LED bar graph audio level with peak hold fall down effect.

[Jestin_cubetech]

how to make a peak hold fall down effect using c language.

peak hold fall down effect

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peak hold fall down effect sample video

 

[kam1787]

Where is the C code?

 

[Venkadesh_M]

You have to OR the output with another variable which holds the peak value as LSB to MSB values..

 

[Jestin_cubetech]

that is the question.
how to make a peak hold fall down effect using c language.

hardware: 10 level LED graph,atmega32
a simple peak level indicator in c language is easy,just read ADC and plot the maximum value.
then, how to make a peak hold fall down effect .

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You have to OR the output with another variable which holds the peak value as LSB to MSB values..

what about a slow fall down effect ?

 

[Venkadesh_M]

If you already have the code for other operations then post it I think i can modify

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----------------------- LOGIC -----------------------

Run a background timer of (say) .25 sec, that will give interrupt for every 0.25 sec..

after that there will be the variable which will decrement(shift) for every interrupt and also load the value of ordinary peak detector if it is more than the new variable..

in while do as i already said...

 

[Jestin_cubetech]

https://www.edaboard.com/threads/297666/#post1273308

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thanks your replay

 

[jayanth.devarayanadurga]

If the peak bit of led bargraph is ON then insert a delay of 500 ms using timer. Can you post the Proteus file?

 

[Jestin_cubetech]

atmega-32 single bar graph LED Proteus File

 

[Venkadesh_M]

atmega-32 single bar graph LED Proteus File

How did you do that (fall down effect).. If you post that portion here, it will be helpful to others............

 

[Jestin_cubetech]

If you already have the code for other operations then post it I think i can modify

- - - Updated - - -

----------------------- LOGIC -----------------------

Run a background timer of (say) .25 sec, that will give interrupt for every 0.25 sec..

after that there will be the variable which will decrement(shift) for every interrupt and also load the value of ordinary peak detector if it is more than the new variable..

in while do as i already said...

i follow the similar logic without timer.