diff --git a/lib/tinyusb b/lib/tinyusb
index f1e006d09b..6c7c9f2ef5 160000
--- a/lib/tinyusb
+++ b/lib/tinyusb
@@ -1 +1 @@
-Subproject commit f1e006d09bd32088ab421d0b519eb89c531eda4e
+Subproject commit 6c7c9f2ef5a80d5a6879e9c3558162188c6cf889
diff --git a/locale/de_DE.po b/locale/de_DE.po
index 41d873e7ff..e706cb81c5 100644
--- a/locale/de_DE.po
+++ b/locale/de_DE.po
@@ -6,7 +6,7 @@ msgstr ""
 "Project-Id-Version: \n"
 "Report-Msgid-Bugs-To: \n"
 "POT-Creation-Date: 2021-01-04 12:55-0600\n"
-"PO-Revision-Date: 2023-07-10 14:50+0000\n"
+"PO-Revision-Date: 2023-07-19 21:06+0000\n"
 "Last-Translator: Luc <some_physics@live.com>\n"
 "Language: de_DE\n"
 "MIME-Version: 1.0\n"
@@ -487,7 +487,7 @@ msgstr "Alle Kanäle werden verwendet"
 
 #: ports/raspberrypi/common-hal/usb_host/Port.c
 msgid "All dma channels in use"
-msgstr ""
+msgstr "All DMA-Kanäle in Verwendung"
 
 #: ports/atmel-samd/common-hal/audioio/AudioOut.c
 msgid "All event channels in use"
diff --git a/locale/en_GB.po b/locale/en_GB.po
index c4d1039de7..02d8748cf8 100644
--- a/locale/en_GB.po
+++ b/locale/en_GB.po
@@ -7,7 +7,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: PACKAGE VERSION\n"
 "Report-Msgid-Bugs-To: \n"
-"PO-Revision-Date: 2023-05-23 22:55+0000\n"
+"PO-Revision-Date: 2023-07-19 21:06+0000\n"
 "Last-Translator: Andi Chandler <andi@gowling.com>\n"
 "Language-Team: none\n"
 "Language: en_GB\n"
@@ -15,7 +15,7 @@ msgstr ""
 "Content-Type: text/plain; charset=UTF-8\n"
 "Content-Transfer-Encoding: 8bit\n"
 "Plural-Forms: nplurals=2; plural=n != 1;\n"
-"X-Generator: Weblate 4.18-dev\n"
+"X-Generator: Weblate 5.0-dev\n"
 
 #: main.c
 msgid ""
@@ -486,7 +486,7 @@ msgstr "All channels in use"
 
 #: ports/raspberrypi/common-hal/usb_host/Port.c
 msgid "All dma channels in use"
-msgstr ""
+msgstr "All DMA channels in use"
 
 #: ports/atmel-samd/common-hal/audioio/AudioOut.c
 msgid "All event channels in use"
@@ -1378,7 +1378,7 @@ msgstr "Mismatched swap flag"
 
 #: ports/mimxrt10xx/common-hal/busio/SPI.c
 msgid "Missing MISO or MOSI Pin"
-msgstr "Missing MISO or MOSI pin"
+msgstr "Missing MISO or MOSI Pin"
 
 #: ports/stm/common-hal/busio/SPI.c
 msgid "Missing MISO or MOSI pin"
@@ -1493,7 +1493,7 @@ msgstr "No IP"
 #: ports/espressif/common-hal/busio/SPI.c
 #: ports/mimxrt10xx/common-hal/busio/SPI.c
 msgid "No MISO Pin"
-msgstr "No MISO pin"
+msgstr "No MISO Pin"
 
 #: ports/stm/common-hal/busio/SPI.c shared-module/bitbangio/SPI.c
 msgid "No MISO pin"
@@ -1502,7 +1502,7 @@ msgstr "No MISO pin"
 #: ports/espressif/common-hal/busio/SPI.c
 #: ports/mimxrt10xx/common-hal/busio/SPI.c
 msgid "No MOSI Pin"
-msgstr "No MOSI pin"
+msgstr "No MOSI Pin"
 
 #: ports/stm/common-hal/busio/SPI.c shared-module/bitbangio/SPI.c
 msgid "No MOSI pin"
diff --git a/locale/zh_Latn_pinyin.po b/locale/zh_Latn_pinyin.po
index 4f56b14dfd..8ff874492e 100644
--- a/locale/zh_Latn_pinyin.po
+++ b/locale/zh_Latn_pinyin.po
@@ -7,7 +7,7 @@ msgstr ""
 "Project-Id-Version: circuitpython-cn\n"
 "Report-Msgid-Bugs-To: \n"
 "POT-Creation-Date: 2021-01-04 12:55-0600\n"
-"PO-Revision-Date: 2023-07-16 04:32+0000\n"
+"PO-Revision-Date: 2023-07-21 00:10+0000\n"
 "Last-Translator: hexthat <hexthat@gmail.com>\n"
 "Language-Team: Chinese Hanyu Pinyin\n"
 "Language: zh_Latn_pinyin\n"
@@ -1641,7 +1641,7 @@ msgstr "Bù zhīchí jīshù"
 
 #: supervisor/shared/bluetooth/bluetooth.c
 msgid "Off"
-msgstr "guānbì"
+msgstr "Guānbì"
 
 #: supervisor/shared/bluetooth/bluetooth.c
 msgid "Ok"
@@ -3286,7 +3286,7 @@ msgstr "bù zhèngquè de tiánchōng"
 
 #: extmod/ulab/code/ndarray.c extmod/ulab/code/numpy/transform.c
 msgid "index is out of bounds"
-msgstr "suǒyǐn chāochū fànwéi"
+msgstr "suǒyǐn yuèjiè"
 
 #: shared-bindings/_pixelmap/PixelMap.c
 msgid "index must be tuple or int"
diff --git a/ports/atmel-samd/boards/mini_sam_m4/mpconfigboard.mk b/ports/atmel-samd/boards/mini_sam_m4/mpconfigboard.mk
index c3e21a4c36..fcbbbd5bf9 100644
--- a/ports/atmel-samd/boards/mini_sam_m4/mpconfigboard.mk
+++ b/ports/atmel-samd/boards/mini_sam_m4/mpconfigboard.mk
@@ -12,6 +12,7 @@ LONGINT_IMPL = MPZ
 
