diff --git a/tests/psoc6/hw_ext/i2s.py b/tests/psoc6/hw_ext/i2s.py
index a5809c174d1c0..bc399a2b96995 100644
--- a/tests/psoc6/hw_ext/i2s.py
+++ b/tests/psoc6/hw_ext/i2s.py
@@ -29,6 +29,21 @@
     print("SKIP")
     raise SystemExit
 
+sample_num = 3600
+max_num = 0x80
+sample = bytearray(
+    [0x11, 0x22, 0x33, 0x44, 0x55, 0x66, 0x77, 0x88, 0x99, 0xAA, 0xBB, 0xCC, 0xDD, 0xEE, 0xFF]
+)
+buf = bytearray([0] * sample_num)
+j = 0
+for i in range(sample_num):
+    if i >= (j + 1) * max_num:
+        j = j + 1
+    buf[i] = sample[j % len(sample)]
+
+
+# for i in range(sample_num/max_num - 1):
+#     print(binascii.hexlify(buf[i*max_num: (i + 1)*max_num]))
 
 audio_out = I2S(
     0,
@@ -38,30 +53,47 @@
     mode=I2S.TX,
     bits=32,
     format=I2S.STEREO,
-    rate=8000,
-    ibuf=20000,
-)
-audio_in = I2S(
-    1,
-    sck=sck_rx_pin,
-    ws=ws_rx_pin,
-    sd=sd_rx_pin,
-    mode=I2S.RX,
-    bits=32,
-    format=I2S.STEREO,
-    rate=8000,
+    rate=22050,
     ibuf=20000,
 )
-buf = bytearray([0] * 64)
-for i in range(64):
-    buf[i] = i
+# audio_in = I2S(
+#     1,
+#     sck=sck_rx_pin,
+#     ws=ws_rx_pin,
+#     sd=sd_rx_pin,
+#     mode=I2S.RX,
+#     bits=32,
+#     format=I2S.STEREO,
+#     rate=8000,
+#     ibuf=20000,
+# )
+
+tx_done = False
+
+
+def tx_complete_irq(obj):
+    global tx_done
+    tx_done = True
+    # print("tx completed")
+
+
 # buf = b"\x01\x00\x17\x15\x16\x44"
-print("tx Buffer")
-print(buf)
+# print("tx Buffer")
+# print(buf)
+audio_out.irq(tx_complete_irq)
 num_written = audio_out.write(buf)
-buf1 = bytearray(64)
-num_read = audio_in.readinto(buf1)
-print("Rx Buffer")
-print(buf1)
-audio_out.stop()
-audio_in.stop()
+
+while not tx_done:
+    pass
+
+print("tx completed")
+
+# print(num_written)
+# buf1 = bytearray(64)
+# num_read = audio_in.readinto(buf1)
+# print("Rx Buffer")
+# print(buf1)
+# audio_out.stop()
+# audio_in.stop()
+# time.sleep(5)
+# audio_out.deinit()