04-07 OrangesAndLemons - Revision history

Support at 19:13, 17 September 2014

Support — Wed, 17 Sep 2014 19:13:06 GMT

← Older revision		Revision as of 19:13, 17 September 2014
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	This example uses a PWM to play the tune "Oranges and Lemons" on a piezo buzzer using a PWM.		This example uses a PWM to play the tune "Oranges and Lemons" on a piezo buzzer using a PWM.
		+
	The signals used for this example are listed below:		The signals used for this example are listed below:
	{\| border="1" cellpadding="5" cellspacing="2" align="center" style="text-align: center;"		{\| border="1" cellpadding="5" cellspacing="2" align="center" style="text-align: center;"
-	\|+ align="bottom"\|'''Signals Used and Connector Locations for Example 04-06'''	+	\|+ align="bottom"\|'''Signals Used and Connector Locations for Example 04-07'''
	\|'''Signal'''		\|'''Signal'''
	\|'''LPC4330 PIN NAME'''		\|'''LPC4330 PIN NAME'''

Support at 19:10, 17 September 2014

Support — Wed, 17 Sep 2014 19:10:26 GMT

← Older revision		Revision as of 19:10, 17 September 2014
Line 1:		Line 1:
	This example uses a PWM to play the tune "Oranges and Lemons" on a piezo buzzer using a PWM.		This example uses a PWM to play the tune "Oranges and Lemons" on a piezo buzzer using a PWM.
		+	The signals used for this example are listed below:
		+	{\| border="1" cellpadding="5" cellspacing="2" align="center" style="text-align: center;"
		+	\|+ align="bottom"\|'''Signals Used and Connector Locations for Example 04-06'''
		+	\|'''Signal'''
		+	\|'''LPC4330 PIN NAME'''
		+	\|'''BAM210E'''
		+	\|'''BAM210'''
		+	\|'''BAM200E'''
		+	\|'''BAM200'''
		+	\|'''Used for'''
		+	\|-
		+	\|PWM1
		+	\|P1_7
		+	\|J9-3
		+	\|J9-3
		+	\|S2-3
		+	\|S2-3
		+	\|Buzzer
		+	\|-
		+	\|}

		+	The following schematic can be used to build the circuit with a BAM210E or BAM210.
		+	[[Image:BAM210_04_07_SCH.png\|center\|alt=BAM210\|frame\|<div align="center">'''Schematic for example 04-07''']]
		+
		+	<div style="text-align: left;">
	/*Program Example 4.7: Plays the tune "Oranges and Lemons" on a piezo buzzer, using PWM		/*Program Example 4.7: Plays the tune "Oranges and Lemons" on a piezo buzzer, using PWM
	*/		*/
Line 21:		Line 45:
	}		}

		+	The following image shows the built circuit on a BAM210E.
	[[Image:BAM210_OangesAndLemons.jpeg\|center\|]]		[[Image:BAM210_OangesAndLemons.jpeg\|center\|]]
-
-
-
-	~~[[Image:BAM210_04_07_SCH.png\|center\|alt=BAM210\|frame\|<div align="center">'''Schematic for example 04-07''']]~~

Support at 15:16, 14 August 2014

Support — Thu, 14 Aug 2014 15:16:55 GMT

← Older revision		Revision as of 15:16, 14 August 2014
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	#include "mbed.h"		#include "mbed.h"
	PwmOut buzzer(PWM1);		PwmOut buzzer(PWM1);
-		+
	//frequency array		//frequency array
	float frequency[]= {659,554,659,554,440,494,554,587,494,659,554,440};		float frequency[]= {659,554,659,554,440,494,554,587,494,659,554,440};

Support: Created page with 'This example uses a PWM to play the tune "Oranges and Lemons" on a piezo buzzer using a PWM. /*Program Example 4.7: Plays the tune "Oranges and Lemons" on a piezo buzzer, using…'

Support — Thu, 14 Aug 2014 15:16:44 GMT

Created page with 'This example uses a PWM to play the tune "Oranges and Lemons" on a piezo buzzer using a PWM. /*Program Example 4.7: Plays the tune "Oranges and Lemons" on a piezo buzzer, using…'

New page

This example uses a PWM to play the tune "Oranges and Lemons" on a piezo buzzer using a PWM.

/*Program Example 4.7: Plays the tune "Oranges and Lemons" on a piezo buzzer, using PWM
*/
#include "mbed.h"
PwmOut buzzer(PWM1);

//frequency array
float frequency[]= {659,554,659,554,440,494,554,587,494,659,554,440};
float beat[]= {1,1,1,1,1,0.5,0.5,1,1,1,1,2}; //beat array

int main()
{
while (1) {
for (int i=0; i<=11; i++) {
buzzer.period(1/(2*frequency[i])); // set PWM period
buzzer=0.5; // set duty cycle
wait(0.4f*beat[i]); // hold for beat period
}
}
}

[[Image:BAM210_OangesAndLemons.jpeg|center|]]

[[Image:BAM210_04_07_SCH.png|center|alt=BAM210|frame|<div align="center">'''Schematic for example 04-07''']]