From 755b86e38bef1d3adf05f146e47b9499385313b9 Mon Sep 17 00:00:00 2001
From: Hierophect <hierophect@gmail.com>
Date: Thu, 18 Jul 2019 17:17:46 -0400
Subject: [PATCH] Deinit-capable USB on 411

---
 ports/stm32f4/Makefile                        |  26 +-
 ports/stm32f4/boards/STM32F411VETx_FLASH.ld   | 189 ++++++++
 .../boards/nucleo_f411re/stm32f4xx_hal_conf.h | 439 ------------------
 ports/stm32f4/boards/nucleo_f412zg/board.c    |  38 --
 .../boards/nucleo_f412zg/mpconfigboard.h      |  38 --
 .../boards/nucleo_f412zg/mpconfigboard.mk     |  11 -
 .../board.c                                   |   0
 .../mpconfigboard.h                           |   2 +-
 .../mpconfigboard.mk                          |   2 +-
 ports/stm32f4/boards/stm32f411_disco/pins.c   |  90 ++++
 .../stm32f4xx_hal_conf.h                      |  10 +-
 .../stm32f411_disco/stm32f4xx_hal_msp.c       | 427 +++++++++++++++++
 .../boards/stm32f411_disco/stm32f4xx_it.c     | 217 +++++++++
 .../boards/stm32f411_disco/stm32f4xx_it.h     |  70 +++
 ports/stm32f4/mpconfigport.mk                 |   6 +-
 ports/stm32f4/supervisor/port.c               | 355 +++++---------
 ports/stm32f4/supervisor/port_412.c           | 328 +++++++++++++
 ports/stm32f4/supervisor/usb.c                |  21 +-
 supervisor/supervisor.mk                      |   2 +-
 19 files changed, 1486 insertions(+), 785 deletions(-)
 create mode 100644 ports/stm32f4/boards/STM32F411VETx_FLASH.ld
 delete mode 100644 ports/stm32f4/boards/nucleo_f411re/stm32f4xx_hal_conf.h
 delete mode 100644 ports/stm32f4/boards/nucleo_f412zg/board.c
 delete mode 100644 ports/stm32f4/boards/nucleo_f412zg/mpconfigboard.h
 delete mode 100644 ports/stm32f4/boards/nucleo_f412zg/mpconfigboard.mk
 rename ports/stm32f4/boards/{nucleo_f411re => stm32f411_disco}/board.c (100%)
 rename ports/stm32f4/boards/{nucleo_f411re => stm32f411_disco}/mpconfigboard.h (95%)
 rename ports/stm32f4/boards/{nucleo_f411re => stm32f411_disco}/mpconfigboard.mk (83%)
 create mode 100644 ports/stm32f4/boards/stm32f411_disco/pins.c
 rename ports/stm32f4/boards/{nucleo_f412zg => stm32f411_disco}/stm32f4xx_hal_conf.h (98%)
 create mode 100644 ports/stm32f4/boards/stm32f411_disco/stm32f4xx_hal_msp.c
 create mode 100644 ports/stm32f4/boards/stm32f411_disco/stm32f4xx_it.c
 create mode 100644 ports/stm32f4/boards/stm32f411_disco/stm32f4xx_it.h
 create mode 100644 ports/stm32f4/supervisor/port_412.c

diff --git a/ports/stm32f4/Makefile b/ports/stm32f4/Makefile
index c41c277e64..c96b3201ab 100755
--- a/ports/stm32f4/Makefile
+++ b/ports/stm32f4/Makefile
@@ -88,17 +88,15 @@ else
 endif
 
 # C defines
-C_DEFS =  \
--DUSE_FULL_LL_DRIVER \
--DUSE_HAL_DRIVER \
--DSTM32F412Zx \
+#C_DEFS =  \
+#-DUSE_FULL_LL_DRIVER \
+#-DUSE_HAL_DRIVER \
+#-DSTM32F412Zx \
 
 # C defines
-#C_DEFS =  \
-#-DUSE_HAL_DRIVER \
-#-DSTM32F411xE \
-#-DUSE_HAL_DRIVER \
-#-DSTM32F411xE
+C_DEFS =  \
+	-DUSE_HAL_DRIVER \
+	-DSTM32F411xE \
 
 #TODO: Add ASM Flags? -Werror
 CFLAGS += $(INC) -Wall -std=gnu11 -nostdlib $(BASE_CFLAGS) $(C_DEFS) $(CFLAGS_MOD) $(COPT)
@@ -142,7 +140,6 @@ CFLAGS += -DCFG_TUSB_MCU=OPT_MCU_STM32F4 -DCFG_TUD_CDC_RX_BUFSIZE=1024 -DCFG_TUD
 ######################################
 
 SRC_STM32 = \
-	boards/$(BOARD)/stm32f4xx_it.c \
 	boards/$(BOARD)/stm32f4xx_hal_msp.c \
 	stm32cube/STM32F4xx_HAL_Driver/Src/stm32f4xx_ll_gpio.c \
 	stm32cube/STM32F4xx_HAL_Driver/Src/stm32f4xx_hal_pcd.c \
@@ -179,7 +176,6 @@ SRC_STM32 = \
 	stm32cube/STM32F4xx_HAL_Driver/Src/stm32f4xx_hal_exti.c \
 	system_stm32f4xx.c  
 
-
 SRC_C += \
 	background.c \
 	fatfs_port.c \
@@ -198,15 +194,15 @@ SRC_C += \
 	lib/utils/pyexec.c \
 	lib/utils/stdout_helpers.c \
 	lib/utils/sys_stdio_mphal.c \
-	peripherals/stm32f4/stm32f412zg/pins.c \
 	supervisor/shared/memory.c \
-	#lib/tinyusb/src/portable/st/stm32f4/dcd_stm32f4.c
+	lib/tinyusb/src/portable/st/stm32f4/dcd_stm32f4.c
 
-#
+#	peripherals/stm32f4/stm32f412zg/pins.c \
 
 SRC_S = \
 	supervisor/cpu.s \
-	boards/startup_stm32f412zx.s
+	boards/startup_stm32f411xe.s
+#	boards/startup_stm32f412zx.s
 #	boards/startup_stm32f411xe.s
 	
