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modified on 12 April 2012 at 20:16 ••• 20,275 views

Lincoln Timer to Generate a PWM

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(Compatibility Lincoln 60, Lincoln 60E)
(Compatibility Lincoln 60, Lincoln 60E)
 
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==Compatibility [http://www.micromint.com/index.php/SBC/lincoln60.html Lincoln 60], [http://www.micromint.com/index.php/SBC/lincoln60.html Lincoln 60E]==
==Compatibility [http://www.micromint.com/index.php/SBC/lincoln60.html Lincoln 60], [http://www.micromint.com/index.php/SBC/lincoln60.html Lincoln 60E]==
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This example demonstrates how to use timers to generate PWM signals with different duty cycles. Run the example and observe the 4 signals using an oscilloscope.  
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This example demonstrates how to use timers to generate PWM signals with different duty cycles. Run the example and observe the 4 signals using an oscilloscope. Below is a list of the signals and what duty cycle they should be at:
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Below is a list of the signals and what duty cycle they should be at:
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* P1.28 on J2 pin 19: duty cycle = 12.5%
* P1.28 on J2 pin 19: duty cycle = 12.5%
* P1.22 on J2 pin 13: duty cycle = 25%
* P1.22 on J2 pin 13: duty cycle = 25%

Current revision as of 20:16, 12 April 2012

Compatibility Lincoln 60, Lincoln 60E

This example demonstrates how to use timers to generate PWM signals with different duty cycles. Run the example and observe the 4 signals using an oscilloscope. Below is a list of the signals and what duty cycle they should be at:

  • P1.28 on J2 pin 19: duty cycle = 12.5%
  • P1.22 on J2 pin 13: duty cycle = 25%
  • P0.6 on J2 pin 5: duty cycle = 37.5%
  • P0.10 on J2 pin 9: duty cycle = 50%

The first UART, which is connected to the COM1 on the Lincoln microcontroller board, is configured for 115,200 bits per second, and 8-n-1 mode. When the program is started a message will be printed to the terminal. The below screen shot is of the timer_pwmsignal in action.



Below is a screen capture of the signals on P1.28 (J2 pin 19) and P1.22 (J2 pin 13).



Below is a screen capture of the signals on P0.6 (J2 pin 5) and P0.10 (J2 pin 9).