speakjet ic with pic

rajm · Joined: 06 Nov 2012 Posts: 29

hi

i got speakjet ic to get voice output. in this text is serially transmitted from controller to ic to speak, but i dont know how to start coding using ccs compiler.. kindly help me to write.

regards

Mike Walne · Joined: 19 Feb 2004 Posts: 1785 Location: Boston Spa UK

Can you post a link to the ic, and quote your compiler version No. & chosen PIC etc.

Please try to make it easy for us to help you.

Mike

ezflyr · Joined: 25 Oct 2010 Posts: 1019 Location: Tewksbury, MA

Hi,

Here is the Users Guide for the Speakjet chip: http://www.sparkfun.com/datasheets/Components/General/speakjet-usermanual.pdf

It appears that simple ASCII commands/data are all that the Speakjet requires, so simple printf statements should make it work. I looked at this synthesized voice solution a while back for a project, but judged the voice quality to be sub-standard, so I went with the 'EMIC' module from Parallax instead, at, albeit, four times the price!

John

rajm · Joined: 06 Nov 2012 Posts: 29

hi
the datasheet for the ic is below link.
https://www.sparkfun.com/datasheets/Components/General/speakjet-usermanual.pdf

I'm using ccs compiler- PCWHD v4.093, my controller is PIC18f4550.

regards

jgschmidt · Joined: 03 Dec 2008 Posts: 184 Location: Gresham, OR USA

Hi,

What is it you're having problems with?

The serial connection to the chip?
What codes to send to get a certain sound?
Connecting to a speaker?

I use a similar chip, the SoundGin/Babblebot, because it's better for making music, but it follows similar principles. I found Arduino libraries that I converted to CCS. The header files were the most useful.

Basic steps I followed were:

1) Make sure the PIC is generating serial output at the desired baud rate. I test with a terminal emulator on my PC. If you use the INVERT option on the #USE RS232 statement, you can go directly into the receive pin without needing a MAX232 or similar chip. Don't forget the ground connection. Pins 2 & 5 respectively on my 9-pin connection. This is just part of my standard debugging setup.

You will find many, many posts here relating to serial comms.

2) Verify the Speakjet is correctly connected to headphones or an amplifier circuit such as a LM386 by wiring up the Demo/Test configuration from the manual.

3) Now connect the transmit pin from the PIC to the Receive pin of the SpeakJet and try sending some simple commands. (Remember to remove the INVERT from the #USE RS232 statement.)

4) If you need help understanding how to perform complex tasks, google speakjet and you'll find lots of resources.

Happy coding...
_________________
Jürgen
www.jgscraft.com