 #boards/startup_stm32f412zx.s
diff --git a/ports/stm32f4/boards/STM32F411VETx_FLASH.ld b/ports/stm32f4/boards/STM32F411VETx_FLASH.ld
new file mode 100644
index 0000000000..a3c3594a94
--- /dev/null
+++ b/ports/stm32f4/boards/STM32F411VETx_FLASH.ld
@@ -0,0 +1,189 @@
+/*
+******************************************************************************
+**
+
+**  File        : LinkerScript.ld
+**
+**  Author		: Auto-generated by Ac6 System Workbench
+**
+**  Abstract    : Linker script for STM32F411VETx series
+**                512Kbytes FLASH and 128Kbytes RAM
+**
+**                Set heap size, stack size and stack location according
+**                to application requirements.
+**
+**                Set memory bank area and size if external memory is used.
+**
+**  Target      : STMicroelectronics STM32
+**
+**  Distribution: The file is distributed “as is,” without any warranty
+**                of any kind.
+**
+*****************************************************************************
+** @attention
+**
+** <h2><center>&copy; COPYRIGHT(c) 2014 Ac6</center></h2>
+**
+** Redistribution and use in source and binary forms, with or without modification,
+** are permitted provided that the following conditions are met:
+**   1. Redistributions of source code must retain the above copyright notice,
+**      this list of conditions and the following disclaimer.
+**   2. Redistributions in binary form must reproduce the above copyright notice,
+**      this list of conditions and the following disclaimer in the documentation
+**      and/or other materials provided with the distribution.
+**   3. Neither the name of Ac6 nor the names of its contributors
+**      may be used to endorse or promote products derived from this software
+**      without specific prior written permission.
+**
+** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+** AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+** IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+** DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+** FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+** DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+** SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+** CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+** OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+**
+*****************************************************************************
+*/
+
+/* Entry Point */
+ENTRY(Reset_Handler)
+
+/* Highest address of the user mode stack */
+_estack = 0x20020000;    /* end of RAM */
+/* Generate a link error if heap and stack don't fit into RAM */
+_Min_Heap_Size = 0x200;      /* required amount of heap  */
+_Min_Stack_Size = 0x400; /* required amount of stack */
+
+/* Specify the memory areas */
+MEMORY
+{
+RAM (xrw)      : ORIGIN = 0x20000000, LENGTH = 128K
+FLASH (rx)      : ORIGIN = 0x8000000, LENGTH = 512K
+}
+
+/* Define output sections */
+SECTIONS
+{
+  /* The startup code goes first into FLASH */
+  .isr_vector :
+  {
+    . = ALIGN(4);
+    KEEP(*(.isr_vector)) /* Startup code */
+    . = ALIGN(4);
+  } >FLASH
+
+  /* The program code and other data goes into FLASH */
+  .text :
+  {
+    . = ALIGN(4);
+    *(.text)           /* .text sections (code) */
+    *(.text*)          /* .text* sections (code) */
+    *(.glue_7)         /* glue arm to thumb code */
+    *(.glue_7t)        /* glue thumb to arm code */
+    *(.eh_frame)
+
+    KEEP (*(.init))
+    KEEP (*(.fini))
+
+    . = ALIGN(4);
+    _etext = .;        /* define a global symbols at end of code */
+  } >FLASH
+
+  /* Constant data goes into FLASH */
+  .rodata :
+  {
+    . = ALIGN(4);
+    *(.rodata)         /* .rodata sections (constants, strings, etc.) */
+    *(.rodata*)        /* .rodata* sections (constants, strings, etc.) */
+    . = ALIGN(4);
+  } >FLASH
+
+  .ARM.extab   : { *(.ARM.extab* .gnu.linkonce.armextab.*) } >FLASH
+  .ARM : {
+    __exidx_start = .;
+    *(.ARM.exidx*)
+    __exidx_end = .;
+  } >FLASH
+
+  .preinit_array     :
+  {
+    PROVIDE_HIDDEN (__preinit_array_start = .);
+    KEEP (*(.preinit_array*))
+    PROVIDE_HIDDEN (__preinit_array_end = .);
+  } >FLASH
+  .init_array :
+  {
+    PROVIDE_HIDDEN (__init_array_start = .);
+    KEEP (*(SORT(.init_array.*)))
+    KEEP (*(.init_array*))
+    PROVIDE_HIDDEN (__init_array_end = .);
+  } >FLASH
+  .fini_array :
+  {
+    PROVIDE_HIDDEN (__fini_array_start = .);
+    KEEP (*(SORT(.fini_array.*)))
+    KEEP (*(.fini_array*))
+    PROVIDE_HIDDEN (__fini_array_end = .);
+  } >FLASH
+
+  /* used by the startup to initialize data */
+  _sidata = LOADADDR(.data);
+
+  /* Initialized data sections goes into RAM, load LMA copy after code */
+  .data : 
+  {
+    . = ALIGN(4);
+    _sdata = .;        /* create a global symbol at data start */
+    *(.data)           /* .data sections */
+    *(.data*)          /* .data* sections */
+
+    . = ALIGN(4);
+    _edata = .;        /* define a global symbol at data end */
+  } >RAM AT> FLASH
+
+  
+  /* Uninitialized data section */
+  . = ALIGN(4);
+  .bss :
+  {
+    /* This is used by the startup in order to initialize the .bss secion */
+    _sbss = .;         /* define a global symbol at bss start */
+    __bss_start__ = _sbss;
+    *(.bss)
+    *(.bss*)
+    *(COMMON)
+
+    . = ALIGN(4);
+    _ebss = .;         /* define a global symbol at bss end */
+    __bss_end__ = _ebss;
+  } >RAM
+
+  /* User_heap_stack section, used to check that there is enough RAM left */
+  ._user_heap_stack :
+  {
+    . = ALIGN(8);
+    PROVIDE ( end = . );
+    PROVIDE ( _end = . );
+    . = . + _Min_Heap_Size;
+    . = . + _Min_Stack_Size;
+    . = ALIGN(8);
+  } >RAM
+
+  
+
+  /* Remove information from the standard libraries */
+  /DISCARD/ :
+  {
+    libc.a ( * )
+    libm.a ( * )
+    libgcc.a ( * )
+  }
+
+  .ARM.attributes 0 : { *(.ARM.attributes) }
+}
+
+
diff --git a/ports/stm32f4/boards/nucleo_f411re/stm32f4xx_hal_conf.h b/ports/stm32f4/boards/nucleo_f411re/stm32f4xx_hal_conf.h
deleted file mode 100644
index 1cceba898b..0000000000
--- a/ports/stm32f4/boards/nucleo_f411re/stm32f4xx_hal_conf.h
+++ /dev/null
@@ -1,439 +0,0 @@
-/**
-  ******************************************************************************
-  * @file    stm32f4xx_hal_conf_template.h
-  * @author  MCD Application Team
-  * @brief   HAL configuration template file. 
-  *          This file should be copied to the application folder and renamed
-  *          to stm32f4xx_hal_conf.h.
-  ******************************************************************************
-  * @attention
-  *
-  * <h2><center>&copy; Copyright (c) 2017 STMicroelectronics.
-  * All rights reserved.</center></h2>
-  *
-  * This software component is licensed by ST under BSD 3-Clause license,
-  * the "License"; You may not use this file except in compliance with the
-  * License. You may obtain a copy of the License at:
-  *                        opensource.org/licenses/BSD-3-Clause
-  *
-  ******************************************************************************
-  */ 
-
-/* Define to prevent recursive inclusion -------------------------------------*/
-#ifndef __STM32F4xx_HAL_CONF_H
-#define __STM32F4xx_HAL_CONF_H
-
-#ifdef __cplusplus
- extern "C" {
-#endif
-
-/* Exported types ------------------------------------------------------------*/
-/* Exported constants --------------------------------------------------------*/
-
-/* ########################## Module Selection ############################## */
-/**
-  * @brief This is the list of modules to be used in the HAL driver 
-  */
-#define HAL_MODULE_ENABLED  
-
-  /* #define HAL_ADC_MODULE_ENABLED   */
-/* #define HAL_CRYP_MODULE_ENABLED   */
-/* #define HAL_CAN_MODULE_ENABLED   */
-/* #define HAL_CRC_MODULE_ENABLED   */
-/* #define HAL_CRYP_MODULE_ENABLED   */
-/* #define HAL_DAC_MODULE_ENABLED   */
-/* #define HAL_DCMI_MODULE_ENABLED   */
-/* #define HAL_DMA2D_MODULE_ENABLED   */
-/* #define HAL_ETH_MODULE_ENABLED   */
-/* #define HAL_NAND_MODULE_ENABLED   */
-/* #define HAL_NOR_MODULE_ENABLED   */
-/* #define HAL_PCCARD_MODULE_ENABLED   */
-/* #define HAL_SRAM_MODULE_ENABLED   */
-/* #define HAL_SDRAM_MODULE_ENABLED   */
-/* #define HAL_HASH_MODULE_ENABLED   */
-/* #define HAL_I2C_MODULE_ENABLED   */
-/* #define HAL_I2S_MODULE_ENABLED   */
-/* #define HAL_IWDG_MODULE_ENABLED   */
-/* #define HAL_LTDC_MODULE_ENABLED   */
-/* #define HAL_RNG_MODULE_ENABLED   */
-/* #define HAL_RTC_MODULE_ENABLED   */
-/* #define HAL_SAI_MODULE_ENABLED   */
-/* #define HAL_SD_MODULE_ENABLED   */
-/* #define HAL_MMC_MODULE_ENABLED   */
-/* #define HAL_SPI_MODULE_ENABLED   */
-/* #define HAL_TIM_MODULE_ENABLED   */
-#define HAL_UART_MODULE_ENABLED
-/* #define HAL_USART_MODULE_ENABLED   */
-/* #define HAL_IRDA_MODULE_ENABLED   */
-/* #define HAL_SMARTCARD_MODULE_ENABLED   */
-/* #define HAL_WWDG_MODULE_ENABLED   */
-/* #define HAL_PCD_MODULE_ENABLED   */
-/* #define HAL_HCD_MODULE_ENABLED   */
-/* #define HAL_DSI_MODULE_ENABLED   */
-/* #define HAL_QSPI_MODULE_ENABLED   */
-/* #define HAL_QSPI_MODULE_ENABLED   */
-/* #define HAL_CEC_MODULE_ENABLED   */
-/* #define HAL_FMPI2C_MODULE_ENABLED   */
-/* #define HAL_SPDIFRX_MODULE_ENABLED   */
-/* #define HAL_DFSDM_MODULE_ENABLED   */
-/* #define HAL_LPTIM_MODULE_ENABLED   */
-/* #define HAL_EXTI_MODULE_ENABLED   */
-#define HAL_GPIO_MODULE_ENABLED
-#define HAL_EXTI_MODULE_ENABLED
-#define HAL_DMA_MODULE_ENABLED
-#define HAL_RCC_MODULE_ENABLED
-#define HAL_FLASH_MODULE_ENABLED
-#define HAL_PWR_MODULE_ENABLED
-#define HAL_CORTEX_MODULE_ENABLED
-
-/* ########################## HSE/HSI Values adaptation ##################### */
-/**
-  * @brief Adjust the value of External High Speed oscillator (HSE) used in your application.
-  *        This value is used by the RCC HAL module to compute the system frequency
-  *        (when HSE is used as system clock source, directly or through the PLL).  
-  */
-#if !defined  (HSE_VALUE) 
-  #define HSE_VALUE    ((uint32_t)8000000U) /*!< Value of the External oscillator in Hz */
-#endif /* HSE_VALUE */
-
-#if !defined  (HSE_STARTUP_TIMEOUT)
-  #define HSE_STARTUP_TIMEOUT    ((uint32_t)100U)   /*!< Time out for HSE start up, in ms */
-#endif /* HSE_STARTUP_TIMEOUT */
-
-/**
-  * @brief Internal High Speed oscillator (HSI) value.
-  *        This value is used by the RCC HAL module to compute the system frequency
-  *        (when HSI is used as system clock source, directly or through the PLL). 
-  */
-#if !defined  (HSI_VALUE)
-  #define HSI_VALUE    ((uint32_t)16000000U) /*!< Value of the Internal oscillator in Hz*/
-#endif /* HSI_VALUE */
-
-/**
-  * @brief Internal Low Speed oscillator (LSI) value.
-  */
-#if !defined  (LSI_VALUE) 
- #define LSI_VALUE  ((uint32_t)32000U)       /*!< LSI Typical Value in Hz*/
-#endif /* LSI_VALUE */                      /*!< Value of the Internal Low Speed oscillator in Hz
-                                             The real value may vary depending on the variations
-                                             in voltage and temperature.*/
-/**
-  * @brief External Low Speed oscillator (LSE) value.
-  */
-#if !defined  (LSE_VALUE)
- #define LSE_VALUE  ((uint32_t)32768U)    /*!< Value of the External Low Speed oscillator in Hz */
-#endif /* LSE_VALUE */
-
-#if !defined  (LSE_STARTUP_TIMEOUT)
-  #define LSE_STARTUP_TIMEOUT    ((uint32_t)5000U)   /*!< Time out for LSE start up, in ms */
-#endif /* LSE_STARTUP_TIMEOUT */
-
-/**
-  * @brief External clock source for I2S peripheral
-  *        This value is used by the I2S HAL module to compute the I2S clock source 
-  *        frequency, this source is inserted directly through I2S_CKIN pad. 
-  */
-#if !defined  (EXTERNAL_CLOCK_VALUE)
-  #define EXTERNAL_CLOCK_VALUE    ((uint32_t)12288000U) /*!< Value of the External audio frequency in Hz*/
-#endif /* EXTERNAL_CLOCK_VALUE */
-
-/* Tip: To avoid modifying this file each time you need to use different HSE,
-   ===  you can define the HSE value in your toolchain compiler preprocessor. */
-
-/* ########################### System Configuration ######################### */
-/**
-  * @brief This is the HAL system configuration section
-  */
-#define  VDD_VALUE		      ((uint32_t)3300U) /*!< Value of VDD in mv */           
-#define  TICK_INT_PRIORITY            ((uint32_t)0U)   /*!< tick interrupt priority */            
-#define  USE_RTOS                     0U     
-#define  PREFETCH_ENABLE              1U
-#define  INSTRUCTION_CACHE_ENABLE     1U
-#define  DATA_CACHE_ENABLE            1U
-
-/* ########################## Assert Selection ############################## */
-/**
-  * @brief Uncomment the line below to expanse the "assert_param" macro in the 
-  *        HAL drivers code
-  */
-/* #define USE_FULL_ASSERT    1U */
-
-/* ################## Ethernet peripheral configuration ##################### */
-
-/* Section 1 : Ethernet peripheral configuration */
-
-/* MAC ADDRESS: MAC_ADDR0:MAC_ADDR1:MAC_ADDR2:MAC_ADDR3:MAC_ADDR4:MAC_ADDR5 */
-#define MAC_ADDR0   2U
-#define MAC_ADDR1   0U
-#define MAC_ADDR2   0U
-#define MAC_ADDR3   0U
-#define MAC_ADDR4   0U
-#define MAC_ADDR5   0U
-
-/* Definition of the Ethernet driver buffers size and count */   
-#define ETH_RX_BUF_SIZE                ETH_MAX_PACKET_SIZE /* buffer size for receive               */
-#define ETH_TX_BUF_SIZE                ETH_MAX_PACKET_SIZE /* buffer size for transmit              */
-#define ETH_RXBUFNB                    ((uint32_t)4U)       /* 4 Rx buffers of size ETH_RX_BUF_SIZE  */
-#define ETH_TXBUFNB                    ((uint32_t)4U)       /* 4 Tx buffers of size ETH_TX_BUF_SIZE  */
-
-/* Section 2: PHY configuration section */
-
-/* DP83848_PHY_ADDRESS Address*/ 
-#define DP83848_PHY_ADDRESS           0x01U
-/* PHY Reset delay these values are based on a 1 ms Systick interrupt*/ 
-#define PHY_RESET_DELAY                 ((uint32_t)0x000000FFU)
-/* PHY Configuration delay */
-#define PHY_CONFIG_DELAY                ((uint32_t)0x00000FFFU)
-
-#define PHY_READ_TO                     ((uint32_t)0x0000FFFFU)
-#define PHY_WRITE_TO                    ((uint32_t)0x0000FFFFU)
-
-/* Section 3: Common PHY Registers */
-
-#define PHY_BCR                         ((uint16_t)0x0000U)    /*!< Transceiver Basic Control Register   */
-#define PHY_BSR                         ((uint16_t)0x0001U)    /*!< Transceiver Basic Status Register    */
- 
-#define PHY_RESET                       ((uint16_t)0x8000U)  /*!< PHY Reset */
-#define PHY_LOOPBACK                    ((uint16_t)0x4000U)  /*!< Select loop-back mode */
-#define PHY_FULLDUPLEX_100M             ((uint16_t)0x2100U)  /*!< Set the full-duplex mode at 100 Mb/s */
-#define PHY_HALFDUPLEX_100M             ((uint16_t)0x2000U)  /*!< Set the half-duplex mode at 100 Mb/s */
-#define PHY_FULLDUPLEX_10M              ((uint16_t)0x0100U)  /*!< Set the full-duplex mode at 10 Mb/s  */
-#define PHY_HALFDUPLEX_10M              ((uint16_t)0x0000U)  /*!< Set the half-duplex mode at 10 Mb/s  */
-#define PHY_AUTONEGOTIATION             ((uint16_t)0x1000U)  /*!< Enable auto-negotiation function     */
-#define PHY_RESTART_AUTONEGOTIATION     ((uint16_t)0x0200U)  /*!< Restart auto-negotiation function    */
-#define PHY_POWERDOWN                   ((uint16_t)0x0800U)  /*!< Select the power down mode           */
-#define PHY_ISOLATE                     ((uint16_t)0x0400U)  /*!< Isolate PHY from MII                 */
-
-#define PHY_AUTONEGO_COMPLETE           ((uint16_t)0x0020U)  /*!< Auto-Negotiation process completed   */
-#define PHY_LINKED_STATUS               ((uint16_t)0x0004U)  /*!< Valid link established               */
-#define PHY_JABBER_DETECTION            ((uint16_t)0x0002U)  /*!< Jabber condition detected            */
-  
-/* Section 4: Extended PHY Registers */
-#define PHY_SR                          ((uint16_t)0x10U)    /*!< PHY status register Offset                      */
-
-#define PHY_SPEED_STATUS                ((uint16_t)0x0002U)  /*!< PHY Speed mask                                  */
-#define PHY_DUPLEX_STATUS               ((uint16_t)0x0004U)  /*!< PHY Duplex mask                                 */
-
-/* ################## SPI peripheral configuration ########################## */
-
-/* CRC FEATURE: Use to activate CRC feature inside HAL SPI Driver
-* Activated: CRC code is present inside driver
-* Deactivated: CRC code cleaned from driver
-*/
-
-#define USE_SPI_CRC                     0U
-
-/* Includes ------------------------------------------------------------------*/
-/**
-  * @brief Include module's header file 
-  */
-
-#ifdef HAL_RCC_MODULE_ENABLED
-  #include "stm32f4xx_hal_rcc.h"
-#endif /* HAL_RCC_MODULE_ENABLED */
-
-#ifdef HAL_EXTI_MODULE_ENABLED
-  #include "stm32f4xx_hal_exti.h"
-#endif /* HAL_EXTI_MODULE_ENABLED */
-
-#ifdef HAL_GPIO_MODULE_ENABLED
-  #include "stm32f4xx_hal_gpio.h"
-#endif /* HAL_GPIO_MODULE_ENABLED */
-
-#ifdef HAL_DMA_MODULE_ENABLED
-  #include "stm32f4xx_hal_dma.h"
-#endif /* HAL_DMA_MODULE_ENABLED */
-   
-#ifdef HAL_CORTEX_MODULE_ENABLED
-  #include "stm32f4xx_hal_cortex.h"
-#endif /* HAL_CORTEX_MODULE_ENABLED */
-
-#ifdef HAL_ADC_MODULE_ENABLED
-  #include "stm32f4xx_hal_adc.h"
-#endif /* HAL_ADC_MODULE_ENABLED */
-
-#ifdef HAL_CAN_MODULE_ENABLED
-  #include "stm32f4xx_hal_can.h"
-#endif /* HAL_CAN_MODULE_ENABLED */
-
-#ifdef HAL_CRC_MODULE_ENABLED
-  #include "stm32f4xx_hal_crc.h"
-#endif /* HAL_CRC_MODULE_ENABLED */
-
-#ifdef HAL_CRYP_MODULE_ENABLED
-  #include "stm32f4xx_hal_cryp.h" 
-#endif /* HAL_CRYP_MODULE_ENABLED */
-
-#ifdef HAL_DMA2D_MODULE_ENABLED
-  #include "stm32f4xx_hal_dma2d.h"
-#endif /* HAL_DMA2D_MODULE_ENABLED */
-
-#ifdef HAL_DAC_MODULE_ENABLED
-  #include "stm32f4xx_hal_dac.h"
-#endif /* HAL_DAC_MODULE_ENABLED */
-
-#ifdef HAL_DCMI_MODULE_ENABLED
-  #include "stm32f4xx_hal_dcmi.h"
-#endif /* HAL_DCMI_MODULE_ENABLED */
-
-#ifdef HAL_ETH_MODULE_ENABLED
-  #include "stm32f4xx_hal_eth.h"
-#endif /* HAL_ETH_MODULE_ENABLED */
-
-#ifdef HAL_FLASH_MODULE_ENABLED
-  #include "stm32f4xx_hal_flash.h"
-#endif /* HAL_FLASH_MODULE_ENABLED */
- 
-#ifdef HAL_SRAM_MODULE_ENABLED
-  #include "stm32f4xx_hal_sram.h"
-#endif /* HAL_SRAM_MODULE_ENABLED */
-
-#ifdef HAL_NOR_MODULE_ENABLED
-  #include "stm32f4xx_hal_nor.h"
-#endif /* HAL_NOR_MODULE_ENABLED */
-
-#ifdef HAL_NAND_MODULE_ENABLED
-  #include "stm32f4xx_hal_nand.h"
-#endif /* HAL_NAND_MODULE_ENABLED */
-
-#ifdef HAL_PCCARD_MODULE_ENABLED
-  #include "stm32f4xx_hal_pccard.h"
-#endif /* HAL_PCCARD_MODULE_ENABLED */ 
-  
-#ifdef HAL_SDRAM_MODULE_ENABLED
-  #include "stm32f4xx_hal_sdram.h"
-#endif /* HAL_SDRAM_MODULE_ENABLED */      
-
-#ifdef HAL_HASH_MODULE_ENABLED
- #include "stm32f4xx_hal_hash.h"
-#endif /* HAL_HASH_MODULE_ENABLED */
-
-#ifdef HAL_I2C_MODULE_ENABLED
- #include "stm32f4xx_hal_i2c.h"
-#endif /* HAL_I2C_MODULE_ENABLED */
-
-#ifdef HAL_I2S_MODULE_ENABLED
- #include "stm32f4xx_hal_i2s.h"
-#endif /* HAL_I2S_MODULE_ENABLED */
-
-#ifdef HAL_IWDG_MODULE_ENABLED
- #include "stm32f4xx_hal_iwdg.h"
-#endif /* HAL_IWDG_MODULE_ENABLED */
-
-#ifdef HAL_LTDC_MODULE_ENABLED
- #include "stm32f4xx_hal_ltdc.h"
-#endif /* HAL_LTDC_MODULE_ENABLED */
-
-#ifdef HAL_PWR_MODULE_ENABLED
- #include "stm32f4xx_hal_pwr.h"
-#endif /* HAL_PWR_MODULE_ENABLED */
-
-#ifdef HAL_RNG_MODULE_ENABLED
- #include "stm32f4xx_hal_rng.h"
-#endif /* HAL_RNG_MODULE_ENABLED */
-
-#ifdef HAL_RTC_MODULE_ENABLED
- #include "stm32f4xx_hal_rtc.h"
-#endif /* HAL_RTC_MODULE_ENABLED */
-
-#ifdef HAL_SAI_MODULE_ENABLED
- #include "stm32f4xx_hal_sai.h"
-#endif /* HAL_SAI_MODULE_ENABLED */
-
-#ifdef HAL_SD_MODULE_ENABLED
- #include "stm32f4xx_hal_sd.h"
-#endif /* HAL_SD_MODULE_ENABLED */
-
-#ifdef HAL_MMC_MODULE_ENABLED
- #include "stm32f4xx_hal_mmc.h"
-#endif /* HAL_MMC_MODULE_ENABLED */
-
-#ifdef HAL_SPI_MODULE_ENABLED
- #include "stm32f4xx_hal_spi.h"
-#endif /* HAL_SPI_MODULE_ENABLED */
-
-#ifdef HAL_TIM_MODULE_ENABLED
- #include "stm32f4xx_hal_tim.h"
-#endif /* HAL_TIM_MODULE_ENABLED */
-
-#ifdef HAL_UART_MODULE_ENABLED
- #include "stm32f4xx_hal_uart.h"
-#endif /* HAL_UART_MODULE_ENABLED */
-
-#ifdef HAL_USART_MODULE_ENABLED
- #include "stm32f4xx_hal_usart.h"
-#endif /* HAL_USART_MODULE_ENABLED */
-
-#ifdef HAL_IRDA_MODULE_ENABLED
- #include "stm32f4xx_hal_irda.h"
-#endif /* HAL_IRDA_MODULE_ENABLED */
-
-#ifdef HAL_SMARTCARD_MODULE_ENABLED
- #include "stm32f4xx_hal_smartcard.h"
-#endif /* HAL_SMARTCARD_MODULE_ENABLED */
-
-#ifdef HAL_WWDG_MODULE_ENABLED
- #include "stm32f4xx_hal_wwdg.h"
-#endif /* HAL_WWDG_MODULE_ENABLED */
-
-#ifdef HAL_PCD_MODULE_ENABLED
- #include "stm32f4xx_hal_pcd.h"
-#endif /* HAL_PCD_MODULE_ENABLED */
-
-#ifdef HAL_HCD_MODULE_ENABLED
- #include "stm32f4xx_hal_hcd.h"
-#endif /* HAL_HCD_MODULE_ENABLED */
-   
-#ifdef HAL_DSI_MODULE_ENABLED
- #include "stm32f4xx_hal_dsi.h"
-#endif /* HAL_DSI_MODULE_ENABLED */
-
-#ifdef HAL_QSPI_MODULE_ENABLED
- #include "stm32f4xx_hal_qspi.h"
-#endif /* HAL_QSPI_MODULE_ENABLED */
-
-#ifdef HAL_CEC_MODULE_ENABLED
- #include "stm32f4xx_hal_cec.h"
-#endif /* HAL_CEC_MODULE_ENABLED */
-
-#ifdef HAL_FMPI2C_MODULE_ENABLED
- #include "stm32f4xx_hal_fmpi2c.h"
-#endif /* HAL_FMPI2C_MODULE_ENABLED */
-
-#ifdef HAL_SPDIFRX_MODULE_ENABLED
- #include "stm32f4xx_hal_spdifrx.h"
-#endif /* HAL_SPDIFRX_MODULE_ENABLED */
-
-#ifdef HAL_DFSDM_MODULE_ENABLED
- #include "stm32f4xx_hal_dfsdm.h"
-#endif /* HAL_DFSDM_MODULE_ENABLED */
-
-#ifdef HAL_LPTIM_MODULE_ENABLED
- #include "stm32f4xx_hal_lptim.h"
-#endif /* HAL_LPTIM_MODULE_ENABLED */
-   
-/* Exported macro ------------------------------------------------------------*/
-#ifdef  USE_FULL_ASSERT
-/**
-  * @brief  The assert_param macro is used for function's parameters check.
-  * @param  expr: If expr is false, it calls assert_failed function
-  *         which reports the name of the source file and the source
-  *         line number of the call that failed. 
-  *         If expr is true, it returns no value.
-  * @retval None
-  */
-  #define assert_param(expr) ((expr) ? (void)0U : assert_failed((uint8_t *)__FILE__, __LINE__))
-/* Exported functions ------------------------------------------------------- */
-  void assert_failed(uint8_t* file, uint32_t line);
-#else
-  #define assert_param(expr) ((void)0U)
-#endif /* USE_FULL_ASSERT */    
-
-#ifdef __cplusplus
-}
-#endif
-
-#endif /* __STM32F4xx_HAL_CONF_H */
- 
-
-/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
diff --git a/ports/stm32f4/boards/nucleo_f412zg/board.c b/ports/stm32f4/boards/nucleo_f412zg/board.c
deleted file mode 100644
index 4421970eef..0000000000
--- a/ports/stm32f4/boards/nucleo_f412zg/board.c
+++ /dev/null
@@ -1,38 +0,0 @@
-/*
- * 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 "boards/board.h"
-
-void board_init(void) {
-}
-
-bool board_requests_safe_mode(void) {
-  return false;
-}
-
-void reset_board(void) {
-
-}
diff --git a/ports/stm32f4/boards/nucleo_f412zg/mpconfigboard.h b/ports/stm32f4/boards/nucleo_f412zg/mpconfigboard.h
deleted file mode 100644
index c029f8f754..0000000000
--- a/ports/stm32f4/boards/nucleo_f412zg/mpconfigboard.h
+++ /dev/null
@@ -1,38 +0,0 @@
-/*
- * This file is part of the MicroPython project, http://micropython.org/
- *
- * The MIT License (MIT)
- *
- * Copyright (c) 2016 Glenn Ruben Bakke
- * Copyright (c) 2018 Dan Halbert 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.
- */
-
-//Micropython setup
-
-#define MICROPY_HW_BOARD_NAME       "NUCLEO-F412ZG"
-#define MICROPY_HW_MCU_NAME         "STM32F412xGS"
-
-#define FLASH_SIZE                  (0x100000)
-#define FLASH_PAGE_SIZE             (0x4000)
-
-#define CIRCUITPY_INTERNAL_NVM_SIZE (4096)
-#define AUTORESET_DELAY_MS 500
-#define BOARD_FLASH_SIZE (FLASH_SIZE - 0x4000 - CIRCUITPY_INTERNAL_NVM_SIZE)
\ No newline at end of file
diff --git a/ports/stm32f4/boards/nucleo_f412zg/mpconfigboard.mk b/ports/stm32f4/boards/nucleo_f412zg/mpconfigboard.mk
deleted file mode 100644
index 791c5c5511..0000000000
--- a/ports/stm32f4/boards/nucleo_f412zg/mpconfigboard.mk
+++ /dev/null
@@ -1,11 +0,0 @@
-USB_VID = 0x239A
-USB_PID = 0x802A
-USB_PRODUCT = "A glorious potato"
-USB_MANUFACTURER = "Adafruit Industries LLC"
-
-MCU_SERIES = f4
-CMSIS_MCU = STM32F412xG
-LD_FILE = boards/STM32F412ZGTx_FLASH.ld
-TEXT0_ADDR = 0x08000000
-TEXT1_ADDR = 0x08020000
-
diff --git a/ports/stm32f4/boards/nucleo_f411re/board.c b/ports/stm32f4/boards/stm32f411_disco/board.c
similarity index 100%
rename from ports/stm32f4/boards/nucleo_f411re/board.c
rename to ports/stm32f4/boards/stm32f411_disco/board.c
diff --git a/ports/stm32f4/boards/nucleo_f411re/mpconfigboard.h b/ports/stm32f4/boards/stm32f411_disco/mpconfigboard.h
similarity index 95%
rename from ports/stm32f4/boards/nucleo_f411re/mpconfigboard.h
rename to ports/stm32f4/boards/stm32f411_disco/mpconfigboard.h
index 90efaad19b..6754432823 100644
--- a/ports/stm32f4/boards/nucleo_f411re/mpconfigboard.h
+++ b/ports/stm32f4/boards/stm32f411_disco/mpconfigboard.h
@@ -27,7 +27,7 @@
 