 # No I2S on SAMD51G
 CIRCUITPY_AUDIOBUSIO = 0
+CIRCUITPY_SYNTHIO = 0
 
 CIRCUITPY_BITBANG_APA102 = 1
 
diff --git a/ports/espressif/boards/unexpectedmaker_feathers3/mpconfigboard.h b/ports/espressif/boards/unexpectedmaker_feathers3/mpconfigboard.h
index 67054b8664..1d51cb77d9 100644
--- a/ports/espressif/boards/unexpectedmaker_feathers3/mpconfigboard.h
+++ b/ports/espressif/boards/unexpectedmaker_feathers3/mpconfigboard.h
@@ -34,8 +34,9 @@
 
 #define MICROPY_HW_LED_STATUS (&pin_GPIO13)
 
-#define DEFAULT_I2C_BUS_SCL (&pin_GPIO9)
-#define DEFAULT_I2C_BUS_SDA (&pin_GPIO8)
+#define CIRCUITPY_BOARD_I2C         (2)
+#define CIRCUITPY_BOARD_I2C_PIN     {{.scl = &pin_GPIO9, .sda = &pin_GPIO8}, \
+                                     {.scl = &pin_GPIO15, .sda = &pin_GPIO16}}
 
 #define DEFAULT_SPI_BUS_SCK (&pin_GPIO36)
 #define DEFAULT_SPI_BUS_MOSI (&pin_GPIO35)
diff --git a/ports/espressif/boards/unexpectedmaker_feathers3/pins.c b/ports/espressif/boards/unexpectedmaker_feathers3/pins.c
index 9a2fde5a0c..5cdfc69ed2 100644
--- a/ports/espressif/boards/unexpectedmaker_feathers3/pins.c
+++ b/ports/espressif/boards/unexpectedmaker_feathers3/pins.c
@@ -1,5 +1,7 @@
 #include "shared-bindings/board/__init__.h"
 
+CIRCUITPY_BOARD_BUS_SINGLETON(stemma_i2c, i2c, 1)
+
 STATIC const mp_rom_map_elem_t board_module_globals_table[] = {
     CIRCUITPYTHON_BOARD_DICT_STANDARD_ITEMS
 
@@ -89,11 +91,16 @@ STATIC const mp_rom_map_elem_t board_module_globals_table[] = {
     { MP_ROM_QSTR(MP_QSTR_D13), MP_ROM_PTR(&pin_GPIO11) },
     { MP_ROM_QSTR(MP_QSTR_A10), MP_ROM_PTR(&pin_GPIO11) },
 
-    { MP_ROM_QSTR(MP_QSTR_LED), MP_ROM_PTR(&pin_GPIO13) }, // Blue LED
+    // Blue LED
+    { MP_ROM_QSTR(MP_QSTR_LED), MP_ROM_PTR(&pin_GPIO13) },
+
+    // STEMMA QT Vertical Connector I2C IO
+    { MP_ROM_QSTR(MP_QSTR_IO15), MP_ROM_PTR(&pin_GPIO15) },
+    { MP_ROM_QSTR(MP_QSTR_SCL2), MP_ROM_PTR(&pin_GPIO15) },
+    { MP_ROM_QSTR(MP_QSTR_IO16), MP_ROM_PTR(&pin_GPIO16) },
+    { MP_ROM_QSTR(MP_QSTR_SDA2), MP_ROM_PTR(&pin_GPIO16) },
 
     // Battery voltage sense pin
-    // I really don't know what name to use here. Adafruit use BATTERY & VOLTAGE_MONITOR
-    // I prefer VBAT or VBAT_SENSE
     { MP_ROM_QSTR(MP_QSTR_BATTERY), MP_ROM_PTR(&pin_GPIO2) },
     { MP_ROM_QSTR(MP_QSTR_VBAT), MP_ROM_PTR(&pin_GPIO2) },
     { MP_ROM_QSTR(MP_QSTR_VBAT_SENSE), MP_ROM_PTR(&pin_GPIO2) },
@@ -103,18 +110,29 @@ STATIC const mp_rom_map_elem_t board_module_globals_table[] = {
     { MP_ROM_QSTR(MP_QSTR_VBUS), MP_ROM_PTR(&pin_GPIO34) },
     { MP_ROM_QSTR(MP_QSTR_VBUS_SENSE), MP_ROM_PTR(&pin_GPIO34) },
 
+    // Neopixel pins
     { MP_ROM_QSTR(MP_QSTR_NEOPIXEL_POWER), MP_ROM_PTR(&pin_GPIO39) },
     { MP_ROM_QSTR(MP_QSTR_NEOPIXEL), MP_ROM_PTR(&pin_GPIO40) },
 
-    { MP_ROM_QSTR(MP_QSTR_IO4), MP_ROM_PTR(&pin_GPIO4) }, // Ambient Light Sensor
-    { MP_ROM_QSTR(MP_QSTR_AMB), MP_ROM_PTR(&pin_GPIO4) }, // Ambient Light Sensor
+    // Ambient Light Sensor
+    { MP_ROM_QSTR(MP_QSTR_IO4), MP_ROM_PTR(&pin_GPIO4) },
+    { MP_ROM_QSTR(MP_QSTR_AMB), MP_ROM_PTR(&pin_GPIO4) },
 
-    { MP_ROM_QSTR(MP_QSTR_LDO2), MP_ROM_PTR(&pin_GPIO39) }, // Second LDO Enable control
-    { MP_ROM_QSTR(MP_QSTR_IO39), MP_ROM_PTR(&pin_GPIO39) }, // Second LDO Enable control
+    // Second LDO Enable control
+    { MP_ROM_QSTR(MP_QSTR_LDO2), MP_ROM_PTR(&pin_GPIO39) },
+    { MP_ROM_QSTR(MP_QSTR_IO39), MP_ROM_PTR(&pin_GPIO39) },
 
