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Change version of lib_mic_array; Fix synchronous endpoint behaviour

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The device now adjusts it's clock to the USB clock when host is not
pushing data to device.
This commit is contained in:
Oscar Bailey
2019-02-26 16:59:29 +00:00
parent a8fa274230
commit 86b4ab89ea
8 changed files with 62 additions and 18 deletions
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8
examples/xua_lite_example/src/audio_hub.xc
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@@ -1,3 +1,4 @@
#include <string.h>
#include "i2s.h"
#include "i2c.h"
#include "xua.h"
@@ -34,6 +35,8 @@ void AudioHub(server i2s_frame_callback_if i2s,
mic_array_decimator_configure(c_ds_output, decimatorCount, dc);
mic_array_init_time_domain_frame(c_ds_output, decimatorCount, buffer, mic_audio_frame, dc);
// Used for debug
//int saw = 0;
while (1) {
select {
@@ -57,7 +60,7 @@ void AudioHub(server i2s_frame_callback_if i2s,
case i2s.restart_check() -> i2s_restart_t restart:
restart = I2S_NO_RESTART; // Keep on looping
timer tmr; int t0, t1; tmr :> t0;
//Transfer samples. Takes about 25 ticks
for (int i = 0; i < NUM_USB_CHAN_OUT; i++) c_audio :> samples_out[i];
if (XUA_ADAPTIVE) c_audio :> clock_nudge;
@@ -70,6 +73,9 @@ void AudioHub(server i2s_frame_callback_if i2s,
for (int i = 0; i < XUA_NUM_PDM_MICS; i++) raw_mics[i] = current->data[i][0];
}
//memset(raw_mics, saw, sizeof(int) * XUA_NUM_PDM_MICS);
//saw += 500;
//Taking about 160 ticks when adjusting, 100 when not
tmr :> t0;
pll_nudge(clock_nudge);