 //Micropython setup
 
-#define MICROPY_HW_BOARD_NAME       "NUCLEO-F411RE"
+#define MICROPY_HW_BOARD_NAME       "STM32F411E_DISCO"
 #define MICROPY_HW_MCU_NAME         "STM32F411xE"
 
 #define FLASH_SIZE                  (0x7D000)
diff --git a/ports/stm32f4/boards/nucleo_f411re/mpconfigboard.mk b/ports/stm32f4/boards/stm32f411_disco/mpconfigboard.mk
similarity index 83%
rename from ports/stm32f4/boards/nucleo_f411re/mpconfigboard.mk
rename to ports/stm32f4/boards/stm32f411_disco/mpconfigboard.mk
index 56f436117f..0c24fe292a 100644
--- a/ports/stm32f4/boards/nucleo_f411re/mpconfigboard.mk
+++ b/ports/stm32f4/boards/stm32f411_disco/mpconfigboard.mk
@@ -5,7 +5,7 @@ USB_MANUFACTURER = "Adafruit Industries LLC"
 
 MCU_SERIES = f4
 CMSIS_MCU = STM32F411xE
-LD_FILE = boards/stm32f411.ld
+LD_FILE = boards/STM32F411VETx_FLASH.ld
 TEXT0_ADDR = 0x08000000
 TEXT1_ADDR = 0x08020000
 