+    // I2C
     { MP_ROM_QSTR(MP_QSTR_I2C), MP_ROM_PTR(&board_i2c_obj) },
     { MP_ROM_QSTR(MP_QSTR_STEMMA_I2C), MP_ROM_PTR(&board_i2c_obj) },
+    { MP_ROM_QSTR(MP_QSTR_STEMMA_VERTICAL_I2C), MP_ROM_PTR(&board_stemma_i2c_obj) },
+    { MP_ROM_QSTR(MP_QSTR_STEMMA_I2C2), MP_ROM_PTR(&board_stemma_i2c_obj) },
+    { MP_ROM_QSTR(MP_QSTR_I2C2), MP_ROM_PTR(&board_stemma_i2c_obj) },
+
+    // SPI
     { MP_ROM_QSTR(MP_QSTR_SPI), MP_ROM_PTR(&board_spi_obj) },
+
+    // UART
     { MP_ROM_QSTR(MP_QSTR_UART), MP_ROM_PTR(&board_uart_obj) },
 };
 MP_DEFINE_CONST_DICT(board_module_globals, board_module_globals_table);
diff --git a/ports/mimxrt10xx/boards/imxrt1060_evk/board.c b/ports/mimxrt10xx/boards/imxrt1060_evk/board.c
index 4a2e6e0913..12278acabb 100644
--- a/ports/mimxrt10xx/boards/imxrt1060_evk/board.c
+++ b/ports/mimxrt10xx/boards/imxrt1060_evk/board.c
@@ -28,6 +28,8 @@
 #include "supervisor/board.h"
 #include "shared-bindings/microcontroller/Pin.h"
 
+#include "shared-bindings/usb_host/Port.h"
+
 // These pins should never ever be reset; doing so could interfere with basic operation.
 // Used in common-hal/microcontroller/Pin.c
 const mcu_pin_obj_t *mimxrt10xx_reset_forbidden_pins[] = {
@@ -55,4 +57,8 @@ const mcu_pin_obj_t *mimxrt10xx_reset_forbidden_pins[] = {
     NULL,                       // Must end in NULL.
 };
 
+void board_init(void) {
+    common_hal_usb_host_port_construct(&pin_USB_OTG2_DP, &pin_USB_OTG2_DN);
+}
+
 // Use the MP_WEAK supervisor/shared/board.c versions of routines not defined here.
diff --git a/ports/mimxrt10xx/boards/imxrt1060_evkb/board.c b/ports/mimxrt10xx/boards/imxrt1060_evkb/board.c
index 4a2e6e0913..26dd28cbb4 100644
--- a/ports/mimxrt10xx/boards/imxrt1060_evkb/board.c
+++ b/ports/mimxrt10xx/boards/imxrt1060_evkb/board.c
@@ -28,6 +28,8 @@
 #include "supervisor/board.h"
 #include "shared-bindings/microcontroller/Pin.h"
 
+#include "shared-bindings/usb_host/Port.h"
+
 // These pins should never ever be reset; doing so could interfere with basic operation.
 // Used in common-hal/microcontroller/Pin.c
 const mcu_pin_obj_t *mimxrt10xx_reset_forbidden_pins[] = {
@@ -52,7 +54,11 @@ const mcu_pin_obj_t *mimxrt10xx_reset_forbidden_pins[] = {
     // USB Pins
     &pin_GPIO_AD_B0_01, // ID Pin
     &pin_GPIO_AD_B0_03, // OC/Fault Pin
-    NULL,                       // Must end in NULL.
+    NULL,               // Must end in NULL.
 };
 
+void board_init(void) {
+    common_hal_usb_host_port_construct(&pin_USB_OTG2_DP, &pin_USB_OTG2_DN);
+}
+
 // Use the MP_WEAK supervisor/shared/board.c versions of routines not defined here.
diff --git a/ports/mimxrt10xx/boards/teensy41/board.c b/ports/mimxrt10xx/boards/teensy41/board.c
index 8ece1546d7..3418cff43f 100644
--- a/ports/mimxrt10xx/boards/teensy41/board.c
+++ b/ports/mimxrt10xx/boards/teensy41/board.c
@@ -28,6 +28,8 @@
 #include "supervisor/board.h"
 #include "shared-bindings/microcontroller/Pin.h"
 
+#include "shared-bindings/usb_host/Port.h"
+
 // These pins should never ever be reset; doing so could interfere with basic operation.
 // Used in common-hal/microcontroller/Pin.c
 const mcu_pin_obj_t *mimxrt10xx_reset_forbidden_pins[] = {
@@ -54,4 +56,8 @@ const mcu_pin_obj_t *mimxrt10xx_reset_forbidden_pins[] = {
     NULL,                       // Must end in NULL.
 };
 
+void board_init(void) {
+    common_hal_usb_host_port_construct(&pin_USB_OTG2_DP, &pin_USB_OTG2_DN);
+}
+
 // Use the MP_WEAK supervisor/shared/board.c versions of routines not defined here.
diff --git a/ports/mimxrt10xx/common-hal/usb_host/Port.c b/ports/mimxrt10xx/common-hal/usb_host/Port.c
index 126160c69c..444c410729 100644
--- a/ports/mimxrt10xx/common-hal/usb_host/Port.c
+++ b/ports/mimxrt10xx/common-hal/usb_host/Port.c
@@ -29,9 +29,13 @@
 
 #include "py/runtime.h"
 
-bool usb_host_init;
+#include "tusb.h"
 
-void common_hal_usb_host_port_construct(usb_host_port_obj_t *self, const mcu_pin_obj_t *dp, const mcu_pin_obj_t *dm) {
+#include "imx_usb.h"
+
+usb_host_port_obj_t usb_host_instance;
+
+usb_host_port_obj_t *common_hal_usb_host_port_construct(const mcu_pin_obj_t *dp, const mcu_pin_obj_t *dm) {
     const mcu_pin_obj_t *supported_dp;
     const mcu_pin_obj_t *supported_dm;
     if (CIRCUITPY_USB_HOST_INSTANCE == 0) {
@@ -41,18 +45,27 @@ void common_hal_usb_host_port_construct(usb_host_port_obj_t *self, const mcu_pin
         supported_dp = &pin_USB_OTG2_DP;
         supported_dm = &pin_USB_OTG2_DN;
     }
+    // Return the singleton if given the same pins.
+    usb_host_port_obj_t *self = &usb_host_instance;
+    if (self->dp != NULL) {
+        if (self->dp != dp || self->dm != dm) {
+            mp_raise_msg_varg(&mp_type_RuntimeError, translate("%q in use"), MP_QSTR_usb_host);
+        }
+        return self;
+    }
     if (dp != supported_dp || dm != supported_dm) {
         raise_ValueError_invalid_pins();
     }
-    self->init = true;
-    usb_host_init = true;
-}
 
