- I do not know how to write a timer function in C to sample the wave file
from the EEPROM at 8KHz to the DAC.
- The PIC18F452 and both I2c devices have a frquecy of 400KHz.
- As the DAC (MAX517) does not have a clk input to allow me to sample the
data at 8KHz to the amplifier, therefore I need to write a PIC-C timer
function.
- Is there any sample source code for timer function for me to follow for
MPlab C18 complier?

Thank you.


----- Original Message -----
From: <piclist@XARGS.COM>
To: <PICLIST@MITVMA.MIT.EDU>
Sent: Sunday, March 07, 2004 2:53 AM
Subject: Re: [PIC]:How to write timer function for PIC18F452?


> On Sun, 7 Mar 2004, Nicholas wrote:
>
> > I am using PIC18F452 Chip with two I2C devices (EEPROM + DAC). My
> wave file in the EEPROM has a sampling rate at 8KHz, 8bits. I need to
> send the wave file byte by byte from the EEPROM to the DAC. Can
> someone teach me how to write a timer function to sampling my wave
> file from 400KHz to 8KHz using PIC C language with MPlab C18 complier?
>
> What is it that you're having difficulty with?  How to configure a
> timer to interrupt every 125 microseconds?  What is the 400kHz?  Your
> I2C bus speed?
>
> --
> John W. Temples, III
>
> --
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