diff --git a/ports/stm32f4/boards/stm32f411_disco/pins.c b/ports/stm32f4/boards/stm32f411_disco/pins.c
new file mode 100644
index 0000000000..e3a4b5ed60
--- /dev/null
+++ b/ports/stm32f4/boards/stm32f411_disco/pins.c
@@ -0,0 +1,90 @@
+#include "shared-bindings/board/__init__.h"
+
+STATIC const mp_rom_map_elem_t board_module_globals_table[] = {
+  { MP_ROM_QSTR(MP_QSTR_PE02), MP_ROM_PTR(&pin_PE02) },
+  { MP_ROM_QSTR(MP_QSTR_PE03), MP_ROM_PTR(&pin_PE03) },
+  { MP_ROM_QSTR(MP_QSTR_PE04), MP_ROM_PTR(&pin_PE04) },
+  { MP_ROM_QSTR(MP_QSTR_PE05), MP_ROM_PTR(&pin_PE05) },
+  { MP_ROM_QSTR(MP_QSTR_PE06), MP_ROM_PTR(&pin_PE06) },
+  { MP_ROM_QSTR(MP_QSTR_PC13), MP_ROM_PTR(&pin_PC13) },
+  { MP_ROM_QSTR(MP_QSTR_PF02), MP_ROM_PTR(&pin_PF02) },
+  { MP_ROM_QSTR(MP_QSTR_PF03), MP_ROM_PTR(&pin_PF03) },
+  { MP_ROM_QSTR(MP_QSTR_PF10), MP_ROM_PTR(&pin_PF10) },
+  { MP_ROM_QSTR(MP_QSTR_PC00), MP_ROM_PTR(&pin_PC00) },
+  { MP_ROM_QSTR(MP_QSTR_PC01), MP_ROM_PTR(&pin_PC01) },
+  { MP_ROM_QSTR(MP_QSTR_PC02), MP_ROM_PTR(&pin_PC02) },
+  { MP_ROM_QSTR(MP_QSTR_PC03), MP_ROM_PTR(&pin_PC03) },
+  { MP_ROM_QSTR(MP_QSTR_PA01), MP_ROM_PTR(&pin_PA01) },
+  { MP_ROM_QSTR(MP_QSTR_PA02), MP_ROM_PTR(&pin_PA02) },
+  { MP_ROM_QSTR(MP_QSTR_PA03), MP_ROM_PTR(&pin_PA03) },
+  { MP_ROM_QSTR(MP_QSTR_PA04), MP_ROM_PTR(&pin_PA04) },
+  { MP_ROM_QSTR(MP_QSTR_PA05), MP_ROM_PTR(&pin_PA05) },
+  { MP_ROM_QSTR(MP_QSTR_PA06), MP_ROM_PTR(&pin_PA06) },
+  { MP_ROM_QSTR(MP_QSTR_PA07), MP_ROM_PTR(&pin_PA07) },
+  { MP_ROM_QSTR(MP_QSTR_PC04), MP_ROM_PTR(&pin_PC04) },
+  { MP_ROM_QSTR(MP_QSTR_PC05), MP_ROM_PTR(&pin_PC05) },
+  { MP_ROM_QSTR(MP_QSTR_PB00), MP_ROM_PTR(&pin_PB00) },
+  { MP_ROM_QSTR(MP_QSTR_PB01), MP_ROM_PTR(&pin_PB01) },
+  { MP_ROM_QSTR(MP_QSTR_PF11), MP_ROM_PTR(&pin_PF11) },
+  { MP_ROM_QSTR(MP_QSTR_PF13), MP_ROM_PTR(&pin_PF13) },
+  { MP_ROM_QSTR(MP_QSTR_PB10), MP_ROM_PTR(&pin_PB10) },
+  { MP_ROM_QSTR(MP_QSTR_PB11), MP_ROM_PTR(&pin_PB11) },
+  { MP_ROM_QSTR(MP_QSTR_PB12), MP_ROM_PTR(&pin_PB12) },
+  { MP_ROM_QSTR(MP_QSTR_PB13), MP_ROM_PTR(&pin_PB13) },
+  { MP_ROM_QSTR(MP_QSTR_PB14), MP_ROM_PTR(&pin_PB14) },
+  { MP_ROM_QSTR(MP_QSTR_PB15), MP_ROM_PTR(&pin_PB15) },
+  { MP_ROM_QSTR(MP_QSTR_PD12), MP_ROM_PTR(&pin_PD12) },
+  { MP_ROM_QSTR(MP_QSTR_PD13), MP_ROM_PTR(&pin_PD13) },
+  { MP_ROM_QSTR(MP_QSTR_PG02), MP_ROM_PTR(&pin_PG02) },
+  { MP_ROM_QSTR(MP_QSTR_PC06), MP_ROM_PTR(&pin_PC06) },
+  { MP_ROM_QSTR(MP_QSTR_PC07), MP_ROM_PTR(&pin_PC07) },
+  { MP_ROM_QSTR(MP_QSTR_PC09), MP_ROM_PTR(&pin_PC09) },
+  { MP_ROM_QSTR(MP_QSTR_PA08), MP_ROM_PTR(&pin_PA08) },
+  { MP_ROM_QSTR(MP_QSTR_PA10), MP_ROM_PTR(&pin_PA10) },
+  { MP_ROM_QSTR(MP_QSTR_PA13), MP_ROM_PTR(&pin_PA13) },
+  { MP_ROM_QSTR(MP_QSTR_PA14), MP_ROM_PTR(&pin_PA14) },
+  { MP_ROM_QSTR(MP_QSTR_PA15), MP_ROM_PTR(&pin_PA15) },
+  { MP_ROM_QSTR(MP_QSTR_PD06), MP_ROM_PTR(&pin_PD06) },
+  { MP_ROM_QSTR(MP_QSTR_PG09), MP_ROM_PTR(&pin_PG09) },
+  { MP_ROM_QSTR(MP_QSTR_PG10), MP_ROM_PTR(&pin_PG10) },
+  { MP_ROM_QSTR(MP_QSTR_PG11), MP_ROM_PTR(&pin_PG11) },
+  { MP_ROM_QSTR(MP_QSTR_PG12), MP_ROM_PTR(&pin_PG12) },
+  { MP_ROM_QSTR(MP_QSTR_PG13), MP_ROM_PTR(&pin_PG13) },
+  { MP_ROM_QSTR(MP_QSTR_PG14), MP_ROM_PTR(&pin_PG14) },
+  { MP_ROM_QSTR(MP_QSTR_PB03), MP_ROM_PTR(&pin_PB03) },
+  { MP_ROM_QSTR(MP_QSTR_PB04), MP_ROM_PTR(&pin_PB04) },
+  { MP_ROM_QSTR(MP_QSTR_PB05), MP_ROM_PTR(&pin_PB05) },
+  { MP_ROM_QSTR(MP_QSTR_PB06), MP_ROM_PTR(&pin_PB06) },
+  { MP_ROM_QSTR(MP_QSTR_PB07), MP_ROM_PTR(&pin_PB07) },
+  { MP_ROM_QSTR(MP_QSTR_PB08), MP_ROM_PTR(&pin_PB08) },
+  { MP_ROM_QSTR(MP_QSTR_PB09), MP_ROM_PTR(&pin_PB09) },
+  { MP_ROM_QSTR(MP_QSTR_PE00), MP_ROM_PTR(&pin_PE00) },
+  { MP_ROM_QSTR(MP_QSTR_PE01), MP_ROM_PTR(&pin_PE01) },
+  { MP_ROM_QSTR(MP_QSTR_D15), MP_ROM_PTR(&pin_PB10) },
+  { MP_ROM_QSTR(MP_QSTR_D14), MP_ROM_PTR(&pin_PB09) },
+  { MP_ROM_QSTR(MP_QSTR_D13), MP_ROM_PTR(&pin_PA05) },
+  { MP_ROM_QSTR(MP_QSTR_D12), MP_ROM_PTR(&pin_PA06) },
+  { MP_ROM_QSTR(MP_QSTR_D11), MP_ROM_PTR(&pin_PA07) },
+  { MP_ROM_QSTR(MP_QSTR_D10), MP_ROM_PTR(&pin_PA15) },
+  { MP_ROM_QSTR(MP_QSTR_D9), MP_ROM_PTR(&pin_PB08) },
+  { MP_ROM_QSTR(MP_QSTR_D8), MP_ROM_PTR(&pin_PG10) },
+  { MP_ROM_QSTR(MP_QSTR_D7), MP_ROM_PTR(&pin_PG11) },
+  { MP_ROM_QSTR(MP_QSTR_D6), MP_ROM_PTR(&pin_PF03) },
+  { MP_ROM_QSTR(MP_QSTR_D5), MP_ROM_PTR(&pin_PF10) },
+  { MP_ROM_QSTR(MP_QSTR_D4), MP_ROM_PTR(&pin_PG12) },
+  { MP_ROM_QSTR(MP_QSTR_D3), MP_ROM_PTR(&pin_PF04) },
+  { MP_ROM_QSTR(MP_QSTR_D2), MP_ROM_PTR(&pin_PG13) },
+  { MP_ROM_QSTR(MP_QSTR_D1), MP_ROM_PTR(&pin_PG14) },
+  { MP_ROM_QSTR(MP_QSTR_D0), MP_ROM_PTR(&pin_PG09) },
+  { MP_ROM_QSTR(MP_QSTR_A0), MP_ROM_PTR(&pin_PA01) },
+  { MP_ROM_QSTR(MP_QSTR_A1), MP_ROM_PTR(&pin_PC01) },
+  { MP_ROM_QSTR(MP_QSTR_A2), MP_ROM_PTR(&pin_PC03) },
+  { MP_ROM_QSTR(MP_QSTR_A3), MP_ROM_PTR(&pin_PC04) },
+  { MP_ROM_QSTR(MP_QSTR_A4), MP_ROM_PTR(&pin_PC05) }, //alt PB09, see F401ZG-DISCO manual
+  { MP_ROM_QSTR(MP_QSTR_A5), MP_ROM_PTR(&pin_PB00) }, //alt PB10, see F401ZG-DISCO manual
+  { MP_ROM_QSTR(MP_QSTR_LED1), MP_ROM_PTR(&pin_PE00) },
+  { MP_ROM_QSTR(MP_QSTR_LED2), MP_ROM_PTR(&pin_PE01) },
+  { MP_ROM_QSTR(MP_QSTR_LED3), MP_ROM_PTR(&pin_PE02) },
+  { MP_ROM_QSTR(MP_QSTR_LED4), MP_ROM_PTR(&pin_PE03) },
+};
+MP_DEFINE_CONST_DICT(board_module_globals, board_module_globals_table);
diff --git a/ports/stm32f4/boards/nucleo_f412zg/stm32f4xx_hal_conf.h b/ports/stm32f4/boards/stm32f411_disco/stm32f4xx_hal_conf.h
similarity index 98%
rename from ports/stm32f4/boards/nucleo_f412zg/stm32f4xx_hal_conf.h
rename to ports/stm32f4/boards/stm32f411_disco/stm32f4xx_hal_conf.h
index 67343d525a..4b6ba3d036 100644
--- a/ports/stm32f4/boards/nucleo_f412zg/stm32f4xx_hal_conf.h
+++ b/ports/stm32f4/boards/stm32f411_disco/stm32f4xx_hal_conf.h
@@ -51,8 +51,8 @@
 /* #define HAL_SRAM_MODULE_ENABLED   */
 /* #define HAL_SDRAM_MODULE_ENABLED   */
 /* #define HAL_HASH_MODULE_ENABLED   */
-/* #define HAL_I2C_MODULE_ENABLED   */
-/* #define HAL_I2S_MODULE_ENABLED   */
+#define HAL_I2C_MODULE_ENABLED
+#define HAL_I2S_MODULE_ENABLED
 /* #define HAL_IWDG_MODULE_ENABLED   */
 /* #define HAL_LTDC_MODULE_ENABLED   */
 /* #define HAL_RNG_MODULE_ENABLED   */
@@ -60,14 +60,14 @@
 /* #define HAL_SAI_MODULE_ENABLED   */
 /* #define HAL_SD_MODULE_ENABLED   */
 /* #define HAL_MMC_MODULE_ENABLED   */
-/* #define HAL_SPI_MODULE_ENABLED   */
+#define HAL_SPI_MODULE_ENABLED
 /* #define HAL_TIM_MODULE_ENABLED   */
-#define HAL_UART_MODULE_ENABLED
+/* #define HAL_UART_MODULE_ENABLED   */
 /* #define HAL_USART_MODULE_ENABLED   */
 /* #define HAL_IRDA_MODULE_ENABLED   */
 /* #define HAL_SMARTCARD_MODULE_ENABLED   */
 /* #define HAL_WWDG_MODULE_ENABLED   */
-//#define HAL_PCD_MODULE_ENABLED
+#define HAL_PCD_MODULE_ENABLED
 /* #define HAL_HCD_MODULE_ENABLED   */
 /* #define HAL_DSI_MODULE_ENABLED   */
 /* #define HAL_QSPI_MODULE_ENABLED   */
diff --git a/ports/stm32f4/boards/stm32f411_disco/stm32f4xx_hal_msp.c b/ports/stm32f4/boards/stm32f411_disco/stm32f4xx_hal_msp.c
new file mode 100644
index 0000000000..4989f9889b
--- /dev/null
+++ b/ports/stm32f4/boards/stm32f411_disco/stm32f4xx_hal_msp.c
@@ -0,0 +1,427 @@
+/* USER CODE BEGIN Header */
+/**
+  ******************************************************************************
+  * File Name          : stm32f4xx_hal_msp.c
+  * Description        : This file provides code for the MSP Initialization 
+  *                      and de-Initialization codes.
+  ******************************************************************************
+  * @attention
+  *
+  * <h2><center>&copy; Copyright (c) 2019 STMicroelectronics.
+  * All rights reserved.</center></h2>
+  *
+  * This software component is licensed by ST under Ultimate Liberty license
+  * SLA0044, the "License"; You may not use this file except in compliance with
+  * the License. You may obtain a copy of the License at:
+  *                             www.st.com/SLA0044
+  *
+  ******************************************************************************
+  */
+/* USER CODE END Header */
+
+/* Includes ------------------------------------------------------------------*/
+/* USER CODE BEGIN Includes */
+#include "stm32f4xx_hal.h"
+/* USER CODE END Includes */
+
+/* Private typedef -----------------------------------------------------------*/
+/* USER CODE BEGIN TD */
+
+/* USER CODE END TD */
+
+/* Private define ------------------------------------------------------------*/
+/* USER CODE BEGIN Define */
+#define DATA_Ready_Pin GPIO_PIN_2
+#define DATA_Ready_GPIO_Port GPIOE
+#define CS_I2C_SPI_Pin GPIO_PIN_3
+#define CS_I2C_SPI_GPIO_Port GPIOE
+#define INT1_Pin GPIO_PIN_4
+#define INT1_GPIO_Port GPIOE
+#define INT2_Pin GPIO_PIN_5
+#define INT2_GPIO_Port GPIOE
+#define PC14_OSC32_IN_Pin GPIO_PIN_14
+#define PC14_OSC32_IN_GPIO_Port GPIOC
+#define PC15_OSC32_OUT_Pin GPIO_PIN_15
+#define PC15_OSC32_OUT_GPIO_Port GPIOC
+#define PH0_OSC_IN_Pin GPIO_PIN_0
+#define PH0_OSC_IN_GPIO_Port GPIOH
+#define PH1_OSC_OUT_Pin GPIO_PIN_1
+#define PH1_OSC_OUT_GPIO_Port GPIOH
+#define OTG_FS_PowerSwitchOn_Pin GPIO_PIN_0
+#define OTG_FS_PowerSwitchOn_GPIO_Port GPIOC
+#define PDM_OUT_Pin GPIO_PIN_3
+#define PDM_OUT_GPIO_Port GPIOC
+#define I2S3_WS_Pin GPIO_PIN_4
+#define I2S3_WS_GPIO_Port GPIOA
+#define SPI1_SCK_Pin GPIO_PIN_5
+#define SPI1_SCK_GPIO_Port GPIOA
+#define SPI1_MISO_Pin GPIO_PIN_6
+#define SPI1_MISO_GPIO_Port GPIOA
+#define SPI1_MOSI_Pin GPIO_PIN_7
+#define SPI1_MOSI_GPIO_Port GPIOA
+#define CLK_IN_Pin GPIO_PIN_10
+#define CLK_IN_GPIO_Port GPIOB
+#define LD4_Pin GPIO_PIN_12
+#define LD4_GPIO_Port GPIOD
+#define LD3_Pin GPIO_PIN_13
+#define LD3_GPIO_Port GPIOD
+#define LD5_Pin GPIO_PIN_14
+#define LD5_GPIO_Port GPIOD
+#define LD6_Pin GPIO_PIN_15
+#define LD6_GPIO_Port GPIOD
+#define I2S3_MCK_Pin GPIO_PIN_7
+#define I2S3_MCK_GPIO_Port GPIOC
+#define VBUS_FS_Pin GPIO_PIN_9
+#define VBUS_FS_GPIO_Port GPIOA
+#define OTG_FS_ID_Pin GPIO_PIN_10
+#define OTG_FS_ID_GPIO_Port GPIOA
+#define OTG_FS_DM_Pin GPIO_PIN_11
+#define OTG_FS_DM_GPIO_Port GPIOA
+#define OTG_FS_DP_Pin GPIO_PIN_12
+#define OTG_FS_DP_GPIO_Port GPIOA
+#define SWDIO_Pin GPIO_PIN_13
+#define SWDIO_GPIO_Port GPIOA
+#define SWCLK_Pin GPIO_PIN_14
+#define SWCLK_GPIO_Port GPIOA
+#define I2S3_SCK_Pin GPIO_PIN_10
+#define I2S3_SCK_GPIO_Port GPIOC
+#define I2S3_SD_Pin GPIO_PIN_12
+#define I2S3_SD_GPIO_Port GPIOC
+#define Audio_RST_Pin GPIO_PIN_4
+#define Audio_RST_GPIO_Port GPIOD
+#define OTG_FS_OverCurrent_Pin GPIO_PIN_5
+#define OTG_FS_OverCurrent_GPIO_Port GPIOD
+#define SWO_Pin GPIO_PIN_3
+#define SWO_GPIO_Port GPIOB
+#define Audio_SCL_Pin GPIO_PIN_6
+#define Audio_SCL_GPIO_Port GPIOB
+#define Audio_SDA_Pin GPIO_PIN_9
+#define Audio_SDA_GPIO_Port GPIOB
+#define MEMS_INT2_Pin GPIO_PIN_1
+#define MEMS_INT2_GPIO_Port GPIOE
+ 
+/* USER CODE END Define */
+
+/* Private macro -------------------------------------------------------------*/
+/* USER CODE BEGIN Macro */
+
+/* USER CODE END Macro */
+
+/* Private variables ---------------------------------------------------------*/
+/* USER CODE BEGIN PV */
+
+/* USER CODE END PV */
+
+/* Private function prototypes -----------------------------------------------*/
+/* USER CODE BEGIN PFP */
+
+/* USER CODE END PFP */
+
+/* External functions --------------------------------------------------------*/
+/* USER CODE BEGIN ExternalFunctions */
+
+/* USER CODE END ExternalFunctions */
+
+/* USER CODE BEGIN 0 */
+
+/* USER CODE END 0 */
+/**
+  * Initializes the Global MSP.
+  */
+void HAL_MspInit(void)
+{
+  /* USER CODE BEGIN MspInit 0 */
+
+  /* USER CODE END MspInit 0 */
+
+  __HAL_RCC_SYSCFG_CLK_ENABLE();
+  __HAL_RCC_PWR_CLK_ENABLE();
+
+  HAL_NVIC_SetPriorityGrouping(NVIC_PRIORITYGROUP_0);
+
+  /* System interrupt init*/
+
+  /* USER CODE BEGIN MspInit 1 */
+
+  /* USER CODE END MspInit 1 */
+}
+
+/**
+* @brief I2C MSP Initialization
+* This function configures the hardware resources used in this example
+* @param hi2c: I2C handle pointer
+* @retval None
+*/
+void HAL_I2C_MspInit(I2C_HandleTypeDef* hi2c)
+{
+  GPIO_InitTypeDef GPIO_InitStruct = {0};
+  if(hi2c->Instance==I2C1)
+  {
+  /* USER CODE BEGIN I2C1_MspInit 0 */
+
+  /* USER CODE END I2C1_MspInit 0 */
+  
+    __HAL_RCC_GPIOB_CLK_ENABLE();
+    /**I2C1 GPIO Configuration    
+    PB6     ------> I2C1_SCL
+    PB9     ------> I2C1_SDA 
+    */
+    GPIO_InitStruct.Pin = Audio_SCL_Pin|Audio_SDA_Pin;
+    GPIO_InitStruct.Mode = GPIO_MODE_AF_OD;
+    GPIO_InitStruct.Pull = GPIO_PULLUP;
+    GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
+    GPIO_InitStruct.Alternate = GPIO_AF4_I2C1;
+    HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);
+
+    /* Peripheral clock enable */
+    __HAL_RCC_I2C1_CLK_ENABLE();
+  /* USER CODE BEGIN I2C1_MspInit 1 */
+
+  /* USER CODE END I2C1_MspInit 1 */
+  }
+
+}
+
+/**
+* @brief I2C MSP De-Initialization
+* This function freeze the hardware resources used in this example
+* @param hi2c: I2C handle pointer
+* @retval None
+*/
+void HAL_I2C_MspDeInit(I2C_HandleTypeDef* hi2c)
+{
+  if(hi2c->Instance==I2C1)
+  {
+  /* USER CODE BEGIN I2C1_MspDeInit 0 */
+
+  /* USER CODE END I2C1_MspDeInit 0 */
+    /* Peripheral clock disable */
+    __HAL_RCC_I2C1_CLK_DISABLE();
+  
+    /**I2C1 GPIO Configuration    
+    PB6     ------> I2C1_SCL
+    PB9     ------> I2C1_SDA 
+    */
+    HAL_GPIO_DeInit(GPIOB, Audio_SCL_Pin|Audio_SDA_Pin);
+
+  /* USER CODE BEGIN I2C1_MspDeInit 1 */
+
+  /* USER CODE END I2C1_MspDeInit 1 */
+  }
+
+}
+
+/**
+* @brief I2S MSP Initialization
+* This function configures the hardware resources used in this example
+* @param hi2s: I2S handle pointer
+* @retval None
+*/
+void HAL_I2S_MspInit(I2S_HandleTypeDef* hi2s)
+{
+  GPIO_InitTypeDef GPIO_InitStruct = {0};
+  if(hi2s->Instance==SPI2)
+  {
+  /* USER CODE BEGIN SPI2_MspInit 0 */
+
+  /* USER CODE END SPI2_MspInit 0 */
+    /* Peripheral clock enable */
+    __HAL_RCC_SPI2_CLK_ENABLE();
+  
+    __HAL_RCC_GPIOC_CLK_ENABLE();
+    __HAL_RCC_GPIOB_CLK_ENABLE();
+    /**I2S2 GPIO Configuration    
+    PC2     ------> I2S2_ext_SD
+    PC3     ------> I2S2_SD
+    PB10     ------> I2S2_CK
+    PB12     ------> I2S2_WS 
+    */
+    GPIO_InitStruct.Pin = GPIO_PIN_2;
+    GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
+    GPIO_InitStruct.Pull = GPIO_NOPULL;
+    GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
+    GPIO_InitStruct.Alternate = GPIO_AF6_I2S2ext;
+    HAL_GPIO_Init(GPIOC, &GPIO_InitStruct);
+
+    GPIO_InitStruct.Pin = PDM_OUT_Pin;
+    GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
