1 files changed, 40 insertions, 0 deletions
diff --git a/fw/fe310/eos/i2s.h b/fw/fe310/eos/i2s.h
new file mode 100644
index 0000000..744958e
--- /dev/null
+++ b/fw/fe310/eos/i2s.h
@@ -0,0 +1,40 @@
+#include <stdint.h>
+
+#define EOS_I2S_FMT_ALAW        0
+#define EOS_I2S_FMT_PCM16       1
+
+/* should match i2s_def.h definitions */
+#define EOS_I2S_ETYPE_MIC       1
+#define EOS_I2S_ETYPE_SPK       2
+
+
+typedef struct EOSABuf {
+    uint16_t idx_r;
+    uint16_t idx_w;
+    uint16_t size;
+    uint8_t *array;
+} EOSABuf;
+
+typedef void (*eos_i2s_handler_t) (unsigned char);
+
+void eos_i2s_init(void);
+void eos_i2s_start(uint32_t sample_rate, unsigned char fmt);
+void eos_i2s_stop(void);
+void eos_i2s_mic_init(uint8_t *mic_arr, uint16_t mic_arr_size);
+void eos_i2s_mic_set_handler(eos_i2s_handler_t wm_handler);
+void eos_i2s_mic_set_wm(uint16_t wm);
+uint16_t eos_i2s_mic_len(void);
+uint16_t eos_i2s_mic_read(uint8_t *sample, uint16_t ssize);
+int eos_i2s_mic_pop8(uint8_t *sample);
+int eos_i2s_mic_pop16(uint16_t *sample);
+int eos_i2s_mic_vol_get(void);
+void eos_i2s_mic_vol_set(int vol);
+void eos_i2s_spk_init(uint8_t *mic_arr, uint16_t mic_arr_size);
+void eos_i2s_spk_set_handler(eos_i2s_handler_t wm_handler);
+void eos_i2s_spk_set_wm(uint16_t wm);
+uint16_t eos_i2s_spk_len(void);
+uint16_t eos_i2s_spk_write(uint8_t *sample, uint16_t ssize);
+int eos_i2s_spk_push8(uint8_t sample);
+int eos_i2s_spk_push16(uint16_t sample);
+int eos_i2s_spk_vol_get(void);
+void eos_i2s_spk_vol_set(int vol);