-void common_hal_usb_host_port_deinit(usb_host_port_obj_t *self) {
-    self->init = false;
-    usb_host_init = false;
-}
+    assert_pin_free(dp);
+    assert_pin_free(dm);
 
-bool common_hal_usb_host_port_deinited(usb_host_port_obj_t *self) {
-    return !self->init;
+    init_usb_instance(CIRCUITPY_USB_HOST_INSTANCE);
+    tuh_init(TUH_OPT_RHPORT);
+
+    self->base.type = &usb_host_port_type;
+    self->dp = dp;
+    self->dm = dm;
+
+    return self;
 }
diff --git a/ports/mimxrt10xx/common-hal/usb_host/Port.h b/ports/mimxrt10xx/common-hal/usb_host/Port.h
index dad1adf3a2..59f7735439 100644
--- a/ports/mimxrt10xx/common-hal/usb_host/Port.h
+++ b/ports/mimxrt10xx/common-hal/usb_host/Port.h
@@ -31,11 +31,8 @@
 
 typedef struct {
     mp_obj_base_t base;
-    bool init;
+    const mcu_pin_obj_t *dp;
+    const mcu_pin_obj_t *dm;
 } usb_host_port_obj_t;
 
-// Cheater state so that the usb module knows if it should return the TinyUSB
-// state.
-extern bool usb_host_init;
-
 #endif // MICROPY_INCLUDED_MIMXRT10XX_COMMON_HAL_USB_HOST_PORT_H
diff --git a/ports/mimxrt10xx/imx_usb.h b/ports/mimxrt10xx/imx_usb.h
new file mode 100644
index 0000000000..7ae7df8461
--- /dev/null
+++ b/ports/mimxrt10xx/imx_usb.h
@@ -0,0 +1,31 @@
+/*
+ * This file is part of the Micro Python project, http://micropython.org/
+ *
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2022 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.
+ */
+
+#pragma once
+
+// Provided by supervisor/usb.c that has a shared, non-port-specific header. So,
+// just define it here.
+void init_usb_instance(mp_int_t instance);
diff --git a/ports/mimxrt10xx/linking/common.ld b/ports/mimxrt10xx/linking/common.ld
index 71e2c457c3..6e674a49f2 100644
--- a/ports/mimxrt10xx/linking/common.ld
+++ b/ports/mimxrt10xx/linking/common.ld
@@ -71,7 +71,7 @@ SECTIONS
         . = ALIGN(4);
     *(EXCLUDE_FILE(
         *fsl_flexspi.o
-        *dcd_ci_hs.o
+        *cd_ci_hs.o
         *ehci.o
         *tusb_fifo.o
         *usbd.o
@@ -88,6 +88,9 @@ SECTIONS
         /* Keep USB processing functions out of RAM because we don't know which will be used.
            We try to only keep USB interrupt related functions. */
         *dcd_ci_hs.o(.text.process_*_request .text.dcd_edpt* .text.dcd_init .text.dcd_set_address)
+        /* Move hcd_dcache* routines to RAM so that we don't cross execution from
+           the cache during cache maintenance. Weird things happen when we do. */
+        *hcd_ci_hs.o(.text.hcd_i*)
         *usbd.o(.text.process_*_request .text.process_[gs]et* .text.tud_* .text.usbd_* .text.configuration_reset .text.invoke_*)
         *ehci.o(.text.hcd_edpt* .text.hcd_setup* .text.ehci_init* .text.hcd_port* .text.hcd_device* .text.qtd_init* .text.list_remove*)
 
diff --git a/ports/mimxrt10xx/supervisor/usb.c b/ports/mimxrt10xx/supervisor/usb.c
index 64a2639c16..ab0bd15b51 100644
--- a/ports/mimxrt10xx/supervisor/usb.c
+++ b/ports/mimxrt10xx/supervisor/usb.c
@@ -31,7 +31,9 @@
 #include "supervisor/linker.h"
 #include "supervisor/usb.h"
 
-STATIC void init_usb_instance(mp_int_t instance) {
+#include "imx_usb.h"
+
+void init_usb_instance(mp_int_t instance) {
     if (instance < 0) {
         return;
     }
@@ -72,9 +74,6 @@ STATIC void init_usb_instance(mp_int_t instance) {
 
     void init_usb_hardware(void) {
         init_usb_instance(CIRCUITPY_USB_DEVICE_INSTANCE);
-        // We can't dynamically start the USB Host port at the moment, so do it
-        // up front.
-        init_usb_instance(CIRCUITPY_USB_HOST_INSTANCE);
     }
 
 // Provide the prototypes for the interrupt handlers. The iMX RT SDK doesn't.
diff --git a/ports/raspberrypi/boards/adafruit_feather_rp2040_usb_host/board.c b/ports/raspberrypi/boards/adafruit_feather_rp2040_usb_host/board.c
index 724fde1d27..1d054a03ac 100644
--- a/ports/raspberrypi/boards/adafruit_feather_rp2040_usb_host/board.c
+++ b/ports/raspberrypi/boards/adafruit_feather_rp2040_usb_host/board.c
@@ -31,7 +31,6 @@
 
 // Use the MP_WEAK supervisor/shared/board.c versions of routines not defined here.
 
