Forum: µC & Digital Electronics LPC 2129 PWM problem

Author: Anand Bhavikatti (Company: Self) (abhavikatti)
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Hi all

I am working on single edge PWM generation on LPC 2129 .The summary o my 
work is as below

1)I am able to see PWM output on Pin 33(PWM 4).it is as per my clock 
settings.No problem still here.

2)In the PWM ISR,I am setting 2 flags and in the main loop of the code 
,and based on these flag values I am dynamically changing PWM4 rate by 
changing PWMMR0 ;PWMMR4 PWMLER registers.

3)These above mentioned changes are not reflected in the scope output.I 
dont see my modified rate settings on the scope.

Attached is the code.Please help me.


Author: Anand Bhavikatti (Company: Self) (abhavikatti)
Posted on:

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The stuff is working fine. I have to use volatile qualifiers for flags 
used in ISR and in  main loop.


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