18f4520 PWM

[colourwheel]

i am a beginner and i hope to find out how PWM works. How it produce sounds or duty cycle. hope someone can help me with the programm thanks.

[BLAH_BLAH]

1) search the forum
2) look at the ex_pwm.c file in your examples directory
3) read the manual
4) read the datasheet
5) try writing the code. If it doesn't work, post your (very simple) code and ask specific questions.

1-4 aren't necessarily in the correct order, but 5 should be the last step you try!

[PCM programmer]

See this post for a demo program:
http://www.ccsinfo.com/forum/viewtopic.php?t=17729&start=1

[colourwheel]

mine is pic18f4520 issit the same as the link u post there?
i need to produce a fire engine sound, is that possible? any sample programm?

[colourwheel]

#include<p18f4520.h>
void main()
{
TRISC=0b11111011;
T2CON=0b00000101;
PR2=249;
CCPR1L=0B1111101;
CCP1COB=0B00001111;
while(1)
}

i only have sounds coming out but it does no sound like a fire engine sound? how do i edit it to make it sound more like it?

[PCM programmer]

You should always tell us your overall purpose in your first post.
Put it in the title of your post.
Your purpose is to make music or play a simple tune with the PIC.

CCS has an example file for this. It's in this directory:

[colourwheel]

ok nex time i know what to put for the title and thanks for the help!!