added amp enable to audio.py

Author: thirdr

micropython/examples/cosmic_unicorn/audio/audio.py

@@ -5,7 +5,7 @@
 import os
 import math
 import struct
-from machine import I2S
+from machine import I2S, Pin
 
 """
 A class for playing Wav files out of an I2S audio amp. It can also play pure tones.
@@ -34,12 +34,16 @@ class WavPlayer:
     TONE_BITS_PER_SAMPLE = 16
     TONE_FULL_WAVES = 2
 
-    def __init__(self, id, sck_pin, ws_pin, sd_pin, ibuf_len=INTERNAL_BUFFER_LENGTH, root="/"):
+    def __init__(self, id, sck_pin, ws_pin, sd_pin, amp_enable=None, ibuf_len=INTERNAL_BUFFER_LENGTH, root="/"):
         self.__id = id
         self.__sck_pin = sck_pin
         self.__ws_pin = ws_pin
         self.__sd_pin = sd_pin
         self.__ibuf_len = ibuf_len
+        self.__enable = None
+
+        if amp_enable is not None:
+            self.__enable = Pin(amp_enable, Pin.OUT)
 
         # Set the directory to search for files in
         self.set_root(root)
@@ -167,11 +171,17 @@ def __start_i2s(self, bits=16, format=I2S.MONO, rate=44_100, state=STOP, mode=MO
         self.__audio_out.irq(self.__i2s_callback)
         self.__audio_out.write(self.__silence_samples)
 
+        if self.__enable is not None:
+            self.__enable.on()
+
     def __stop_i2s(self):
         self.stop()                     # Stop any active playback
         while self.is_playing():        # and wait for it to complete
             pass
 
+        if self.__enable is not None:
+            self.__enable.off()
+
         if self.__audio_out is not None:
             self.__audio_out.deinit()   # Deinit any active I2S comms
 

micropython/examples/cosmic_unicorn/audio/countdown_with_alarm.py

@@ -1,4 +1,4 @@
-from machine import Pin, Timer
+from machine import Timer
 from audio import WavPlayer
 from cosmic import CosmicUnicorn
 from picographics import PicoGraphics, DISPLAY_COSMIC_UNICORN as DISPLAY
@@ -7,9 +7,6 @@
 cu = CosmicUnicorn()
 graphics = PicoGraphics(DISPLAY)
 
-amp_enable = Pin(22, Pin.OUT)
-amp_enable.on()
-
 graphics.set_font("bitmap6")
 WHITE = graphics.create_pen(255, 255, 255)
 BLUE = graphics.create_pen(0, 0, 255)
@@ -18,7 +15,7 @@
 GREEN = graphics.create_pen(0, 255, 0)
 cu.set_brightness(0.7)
 
-audio = WavPlayer(0, 10, 11, 9)
+audio = WavPlayer(0, 10, 11, 9, amp_enable=22)
 
 
 class Countdown(object):

micropython/examples/cosmic_unicorn/audio/example_menu_with_sound.py

@@ -1,4 +1,3 @@
-from machine import Pin
 from audio import WavPlayer
 from cosmic import CosmicUnicorn
 from picographics import PicoGraphics, DISPLAY_COSMIC_UNICORN as DISPLAY
@@ -7,10 +6,7 @@
 cu = CosmicUnicorn()
 graphics = PicoGraphics(DISPLAY)
 
-amp_enable = Pin(22, Pin.OUT)
-amp_enable.on()
-
-audio = WavPlayer(0, 10, 11, 9)
+audio = WavPlayer(0, 10, 11, 9, amp_enable=22)
 
 WHITE = graphics.create_pen(255, 255, 255)
 RED = graphics.create_pen(255, 0, 0)

micropython/examples/cosmic_unicorn/audio/simple_playback.py

@@ -1,12 +1,6 @@
-from machine import Pin
 from audio import WavPlayer
-from cosmic import CosmicUnicorn
 
-cu = CosmicUnicorn()
-amp_enable = Pin(22, Pin.OUT)
-amp_enable.on()
-
-sound = WavPlayer(0, 10, 11, 9)
+sound = WavPlayer(0, 10, 11, 9, amp_enable=22)
 
 sound.play_wav("beepboop.wav", False)
 

micropython/examples/galactic_unicorn/audio/audio.py

@@ -5,7 +5,7 @@
 import os
 import math
 import struct
-from machine import I2S
+from machine import I2S, Pin
 
 """
 A class for playing Wav files out of an I2S audio amp. It can also play pure tones.
@@ -34,12 +34,16 @@ class WavPlayer:
     TONE_BITS_PER_SAMPLE = 16
     TONE_FULL_WAVES = 2
 
-    def __init__(self, id, sck_pin, ws_pin, sd_pin, ibuf_len=INTERNAL_BUFFER_LENGTH, root="/"):
+    def __init__(self, id, sck_pin, ws_pin, sd_pin, amp_enable=None, ibuf_len=INTERNAL_BUFFER_LENGTH, root="/"):
         self.__id = id
         self.__sck_pin = sck_pin
         self.__ws_pin = ws_pin
         self.__sd_pin = sd_pin
         self.__ibuf_len = ibuf_len
+        self.__enable = None
+
+        if amp_enable is not None:
+            self.__enable = Pin(amp_enable, Pin.OUT)
 
         # Set the directory to search for files in
         self.set_root(root)
@@ -167,11 +171,17 @@ def __start_i2s(self, bits=16, format=I2S.MONO, rate=44_100, state=STOP, mode=MO
         self.__audio_out.irq(self.__i2s_callback)
         self.__audio_out.write(self.__silence_samples)
 
