === Software Design ===

← Older revision		Revision as of 08:51, 23 May 2013
Line 295:		Line 295:
	[http://www.youtube.com/watch?v=LsHk_ty5q4k Demonstation Video]		[http://www.youtube.com/watch?v=LsHk_ty5q4k Demonstation Video]

		+	=== Project Source Code ===
		+	Send me your zipped source code and I will upload this to SourceForge and link it for you.
		+
		+	== References ==
	=== Acknowledgement ===		=== Acknowledgement ===

← Older revision		Revision as of 08:46, 23 May 2013
Line 295:		Line 295:
	[http://www.youtube.com/watch?v=LsHk_ty5q4k Demonstation Video]		[http://www.youtube.com/watch?v=LsHk_ty5q4k Demonstation Video]

−	~~== References ==~~
	=== Acknowledgement ===		=== Acknowledgement ===