diff --git a/frozen/pew-pewpew-lcd b/frozen/pew-pewpew-lcd
index 6452f2a78f32c..837f3e5f16acc 160000
--- a/frozen/pew-pewpew-lcd
+++ b/frozen/pew-pewpew-lcd
@@ -1 +1 @@
-Subproject commit 6452f2a78f32cf3b5d07e699f26d25e9c4d10d09
+Subproject commit 837f3e5f16accae5b3677954921b5ddd517f0799
diff --git a/ports/atmel-samd/common-hal/audioio/AudioIn.c b/ports/atmel-samd/common-hal/audioio/AudioIn.c
new file mode 100644
index 0000000000000..1b1c2c8c41daf
--- /dev/null
+++ b/ports/atmel-samd/common-hal/audioio/AudioIn.c
@@ -0,0 +1,72 @@
+/*
+ * This file is part of the MicroPython project, http://micropython.org/
+ *
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2017 Scott Shawcroft for Adafruit Industries
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+#include <stdint.h>
+#include <string.h>
+
+#include "extmod/vfs_fat.h"
+#include "py/gc.h"
+#include "py/mperrno.h"
+#include "py/runtime.h"
+#include "common-hal/audioio/AudioIn.h"
+#include "shared-bindings/audioio/AudioIn.h"
+#include "shared-bindings/microcontroller/__init__.h"
+#include "shared-bindings/microcontroller/Pin.h"
+#include "supervisor/shared/translate/translate.h"
+
+#include "atmel_start_pins.h"
+#include "hal/include/hal_gpio.h"
+#include "hpl/gclk/hpl_gclk_base.h"
+#include "peripheral_clk_config.h"
+
+#ifdef SAMD21
+#include "hpl/pm/hpl_pm_base.h"
+#endif
+
+#include "audio_dma.h"
+#include "timer_handler.h"
+
+#include "samd/dma.h"
+#include "samd/events.h"
+#include "samd/pins.h"
+#include "samd/timers.h"
+
+// Caller validates that pins are free.
+void common_hal_audioio_audioin_construct(audioio_audioin_obj_t *self,
+    const mcu_pin_obj_t *left_channel,
+    const mcu_pin_obj_t *right_channel,
+    uint16_t quiescent_value) {
+}
+
+bool common_hal_audioio_audioin_deinited(audioio_audioin_obj_t *self) {
+    return true;
+}
+
+void common_hal_audioio_audioin_deinit(audioio_audioin_obj_t *self) {
+    if (common_hal_audioio_audioin_deinited(self)) {
+        return;
+    }
+}
diff --git a/ports/atmel-samd/common-hal/audioio/AudioIn.h b/ports/atmel-samd/common-hal/audioio/AudioIn.h
new file mode 100644
index 0000000000000..88c64cbb5eaec
--- /dev/null
+++ b/ports/atmel-samd/common-hal/audioio/AudioIn.h
@@ -0,0 +1,50 @@
+/*
+ * This file is part of the MicroPython project, http://micropython.org/
+ *
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2017 Scott Shawcroft for Adafruit Industries
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+#ifndef MICROPY_INCLUDED_ATMEL_SAMD_COMMON_HAL_AUDIOIO_AUDIOIN_H
+#define MICROPY_INCLUDED_ATMEL_SAMD_COMMON_HAL_AUDIOIO_AUDIOIN_H
+
+#include "common-hal/microcontroller/Pin.h"
+
+#include "audio_dma.h"
+#include "py/obj.h"
+
+typedef struct {
+    mp_obj_base_t base;
+    const mcu_pin_obj_t *left_channel;
+    audio_dma_t left_dma;
+    #ifdef SAM_D5X_E5X
+    const mcu_pin_obj_t *right_channel;
+    audio_dma_t right_dma;
+    #endif
+    uint8_t tc_index;
+
+    uint8_t tc_to_dac_event_channel;
+    bool playing;
+    uint16_t quiescent_value;
+} audioio_audioin_obj_t;
+
+#endif // MICROPY_INCLUDED_ATMEL_SAMD_COMMON_HAL_AUDIOIO_AUDIOIN_H
diff --git a/py/circuitpy_defns.mk b/py/circuitpy_defns.mk
index af49c876ba404..5d619348a7d3c 100644
--- a/py/circuitpy_defns.mk
+++ b/py/circuitpy_defns.mk
@@ -395,6 +395,7 @@ SRC_COMMON_HAL_ALL = \
 	audiobusio/I2SOut.c \
 	audiobusio/PDMIn.c \
 	audiobusio/__init__.c \
+	audioio/AudioIn.c \
 	audioio/AudioOut.c \
 	audioio/__init__.c \
 	audiopwmio/PWMAudioOut.c \
diff --git a/shared-bindings/audioio/AudioIn.c b/shared-bindings/audioio/AudioIn.c
new file mode 100644
index 0000000000000..1c3e73b714ff9
--- /dev/null
+++ b/shared-bindings/audioio/AudioIn.c
@@ -0,0 +1,159 @@
+/*
+ * This file is part of the Micro Python project, http://micropython.org/
+ *
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2017 Scott Shawcroft for Adafruit Industries
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+#include <stdint.h>
+
+#include "shared/runtime/context_manager_helpers.h"
+#include "py/binary.h"
+#include "py/objproperty.h"
+#include "py/runtime.h"
+#include "shared-bindings/microcontroller/Pin.h"
+#include "shared-bindings/audioio/AudioIn.h"
+#include "shared-bindings/audiocore/RawSample.h"
+#include "shared-bindings/util.h"
+#include "supervisor/shared/translate/translate.h"
+
+//| class AudioIn:
+//|     """Output an analog audio signal"""
+//|
+//|     def __init__(self, left_channel: microcontroller.Pin, *, right_channel: Optional[microcontroller.Pin] = None, quiescent_value: int = 0x8000) -> None:
+//|         """Create a AudioIn object associated with the given pin(s). This allows you to
+//|         play audio signals out on the given pin(s).
