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add API to set I2S sampling rate.

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git-svn-id: file:///Users/lillianskinner/Downloads/platinum/twl/twl_wrapsdk/trunk@84 4ee2a332-4b2b-5046-8439-1ba90f034370
This commit is contained in:
yutaka 2007-05-25 09:26:10 +00:00
parent 0789a26744
commit b3f9ded42a
1 changed files with 31 additions and 6 deletions
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37
build/libraries/snd/ARM7/snd_i2s.c
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@ -41,6 +41,10 @@ static void SNDi_I2SInit(void)
if (isInitialized == FALSE)
{
isInitialized = TRUE;
if ((reg_CFG_CLK & REG_CFG_CLK_SND_MASK) == 0)
{
CDC_Init();
}
reg_SND_POWCNT |= REG_SND_POWCNT_SPE_MASK;
reg_CFG_TWL_EX |= REG_CFG_TWL_EX_I2S_MASK;
if (reg_CFG_TWL_EX & REG_CFG_TWL_EX_I2S_MASK)
@ -71,10 +75,6 @@ void SND_I2SEnable(void)
if (isTwl)
{
if ((reg_CFG_CLK & REG_CFG_CLK_SND_MASK) == 0)
{
CDC_Init();
}
reg_SND_I2SCNT |= REG_SND_I2SCNT_E_MASK;
}
}
@ -170,10 +170,11 @@ void SND_I2SMute(BOOL isMute)
/*---------------------------------------------------------------------------*
Name: SND_I2SSetMixingRatio
Description: Set output selector
Description: Set mixing ratio
Arguments: nitroRatio : NITRO / (NITRO + DSP) ratio. (0-8)
Arguments: nitroRatio : NITRO : DSP ratio. (0-8)
if 8, nitro sound is all.
if 0, DSP sound is all.
Returns: None
*---------------------------------------------------------------------------*/
@ -189,4 +190,28 @@ void SND_I2SSetMixingRatio(int nitroRatio)
}
}
/*---------------------------------------------------------------------------*
Name: SND_I2SSetSamplingRatio
Description: Set I2S sampling ratio
Arguments: is47kHz : set 48 kHz if TRUE. set 32kHz if FALSE.
Returns: None
*---------------------------------------------------------------------------*/
void SND_I2SSetSamplingRatio(BOOL is47kHz)
{
if (isTwl)
{
if (is47kHz)
{
reg_SND_I2SCNT |= REG_SND_I2SCNT_CODEC_SMP_MASK;
}
else
{
reg_SND_I2SCNT &= ~REG_SND_I2SCNT_CODEC_SMP_MASK;
}
}
}
/*====== End of snd_i2s.c ======*/