Looking for usbstk5505.h's references...

Hi Andrea,

On my system, the header file usbstk5505.h is located at C:\Program Files\Texas Instruments\ccsv4\emulation\boards\usbstk5505\include. The directory usbstk5505 has all the files associated withe the usbstk5505. The manufacturer, Spectrum Digital, has a great deal of information on the usbstk5505.

Lee

Hi Andrea,

If you are interested in the functions referenced by the prototypes, they are located on my system at C:\Program Files\Texas Instruments\ccsv4\emulation\boards\usbstk5505\lib\bsl. They are usbstk5505.c, usbstk5505_gpio.c, usbstk5505_i2c.c, and usbstk5505_led.c.

Lee

One thing to note when stepping through the process that the program uses to setup and output the 1kHz audio signal is that in the

AIC3204 Tone_Headphone.c

There is an error in the documentation at Line 40

It shows

AIC3204_rset( 0, 0 );      // Select page 1

However the code is really selecting page 0 as the next page for the read/write register commands.

Essentially the program uses AIC3204_rset function to talk over the I2C bus.

The first AIC3204_rset calls

AIC3204_rset( 0, 0 );

This tells the AIC3204 that the next AIC3204_rset function is setting registers in Page 0. There are 38 pages of 8-bit registers with up to 128 registers in each page. The first register in all of the pages is the page select register.

Example if you wanted to set Register 16 in Page 1 after a reset or writing to another page you would use

AIC3204_rset( 0, 1 );             // Select Page 1

AIC3204_rset(16, 0x3a)         // Unmute HPL , -6dB gain

Another Item to note is that the code switches between decimal and hex values for calling the register numbers.

I found that almost all of the info I needed to follow along with the CODEC setup was in

http://focus.ti.com/lit/ds/slos602a/slos602a.pdf