storing a wave file on the rom flash of mcu - Electronic Circuits Projects Diagrams Free

kasser · 26th December 2007, 09:43 AM

I have a wave file on my computer , its time is 3 seconds , I want to stroe it in the flas of microcontroller.
pls how can I do that .

**3v0** · 26th December 2007, 12:26 PM

Not an easy thing to do.

PICs do not have the hardware to play wave files.
They may or may not have enough PIC flash mem to store the file.

What exactly are you wanting to do.

**Nigel Goodwin** · 26th December 2007, 12:55 PM

EPE did a project the other year, it plays WAV files back from an external EEPROM - it was called 'Halloween Howler'.

bananasiong · 26th December 2007, 04:44 PM

Perhaps Roman Black's BTcSE11 can help?
http://www.romanblack.com/picsound.htm

Peter_wadley · 11th January 2008, 06:57 AM

can some one provide the algorithm for playing the output of Roman Black's Program?

I mean.. it gives you the frequency at which the bits should be read.. and it gives you the bits in blocks of eight.. erm bytes..

But how do you continiously cycle through all the bits??

I really really really really .. like alot of people here... want to add sound to my projects..

can anyone solve this one?

blueroomelectronics · 11th January 2008, 04:53 PM

The 18F have a table read command that would be handy for reading a large table right out of Flash memory. You could write a fancy 16F program that sorts out using large tables when using "retlw" else you'll need an external EEPROM.

Peter_wadley · 15th January 2008, 07:39 AM

Some of you might find this to be a pretty good watch

http://www.youtube.com/watch?v=DYIy5YnvymI

(Happy birthday song on a MCU)

Pommie · 15th January 2008, 08:09 AM

Quote:

Originally Posted by blueroomelectronics

The 18F have a table read command that would be handy for reading a large table right out of Flash memory. You could write a fancy 16F program that sorts out using large tables when using "retlw" else you'll need an external EEPROM.

Many of the newer 16F series have read and write to flash which is very similar to the table read command on the 18F. I think the problem with the 16 series would be lack of available flash.

Mike.

blueroomelectronics · 15th January 2008, 04:21 PM

Quote:

Originally Posted by Pommie

Many of the newer 16F series have read and write to flash which is very similar to the table read command on the 18F. I think the problem with the 16 series would be lack of available flash.

Mike.

Also the 18F can store two bytes per word, the 16F one byte per 14bits unless you're writing some pretty fancy software.

Pommie · 15th January 2008, 04:30 PM

Quote:

Originally Posted by blueroomelectronics

Also the 18F can store two bytes per word, the 16F one byte per 14bits unless you're writing some pretty fancy software.

I normally store 2 ascii characters per location. If I was storing a wav file then I think I would store 2 x 7 bit samples per location.

Mike.

blueroomelectronics · 15th January 2008, 04:49 PM

doh, brilliant.

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26th December 2007, 09:43 AM	(permalink)
kasser	storing a wave file on the rom flash of mcu I have a wave file on my computer , its time is 3 seconds , I want to stroe it in the flas of microcontroller. pls how can I do that .

26th December 2007, 12:26 PM	(permalink)
3v0	Not an easy thing to do. PICs do not have the hardware to play wave files. They may or may not have enough PIC flash mem to store the file. What exactly are you wanting to do.

26th December 2007, 12:55 PM	(permalink)
Nigel Goodwin	EPE did a project the other year, it plays WAV files back from an external EEPROM - it was called 'Halloween Howler'. __________________ PIC programmer software, and PIC Tutorials at: http://www.winpicprog.co.uk

26th December 2007, 04:44 PM	(permalink)
bananasiong	Perhaps Roman Black's BTcSE11 can help? http://www.romanblack.com/picsound.htm __________________ Superman returns..

11th January 2008, 06:57 AM	(permalink)
Peter_wadley	can some one provide the algorithm for playing the output of Roman Black's Program? I mean.. it gives you the frequency at which the bits should be read.. and it gives you the bits in blocks of eight.. erm bytes.. But how do you continiously cycle through all the bits?? I really really really really .. like alot of people here... want to add sound to my projects.. can anyone solve this one? __________________ "Stick around" - Arnold Schwarzenegger in The Predator after impaling a soldier to a wood post 9vDC Guitar Pedal PSU PIC16F84a Game Module

11th January 2008, 04:53 PM	(permalink)
blueroomelectronics	The 18F have a table read command that would be handy for reading a large table right out of Flash memory. You could write a fancy 16F program that sorts out using large tables when using "retlw" else you'll need an external EEPROM. __________________ Bill Smart Kits build Smart People http://www.blueroomelectronics.com

15th January 2008, 07:39 AM	(permalink)
Peter_wadley	Some of you might find this to be a pretty good watch http://www.youtube.com/watch?v=DYIy5YnvymI (Happy birthday song on a MCU) __________________ "Stick around" - Arnold Schwarzenegger in The Predator after impaling a soldier to a wood post 9vDC Guitar Pedal PSU PIC16F84a Game Module

15th January 2008, 04:49 PM	(permalink)
blueroomelectronics	doh, brilliant. __________________ Bill Smart Kits build Smart People http://www.blueroomelectronics.com