+    GPIO_InitStruct.Pull = GPIO_NOPULL;
+    GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
+    GPIO_InitStruct.Alternate = GPIO_AF5_SPI2;
+    HAL_GPIO_Init(PDM_OUT_GPIO_Port, &GPIO_InitStruct);
+
+    GPIO_InitStruct.Pin = CLK_IN_Pin|GPIO_PIN_12;
+    GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
+    GPIO_InitStruct.Pull = GPIO_NOPULL;
+    GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
+    GPIO_InitStruct.Alternate = GPIO_AF5_SPI2;
+    HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);
+
+  /* USER CODE BEGIN SPI2_MspInit 1 */
+
+  /* USER CODE END SPI2_MspInit 1 */
+  }
+  else if(hi2s->Instance==SPI3)
+  {
+  /* USER CODE BEGIN SPI3_MspInit 0 */
+
+  /* USER CODE END SPI3_MspInit 0 */
+    /* Peripheral clock enable */
+    __HAL_RCC_SPI3_CLK_ENABLE();
+  
+    __HAL_RCC_GPIOA_CLK_ENABLE();
+    __HAL_RCC_GPIOC_CLK_ENABLE();
+    /**I2S3 GPIO Configuration    
+    PA4     ------> I2S3_WS
+    PC7     ------> I2S3_MCK
+    PC10     ------> I2S3_CK
+    PC12     ------> I2S3_SD 
+    */
+    GPIO_InitStruct.Pin = I2S3_WS_Pin;
+    GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
+    GPIO_InitStruct.Pull = GPIO_NOPULL;
+    GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
+    GPIO_InitStruct.Alternate = GPIO_AF6_SPI3;
+    HAL_GPIO_Init(I2S3_WS_GPIO_Port, &GPIO_InitStruct);
+
+    GPIO_InitStruct.Pin = I2S3_MCK_Pin|I2S3_SCK_Pin|I2S3_SD_Pin;
+    GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
+    GPIO_InitStruct.Pull = GPIO_NOPULL;
+    GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
+    GPIO_InitStruct.Alternate = GPIO_AF6_SPI3;
+    HAL_GPIO_Init(GPIOC, &GPIO_InitStruct);
+
+  /* USER CODE BEGIN SPI3_MspInit 1 */
+
+  /* USER CODE END SPI3_MspInit 1 */
+  }
+
+}
+
+/**
+* @brief I2S MSP De-Initialization
+* This function freeze the hardware resources used in this example
+* @param hi2s: I2S handle pointer
+* @retval None
+*/
+void HAL_I2S_MspDeInit(I2S_HandleTypeDef* hi2s)
+{
+  if(hi2s->Instance==SPI2)
+  {
+  /* USER CODE BEGIN SPI2_MspDeInit 0 */
+
+  /* USER CODE END SPI2_MspDeInit 0 */
+    /* Peripheral clock disable */
+    __HAL_RCC_SPI2_CLK_DISABLE();
+  
+    /**I2S2 GPIO Configuration    
+    PC2     ------> I2S2_ext_SD
+    PC3     ------> I2S2_SD
+    PB10     ------> I2S2_CK
+    PB12     ------> I2S2_WS 
+    */
+    HAL_GPIO_DeInit(GPIOC, GPIO_PIN_2|PDM_OUT_Pin);
+
+    HAL_GPIO_DeInit(GPIOB, CLK_IN_Pin|GPIO_PIN_12);
+
+  /* USER CODE BEGIN SPI2_MspDeInit 1 */
+
+  /* USER CODE END SPI2_MspDeInit 1 */
+  }
+  else if(hi2s->Instance==SPI3)
+  {
+  /* USER CODE BEGIN SPI3_MspDeInit 0 */
+
+  /* USER CODE END SPI3_MspDeInit 0 */
+    /* Peripheral clock disable */
+    __HAL_RCC_SPI3_CLK_DISABLE();
+  
+    /**I2S3 GPIO Configuration    
+    PA4     ------> I2S3_WS
+    PC7     ------> I2S3_MCK
+    PC10     ------> I2S3_CK
+    PC12     ------> I2S3_SD 
+    */
+    HAL_GPIO_DeInit(I2S3_WS_GPIO_Port, I2S3_WS_Pin);
+
+    HAL_GPIO_DeInit(GPIOC, I2S3_MCK_Pin|I2S3_SCK_Pin|I2S3_SD_Pin);
+
+  /* USER CODE BEGIN SPI3_MspDeInit 1 */
+
+  /* USER CODE END SPI3_MspDeInit 1 */
+  }
+
+}
+
+/**
+* @brief SPI MSP Initialization
+* This function configures the hardware resources used in this example
+* @param hspi: SPI handle pointer
+* @retval None
+*/
+void HAL_SPI_MspInit(SPI_HandleTypeDef* hspi)
+{
+  GPIO_InitTypeDef GPIO_InitStruct = {0};
+  if(hspi->Instance==SPI1)
+  {
+  /* USER CODE BEGIN SPI1_MspInit 0 */
+
+  /* USER CODE END SPI1_MspInit 0 */
+    /* Peripheral clock enable */
+    __HAL_RCC_SPI1_CLK_ENABLE();
+  
+    __HAL_RCC_GPIOA_CLK_ENABLE();
+    /**SPI1 GPIO Configuration    
+    PA5     ------> SPI1_SCK
+    PA6     ------> SPI1_MISO
+    PA7     ------> SPI1_MOSI 
+    */
+    GPIO_InitStruct.Pin = SPI1_SCK_Pin|SPI1_MISO_Pin|SPI1_MOSI_Pin;
+    GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
+    GPIO_InitStruct.Pull = GPIO_NOPULL;
+    GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_VERY_HIGH;
+    GPIO_InitStruct.Alternate = GPIO_AF5_SPI1;
+    HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
+
+  /* USER CODE BEGIN SPI1_MspInit 1 */
+
+  /* USER CODE END SPI1_MspInit 1 */
+  }
+
+}
+
+/**
+* @brief SPI MSP De-Initialization
+* This function freeze the hardware resources used in this example
+* @param hspi: SPI handle pointer
+* @retval None
+*/
+void HAL_SPI_MspDeInit(SPI_HandleTypeDef* hspi)
+{
+  if(hspi->Instance==SPI1)
+  {
+  /* USER CODE BEGIN SPI1_MspDeInit 0 */
+
+  /* USER CODE END SPI1_MspDeInit 0 */
+    /* Peripheral clock disable */
+    __HAL_RCC_SPI1_CLK_DISABLE();
+  
+    /**SPI1 GPIO Configuration    
+    PA5     ------> SPI1_SCK
+    PA6     ------> SPI1_MISO
+    PA7     ------> SPI1_MOSI 
+    */
+    HAL_GPIO_DeInit(GPIOA, SPI1_SCK_Pin|SPI1_MISO_Pin|SPI1_MOSI_Pin);
+
+  /* USER CODE BEGIN SPI1_MspDeInit 1 */
+
+  /* USER CODE END SPI1_MspDeInit 1 */
+  }
+
+}
+
+/* USER CODE BEGIN 1 */
+
+/* USER CODE END 1 */
+
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
diff --git a/ports/stm32f4/boards/stm32f411_disco/stm32f4xx_it.c b/ports/stm32f4/boards/stm32f411_disco/stm32f4xx_it.c
new file mode 100644
index 0000000000..cb86910e25
--- /dev/null
+++ b/ports/stm32f4/boards/stm32f411_disco/stm32f4xx_it.c
@@ -0,0 +1,217 @@
+/* USER CODE BEGIN Header */
+/**
+  ******************************************************************************
+  * @file    stm32f4xx_it.c
+  * @brief   Interrupt Service Routines.
+  ******************************************************************************
+  * @attention
+  *
+  * <h2><center>&copy; Copyright (c) 2019 STMicroelectronics.
+  * All rights reserved.</center></h2>
+  *
+  * This software component is licensed by ST under Ultimate Liberty license
+  * SLA0044, the "License"; You may not use this file except in compliance with
+  * the License. You may obtain a copy of the License at:
+  *                             www.st.com/SLA0044
+  *
+  ******************************************************************************
+  */
+/* USER CODE END Header */
+
+/* Includes ------------------------------------------------------------------*/
+#include "main.h"
+#include "stm32f4xx_it.h"
+/* Private includes ----------------------------------------------------------*/
+/* USER CODE BEGIN Includes */
+/* USER CODE END Includes */
+
+/* Private typedef -----------------------------------------------------------*/
+/* USER CODE BEGIN TD */
+
+/* USER CODE END TD */
+
+/* Private define ------------------------------------------------------------*/
+/* USER CODE BEGIN PD */
+ 
+/* USER CODE END PD */
+
+/* Private macro -------------------------------------------------------------*/
+/* USER CODE BEGIN PM */
+
+/* USER CODE END PM */
+
+/* Private variables ---------------------------------------------------------*/
+/* USER CODE BEGIN PV */
+
+/* USER CODE END PV */
+
+/* Private function prototypes -----------------------------------------------*/
+/* USER CODE BEGIN PFP */
+
+/* USER CODE END PFP */
+
+/* Private user code ---------------------------------------------------------*/
+/* USER CODE BEGIN 0 */
+
+/* USER CODE END 0 */
+
+/* External variables --------------------------------------------------------*/
+extern PCD_HandleTypeDef hpcd_USB_OTG_FS;
+/* USER CODE BEGIN EV */
+
+/* USER CODE END EV */
+
+/******************************************************************************/
+/*           Cortex-M4 Processor Interruption and Exception Handlers          */ 
+/******************************************************************************/
+/**
+  * @brief This function handles Non maskable interrupt.
+  */
+void NMI_Handler(void)
+{
+  /* USER CODE BEGIN NonMaskableInt_IRQn 0 */
+
+  /* USER CODE END NonMaskableInt_IRQn 0 */
+  /* USER CODE BEGIN NonMaskableInt_IRQn 1 */
+
+  /* USER CODE END NonMaskableInt_IRQn 1 */
+}
+
+/**
+  * @brief This function handles Hard fault interrupt.
+  */
+void HardFault_Handler(void)
+{
+  /* USER CODE BEGIN HardFault_IRQn 0 */
+
+  /* USER CODE END HardFault_IRQn 0 */
+  while (1)
+  {
+    /* USER CODE BEGIN W1_HardFault_IRQn 0 */
+    /* USER CODE END W1_HardFault_IRQn 0 */
+  }
+}
+
+/**
+  * @brief This function handles Memory management fault.
+  */
+void MemManage_Handler(void)
+{
+  /* USER CODE BEGIN MemoryManagement_IRQn 0 */
+
+  /* USER CODE END MemoryManagement_IRQn 0 */
+  while (1)
+  {
+    /* USER CODE BEGIN W1_MemoryManagement_IRQn 0 */
+    /* USER CODE END W1_MemoryManagement_IRQn 0 */
+  }
+}
+
+/**
+  * @brief This function handles Pre-fetch fault, memory access fault.
+  */
+void BusFault_Handler(void)
+{
+  /* USER CODE BEGIN BusFault_IRQn 0 */
+
+  /* USER CODE END BusFault_IRQn 0 */
+  while (1)
+  {
+    /* USER CODE BEGIN W1_BusFault_IRQn 0 */
+    /* USER CODE END W1_BusFault_IRQn 0 */
+  }
+}
+
+/**
+  * @brief This function handles Undefined instruction or illegal state.
+  */
+void UsageFault_Handler(void)
+{
+  /* USER CODE BEGIN UsageFault_IRQn 0 */
+
+  /* USER CODE END UsageFault_IRQn 0 */
+  while (1)
+  {
+    /* USER CODE BEGIN W1_UsageFault_IRQn 0 */
+    /* USER CODE END W1_UsageFault_IRQn 0 */
+  }
+}
+
+/**
+  * @brief This function handles System service call via SWI instruction.
+  */
+void SVC_Handler(void)
+{
+  /* USER CODE BEGIN SVCall_IRQn 0 */
+
+  /* USER CODE END SVCall_IRQn 0 */
+  /* USER CODE BEGIN SVCall_IRQn 1 */
+
+  /* USER CODE END SVCall_IRQn 1 */
+}
+
+/**
+  * @brief This function handles Debug monitor.
+  */
+void DebugMon_Handler(void)
+{
+  /* USER CODE BEGIN DebugMonitor_IRQn 0 */
+
+  /* USER CODE END DebugMonitor_IRQn 0 */
+  /* USER CODE BEGIN DebugMonitor_IRQn 1 */
+
+  /* USER CODE END DebugMonitor_IRQn 1 */
+}
+
+/**
+  * @brief This function handles Pendable request for system service.
+  */
+void PendSV_Handler(void)
+{
+  /* USER CODE BEGIN PendSV_IRQn 0 */
+
+  /* USER CODE END PendSV_IRQn 0 */
+  /* USER CODE BEGIN PendSV_IRQn 1 */
+
+  /* USER CODE END PendSV_IRQn 1 */
+}
+
+/**
+  * @brief This function handles System tick timer.
+  */
+void SysTick_Handler(void)
+{
+  /* USER CODE BEGIN SysTick_IRQn 0 */
+
+  /* USER CODE END SysTick_IRQn 0 */
+  HAL_IncTick();
+  /* USER CODE BEGIN SysTick_IRQn 1 */
+
+  /* USER CODE END SysTick_IRQn 1 */
+}
+
+/******************************************************************************/
+/* STM32F4xx Peripheral Interrupt Handlers                                    */
+/* Add here the Interrupt Handlers for the used peripherals.                  */
+/* For the available peripheral interrupt handler names,                      */
+/* please refer to the startup file (startup_stm32f4xx.s).                    */
+/******************************************************************************/
+
+/**
+  * @brief This function handles USB On The Go FS global interrupt.
+  */
+void OTG_FS_IRQHandler(void)
+{
+  /* USER CODE BEGIN OTG_FS_IRQn 0 */
+
+  /* USER CODE END OTG_FS_IRQn 0 */
+  HAL_PCD_IRQHandler(&hpcd_USB_OTG_FS);
+  /* USER CODE BEGIN OTG_FS_IRQn 1 */
+
+  /* USER CODE END OTG_FS_IRQn 1 */
+}
+
+/* USER CODE BEGIN 1 */
+
+/* USER CODE END 1 */
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
diff --git a/ports/stm32f4/boards/stm32f411_disco/stm32f4xx_it.h b/ports/stm32f4/boards/stm32f411_disco/stm32f4xx_it.h
new file mode 100644
index 0000000000..feee38a396
--- /dev/null
+++ b/ports/stm32f4/boards/stm32f411_disco/stm32f4xx_it.h
@@ -0,0 +1,70 @@
+/* USER CODE BEGIN Header */
+/**
+  ******************************************************************************
+  * @file    stm32f4xx_it.h
+  * @brief   This file contains the headers of the interrupt handlers.
+  ******************************************************************************
+  * @attention
+  *
+  * <h2><center>&copy; Copyright (c) 2019 STMicroelectronics.
+  * All rights reserved.</center></h2>
+  *
+  * This software component is licensed by ST under Ultimate Liberty license
+  * SLA0044, the "License"; You may not use this file except in compliance with
+  * the License. You may obtain a copy of the License at:
+  *                             www.st.com/SLA0044
+  *
+ ******************************************************************************
+  */
+/* USER CODE END Header */
+
+/* Define to prevent recursive inclusion -------------------------------------*/
+#ifndef __STM32F4xx_IT_H
+#define __STM32F4xx_IT_H
+
+#ifdef __cplusplus
+ extern "C" {
+#endif 
+
+/* Private includes ----------------------------------------------------------*/
+/* USER CODE BEGIN Includes */
+
+/* USER CODE END Includes */
+
+/* Exported types ------------------------------------------------------------*/
+/* USER CODE BEGIN ET */
+
+/* USER CODE END ET */
+
+/* Exported constants --------------------------------------------------------*/
+/* USER CODE BEGIN EC */
+
+/* USER CODE END EC */
+
+/* Exported macro ------------------------------------------------------------*/
+/* USER CODE BEGIN EM */
+
+/* USER CODE END EM */
+
+/* Exported functions prototypes ---------------------------------------------*/
+void NMI_Handler(void);
+void HardFault_Handler(void);
+void MemManage_Handler(void);
+void BusFault_Handler(void);
+void UsageFault_Handler(void);
+void SVC_Handler(void);
+void DebugMon_Handler(void);
+void PendSV_Handler(void);
+void SysTick_Handler(void);
+void OTG_FS_IRQHandler(void);
+/* USER CODE BEGIN EFP */
+
+/* USER CODE END EFP */
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __STM32F4xx_IT_H */
+
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
diff --git a/ports/stm32f4/mpconfigport.mk b/ports/stm32f4/mpconfigport.mk
index de8cec321e..aec0996be5 100644
--- a/ports/stm32f4/mpconfigport.mk
+++ b/ports/stm32f4/mpconfigport.mk
@@ -34,16 +34,16 @@ CIRCUITPY_AUDIOBUSIO = 0
 CIRCUITPY_AUDIOIO = 0
 CIRCUITPY_BITBANGIO = 0
 CIRCUITPY_BLEIO = 0
-CIRCUITPY_BOARD = 1
+CIRCUITPY_BOARD = 0
 CIRCUITPY_BUSIO = 0
-CIRCUITPY_DIGITALIO = 1
+CIRCUITPY_DIGITALIO = 0
 CIRCUITPY_DISPLAYIO = 0
 CIRCUITPY_FREQUENCYIO = 0
 CIRCUITPY_GAMEPAD = 0
 CIRCUITPY_GAMEPADSHIFT = 0
 CIRCUITPY_I2CSLAVE = 0
 CIRCUITPY_MATH = 0
-CIRCUITPY_MICROCONTROLLER = 1
+CIRCUITPY_MICROCONTROLLER = 0
 CIRCUITPY_NEOPIXEL_WRITE = 0
 CIRCUITPY_NETWORK = 0
 CIRCUITPY_NVM = 0
diff --git a/ports/stm32f4/supervisor/port.c b/ports/stm32f4/supervisor/port.c
index 4615aa5e2b..8a106c4776 100644
--- a/ports/stm32f4/supervisor/port.c
+++ b/ports/stm32f4/supervisor/port.c
@@ -32,175 +32,74 @@
 //#include "shared-bindings/rtc/__init__.h"
 