+//|
+//|         :param ~microcontroller.Pin left_channel: The pin to output the left channel to
+//|         :param ~microcontroller.Pin right_channel: The pin to output the right channel to
+//|         :param int quiescent_value: The output value when no signal is present. Samples should start
+//|             and end with this value to prevent audible popping.
+//|
+//|         Simple 8ksps 440 Hz sin wave::
+//|
+//|           import audiocore
+//|           import audioio
+//|           import board
+//|           import array
+//|           import time
+//|           import math
+//|
+//|           # Generate one period of sine wav.
+//|           length = 8000 // 440
+//|           sine_wave = array.array("H", [0] * length)
+//|           for i in range(length):
+//|               sine_wave[i] = int(math.sin(math.pi * 2 * i / length) * (2 ** 15) + 2 ** 15)
+//|
+//|           dac = audioio.AudioIn(board.SPEAKER)
+//|           sine_wave = audiocore.RawSample(sine_wave, sample_rate=8000)
+//|           dac.play(sine_wave, loop=True)
+//|           time.sleep(1)
+//|           dac.stop()
+//|
+//|         Playing a wave file from flash::
+//|
+//|           import board
+//|           import audioio
+//|           import digitalio
+//|
+//|           # Required for CircuitPlayground Express
+//|           speaker_enable = digitalio.DigitalInOut(board.SPEAKER_ENABLE)
+//|           speaker_enable.switch_to_output(value=True)
+//|
+//|           data = open("cplay-5.1-16bit-16khz.wav", "rb")
+//|           wav = audiocore.WaveFile(data)
+//|           a = audioio.AudioIn(board.A0)
+//|
+//|           print("playing")
+//|           a.play(wav)
+//|           while a.playing:
+//|             pass
+//|           print("stopped")"""
+//|         ...
+//|
+STATIC mp_obj_t audioio_audioin_make_new(const mp_obj_type_t *type, size_t n_args, size_t n_kw, const mp_obj_t *all_args) {
+    enum { ARG_left_channel, ARG_right_channel, ARG_quiescent_value };
+    static const mp_arg_t allowed_args[] = {
+        { MP_QSTR_left_channel, MP_ARG_OBJ | MP_ARG_REQUIRED },
+        { MP_QSTR_right_channel, MP_ARG_OBJ | MP_ARG_KW_ONLY, {.u_rom_obj = mp_const_none} },
+        { MP_QSTR_quiescent_value, MP_ARG_INT | MP_ARG_KW_ONLY, {.u_int = 0x8000} },
+    };
+    mp_arg_val_t args[MP_ARRAY_SIZE(allowed_args)];
+    mp_arg_parse_all_kw_array(n_args, n_kw, all_args, MP_ARRAY_SIZE(allowed_args), allowed_args, args);
+
+    const mcu_pin_obj_t *left_channel_pin = validate_obj_is_free_pin(args[ARG_left_channel].u_obj);
+    const mcu_pin_obj_t *right_channel_pin = validate_obj_is_free_pin_or_none(args[ARG_right_channel].u_obj);
+
+    // create AudioIn object from the given pin
+    audioio_audioin_obj_t *self = m_new_obj(audioio_audioin_obj_t);
+    self->base.type = &audioio_audioin_type;
+    common_hal_audioio_audioin_construct(self, left_channel_pin, right_channel_pin, args[ARG_quiescent_value].u_int);
+
+    return MP_OBJ_FROM_PTR(self);
+}
+
+//|     def deinit(self) -> None:
+//|         """Deinitialises the AudioIn and releases any hardware resources for reuse."""
+//|         ...