-usb_host_port_obj_t _host_port;
 digitalio_digitalinout_obj_t _host_power;
 
 void board_init(void) {
@@ -39,5 +38,5 @@ void board_init(void) {
     common_hal_digitalio_digitalinout_never_reset(&_host_power);
     common_hal_digitalio_digitalinout_switch_to_output(&_host_power, true, DRIVE_MODE_PUSH_PULL);
 
-    common_hal_usb_host_port_construct(&_host_port, &pin_GPIO16, &pin_GPIO17);
+    common_hal_usb_host_port_construct(&pin_GPIO16, &pin_GPIO17);
 }
diff --git a/ports/raspberrypi/common-hal/usb_host/Port.c b/ports/raspberrypi/common-hal/usb_host/Port.c
index 9ad28c73ea..93d19acd69 100644
--- a/ports/raspberrypi/common-hal/usb_host/Port.c
+++ b/ports/raspberrypi/common-hal/usb_host/Port.c
@@ -45,7 +45,7 @@
 
 #include "supervisor/serial.h"
 
-bool usb_host_init;
+usb_host_port_obj_t usb_host_instance;
 
 STATIC PIO pio_instances[2] = {pio0, pio1};
 volatile bool _core1_ready = false;
@@ -102,10 +102,23 @@ STATIC bool _has_program_room(uint8_t pio_index, uint8_t program_size) {
     return pio_can_add_program(pio, &program_struct);
 }
 
-void common_hal_usb_host_port_construct(usb_host_port_obj_t *self, const mcu_pin_obj_t *dp, const mcu_pin_obj_t *dm) {
+usb_host_port_obj_t *common_hal_usb_host_port_construct(const mcu_pin_obj_t *dp, const mcu_pin_obj_t *dm) {
     if (dp->number + 1 != dm->number) {
         raise_ValueError_invalid_pins();
     }
+    usb_host_port_obj_t *self = &usb_host_instance;
+
+    // Return the singleton if given the same pins.
+    if (self->dp != NULL) {
+        if (self->dp != dp || self->dm != dm) {
+            mp_raise_msg_varg(&mp_type_RuntimeError, translate("%q in use"), MP_QSTR_usb_host);
+        }
+        return self;
+    }
+
+    assert_pin_free(dp);
+    assert_pin_free(dm);
+
     pio_usb_configuration_t pio_cfg = PIO_USB_DEFAULT_CONFIG;
     pio_cfg.skip_alarm_pool = true;
     pio_cfg.pin_dp = dp->number;
@@ -122,6 +135,10 @@ void common_hal_usb_host_port_construct(usb_host_port_obj_t *self, const mcu_pin
         mp_raise_RuntimeError(translate("All dma channels in use"));
     }
 
+    self->base.type = &usb_host_port_type;
+    self->dp = dp;
+    self->dm = dm;
+
     PIO tx_pio = pio_instances[pio_cfg.pio_tx_num];
     pio_cfg.sm_tx = pio_claim_unused_sm(tx_pio, false);
     PIO rx_pio = pio_instances[pio_cfg.pio_rx_num];
@@ -151,15 +168,5 @@ void common_hal_usb_host_port_construct(usb_host_port_obj_t *self, const mcu_pin
     tuh_configure(TUH_OPT_RHPORT, TUH_CFGID_RPI_PIO_USB_CONFIGURATION, &pio_cfg);
     tuh_init(TUH_OPT_RHPORT);
 
-    self->init = true;
-    usb_host_init = true;
-}
-
-void common_hal_usb_host_port_deinit(usb_host_port_obj_t *self) {
-    self->init = false;
-    usb_host_init = false;
-}
-
-bool common_hal_usb_host_port_deinited(usb_host_port_obj_t *self) {
-    return !self->init;
+    return self;
 }
diff --git a/ports/raspberrypi/common-hal/usb_host/Port.h b/ports/raspberrypi/common-hal/usb_host/Port.h
index c9294debb2..69a7f8deaf 100644
--- a/ports/raspberrypi/common-hal/usb_host/Port.h
+++ b/ports/raspberrypi/common-hal/usb_host/Port.h
@@ -30,9 +30,6 @@
 
 typedef struct {
     mp_obj_base_t base;
-    bool init;
+    const mcu_pin_obj_t *dp;
+    const mcu_pin_obj_t *dm;
 } usb_host_port_obj_t;
-
-// Cheater state so that the usb module knows if it should return the TinyUSB
-// state.
-extern bool usb_host_init;
diff --git a/shared-bindings/synthio/Synthesizer.c b/shared-bindings/synthio/Synthesizer.c
index 8e186573cd..25d26fc661 100644
--- a/shared-bindings/synthio/Synthesizer.c
+++ b/shared-bindings/synthio/Synthesizer.c
@@ -31,6 +31,7 @@
 #include "py/binary.h"
 #include "py/objproperty.h"
 #include "py/runtime.h"
+#include "py/enum.h"
 #include "shared-bindings/util.h"
 #include "shared-bindings/synthio/Biquad.h"
 #include "shared-bindings/synthio/Synthesizer.h"
@@ -256,7 +257,9 @@ MP_PROPERTY_GETTER(synthio_synthesizer_sample_rate_obj,
     (mp_obj_t)&synthio_synthesizer_get_sample_rate_obj);
 
 //|     pressed: NoteSequence
-//|     """A sequence of the currently pressed notes (read-only property)"""
+//|     """A sequence of the currently pressed notes (read-only property).
+//|
+//|     This does not include notes in the release phase of the envelope."""
 //|
 STATIC mp_obj_t synthio_synthesizer_obj_get_pressed(mp_obj_t self_in) {
     synthio_synthesizer_obj_t *self = MP_OBJ_TO_PTR(self_in);
@@ -268,6 +271,23 @@ MP_DEFINE_CONST_FUN_OBJ_1(synthio_synthesizer_get_pressed_obj, synthio_synthesiz
 MP_PROPERTY_GETTER(synthio_synthesizer_pressed_obj,
     (mp_obj_t)&synthio_synthesizer_get_pressed_obj);
 