+        if self.__enable is not None:
+            self.__enable.on()
+
     def __stop_i2s(self):
         self.stop()                     # Stop any active playback
         while self.is_playing():        # and wait for it to complete
             pass
 
+        if self.__enable is not None:
+            self.__enable.off()
+
         if self.__audio_out is not None:
             self.__audio_out.deinit()   # Deinit any active I2S comms
 

micropython/examples/galactic_unicorn/audio/countdown_with_alarm.py

@@ -1,4 +1,4 @@
-from machine import Pin, Timer
+from machine import Timer
 from audio import WavPlayer
 from galactic import GalacticUnicorn
 from picographics import PicoGraphics, DISPLAY_GALACTIC_UNICORN as DISPLAY
@@ -7,9 +7,6 @@
 gu = GalacticUnicorn()
 graphics = PicoGraphics(DISPLAY)
 
-amp_enable = Pin(22, Pin.OUT)
-amp_enable.on()
-
 graphics.set_font("bitmap6")
 WHITE = graphics.create_pen(255, 255, 255)
 BLUE = graphics.create_pen(0, 0, 255)
@@ -18,7 +15,7 @@
 GREEN = graphics.create_pen(0, 255, 0)
 gu.set_brightness(0.7)
 
-audio = WavPlayer(0, 10, 11, 9)
+audio = WavPlayer(0, 10, 11, 9, amp_enable=22)
 
 
 class Countdown(object):

micropython/examples/galactic_unicorn/audio/example_menu_with_sound.py

@@ -1,4 +1,3 @@
-from machine import Pin
 from audio import WavPlayer
 from galactic import GalacticUnicorn
 from picographics import PicoGraphics, DISPLAY_GALACTIC_UNICORN as DISPLAY
@@ -7,10 +6,7 @@
 gu = GalacticUnicorn()
 graphics = PicoGraphics(DISPLAY)
 
-amp_enable = Pin(22, Pin.OUT)
-amp_enable.on()
-
-audio = WavPlayer(0, 10, 11, 9)
+audio = WavPlayer(0, 10, 11, 9, amp_enable=22)
 
 WHITE = graphics.create_pen(255, 255, 255)
 RED = graphics.create_pen(255, 0, 0)

micropython/examples/galactic_unicorn/audio/simple_playback.py

@@ -1,12 +1,6 @@
-from machine import Pin
 from audio import WavPlayer
-from galactic import GalacticUnicorn
 
-gu = GalacticUnicorn()
-amp_enable = Pin(22, Pin.OUT)
-amp_enable.on()
-
-sound = WavPlayer(0, 10, 11, 9)
+sound = WavPlayer(0, 10, 11, 9, amp_enable=22)
 
 sound.play_wav("beepboop.wav", False)
 

micropython/examples/stellar_unicorn/audio/audio.py

@@ -5,7 +5,7 @@
 import os
 import math
 import struct
-from machine import I2S
+from machine import I2S, Pin
 
 """
 A class for playing Wav files out of an I2S audio amp. It can also play pure tones.
@@ -34,12 +34,16 @@ class WavPlayer:
     TONE_BITS_PER_SAMPLE = 16
     TONE_FULL_WAVES = 2
 
-    def __init__(self, id, sck_pin, ws_pin, sd_pin, ibuf_len=INTERNAL_BUFFER_LENGTH, root="/"):
+    def __init__(self, id, sck_pin, ws_pin, sd_pin, amp_enable=None, ibuf_len=INTERNAL_BUFFER_LENGTH, root="/"):
         self.__id = id
         self.__sck_pin = sck_pin
         self.__ws_pin = ws_pin
         self.__sd_pin = sd_pin
         self.__ibuf_len = ibuf_len
+        self.__enable = None
+
+        if amp_enable is not None:
+            self.__enable = Pin(amp_enable, Pin.OUT)
 
         # Set the directory to search for files in
         self.set_root(root)
@@ -167,11 +171,17 @@ def __start_i2s(self, bits=16, format=I2S.MONO, rate=44_100, state=STOP, mode=MO
         self.__audio_out.irq(self.__i2s_callback)
         self.__audio_out.write(self.__silence_samples)
 
+        if self.__enable is not None:
+            self.__enable.on()
+
     def __stop_i2s(self):
         self.stop()                     # Stop any active playback
         while self.is_playing():        # and wait for it to complete
             pass
 
+        if self.__enable is not None:
+            self.__enable.off()
+
         if self.__audio_out is not None:
             self.__audio_out.deinit()   # Deinit any active I2S comms
 

micropython/examples/stellar_unicorn/audio/countdown_with_alarm.py

@@ -3,7 +3,7 @@
 # Use VOL +/- to increase/decrease the amount of time
 # Use the Sleep ZZZ button to start the countdown
 
-from machine import Pin, Timer
+from machine import Timer
 from audio import WavPlayer
 from stellar import StellarUnicorn
 from picographics import PicoGraphics, DISPLAY_STELLAR_UNICORN as DISPLAY
@@ -12,9 +12,6 @@
 su = StellarUnicorn()
 graphics = PicoGraphics(DISPLAY)
 
-amp_enable = Pin(22, Pin.OUT)
-amp_enable.on()
-
 graphics.set_font("bitmap6")
 WHITE = graphics.create_pen(255, 255, 255)
 BLUE = graphics.create_pen(0, 0, 255)
@@ -23,7 +20,7 @@
 GREEN = graphics.create_pen(0, 255, 0)
 su.set_brightness(0.5)
 
-audio = WavPlayer(0, 10, 11, 9)
+audio = WavPlayer(0, 10, 11, 9, amp_enable=22)
 
 
 class Countdown(object):