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Ross Owen
2016-02-09 19:12:04 +00:00
parent 75815a0da6
commit 967ac89420
1 changed files with 2 additions and 8 deletions
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10
module_usb_audio/audio.xc
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@@ -106,12 +106,6 @@ extern void device_reboot(void);
#define MAX_DIVIDE (MAX_DIVIDE_48) #define MAX_DIVIDE (MAX_DIVIDE_48)
#endif #endif
/* Useful for correcting a difference in sample clock polarity between DAC and ADC */
#ifndef I2S_ADC_TO_DAC_SAMP_OFFSET
#define I2S_ADC_TO_DAC_SAMP_OFFSET 0
#endif
#ifndef CODEC_MASTER #ifndef CODEC_MASTER
static inline void doI2SClocks(unsigned divide) static inline void doI2SClocks(unsigned divide)
{ {
@@ -662,7 +656,7 @@ unsigned static deliver(chanend c_out, chanend ?c_spd_out,
/* Output "even" channel to DAC (i.e. left) */ /* Output "even" channel to DAC (i.e. left) */
for(int i = 0; i < I2S_CHANS_DAC; i+=I2S_CHANS_PER_FRAME) for(int i = 0; i < I2S_CHANS_DAC; i+=I2S_CHANS_PER_FRAME)
{ {
p_i2s_dac[index++] <: bitrev(samplesOut[((frameCount+I2S_ADC_TO_DAC_SAMP_OFFSET)&(I2S_CHANS_PER_FRAME-1))+i]); p_i2s_dac[index++] <: bitrev(samplesOut[frameCount +i]);
} }
#endif #endif
@@ -767,7 +761,7 @@ unsigned static deliver(chanend c_out, chanend ?c_spd_out,
#pragma loop unroll #pragma loop unroll
for(int i = 1; i < I2S_CHANS_DAC; i+=I2S_CHANS_PER_FRAME) for(int i = 1; i < I2S_CHANS_DAC; i+=I2S_CHANS_PER_FRAME)
{ {
p_i2s_dac[index++] <: bitrev(samplesOut[(frameCount+i+I2S_ADC_TO_DAC_SAMP_OFFSET)&(I2S_CHANS_PER_FRAME-1)]); p_i2s_dac[index++] <: bitrev(samplesOut[frameCount + i]);
} }
#endif #endif