+//|     def note_info(self, note: Note) -> Tuple[Optional[EnvelopeState], float]:
+//|         """Get info about a note's current envelope state
+//|
+//|         If the note is currently playing (including in the release phase), the returned value gives the current envelope state and the current envelope value.
+//|
+//|         If the note is not playing on this synthesizer, returns the tuple ``(None, 0.0)``."""
+STATIC mp_obj_t synthio_synthesizer_obj_note_info(mp_obj_t self_in, mp_obj_t note) {
+    synthio_synthesizer_obj_t *self = MP_OBJ_TO_PTR(self_in);
+    check_for_deinit(self);
+    mp_float_t vol = MICROPY_FLOAT_CONST(0.0);
+    envelope_state_e state = common_hal_synthio_synthesizer_note_info(self, note, &vol);
+    return MP_OBJ_NEW_TUPLE(
+        cp_enum_find(&synthio_note_state_type, state),
+        mp_obj_new_float(vol));
+}
+MP_DEFINE_CONST_FUN_OBJ_2(synthio_synthesizer_note_info_obj, synthio_synthesizer_obj_note_info);
+
 //|     blocks: List[BlockInput]
 //|     """A list of blocks to advance whether or not they are associated with a playing note.
 //|
@@ -417,6 +437,7 @@ STATIC const mp_rom_map_elem_t synthio_synthesizer_locals_dict_table[] = {
     { MP_ROM_QSTR(MP_QSTR_sample_rate), MP_ROM_PTR(&synthio_synthesizer_sample_rate_obj) },
     { MP_ROM_QSTR(MP_QSTR_max_polyphony), MP_ROM_INT(CIRCUITPY_SYNTHIO_MAX_CHANNELS) },
     { MP_ROM_QSTR(MP_QSTR_pressed), MP_ROM_PTR(&synthio_synthesizer_pressed_obj) },
+    { MP_ROM_QSTR(MP_QSTR_note_info), MP_ROM_PTR(&synthio_synthesizer_note_info_obj) },
     { MP_ROM_QSTR(MP_QSTR_blocks), MP_ROM_PTR(&synthio_synthesizer_blocks_obj) },
 };
 STATIC MP_DEFINE_CONST_DICT(synthio_synthesizer_locals_dict, synthio_synthesizer_locals_dict_table);
diff --git a/shared-bindings/synthio/Synthesizer.h b/shared-bindings/synthio/Synthesizer.h
index 16543ce2c3..8ae0af3bf3 100644
--- a/shared-bindings/synthio/Synthesizer.h
+++ b/shared-bindings/synthio/Synthesizer.h
@@ -45,3 +45,4 @@ void common_hal_synthio_synthesizer_retrigger(synthio_synthesizer_obj_t *self, m
 void common_hal_synthio_synthesizer_release_all(synthio_synthesizer_obj_t *self);
 mp_obj_t common_hal_synthio_synthesizer_get_pressed_notes(synthio_synthesizer_obj_t *self);
 mp_obj_t common_hal_synthio_synthesizer_get_blocks(synthio_synthesizer_obj_t *self);
+envelope_state_e common_hal_synthio_synthesizer_note_info(synthio_synthesizer_obj_t *self, mp_obj_t note, mp_float_t *vol_out);
diff --git a/shared-bindings/synthio/__init__.c b/shared-bindings/synthio/__init__.c
index b295430b09..52d30cd2c4 100644
--- a/shared-bindings/synthio/__init__.c
+++ b/shared-bindings/synthio/__init__.c
@@ -45,6 +45,32 @@
 
 #include "shared-module/synthio/LFO.h"
 
+//| class EnvelopeState:
+//|     ATTACK: EnvelopeState
+//|     """The note is in its attack phase"""
+//|     DECAY: EnvelopeState
+//|     """The note is in its decay phase"""
+//|     SUSTAIN: EnvelopeState
+//|     """The note is in its sustain phase"""
+//|     RELEASE: EnvelopeState
+//|     """The note is in its release phase"""
+//|
+MAKE_ENUM_VALUE(synthio_note_state_type, note_state, ATTACK, SYNTHIO_ENVELOPE_STATE_ATTACK);
+MAKE_ENUM_VALUE(synthio_note_state_type, note_state, DECAY, SYNTHIO_ENVELOPE_STATE_DECAY);
+MAKE_ENUM_VALUE(synthio_note_state_type, note_state, SUSTAIN, SYNTHIO_ENVELOPE_STATE_SUSTAIN);
+MAKE_ENUM_VALUE(synthio_note_state_type, note_state, RELEASE, SYNTHIO_ENVELOPE_STATE_RELEASE);
+
+MAKE_ENUM_MAP(synthio_note_state) {
+    MAKE_ENUM_MAP_ENTRY(note_state, ATTACK),
+    MAKE_ENUM_MAP_ENTRY(note_state, DECAY),
+    MAKE_ENUM_MAP_ENTRY(note_state, SUSTAIN),
+    MAKE_ENUM_MAP_ENTRY(note_state, RELEASE),
+};
+
+STATIC MP_DEFINE_CONST_DICT(synthio_note_state_locals_dict, synthio_note_state_locals_table);
+MAKE_PRINTER(synthio, synthio_note_state);
+MAKE_ENUM_TYPE(synthio, EnvelopeState, synthio_note_state);
+
 #define default_attack_time (MICROPY_FLOAT_CONST(0.1))
 #define default_decay_time (MICROPY_FLOAT_CONST(0.05))
 #define default_release_time (MICROPY_FLOAT_CONST(0.2))
@@ -316,6 +342,7 @@ STATIC const mp_rom_map_elem_t synthio_module_globals_table[] = {
     { MP_ROM_QSTR(MP_QSTR_MathOperation), MP_ROM_PTR(&synthio_math_operation_type) },
     { MP_ROM_QSTR(MP_QSTR_MidiTrack), MP_ROM_PTR(&synthio_miditrack_type) },
     { MP_ROM_QSTR(MP_QSTR_Note), MP_ROM_PTR(&synthio_note_type) },
+    { MP_ROM_QSTR(MP_QSTR_EnvelopeState), MP_ROM_PTR(&synthio_note_state_type) },
     { MP_ROM_QSTR(MP_QSTR_LFO), MP_ROM_PTR(&synthio_lfo_type) },
     { MP_ROM_QSTR(MP_QSTR_Synthesizer), MP_ROM_PTR(&synthio_synthesizer_type) },
     { MP_ROM_QSTR(MP_QSTR_from_file), MP_ROM_PTR(&synthio_from_file_obj) },
diff --git a/shared-bindings/synthio/__init__.h b/shared-bindings/synthio/__init__.h
index 2315d92e58..4a44277e85 100644
--- a/shared-bindings/synthio/__init__.h
+++ b/shared-bindings/synthio/__init__.h
@@ -29,10 +29,16 @@
 #include "py/objnamedtuple.h"
 #include "py/enum.h"
 
