TLV320AIC3254 Reg Write problems

Hi Luis Fernando,

Thanks for your help.  I read values written into the write function, with the next code:

//******************************************************************************
//
// Writes to specfied register
// ulRegAddr - Register Address
// ucRegValue - 8 bit Register Value
//
//******************************************************************************
static unsigned long AudioCodecRegWrite(unsigned char ulRegAddr,unsigned char ucRegValue)
{
    unsigned char ucData[2];
    ucData[0] = (unsigned char)ulRegAddr;
    ucData[1] = ucRegValue;
    val[1]=ucData[1];
#if 0
    if(I2C_IF_ReadFrom(0x44,&ucRegAddr, 1, &ucRegData[0], 2) != 0)
        return -1;
#endif
    J=I2C_IF_Write(CODEC_I2C_SLAVE_ADDR, ucData, 2, 1);
    if(J !=0)
        return (1U<<31);
    MAP_UtilsDelay(27000);

    J=I2C_IF_ReadFrom(CODEC_I2C_SLAVE_ADDR, &ucData[0], 1,&val[0],1);
    if(J !=0)
        return (1U<<31);

    if(val[0] != val[1])
        ++I;

    LOG_MSG("[AudioCodecRegWrite] Reg %.2x\r\n",ucData[0]);
    LOG_MSG("[AudioCodecRegWrite] Desired value = %.2x\r\n",val[1]);
    LOG_MSG("[AudioCodecRegWrite] Written value = %.2x\r\n\r\n",val[0]);
	LOG_FLUSH();

    return 0;
}

As you have said, in the reserved registers the read value is unexpected, but there are other registers (that are not reserved), where the read value is different to the write value (like 4th, 5th or 6th register in Page 0, this is MDAC and DAC OSR registers).

On the other hand betwen write and read operations, the function wait (MAP_UtilsDelay(27000)) without check any flag. Why? There will be some register flag to replace this active waiting?

Hi, Dav,

Could you post this question on the SimpleLink™ WiFi CC31xx/CC32xx Forum? They may help you with your questions about your write function. 

Please let me know if you have specific questions about the audio converters. I will be glad to help you.

Best regards,
Luis Fernando Rodríguez S.