 #include "stm32f4xx_hal.h"
-
-#define LED3_Pin GPIO_PIN_2
-#define LED3_GPIO_Port GPIOE
-#define LED4_Pin GPIO_PIN_3
-#define LED4_GPIO_Port GPIOE
-#define DFSDM_DATIN3_Pin GPIO_PIN_4
-#define DFSDM_DATIN3_GPIO_Port GPIOE
-#define A0_Pin GPIO_PIN_0
-#define A0_GPIO_Port GPIOF
-#define LCD_BLCTRL_Pin GPIO_PIN_5
-#define LCD_BLCTRL_GPIO_Port GPIOF
-#define QSPI_BK1_IO3_Pin GPIO_PIN_6
-#define QSPI_BK1_IO3_GPIO_Port GPIOF
-#define QSPI_BK1_IO2_Pin GPIO_PIN_7
-#define QSPI_BK1_IO2_GPIO_Port GPIOF
-#define QSPI_BK1_IO0_Pin GPIO_PIN_8
-#define QSPI_BK1_IO0_GPIO_Port GPIOF
-#define QSPI_BK1_IO1_Pin GPIO_PIN_9
-#define QSPI_BK1_IO1_GPIO_Port GPIOF
-#define STLK_MCO_Pin GPIO_PIN_0
-#define STLK_MCO_GPIO_Port GPIOH
-#define DFSDM_CKOUT_Pin GPIO_PIN_2
-#define DFSDM_CKOUT_GPIO_Port GPIOC
-#define JOY_SEL_Pin GPIO_PIN_0
-#define JOY_SEL_GPIO_Port GPIOA
-#define STLINK_RX_Pin GPIO_PIN_2
-#define STLINK_RX_GPIO_Port GPIOA
-#define STLINK_TX_Pin GPIO_PIN_3
-#define STLINK_TX_GPIO_Port GPIOA
-#define CODEC_I2S3_WS_Pin GPIO_PIN_4
-#define CODEC_I2S3_WS_GPIO_Port GPIOA
-#define DFSDM_DATIN0_Pin GPIO_PIN_1
-#define DFSDM_DATIN0_GPIO_Port GPIOB
-#define QSPI_CLK_Pin GPIO_PIN_2
-#define QSPI_CLK_GPIO_Port GPIOB
-#define EXT_RESET_Pin GPIO_PIN_11
-#define EXT_RESET_GPIO_Port GPIOF
-#define CTP_RST_Pin GPIO_PIN_12
-#define CTP_RST_GPIO_Port GPIOF
-#define JOY_RIGHT_Pin GPIO_PIN_14
-#define JOY_RIGHT_GPIO_Port GPIOF
-#define JOY_LEFT_Pin GPIO_PIN_15
-#define JOY_LEFT_GPIO_Port GPIOF
-#define JOY_UP_Pin GPIO_PIN_0
-#define JOY_UP_GPIO_Port GPIOG
-#define JOY_DOWN_Pin GPIO_PIN_1
-#define JOY_DOWN_GPIO_Port GPIOG
-#define D4_Pin GPIO_PIN_7
-#define D4_GPIO_Port GPIOE
-#define D5_Pin GPIO_PIN_8
-#define D5_GPIO_Port GPIOE
-#define D6_Pin GPIO_PIN_9
-#define D6_GPIO_Port GPIOE
-#define D7_Pin GPIO_PIN_10
-#define D7_GPIO_Port GPIOE
-#define D8_Pin GPIO_PIN_11
-#define D8_GPIO_Port GPIOE
-#define D9_Pin GPIO_PIN_12
-#define D9_GPIO_Port GPIOE
-#define D10_Pin GPIO_PIN_13
-#define D10_GPIO_Port GPIOE
-#define D11_Pin GPIO_PIN_14
-#define D11_GPIO_Port GPIOE
-#define D12_Pin GPIO_PIN_15
-#define D12_GPIO_Port GPIOE
-#define I2C2_SCL_Pin GPIO_PIN_10
-#define I2C2_SCL_GPIO_Port GPIOB
-#define M2_CKIN_Pin GPIO_PIN_11
-#define M2_CKIN_GPIO_Port GPIOB
-#define CODEC_I2S3_SCK_Pin GPIO_PIN_12
-#define CODEC_I2S3_SCK_GPIO_Port GPIOB
-#define D13_Pin GPIO_PIN_8
-#define D13_GPIO_Port GPIOD
-#define D14_Pin GPIO_PIN_9
-#define D14_GPIO_Port GPIOD
-#define D15_Pin GPIO_PIN_10
-#define D15_GPIO_Port GPIOD
-#define LCD_RESET_Pin GPIO_PIN_11
-#define LCD_RESET_GPIO_Port GPIOD
-#define D0_Pin GPIO_PIN_14
-#define D0_GPIO_Port GPIOD
-#define D1_Pin GPIO_PIN_15
-#define D1_GPIO_Port GPIOD
-#define CODEC_INT_Pin GPIO_PIN_2
-#define CODEC_INT_GPIO_Port GPIOG
-#define LCD_TE_Pin GPIO_PIN_4
-#define LCD_TE_GPIO_Port GPIOG
-#define CTP_INT_Pin GPIO_PIN_5
-#define CTP_INT_GPIO_Port GPIOG
-#define QSPI_BK1_NCS_Pin GPIO_PIN_6
-#define QSPI_BK1_NCS_GPIO_Port GPIOG
-#define USB_OTGFS_OVRCR_Pin GPIO_PIN_7
-#define USB_OTGFS_OVRCR_GPIO_Port GPIOG
-#define USB_OTGFS_PPWR_EN_Pin GPIO_PIN_8
-#define USB_OTGFS_PPWR_EN_GPIO_Port GPIOG
-#define CODEC_I2S3_MCK_Pin GPIO_PIN_7
-#define CODEC_I2S3_MCK_GPIO_Port GPIOC
-#define uSD_D0_Pin GPIO_PIN_8
-#define uSD_D0_GPIO_Port GPIOC
-#define uSD_D1_Pin GPIO_PIN_9
-#define uSD_D1_GPIO_Port GPIOC
-#define M2_CKINA8_Pin GPIO_PIN_8
-#define M2_CKINA8_GPIO_Port GPIOA
-#define USB_OTGFS_VBUS_Pin GPIO_PIN_9
-#define USB_OTGFS_VBUS_GPIO_Port GPIOA
-#define USB_OTGFS_ID_Pin GPIO_PIN_10
-#define USB_OTGFS_ID_GPIO_Port GPIOA
-#define USB_OTGFS_DM_Pin GPIO_PIN_11
-#define USB_OTGFS_DM_GPIO_Port GPIOA
-#define USB_OTGFS_DP_Pin GPIO_PIN_12
-#define USB_OTGFS_DP_GPIO_Port GPIOA
+#define DATA_Ready_Pin GPIO_PIN_2
+#define DATA_Ready_GPIO_Port GPIOE
+#define CS_I2C_SPI_Pin GPIO_PIN_3
+#define CS_I2C_SPI_GPIO_Port GPIOE
+#define INT1_Pin GPIO_PIN_4
+#define INT1_GPIO_Port GPIOE
+#define INT2_Pin GPIO_PIN_5
+#define INT2_GPIO_Port GPIOE
+#define PC14_OSC32_IN_Pin GPIO_PIN_14
+#define PC14_OSC32_IN_GPIO_Port GPIOC
+#define PC15_OSC32_OUT_Pin GPIO_PIN_15
+#define PC15_OSC32_OUT_GPIO_Port GPIOC
+#define PH0_OSC_IN_Pin GPIO_PIN_0
+#define PH0_OSC_IN_GPIO_Port GPIOH
+#define PH1_OSC_OUT_Pin GPIO_PIN_1
+#define PH1_OSC_OUT_GPIO_Port GPIOH
+#define OTG_FS_PowerSwitchOn_Pin GPIO_PIN_0
+#define OTG_FS_PowerSwitchOn_GPIO_Port GPIOC
+#define PDM_OUT_Pin GPIO_PIN_3
+#define PDM_OUT_GPIO_Port GPIOC
+#define I2S3_WS_Pin GPIO_PIN_4
+#define I2S3_WS_GPIO_Port GPIOA
+#define SPI1_SCK_Pin GPIO_PIN_5
+#define SPI1_SCK_GPIO_Port GPIOA
+#define SPI1_MISO_Pin GPIO_PIN_6
+#define SPI1_MISO_GPIO_Port GPIOA
+#define SPI1_MOSI_Pin GPIO_PIN_7
+#define SPI1_MOSI_GPIO_Port GPIOA
+#define CLK_IN_Pin GPIO_PIN_10
+#define CLK_IN_GPIO_Port GPIOB
+#define LD4_Pin GPIO_PIN_12
+#define LD4_GPIO_Port GPIOD
+#define LD3_Pin GPIO_PIN_13
+#define LD3_GPIO_Port GPIOD
+#define LD5_Pin GPIO_PIN_14
+#define LD5_GPIO_Port GPIOD
+#define LD6_Pin GPIO_PIN_15
+#define LD6_GPIO_Port GPIOD
+#define I2S3_MCK_Pin GPIO_PIN_7
+#define I2S3_MCK_GPIO_Port GPIOC
+#define VBUS_FS_Pin GPIO_PIN_9
+#define VBUS_FS_GPIO_Port GPIOA
+#define OTG_FS_ID_Pin GPIO_PIN_10
+#define OTG_FS_ID_GPIO_Port GPIOA
+#define OTG_FS_DM_Pin GPIO_PIN_11
+#define OTG_FS_DM_GPIO_Port GPIOA
+#define OTG_FS_DP_Pin GPIO_PIN_12
+#define OTG_FS_DP_GPIO_Port GPIOA
 #define SWDIO_Pin GPIO_PIN_13
 #define SWDIO_GPIO_Port GPIOA
 #define SWCLK_Pin GPIO_PIN_14
 #define SWCLK_GPIO_Port GPIOA
-#define uSD_D2_Pin GPIO_PIN_10
-#define uSD_D2_GPIO_Port GPIOC
-#define uSD_D3_Pin GPIO_PIN_11
-#define uSD_D3_GPIO_Port GPIOC
-#define uSD_CLK_Pin GPIO_PIN_12
-#define uSD_CLK_GPIO_Port GPIOC
-#define D2_Pin GPIO_PIN_0
-#define D2_GPIO_Port GPIOD
-#define D3_Pin GPIO_PIN_1
-#define D3_GPIO_Port GPIOD
-#define uSD_CMD_Pin GPIO_PIN_2
-#define uSD_CMD_GPIO_Port GPIOD
-#define uSD_DETECT_Pin GPIO_PIN_3
-#define uSD_DETECT_GPIO_Port GPIOD
-#define FMC_NOE_Pin GPIO_PIN_4
-#define FMC_NOE_GPIO_Port GPIOD
-#define FMC_NWE_Pin GPIO_PIN_5
-#define FMC_NWE_GPIO_Port GPIOD
-#define FMC_NE1_Pin GPIO_PIN_7
-#define FMC_NE1_GPIO_Port GPIOD
+#define I2S3_SCK_Pin GPIO_PIN_10
+#define I2S3_SCK_GPIO_Port GPIOC
+#define I2S3_SD_Pin GPIO_PIN_12
+#define I2S3_SD_GPIO_Port GPIOC
+#define Audio_RST_Pin GPIO_PIN_4
+#define Audio_RST_GPIO_Port GPIOD
+#define OTG_FS_OverCurrent_Pin GPIO_PIN_5
+#define OTG_FS_OverCurrent_GPIO_Port GPIOD
 #define SWO_Pin GPIO_PIN_3
 #define SWO_GPIO_Port GPIOB
-#define CODEC_I2S3ext_SD_Pin GPIO_PIN_4
-#define CODEC_I2S3ext_SD_GPIO_Port GPIOB
-#define CODEC_I2S3_SD_Pin GPIO_PIN_5
-#define CODEC_I2S3_SD_GPIO_Port GPIOB
-#define I2C1_SCL_Pin GPIO_PIN_6
-#define I2C1_SCL_GPIO_Port GPIOB
-#define I2C1_SDA_Pin GPIO_PIN_7
-#define I2C1_SDA_GPIO_Port GPIOB
-#define I2C2_SDA_Pin GPIO_PIN_9
-#define I2C2_SDA_GPIO_Port GPIOB
-#define LED1_Pin GPIO_PIN_0
-#define LED1_GPIO_Port GPIOE
-#define LED2_Pin GPIO_PIN_1
-#define LED2_GPIO_Port GPIOE
-
-UART_HandleTypeDef huart2;
-
-/*
-#include "shared-module/gamepad/__init__.h"
-#include "common-hal/microcontroller/Pin.h"
-#include "common-hal/bleio/__init__.h"
-#include "common-hal/busio/I2C.h"
-#include "common-hal/busio/SPI.h"
-#include "common-hal/busio/UART.h"
-#include "common-hal/pulseio/PWMOut.h"
-#include "common-hal/pulseio/PulseOut.h"
-#include "common-hal/pulseio/PulseIn.h"
-#include "common-hal/rtc/RTC.h"
-
-*/
-
-//#include "shared-bindings/rtc/__init__.h"
+#define Audio_SCL_Pin GPIO_PIN_6
+#define Audio_SCL_GPIO_Port GPIOB
+#define Audio_SDA_Pin GPIO_PIN_9
+#define Audio_SDA_GPIO_Port GPIOB
+#define MEMS_INT2_Pin GPIO_PIN_1
+#define MEMS_INT2_GPIO_Port GPIOE
 