+typedef enum {
+    SYNTHIO_ENVELOPE_STATE_ATTACK, SYNTHIO_ENVELOPE_STATE_DECAY,
+    SYNTHIO_ENVELOPE_STATE_SUSTAIN, SYNTHIO_ENVELOPE_STATE_RELEASE
+} envelope_state_e;
+
 typedef enum synthio_bend_mode_e {
     SYNTHIO_BEND_MODE_STATIC, SYNTHIO_BEND_MODE_VIBRATO, SYNTHIO_BEND_MODE_SWEEP, SYNTHIO_BEND_MODE_SWEEP_IN
 } synthio_bend_mode_t;
 
+extern const mp_obj_type_t synthio_note_state_type;
 extern const cp_enum_obj_t bend_mode_VIBRATO_obj;
 extern const mp_obj_type_t synthio_bend_mode_type;
 typedef struct synthio_synth synthio_synth_t;
diff --git a/shared-bindings/usb_host/Port.c b/shared-bindings/usb_host/Port.c
index 53b1fec54f..9be6da9df3 100644
--- a/shared-bindings/usb_host/Port.c
+++ b/shared-bindings/usb_host/Port.c
@@ -35,59 +35,36 @@
 //|
 //|     def __init__(self, dp: microcontroller.Pin, dm: microcontroller.Pin) -> None:
 //|         """Create a USB host port on the given pins. Access attached devices
-//|         through the `usb` module. Keep this object referenced while
-//|         interacting with devices, otherwise they will be disconnected.
+//|         through the `usb` module.
+//|
+//|         The resulting object lives longer than the CircuitPython VM so that
+//|         USB devices such as keyboards can continue to be used. Subsequent
+//|         calls to this constructor will return the same object and *not*
+//|         reinitialize the USB host port. It will raise an exception when
+//|         given different arguments from the first successful call.
 //|
 //|         :param ~microcontroller.Pin dp: The data plus pin
 //|         :param ~microcontroller.Pin dm: The data minus pin
 //|         """
 //|         ...
+//|
 STATIC mp_obj_t usb_host_port_make_new(const mp_obj_type_t *type,
     size_t n_args, size_t n_kw, const mp_obj_t *args) {
     // check number of arguments
     mp_arg_check_num(n_args, n_kw, 2, 2, false);
 
-    const mcu_pin_obj_t *dp = validate_obj_is_free_pin(args[0], MP_QSTR_dp);
-    const mcu_pin_obj_t *dm = validate_obj_is_free_pin(args[1], MP_QSTR_dm);
+    const mcu_pin_obj_t *dp = validate_obj_is_pin(args[0], MP_QSTR_dp);
+    const mcu_pin_obj_t *dm = validate_obj_is_pin(args[1], MP_QSTR_dm);
 
-    usb_host_port_obj_t *self = m_new_obj(usb_host_port_obj_t);
-    self->base.type = &usb_host_port_type;
-    common_hal_usb_host_port_construct(self, dp, dm);
+    // Pin in use checks happen in the implementation so they can be ignored
+    // when returning the singleton.
+
+    usb_host_port_obj_t *self = common_hal_usb_host_port_construct(dp, dm);
 
     return (mp_obj_t)self;
 }
 
-//|     def deinit(self) -> None:
-//|         """Turn off the USB host port and release the pins for other use."""
-//|         ...
-STATIC mp_obj_t usb_host_port_obj_deinit(mp_obj_t self_in) {
-    usb_host_port_obj_t *self = MP_OBJ_TO_PTR(self_in);
-    common_hal_usb_host_port_deinit(self);
-    return mp_const_none;
-}
-MP_DEFINE_CONST_FUN_OBJ_1(usb_host_port_deinit_obj, usb_host_port_obj_deinit);
-
-//|     def __enter__(self) -> Port:
-//|         """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 usb_host_port_obj___exit__(size_t n_args, const mp_obj_t *args) {
-    (void)n_args;
-    common_hal_usb_host_port_deinit(MP_OBJ_TO_PTR(args[0]));
-    return mp_const_none;
-}
-STATIC MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(usb_host_port_obj___exit___obj, 4, 4, usb_host_port_obj___exit__);
-
 STATIC const mp_rom_map_elem_t usb_host_port_locals_dict_table[] = {
-    { MP_ROM_QSTR(MP_QSTR_deinit),             MP_ROM_PTR(&usb_host_port_deinit_obj) },
-    { MP_ROM_QSTR(MP_QSTR___enter__),          MP_ROM_PTR(&default___enter___obj) },
-    { MP_ROM_QSTR(MP_QSTR___exit__),           MP_ROM_PTR(&usb_host_port_obj___exit___obj) },
 };
 
 STATIC MP_DEFINE_CONST_DICT(usb_host_port_locals_dict, usb_host_port_locals_dict_table);
diff --git a/shared-bindings/usb_host/Port.h b/shared-bindings/usb_host/Port.h
index 68645d1146..ba8d298517 100644
--- a/shared-bindings/usb_host/Port.h
+++ b/shared-bindings/usb_host/Port.h
@@ -35,8 +35,10 @@
 
 extern const mp_obj_type_t usb_host_port_type;
 
-void common_hal_usb_host_port_construct(usb_host_port_obj_t *self, const mcu_pin_obj_t *dp, const mcu_pin_obj_t *dm);
-void common_hal_usb_host_port_deinit(usb_host_port_obj_t *self);
-bool common_hal_usb_host_port_deinited(usb_host_port_obj_t *self);
+// This is unique to common_hal constructs because it returns a globally stored
+// object instead of taking on in that may be on the heap. This allows the
+// method to check the internals of the global object against the given arguments
+// to determine whether to return the singleton or raise an exception.
+usb_host_port_obj_t *common_hal_usb_host_port_construct(const mcu_pin_obj_t *dp, const mcu_pin_obj_t *dm);
 
