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Looking at 384khz issues

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This commit is contained in:
Ross Owen
2013-05-10 16:17:40 +01:00
parent e7d23603a4
commit c0398c33fe
1 changed files with 39 additions and 14 deletions
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49
module_usb_audio/audio.xc
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@@ -182,9 +182,9 @@ unsigned deliver(chanend c_out, chanend ?c_spd_out, unsigned divide, chanend ?c_
if(divide == 1) if(divide == 1)
{ {
p_lrclk <: 0 @ tmp; p_lrclk <: 0 @ tmp;
tmp += 30; tmp += 100;
/* Prefill the ports so data starts to be input */ /* Since BCLK is free-running, setup outputs/inputs at a know point in the future */
#if (I2S_CHANS_DAC != 0) #if (I2S_CHANS_DAC != 0)
#pragma loop unroll #pragma loop unroll
for(int i = 0; i < I2S_WIRES_DAC; i++) for(int i = 0; i < I2S_WIRES_DAC; i++)
@@ -197,17 +197,14 @@ unsigned deliver(chanend c_out, chanend ?c_spd_out, unsigned divide, chanend ?c_
#if (I2S_CHANS_ADC != 0) #if (I2S_CHANS_ADC != 0)
p_i2s_adc[0] @ (tmp - 1) :> void; for(int i = 0; i < I2S_WIRES_DAC; i++)
#endif
#if (I2S_CHANS_ADC != 0)
#pragma loop unroll
for(int i = 0; i < I2S_WIRES_ADC; i++)
{ {
//p_i2s_adc[0] @ (tmp - 1) :> void;
asm("setpt res[%0], %1"::"r"(p_i2s_adc[i]),"r"(tmp-1));
clearbuf(p_i2s_adc[i]); clearbuf(p_i2s_adc[i]);
} }
#endif #endif
} }
else else
{ {
@@ -223,8 +220,31 @@ unsigned deliver(chanend c_out, chanend ?c_spd_out, unsigned divide, chanend ?c_
#endif #endif
p_lrclk <: 0x7FFFFFFF; p_lrclk <: 0x7FFFFFFF;
p_bclk <: 0xAAAAAAAA;//32clks switch (divide)
p_bclk <: 0xAAAAAAAA; {
case 8:
p_bclk <: 0xF0F0F0F0;
p_bclk <: 0xF0F0F0F0;
p_bclk <: 0xF0F0F0F0;
p_bclk <: 0xF0F0F0F0;
p_bclk <: 0xF0F0F0F0;
p_bclk <: 0xF0F0F0F0;
p_bclk <: 0xF0F0F0F0;
p_bclk <: 0xF0F0F0F0;
break;
case 4:
p_bclk <: 0xCCCCCCCC;
p_bclk <: 0xCCCCCCCC;
p_bclk <: 0xCCCCCCCC;
p_bclk <: 0xCCCCCCCC;
break;
case 2:
p_bclk <: 0xAAAAAAAA;
p_bclk <: 0xAAAAAAAA;
break;
}
} }
#else #else
/* CODEC is master */ /* CODEC is master */
@@ -371,7 +391,9 @@ unsigned deliver(chanend c_out, chanend ?c_spd_out, unsigned divide, chanend ?c_
p_bclk <: 0xAAAAAAAA; p_bclk <: 0xAAAAAAAA;
break; break;
case 1: case 1:
break; {unsigned xxx = 0;
asm("out res[%0], %1",::"r"(XS1_PORT_8D),"r"(xxx));
}break;
} }
} }
else if(everyOther) else if(everyOther)
@@ -468,6 +490,9 @@ unsigned deliver(chanend c_out, chanend ?c_spd_out, unsigned divide, chanend ?c_
case 1: case 1:
p_lrclk <: 0x80000000; p_lrclk <: 0x80000000;
{unsigned xxx = 0x00;
asm("out res[%0], %1"::"r"(XS1_PORT_8D),"r"(xxx));
}
break; break;
} }
#endif #endif