 static void power_warning_handler(void) {
     reset_into_safe_mode(BROWNOUT);
@@ -209,7 +108,7 @@ static void power_warning_handler(void) {
 safe_mode_t port_init(void) {
 	HAL_Init();
 
-	//System clock init
+	//sys clock
 	RCC_OscInitTypeDef RCC_OscInitStruct = {0};
 	RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};
 	RCC_PeriphCLKInitTypeDef PeriphClkInitStruct = {0};
@@ -219,17 +118,14 @@ safe_mode_t port_init(void) {
 	__HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE1);
 	/** Initializes the CPU, AHB and APB busses clocks 
 	*/
-	RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSI|RCC_OSCILLATORTYPE_HSE;
-	RCC_OscInitStruct.HSEState = RCC_HSE_BYPASS;
-	RCC_OscInitStruct.HSIState = RCC_HSI_ON;
-	RCC_OscInitStruct.HSICalibrationValue = RCC_HSICALIBRATION_DEFAULT;
+	RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE;
+	RCC_OscInitStruct.HSEState = RCC_HSE_ON;
 	RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
 	RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;
 	RCC_OscInitStruct.PLL.PLLM = 4;
-	RCC_OscInitStruct.PLL.PLLN = 72;
-	RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV2;
-	RCC_OscInitStruct.PLL.PLLQ = 3;
-	RCC_OscInitStruct.PLL.PLLR = 2;
+	RCC_OscInitStruct.PLL.PLLN = 192;
+	RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV4;
+	RCC_OscInitStruct.PLL.PLLQ = 8;
 	HAL_RCC_OscConfig(&RCC_OscInitStruct);
 	/** Initializes the CPU, AHB and APB busses clocks 
 	*/
@@ -237,88 +133,87 @@ safe_mode_t port_init(void) {
 	                      |RCC_CLOCKTYPE_PCLK1|RCC_CLOCKTYPE_PCLK2;
 	RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
 	RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
-	RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV2;
+	RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV4;
 	RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;
-	HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_2);
-
-	PeriphClkInitStruct.PeriphClockSelection = RCC_PERIPHCLK_I2S_APB1|RCC_PERIPHCLK_SDIO
-	                      |RCC_PERIPHCLK_CLK48;
-	PeriphClkInitStruct.PLLI2S.PLLI2SN = 50;
-	PeriphClkInitStruct.PLLI2S.PLLI2SM = 4;
+	HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_3);
+	PeriphClkInitStruct.PeriphClockSelection = RCC_PERIPHCLK_I2S;
+	PeriphClkInitStruct.PLLI2S.PLLI2SN = 200;
+	PeriphClkInitStruct.PLLI2S.PLLI2SM = 5;
 	PeriphClkInitStruct.PLLI2S.PLLI2SR = 2;
-	PeriphClkInitStruct.PLLI2S.PLLI2SQ = 2;
-	PeriphClkInitStruct.Clk48ClockSelection = RCC_CLK48CLKSOURCE_PLLQ;
-	PeriphClkInitStruct.SdioClockSelection = RCC_SDIOCLKSOURCE_CLK48;
-	PeriphClkInitStruct.PLLI2SSelection = RCC_PLLI2SCLKSOURCE_PLLSRC;
-	PeriphClkInitStruct.I2sApb1ClockSelection = RCC_I2SAPB1CLKSOURCE_PLLI2S;
 	HAL_RCCEx_PeriphCLKConfig(&PeriphClkInitStruct);
 
-	HAL_RCC_MCOConfig(RCC_MCO1, RCC_MCO1SOURCE_HSI, RCC_MCODIV_1);
-
-	//GPIO Init
+	//GPIO setup
 	GPIO_InitTypeDef GPIO_InitStruct = {0};
 	/* GPIO Ports Clock Enable */
 	__HAL_RCC_GPIOE_CLK_ENABLE();
 	__HAL_RCC_GPIOC_CLK_ENABLE();
-	__HAL_RCC_GPIOF_CLK_ENABLE();
 	__HAL_RCC_GPIOH_CLK_ENABLE();
 	__HAL_RCC_GPIOA_CLK_ENABLE();
 	__HAL_RCC_GPIOB_CLK_ENABLE();
-	__HAL_RCC_GPIOG_CLK_ENABLE();
 	__HAL_RCC_GPIOD_CLK_ENABLE();
+
 	/*Configure GPIO pin Output Level */
-	HAL_GPIO_WritePin(GPIOE, LED3_Pin|LED4_Pin|LED1_Pin|LED2_Pin, GPIO_PIN_RESET);
+	HAL_GPIO_WritePin(OTG_FS_PowerSwitchOn_GPIO_Port, OTG_FS_PowerSwitchOn_Pin, GPIO_PIN_SET);
+
 	/*Configure GPIO pin Output Level */
-	HAL_GPIO_WritePin(GPIOF, LCD_BLCTRL_Pin|EXT_RESET_Pin|CTP_RST_Pin, GPIO_PIN_RESET);
-	/*Configure GPIO pin Output Level */
-	HAL_GPIO_WritePin(LCD_RESET_GPIO_Port, LCD_RESET_Pin, GPIO_PIN_RESET);
-	/*Configure GPIO pin Output Level */
-	HAL_GPIO_WritePin(USB_OTGFS_PPWR_EN_GPIO_Port, USB_OTGFS_PPWR_EN_Pin, GPIO_PIN_SET);
-	/*Configure GPIO pins : LED3_Pin LED4_Pin LED1_Pin LED2_Pin */
-	GPIO_InitStruct.Pin = LED3_Pin|LED4_Pin|LED1_Pin|LED2_Pin;
-	GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_OD;
+	HAL_GPIO_WritePin(GPIOD, LD4_Pin|LD3_Pin|LD5_Pin|LD6_Pin 
+	                      |Audio_RST_Pin, GPIO_PIN_RESET);
+
+	/*Configure GPIO pin : DATA_Ready_Pin */
+	GPIO_InitStruct.Pin = DATA_Ready_Pin;
+	GPIO_InitStruct.Mode = GPIO_MODE_INPUT;
+	GPIO_InitStruct.Pull = GPIO_NOPULL;
+	HAL_GPIO_Init(DATA_Ready_GPIO_Port, &GPIO_InitStruct);
+
+	/*Configure GPIO pin : CS_I2C_SPI_Pin */
+	GPIO_InitStruct.Pin = CS_I2C_SPI_Pin;
+	GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
 	GPIO_InitStruct.Pull = GPIO_NOPULL;
 	GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
+	HAL_GPIO_Init(CS_I2C_SPI_GPIO_Port, &GPIO_InitStruct);
+
+	/*Configure GPIO pins : INT1_Pin INT2_Pin MEMS_INT2_Pin */
+	GPIO_InitStruct.Pin = INT1_Pin|INT2_Pin|MEMS_INT2_Pin;
+	GPIO_InitStruct.Mode = GPIO_MODE_EVT_RISING;
+	GPIO_InitStruct.Pull = GPIO_NOPULL;
 	HAL_GPIO_Init(GPIOE, &GPIO_InitStruct);
-	/*Configure GPIO pin : USB_OTGFS_PPWR_EN_Pin */
-	GPIO_InitStruct.Pin = USB_OTGFS_PPWR_EN_Pin;
-	GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_OD;
+
+	/*Configure GPIO pin : OTG_FS_PowerSwitchOn_Pin */
+	GPIO_InitStruct.Pin = OTG_FS_PowerSwitchOn_Pin;
+	GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
 	GPIO_InitStruct.Pull = GPIO_NOPULL;
 	GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
-	HAL_GPIO_Init(USB_OTGFS_PPWR_EN_GPIO_Port, &GPIO_InitStruct);
+	HAL_GPIO_Init(OTG_FS_PowerSwitchOn_GPIO_Port, &GPIO_InitStruct);
+
+	/*Configure GPIO pin : PA0 */
+	GPIO_InitStruct.Pin = GPIO_PIN_0;
+	GPIO_InitStruct.Mode = GPIO_MODE_EVT_RISING;
+	GPIO_InitStruct.Pull = GPIO_NOPULL;
+	HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
+
+	/*Configure GPIO pins : LD4_Pin LD3_Pin LD5_Pin LD6_Pin 
+	                       Audio_RST_Pin */
+	GPIO_InitStruct.Pin = LD4_Pin|LD3_Pin|LD5_Pin|LD6_Pin 
+	                      |Audio_RST_Pin;
+	GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
+	GPIO_InitStruct.Pull = GPIO_NOPULL;
+	GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
+	HAL_GPIO_Init(GPIOD, &GPIO_InitStruct);
+
+	/*Configure GPIO pin : OTG_FS_OverCurrent_Pin */
+	GPIO_InitStruct.Pin = OTG_FS_OverCurrent_Pin;
+	GPIO_InitStruct.Mode = GPIO_MODE_INPUT;
+	GPIO_InitStruct.Pull = GPIO_NOPULL;
+	HAL_GPIO_Init(OTG_FS_OverCurrent_GPIO_Port, &GPIO_InitStruct);
 
 	//Status LED chain
-	HAL_GPIO_WritePin(GPIOE, GPIO_PIN_0, GPIO_PIN_RESET); //LED 1
-	HAL_GPIO_WritePin(GPIOE, GPIO_PIN_1, GPIO_PIN_SET); //LED 2
-	HAL_GPIO_WritePin(GPIOE, GPIO_PIN_2, GPIO_PIN_SET); //LED 3
-	HAL_GPIO_WritePin(GPIOE, GPIO_PIN_3, GPIO_PIN_SET); //LED 4
-
-	//Status LED chain
-	// HAL_GPIO_WritePin(LED1_GPIO_Port, LED1_Pin, GPIO_PIN_RESET);
-	// HAL_GPIO_WritePin(LED2_GPIO_Port, LED2_Pin, GPIO_PIN_SET);
-	// HAL_GPIO_WritePin(LED3_GPIO_Port, LED3_Pin, GPIO_PIN_SET);
- //    HAL_GPIO_WritePin(LED4_GPIO_Port, LED4_Pin, GPIO_PIN_SET);
+	HAL_GPIO_WritePin(GPIOD, LD4_Pin, GPIO_PIN_RESET); //LED 1
+	HAL_GPIO_WritePin(GPIOD, LD3_Pin, GPIO_PIN_SET); //LED 2
+	HAL_GPIO_WritePin(GPIOD, LD5_Pin, GPIO_PIN_SET); //LED 3
+	HAL_GPIO_WritePin(GPIOD, LD6_Pin, GPIO_PIN_SET); //LED 4
 
     tick_init();
 