 #endif  // MICROPY_INCLUDED_SHARED_BINDINGS_USB_HOST_PORT_H
diff --git a/shared-module/synthio/Synthesizer.c b/shared-module/synthio/Synthesizer.c
index 7dc888dfd0..672ac5b9e6 100644
--- a/shared-module/synthio/Synthesizer.c
+++ b/shared-module/synthio/Synthesizer.c
@@ -185,6 +185,17 @@ mp_obj_t common_hal_synthio_synthesizer_get_pressed_notes(synthio_synthesizer_ob
     return MP_OBJ_FROM_PTR(result);
 }
 
+envelope_state_e common_hal_synthio_synthesizer_note_info(synthio_synthesizer_obj_t *self, mp_obj_t note, mp_float_t *vol_out) {
+    for (int chan = 0; chan < CIRCUITPY_SYNTHIO_MAX_CHANNELS; chan++) {
+        if (self->synth.span.note_obj[chan] == note) {
+            *vol_out = self->synth.envelope_state[chan].level / 32767.;
+            return self->synth.envelope_state[chan].state;
+        }
+    }
+    return (envelope_state_e) - 1;
+}
+
+
 mp_obj_t common_hal_synthio_synthesizer_get_blocks(synthio_synthesizer_obj_t *self) {
     return self->blocks;
 }
diff --git a/shared-module/synthio/__init__.h b/shared-module/synthio/__init__.h
index 9e4db96d50..178e4fb866 100644
--- a/shared-module/synthio/__init__.h
+++ b/shared-module/synthio/__init__.h
@@ -35,6 +35,7 @@
 #define SYNTHIO_FREQUENCY_SHIFT (16)
 
 #include "shared-module/audiocore/__init__.h"
+#include "shared-bindings/synthio/__init__.h"
 
 typedef struct {
     uint16_t dur;
@@ -49,11 +50,6 @@ typedef struct {
     uint16_t attack_level, sustain_level;
 } synthio_envelope_definition_t;
 
-typedef enum {
-    SYNTHIO_ENVELOPE_STATE_ATTACK, SYNTHIO_ENVELOPE_STATE_DECAY,
-    SYNTHIO_ENVELOPE_STATE_SUSTAIN, SYNTHIO_ENVELOPE_STATE_RELEASE
-} envelope_state_e;
-
 typedef struct {
     int16_t level;
     uint16_t substep;
diff --git a/supervisor/shared/usb/tusb_config.h b/supervisor/shared/usb/tusb_config.h
index 19f5c0a0ce..d097005aac 100644
--- a/supervisor/shared/usb/tusb_config.h
+++ b/supervisor/shared/usb/tusb_config.h
@@ -152,7 +152,8 @@ extern "C" {
 #endif
 
 #define CFG_TUH_HID                 2
-#define CFG_TUH_HUB                 1
+// 2 hubs so we can support "7 port" hubs which have two internal hubs.
+#define CFG_TUH_HUB                 2
 #define CFG_TUH_CDC                 0
 #define CFG_TUH_MSC                 0
 #define CFG_TUH_VENDOR              0
diff --git a/tests/circuitpython/synthio_note_info.py b/tests/circuitpython/synthio_note_info.py
new file mode 100644
index 0000000000..4d4e7a59ae
--- /dev/null
+++ b/tests/circuitpython/synthio_note_info.py
@@ -0,0 +1,17 @@
+from synthio import Synthesizer, Note, Envelope
+from audiocore import get_buffer
+
+s = Synthesizer()
+n = Note(440, envelope=Envelope())
+print("{} {:.2f}".format(*s.note_info(n)))
+s.press(n)
+print("press")
+for _ in range(9):
+    print("{} {:.2f}".format(*s.note_info(n)))
+    get_buffer(s)
+
+s.release(n)
+print("release")
+for _ in range(11):
+    print("{} {:.2f}".format(*s.note_info(n)))
+    get_buffer(s)
diff --git a/tests/circuitpython/synthio_note_info.py.exp b/tests/circuitpython/synthio_note_info.py.exp
new file mode 100644
index 0000000000..cd75174a11
--- /dev/null
+++ b/tests/circuitpython/synthio_note_info.py.exp
@@ -0,0 +1,23 @@
+None 0.00
+press
+synthio.EnvelopeState.ATTACK 0.23
+synthio.EnvelopeState.ATTACK 0.46
+synthio.EnvelopeState.ATTACK 0.70
+synthio.EnvelopeState.ATTACK 0.93
+synthio.EnvelopeState.DECAY 1.00
+synthio.EnvelopeState.DECAY 0.91
+synthio.EnvelopeState.DECAY 0.81
+synthio.EnvelopeState.SUSTAIN 0.80
+synthio.EnvelopeState.SUSTAIN 0.80
+release
+synthio.EnvelopeState.RELEASE 0.80
+synthio.EnvelopeState.RELEASE 0.71
+synthio.EnvelopeState.RELEASE 0.61
+synthio.EnvelopeState.RELEASE 0.52
+synthio.EnvelopeState.RELEASE 0.43
+synthio.EnvelopeState.RELEASE 0.34
+synthio.EnvelopeState.RELEASE 0.24
+synthio.EnvelopeState.RELEASE 0.15
+synthio.EnvelopeState.RELEASE 0.06
+synthio.EnvelopeState.RELEASE 0.00
+None 0.00
diff --git a/tests/cmdline/cmd_showbc.py.exp b/tests/cmdline/cmd_showbc.py.exp
index 22712b79ee..c3dbfd74f8 100644
--- a/tests/cmdline/cmd_showbc.py.exp
+++ b/tests/cmdline/cmd_showbc.py.exp
@@ -1,7 +1,6 @@
 File cmdline/cmd_showbc.py, code block '<module>' (descriptor: \.\+, bytecode @\.\+ bytes)
 Raw bytecode (code_info_size=\\d\+, bytecode_size=\\d\+):
 ########
-\.\+63
 arg names:
 (N_STATE 3)
 (N_EXC_STACK 0)