Refactor: Separate XUA lite and app code

examples/xua_lite_example/config/xua_conf.h

@@ -0,0 +1,41 @@
+// Copyright (c) 2017-2018, XMOS Ltd, All rights reserved
+
+#ifndef _XUA_CONF_H_
+#define _XUA_CONF_H_
+
+#define NUM_USB_CHAN_OUT      2     /* Number of channels from host to device */
+#define NUM_USB_CHAN_IN       2     /* Number of channels from device to host */
+#define I2S_CHANS_DAC         2     /* Number of I2S channels out of xCORE */
+#define I2S_CHANS_ADC         2     /* Number of I2S channels in to xCORE */
+#define MCLK_441  (512 * 44100)     /* 44.1kHz family master clock frequency */
+#define MCLK_48   (512 * 48000)     /* 48kHz family master clock frequency */
+#define MIN_FREQ  48000             /* Minimum sample rate */
+#define MAX_FREQ  48000             /* Maximum sample rate */
+
+#define EXCLUDE_USB_AUDIO_MAIN
+
+#define VENDOR_STR            "XMOS"
+#define VENDOR_ID             0x20B1
+#define PRODUCT_STR_A2        "XUA Lite Class 2"
+#define PRODUCT_STR_A1        "XUA Lite Class 1"
+#define PID_AUDIO_1           1
+#define PID_AUDIO_2           2
+#define XUA_DFU_EN            0      /* Disable DFU (for simplicity of example) */
+
+#define INPUT_FORMAT_COUNT    1
+#define STREAM_FORMAT_INPUT_1_RESOLUTION_BITS     16
+#define OUTPUT_FORMAT_COUNT   1
+#define STREAM_FORMAT_OUTPUT_1_RESOLUTION_BITS    16
+
+#define OUTPUT_VOLUME_CONTROL 0
+#define INPUT_VOLUME_CONTROL  0
+
+#define UAC_FORCE_FEEDBACK_EP 0
+#define XUA_ADAPTIVE          1
+#define XUA_LITE              1       // Use simple/optimised USB buffer tasks
+#define AUDIO_CLASS           1
+
+#define XUA_NUM_PDM_MICS      4       // It's actually 2 but we run 4ch and ignore 2
+#define PDM_MAX_DECIMATION    (96000/(MIN_FREQ))
+
+#endif