STA015_10 datasheet(51/56 Pages) STMICROELECTRONICS

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STA015

6.5 STA015 CONFIGURATION FILE FORMAT

The STA015 Configuration File is an ASCII format. An example of the file format is the following:

58 1

42 4

128 15

............

It is a sequence of rows and each one can be interpreted as an I2C command. The first part of the row is

the I2C address (register) and the second one is the I2C data (value). To download the STA015 configu-

ration file into the device, a sequence of write operation to STA015 I2C interface must be performed.

The following program describes the I2C routine to be implemented for the configuration driver:

STA015 Configuration Code (pseudo code)

download cfg - file

{

fopen (cfg_file);

fp:=1;

/*set file pointer to first row */

do {

I2C_start_cond;

/* generate I2C start condition for STA015 device address */

I2C_write_dev_addr;

/* write STA015 device address

I2C_write_subaddress (fp); /* write subaddress

I2C_write_data (fp);

/* write data

I2C_stop_cond;

/* generate I2C stop condition

fp++;

/* update pointer to new file row

}

while (!EDF)

/* repeat until End of File

}

/* End routine

Note: 1. STA015 is a device based on an integrated DSP core. Some of the I2C registers default values are loaded after an internal DSP

boot operation. The bootstrap time is 60 micro second. Only after this time lenght, the data in the register can be considered stable

2. Refer also to the application note AN1250

2C REGISTER VALUE

2C SUB-ADDRESS

D98AU976

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