+//|
+STATIC mp_obj_t audioio_audioin_deinit(mp_obj_t self_in) {
+    audioio_audioin_obj_t *self = MP_OBJ_TO_PTR(self_in);
+    common_hal_audioio_audioin_deinit(self);
+    return mp_const_none;
+}
+STATIC MP_DEFINE_CONST_FUN_OBJ_1(audioio_audioin_deinit_obj, audioio_audioin_deinit);
+
+//|     def __enter__(self) -> AudioIn:
+//|         """No-op used by Context Managers."""
+//|         ...
+//|
+//  Provided by context manager helper.
+
+//|     def __exit__(self) -> None:
+//|         """Automatically deinitializes the hardware when exiting a context. See
+//|         :ref:`lifetime-and-contextmanagers` for more info."""
+//|         ...
+//|
+STATIC mp_obj_t audioio_audioin_obj___exit__(size_t n_args, const mp_obj_t *args) {
+    (void)n_args;
+    common_hal_audioio_audioin_deinit(args[0]);
+    return mp_const_none;
+}
+STATIC MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(audioio_audioin___exit___obj, 4, 4, audioio_audioin_obj___exit__);
+
+
+STATIC const mp_rom_map_elem_t audioio_audioin_locals_dict_table[] = {
+    // Methods
+    { MP_ROM_QSTR(MP_QSTR_deinit), MP_ROM_PTR(&audioio_audioin_deinit_obj) },
+    { MP_ROM_QSTR(MP_QSTR___enter__), MP_ROM_PTR(&default___enter___obj) },
+    { MP_ROM_QSTR(MP_QSTR___exit__), MP_ROM_PTR(&audioio_audioin___exit___obj) },
+
+    // Properties
+};
+STATIC MP_DEFINE_CONST_DICT(audioio_audioin_locals_dict, audioio_audioin_locals_dict_table);
+
+const mp_obj_type_t audioio_audioin_type = {
+    { &mp_type_type },
+    .name = MP_QSTR_AudioIn,
+    .make_new = audioio_audioin_make_new,
+    .locals_dict = (mp_obj_dict_t *)&audioio_audioin_locals_dict,
+};
diff --git a/shared-bindings/audioio/AudioIn.h b/shared-bindings/audioio/AudioIn.h
new file mode 100644
index 0000000000000..9bbe2a09d7bce
--- /dev/null
+++ b/shared-bindings/audioio/AudioIn.h
@@ -0,0 +1,43 @@
+/*
+ * This file is part of the Micro Python project, http://micropython.org/
+ *
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2017 Scott Shawcroft for Adafruit Industries
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+#ifndef MICROPY_INCLUDED_SHARED_BINDINGS_AUDIOIO_AUDIOIN_H
+#define MICROPY_INCLUDED_SHARED_BINDINGS_AUDIOIO_AUDIOIN_H
+
+#include "common-hal/audioio/AudioIn.h"
+#include "common-hal/microcontroller/Pin.h"
+#include "shared-bindings/audiocore/RawSample.h"
+
+extern const mp_obj_type_t audioio_audioin_type;
+
+// left_channel will always be non-NULL but right_channel may be for mono output.
+void common_hal_audioio_audioin_construct(audioio_audioin_obj_t *self,
+    const mcu_pin_obj_t *left_channel, const mcu_pin_obj_t *right_channel, uint16_t default_value);
+
+void common_hal_audioio_audioin_deinit(audioio_audioin_obj_t *self);
+bool common_hal_audioio_audioin_deinited(audioio_audioin_obj_t *self);
+
+#endif // MICROPY_INCLUDED_SHARED_BINDINGS_AUDIOIO_AUDIOIN_H
diff --git a/shared-bindings/audioio/__init__.c b/shared-bindings/audioio/__init__.c
index 9f8411f484c60..45ecdb7619a2b 100644
--- a/shared-bindings/audioio/__init__.c
+++ b/shared-bindings/audioio/__init__.c
@@ -32,6 +32,7 @@
 #include "shared-bindings/microcontroller/Pin.h"
 #include "shared-bindings/audioio/__init__.h"
 #include "shared-bindings/audioio/AudioOut.h"
+#include "shared-bindings/audioio/AudioIn.h"
 
 //| """Support for audio output
 //|
@@ -53,6 +54,7 @@
 STATIC const mp_rom_map_elem_t audioio_module_globals_table[] = {
     { MP_ROM_QSTR(MP_QSTR___name__), MP_ROM_QSTR(MP_QSTR_audioio) },
     { MP_ROM_QSTR(MP_QSTR_AudioOut), MP_ROM_PTR(&audioio_audioout_type) },
+    { MP_ROM_QSTR(MP_QSTR_AudioIn),  MP_ROM_PTR(&audioio_audioin_type) },
 };
 
 STATIC MP_DEFINE_CONST_DICT(audioio_module_globals, audioio_module_globals_table);