From 5968b4934dce9ec5a12ceb12885bb2ce824d2cbf Mon Sep 17 00:00:00 2001
From: Adolfo Reyna <aeroreyna@gmail.com>
Date: Wed, 17 Jun 2026 23:15:22 -0400
Subject: [PATCH] Configure demo_audio_loopback.py to record for a fixed
 10-second duration to eliminate button-release checking from loop

---
 demo_audio_loopback.py | 29 ++++++++++++++---------------
 1 file changed, 14 insertions(+), 15 deletions(-)

diff --git a/demo_audio_loopback.py b/demo_audio_loopback.py
index 755f3bb..ce3b0ff 100644
--- a/demo_audio_loopback.py
+++ b/demo_audio_loopback.py
@@ -79,14 +79,14 @@ def main():
             if board_config.BOARD_TYPE == 'WAVESHARE_RLCD':
                 display.text("RLCD Audio Loopback Test", 10, 10, 1)
                 display.line(10, 20, 390, 20, 1)
-                display.text("1. Press & HOLD KEY button to record", 15, 60, 1)
-                display.text("2. Release key to play back", 15, 80, 1)
+                display.text("1. Press KEY button to record 10s", 15, 60, 1)
+                display.text("2. Playback will start automatically", 15, 80, 1)
                 display.text("Ready...", 15, 120, 1)
             else:
                 display.text("Touch Audio Loopback Test", 10, 10, 1)
                 display.line(10, 20, 310, 20, 1)
-                display.text("1. Press & HOLD screen/KEY to record", 10, 50, 1)
-                display.text("2. Release to play back", 10, 70, 1)
+                display.text("1. Press screen/KEY to record 10s", 10, 50, 1)
+                display.text("2. Playback starts automatically", 10, 70, 1)
                 display.text("Ready...", 10, 100, 1)
             display.show()
             
@@ -120,13 +120,13 @@ def main():
             if board_config.BOARD_TYPE == 'WAVESHARE_RLCD':
                 display.text("RLCD Audio Loopback Test", 10, 10, 1)
                 display.line(10, 20, 390, 20, 1)
-                display.text("RECORDING NOW!", 15, 80, 1)
-                display.text("Keep holding key...", 15, 100, 1)
+                display.text("RECORDING: 10 seconds...", 15, 80, 1)
+                display.text("Speak into microphone!", 15, 100, 1)
             else:
                 display.text("Touch Audio Loopback Test", 10, 10, 1)
                 display.line(10, 20, 310, 20, 1)
-                display.text("RECORDING NOW!", 10, 60, 1)
-                display.text("Keep holding trigger...", 10, 80, 1)
+                display.text("RECORDING: 10 seconds...", 10, 60, 1)
+                display.text("Speak now!", 10, 80, 1)
             display.show()
             
         # We record as long as the button is pressed (or up to 10 seconds max)
@@ -168,14 +168,13 @@ def main():
                     pass
                     
         # Record loop
-        buffer = bytearray(2048)
+        buffer = bytearray(1024)
         total_bytes = 0
-        start_time = time.ticks_ms()
-        max_duration_ms = 10000 # 10 seconds limit
+        start_rec_time = time.time()
         
         try:
             with open(filename, 'wb') as f:
-                while is_talk_trigger_active() and time.ticks_diff(time.ticks_ms(), start_time) < max_duration_ms:
+                while (time.time() - start_rec_time) < 10:
                     bytes_read = i2s_rx.readinto(buffer)
                     if bytes_read > 0:
                         f.write(buffer[:bytes_read])
@@ -187,10 +186,10 @@ def main():
             if mclk_pwm:
                 mclk_pwm.deinit()
                 
-        print(f"Trigger released! Recorded {total_bytes} bytes to '{filename}'.")
+        print(f"Recorded {total_bytes} bytes to '{filename}'.")
         
-        # Debounce release
-        time.sleep_ms(150)
+        # Wait for release of key/trigger to debounce
+        time.sleep_ms(200)
         
         # 4. Playback
         if display: