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Read in samples from channels in one go #9

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Read in samples from channels in one go #9

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27 changes: 14 additions & 13 deletions module_adat_tx/src/adat_tx_port.xc
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Original file line number Diff line number Diff line change
Expand Up @@ -42,10 +42,14 @@ void adat_transmit_port_until_ct_4x(chanend c_data, buffered out port:32 p_data,
case 2:
case 4: start = 0b11110000000000001111111100000000; break;
}
while (!testct(c_data)) {
while (1) {
unsigned w[8];

#ifdef ADAT_TX_USE_SHARED_BUFF
if (testct(c_data)) {
return;
}

unsafe
{
/* Receive pointer to sample buffer over channel */
Expand All @@ -59,8 +63,13 @@ void adat_transmit_port_until_ct_4x(chanend c_data, buffered out port:32 p_data,
outuint(c_data, 0);
}
#else
w[0] = inuint(c_data);
w[1] = inuint(c_data);
#pragma loop unroll
for (int i = 0; i < 8; i++) {
if (testct(c_data)) {
return;
}
w[i] = inuint(c_data);
}
#endif

if (last_lookup & 0x80) {
Expand All @@ -76,16 +85,8 @@ void adat_transmit_port_until_ct_4x(chanend c_data, buffered out port:32 p_data,

// output 8 times three 10-bit chunks - each lookup is 40 bits (4x oversampling)
#pragma loop unroll
for (int i = 0; i < 8; i++) {
#ifndef ADAT_TX_USE_SHARED_BUFF
if (i == 2 || i == 4 || i == 6) {
if (testct(c_data)) {
return;
}
w[i] = inuint(c_data);
w[i + 1] = inuint(c_data);
}
#endif
for (int i = 0; i < 8; i++)
{
#pragma loop unroll
for (int j = 24; j >= 8; j -= 8) {
if (last_lookup & 0x80) {
Expand Down