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Updates for new S/PDIF receiver

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This commit is contained in:
Ross Owen
2023-09-20 16:14:00 +01:00
parent f970623edf
commit a89df80da8
2 changed files with 21 additions and 34 deletions
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41
lib_xua/src/core/clocking/clockgen.xc
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@@ -219,18 +219,6 @@ static inline int validSamples(Counter &counter, int clockIndex)
}
#endif
#if (XUA_SPDIF_RX_EN)
//:badParity
/* Returns 1 for bad parity, else 0 */
static inline int badParity(unsigned x)
{
unsigned X = (x>>4);
crc32(X, 0, 1);
return X & 1;
}
//:
#endif
#ifdef LEVEL_METER_LEDS
void VendorLedRefresh(unsigned levelData[]);
unsigned g_inputLevelData[NUM_USB_CHAN_IN];
@@ -269,9 +257,10 @@ void clockGen (streaming chanend ?c_spdif_rx, chanend ?c_adat_rx, client interfa
int spdifUnderflow = 1;
int spdifSamps = 0; /* Number of samples in buffer */
Counter spdifCounters;
int spdifReceivedTime;
int spdifRxTime;
unsigned tmp2;
unsigned spdifLeft = 0;
unsigned spdifRxData;
#endif
#if (XUA_ADAT_RX_EN)
@@ -330,7 +319,6 @@ void clockGen (streaming chanend ?c_spdif_rx, chanend ?c_adat_rx, client interfa
adatCounters.samplesPerTick = 0;
#endif
t_local :> timeNextEdge;
timeLastEdge = timeNextEdge;
timeNextClockDetection = timeNextEdge + (LOCAL_CLOCK_INCREMENT / 2);
@@ -521,25 +509,24 @@ void clockGen (streaming chanend ?c_spdif_rx, chanend ?c_adat_rx, client interfa
#endif
#if (XUA_SPDIF_RX_EN)
/* Receive sample from S/PDIF RX thread (steaming chan) */
case c_spdif_rx :> tmp:
/* Receive sample from S/PDIF RX thread (streaming chan) */
case c_spdif_rx :> spdifRxData:
/* Record time of sample */
t_local :> spdifReceivedTime;
t_local :> spdifRxTime;
/* Check parity and ignore if bad */
if(badParity(tmp))
if(spdif_check_parity(tmp))
continue;
/* Get pre-amble */
tmp2 = tmp & 0xF;
switch(tmp2)
/* Get preamble */
unsigned preamble = spdifRxData & SPDIF_RX_PREAMBLE_MASK;
switch(preamble)
{
/* LEFT */
case SPDIF_FRAME_X:
case SPDIF_FRAME_Z:
spdifLeft = tmp << 4;
spdifLeft = SPDIF_RX_EXTRACT_SAMPLE(spdifRxData);
break;
/* RIGHT */
@@ -550,7 +537,7 @@ void clockGen (streaming chanend ?c_spdif_rx, chanend ?c_adat_rx, client interfa
{
/* Store left and right sample pair to buffer */
spdifSamples[spdifWr] = spdifLeft;
spdifSamples[spdifWr+1] = tmp << 4;
spdifSamples[spdifWr+1] = SPDIF_RX_EXTRACT_SAMPLE(spdifRxData);
spdifWr = (spdifWr + 2) & (MAX_SPDIF_SAMPLES - 1);
@@ -586,13 +573,13 @@ void clockGen (streaming chanend ?c_spdif_rx, chanend ?c_adat_rx, client interfa
if((spdifCounters.receivedSamples >= spdifCounters.samplesPerTick))
{
/* Check edge is about right... S/PDIF may have changed freq... */
if(timeafter(spdifReceivedTime, (timeLastEdge + LOCAL_CLOCK_INCREMENT - LOCAL_CLOCK_MARGIN)))
if(timeafter(spdifRxTime, (timeLastEdge + LOCAL_CLOCK_INCREMENT - LOCAL_CLOCK_MARGIN)))
{
/* Record edge time */
timeLastEdge = spdifReceivedTime;
timeLastEdge = spdifRxTime;
/* Setup for next edge */
timeNextEdge = spdifReceivedTime + LOCAL_CLOCK_INCREMENT + LOCAL_CLOCK_MARGIN;
timeNextEdge = spdifRxTime + LOCAL_CLOCK_INCREMENT + LOCAL_CLOCK_MARGIN;
/* Toggle edge */
i_pll_ref.toggle_timed(1);

14
lib_xua/src/core/main.xc
View File

@@ -30,8 +30,8 @@
#include "iap.h"
#endif
#if (XUA_SPDIF_RX_EN)
#include "spdif.h"
#if (XUA_SPDIF_RX_EN || XUA_SPDIF_TX_EN)
#include "spdif.h" /* From lib_spdif */
#endif
#if (XUA_ADAT_RX_EN)
@@ -42,10 +42,6 @@
#include "xua_pdm_mic.h"
#endif
#if (XUA_SPDIF_TX_EN)
#include "spdif.h" /* From lib_spdif */
#endif
#if (XUA_DFU_EN == 1)
[[distributable]]
void DFUHandler(server interface i_dfu i, chanend ?c_user_cmd);
@@ -142,7 +138,11 @@ on stdcore[XUD_TILE] : buffered in port:32 p_adat_rx = PORT_ADAT_IN;
#endif
#if (XUA_SPDIF_RX_EN)
#if (LEGACY_SPDIF_RECEIVER)
on tile[XUD_TILE] : in port p_spdif_rx = PORT_SPDIF_IN;
#else
on tile[XUD_TILE] : buffered in port:32 p_spdif_rx = PORT_SPDIF_IN;
#endif
#endif
#if (XUA_SPDIF_RX_EN) || (XUA_ADAT_RX_EN) || (XUA_SYNCMODE == XUA_SYNCMODE_SYNC)
@@ -643,7 +643,7 @@ int main()
on tile[XUD_TILE]:
{
thread_speed();
spdif_rx(c_spdif_rx,p_spdif_rx,clk_spd_rx,192000);
spdif_rx(c_spdif_rx, p_spdif_rx, clk_spd_rx, 192000);
}
#endif