-	//UART testing
-	// huart2.Instance = USART2;
-	// huart2.Init.BaudRate = 115200;
-	// huart2.Init.WordLength = UART_WORDLENGTH_8B;
-	// huart2.Init.StopBits = UART_STOPBITS_1;
-	// huart2.Init.Parity = UART_PARITY_NONE;
-	// huart2.Init.Mode = UART_MODE_TX_RX;
-	// huart2.Init.HwFlowCtl = UART_HWCONTROL_NONE;
-	// huart2.Init.OverSampling = UART_OVERSAMPLING_16;
-	// if (HAL_UART_Init(&huart2) == HAL_OK)
-	// {
-	// 	HAL_GPIO_WritePin(LED2_GPIO_Port, LED2_Pin, GPIO_PIN_RESET);
-	// }
-
-	// HAL_UART_Transmit(&huart2, (uint8_t*)"helloworld", 10, 5000);
-	// HAL_GPIO_WritePin(LED3_GPIO_Port, LED3_Pin, GPIO_PIN_RESET);
-
-    
     board_init(); 
 
     return NO_SAFE_MODE;
diff --git a/ports/stm32f4/supervisor/port_412.c b/ports/stm32f4/supervisor/port_412.c
new file mode 100644
index 0000000000..0a0e08fdf7
--- /dev/null
+++ b/ports/stm32f4/supervisor/port_412.c
@@ -0,0 +1,328 @@
+/*
+ * 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 "supervisor/port.h"
+#include "boards/board.h"
+
+#include "tick.h"
+//#include "shared-bindings/rtc/__init__.h"
+
+#include "stm32f4xx_hal.h"
+
+#define LED3_Pin GPIO_PIN_2
+#define LED3_GPIO_Port GPIOE
+#define LED4_Pin GPIO_PIN_3
+#define LED4_GPIO_Port GPIOE
+#define DFSDM_DATIN3_Pin GPIO_PIN_4
+#define DFSDM_DATIN3_GPIO_Port GPIOE
+#define A0_Pin GPIO_PIN_0
+#define A0_GPIO_Port GPIOF
+#define LCD_BLCTRL_Pin GPIO_PIN_5
+#define LCD_BLCTRL_GPIO_Port GPIOF
+#define QSPI_BK1_IO3_Pin GPIO_PIN_6
+#define QSPI_BK1_IO3_GPIO_Port GPIOF
+#define QSPI_BK1_IO2_Pin GPIO_PIN_7
+#define QSPI_BK1_IO2_GPIO_Port GPIOF
+#define QSPI_BK1_IO0_Pin GPIO_PIN_8
+#define QSPI_BK1_IO0_GPIO_Port GPIOF
+#define QSPI_BK1_IO1_Pin GPIO_PIN_9
+#define QSPI_BK1_IO1_GPIO_Port GPIOF
+#define STLK_MCO_Pin GPIO_PIN_0
+#define STLK_MCO_GPIO_Port GPIOH
+#define DFSDM_CKOUT_Pin GPIO_PIN_2
+#define DFSDM_CKOUT_GPIO_Port GPIOC
+#define JOY_SEL_Pin GPIO_PIN_0
+#define JOY_SEL_GPIO_Port GPIOA
+#define STLINK_RX_Pin GPIO_PIN_2
+#define STLINK_RX_GPIO_Port GPIOA
+#define STLINK_TX_Pin GPIO_PIN_3
+#define STLINK_TX_GPIO_Port GPIOA
+#define CODEC_I2S3_WS_Pin GPIO_PIN_4
+#define CODEC_I2S3_WS_GPIO_Port GPIOA
+#define DFSDM_DATIN0_Pin GPIO_PIN_1
+#define DFSDM_DATIN0_GPIO_Port GPIOB
+#define QSPI_CLK_Pin GPIO_PIN_2
+#define QSPI_CLK_GPIO_Port GPIOB
+#define EXT_RESET_Pin GPIO_PIN_11
+#define EXT_RESET_GPIO_Port GPIOF
+#define CTP_RST_Pin GPIO_PIN_12
+#define CTP_RST_GPIO_Port GPIOF
+#define JOY_RIGHT_Pin GPIO_PIN_14
+#define JOY_RIGHT_GPIO_Port GPIOF
+#define JOY_LEFT_Pin GPIO_PIN_15
+#define JOY_LEFT_GPIO_Port GPIOF
+#define JOY_UP_Pin GPIO_PIN_0
+#define JOY_UP_GPIO_Port GPIOG
+#define JOY_DOWN_Pin GPIO_PIN_1
+#define JOY_DOWN_GPIO_Port GPIOG
+#define D4_Pin GPIO_PIN_7
+#define D4_GPIO_Port GPIOE
+#define D5_Pin GPIO_PIN_8
+#define D5_GPIO_Port GPIOE
+#define D6_Pin GPIO_PIN_9
+#define D6_GPIO_Port GPIOE
+#define D7_Pin GPIO_PIN_10
+#define D7_GPIO_Port GPIOE
+#define D8_Pin GPIO_PIN_11
+#define D8_GPIO_Port GPIOE
+#define D9_Pin GPIO_PIN_12
+#define D9_GPIO_Port GPIOE
+#define D10_Pin GPIO_PIN_13
+#define D10_GPIO_Port GPIOE
+#define D11_Pin GPIO_PIN_14
+#define D11_GPIO_Port GPIOE
+#define D12_Pin GPIO_PIN_15
+#define D12_GPIO_Port GPIOE
+#define I2C2_SCL_Pin GPIO_PIN_10
+#define I2C2_SCL_GPIO_Port GPIOB
+#define M2_CKIN_Pin GPIO_PIN_11
+#define M2_CKIN_GPIO_Port GPIOB
+#define CODEC_I2S3_SCK_Pin GPIO_PIN_12
+#define CODEC_I2S3_SCK_GPIO_Port GPIOB
+#define D13_Pin GPIO_PIN_8
+#define D13_GPIO_Port GPIOD
+#define D14_Pin GPIO_PIN_9
+#define D14_GPIO_Port GPIOD
+#define D15_Pin GPIO_PIN_10
+#define D15_GPIO_Port GPIOD
+#define LCD_RESET_Pin GPIO_PIN_11
+#define LCD_RESET_GPIO_Port GPIOD
+#define D0_Pin GPIO_PIN_14
+#define D0_GPIO_Port GPIOD
+#define D1_Pin GPIO_PIN_15
+#define D1_GPIO_Port GPIOD
+#define CODEC_INT_Pin GPIO_PIN_2
+#define CODEC_INT_GPIO_Port GPIOG
+#define LCD_TE_Pin GPIO_PIN_4
+#define LCD_TE_GPIO_Port GPIOG
+#define CTP_INT_Pin GPIO_PIN_5
+#define CTP_INT_GPIO_Port GPIOG
+#define QSPI_BK1_NCS_Pin GPIO_PIN_6
+#define QSPI_BK1_NCS_GPIO_Port GPIOG
+#define USB_OTGFS_OVRCR_Pin GPIO_PIN_7
+#define USB_OTGFS_OVRCR_GPIO_Port GPIOG
+#define USB_OTGFS_PPWR_EN_Pin GPIO_PIN_8
+#define USB_OTGFS_PPWR_EN_GPIO_Port GPIOG
+#define CODEC_I2S3_MCK_Pin GPIO_PIN_7
+#define CODEC_I2S3_MCK_GPIO_Port GPIOC
+#define uSD_D0_Pin GPIO_PIN_8
+#define uSD_D0_GPIO_Port GPIOC
+#define uSD_D1_Pin GPIO_PIN_9
+#define uSD_D1_GPIO_Port GPIOC
+#define M2_CKINA8_Pin GPIO_PIN_8
+#define M2_CKINA8_GPIO_Port GPIOA
+#define USB_OTGFS_VBUS_Pin GPIO_PIN_9
+#define USB_OTGFS_VBUS_GPIO_Port GPIOA
+#define USB_OTGFS_ID_Pin GPIO_PIN_10
+#define USB_OTGFS_ID_GPIO_Port GPIOA
+#define USB_OTGFS_DM_Pin GPIO_PIN_11
+#define USB_OTGFS_DM_GPIO_Port GPIOA
+#define USB_OTGFS_DP_Pin GPIO_PIN_12
+#define USB_OTGFS_DP_GPIO_Port GPIOA
+#define SWDIO_Pin GPIO_PIN_13
+#define SWDIO_GPIO_Port GPIOA
+#define SWCLK_Pin GPIO_PIN_14
+#define SWCLK_GPIO_Port GPIOA
+#define uSD_D2_Pin GPIO_PIN_10
+#define uSD_D2_GPIO_Port GPIOC
+#define uSD_D3_Pin GPIO_PIN_11
+#define uSD_D3_GPIO_Port GPIOC
+#define uSD_CLK_Pin GPIO_PIN_12
+#define uSD_CLK_GPIO_Port GPIOC
+#define D2_Pin GPIO_PIN_0
+#define D2_GPIO_Port GPIOD
+#define D3_Pin GPIO_PIN_1
+#define D3_GPIO_Port GPIOD
+#define uSD_CMD_Pin GPIO_PIN_2
+#define uSD_CMD_GPIO_Port GPIOD
+#define uSD_DETECT_Pin GPIO_PIN_3
+#define uSD_DETECT_GPIO_Port GPIOD
+#define FMC_NOE_Pin GPIO_PIN_4
+#define FMC_NOE_GPIO_Port GPIOD
+#define FMC_NWE_Pin GPIO_PIN_5
+#define FMC_NWE_GPIO_Port GPIOD
+#define FMC_NE1_Pin GPIO_PIN_7
+#define FMC_NE1_GPIO_Port GPIOD
+#define SWO_Pin GPIO_PIN_3
+#define SWO_GPIO_Port GPIOB
+#define CODEC_I2S3ext_SD_Pin GPIO_PIN_4
+#define CODEC_I2S3ext_SD_GPIO_Port GPIOB
+#define CODEC_I2S3_SD_Pin GPIO_PIN_5
+#define CODEC_I2S3_SD_GPIO_Port GPIOB
+#define I2C1_SCL_Pin GPIO_PIN_6
+#define I2C1_SCL_GPIO_Port GPIOB
+#define I2C1_SDA_Pin GPIO_PIN_7
+#define I2C1_SDA_GPIO_Port GPIOB
+#define I2C2_SDA_Pin GPIO_PIN_9
+#define I2C2_SDA_GPIO_Port GPIOB
+#define LED1_Pin GPIO_PIN_0
+#define LED1_GPIO_Port GPIOE
+#define LED2_Pin GPIO_PIN_1
+#define LED2_GPIO_Port GPIOE
+
+UART_HandleTypeDef huart2;
+
+/*
+#include "shared-module/gamepad/__init__.h"
+#include "common-hal/microcontroller/Pin.h"
+#include "common-hal/bleio/__init__.h"
+#include "common-hal/busio/I2C.h"
+#include "common-hal/busio/SPI.h"
+#include "common-hal/busio/UART.h"
+#include "common-hal/pulseio/PWMOut.h"
+#include "common-hal/pulseio/PulseOut.h"
+#include "common-hal/pulseio/PulseIn.h"
+#include "common-hal/rtc/RTC.h"
+
+*/
+
+//#include "shared-bindings/rtc/__init__.h"
+
+static void power_warning_handler(void) {
+    reset_into_safe_mode(BROWNOUT);
+}
+
+safe_mode_t port_init(void) {
+	HAL_Init();
+
+	//System clock init
+	RCC_OscInitTypeDef RCC_OscInitStruct = {0};
+	RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};
+	RCC_PeriphCLKInitTypeDef PeriphClkInitStruct = {0};
+	/** Configure the main internal regulator output voltage 
+	*/
+	__HAL_RCC_PWR_CLK_ENABLE();
+	__HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE1);
+	/** Initializes the CPU, AHB and APB busses clocks 
+	*/
+	RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSI|RCC_OSCILLATORTYPE_HSE;
+	RCC_OscInitStruct.HSEState = RCC_HSE_ON;
+	RCC_OscInitStruct.HSIState = RCC_HSI_ON;
+	RCC_OscInitStruct.HSICalibrationValue = RCC_HSICALIBRATION_DEFAULT;
+	RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
+	RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;
+	RCC_OscInitStruct.PLL.PLLM = 4;
+	RCC_OscInitStruct.PLL.PLLN = 72;
+	RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV2;
+	RCC_OscInitStruct.PLL.PLLQ = 3;
+	RCC_OscInitStruct.PLL.PLLR = 2;
+	HAL_RCC_OscConfig(&RCC_OscInitStruct);
+	/** Initializes the CPU, AHB and APB busses clocks 
+	*/
+	RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK|RCC_CLOCKTYPE_SYSCLK
+	                      |RCC_CLOCKTYPE_PCLK1|RCC_CLOCKTYPE_PCLK2;
+	RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
+	RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
+	RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV2;
+	RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;
+	HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_2);
+
+	PeriphClkInitStruct.PeriphClockSelection = RCC_PERIPHCLK_I2S_APB1|RCC_PERIPHCLK_SDIO
+	                      |RCC_PERIPHCLK_CLK48;
+	PeriphClkInitStruct.PLLI2S.PLLI2SN = 50;
+	PeriphClkInitStruct.PLLI2S.PLLI2SM = 4;
+	PeriphClkInitStruct.PLLI2S.PLLI2SR = 2;
+	PeriphClkInitStruct.PLLI2S.PLLI2SQ = 2;
+	PeriphClkInitStruct.Clk48ClockSelection = RCC_CLK48CLKSOURCE_PLLQ;
+	PeriphClkInitStruct.SdioClockSelection = RCC_SDIOCLKSOURCE_CLK48;
+	PeriphClkInitStruct.PLLI2SSelection = RCC_PLLI2SCLKSOURCE_PLLSRC;
+	PeriphClkInitStruct.I2sApb1ClockSelection = RCC_I2SAPB1CLKSOURCE_PLLI2S;
+	HAL_RCCEx_PeriphCLKConfig(&PeriphClkInitStruct);
+
+	HAL_RCC_MCOConfig(RCC_MCO1, RCC_MCO1SOURCE_HSI, RCC_MCODIV_1);
+
+	//GPIO Init
+	GPIO_InitTypeDef GPIO_InitStruct = {0};
+	/* GPIO Ports Clock Enable */
+	__HAL_RCC_GPIOE_CLK_ENABLE();
+	__HAL_RCC_GPIOC_CLK_ENABLE();
+	__HAL_RCC_GPIOF_CLK_ENABLE();
+	__HAL_RCC_GPIOH_CLK_ENABLE();
+	__HAL_RCC_GPIOA_CLK_ENABLE();
+	__HAL_RCC_GPIOB_CLK_ENABLE();
+	__HAL_RCC_GPIOG_CLK_ENABLE();
+	__HAL_RCC_GPIOD_CLK_ENABLE();
+	/*Configure GPIO pin Output Level */
+	HAL_GPIO_WritePin(GPIOE, LED3_Pin|LED4_Pin|LED1_Pin|LED2_Pin, GPIO_PIN_RESET);
+	/*Configure GPIO pin Output Level */
+	HAL_GPIO_WritePin(GPIOF, LCD_BLCTRL_Pin|EXT_RESET_Pin|CTP_RST_Pin, GPIO_PIN_RESET);
+	/*Configure GPIO pin Output Level */
+	HAL_GPIO_WritePin(LCD_RESET_GPIO_Port, LCD_RESET_Pin, GPIO_PIN_RESET);
+	/*Configure GPIO pin Output Level */
+	HAL_GPIO_WritePin(USB_OTGFS_PPWR_EN_GPIO_Port, USB_OTGFS_PPWR_EN_Pin, GPIO_PIN_SET);
+	/*Configure GPIO pins : LED3_Pin LED4_Pin LED1_Pin LED2_Pin */
+	GPIO_InitStruct.Pin = LED3_Pin|LED4_Pin|LED1_Pin|LED2_Pin;
+	GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_OD;
+	GPIO_InitStruct.Pull = GPIO_NOPULL;
+	GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
+	HAL_GPIO_Init(GPIOE, &GPIO_InitStruct);
+	/*Configure GPIO pin : USB_OTGFS_PPWR_EN_Pin */
+	GPIO_InitStruct.Pin = USB_OTGFS_PPWR_EN_Pin;
+	GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_OD;
+	GPIO_InitStruct.Pull = GPIO_NOPULL;
+	GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
+	HAL_GPIO_Init(USB_OTGFS_PPWR_EN_GPIO_Port, &GPIO_InitStruct);
+
+	//Status LED chain
+	HAL_GPIO_WritePin(GPIOE, GPIO_PIN_0, GPIO_PIN_RESET); //LED 1
+	HAL_GPIO_WritePin(GPIOE, GPIO_PIN_1, GPIO_PIN_SET); //LED 2
+	HAL_GPIO_WritePin(GPIOE, GPIO_PIN_2, GPIO_PIN_SET); //LED 3
+	HAL_GPIO_WritePin(GPIOE, GPIO_PIN_3, GPIO_PIN_SET); //LED 4
+
+    tick_init();
+	// HAL_GPIO_WritePin(LED3_GPIO_Port, LED3_Pin, GPIO_PIN_RESET);
+
+    board_init(); 
+
+    return NO_SAFE_MODE;
+}
+
+void reset_port(void) {
+
+}
+
+void reset_to_bootloader(void) {
+
+}
+
+void reset_cpu(void) {
+
+}
+
+extern uint32_t _ebss;
+// Place the word to save just after our BSS section that gets blanked.
+void port_set_saved_word(uint32_t value) {
+    _ebss = value;
+}
+
+uint32_t port_get_saved_word(void) {
+    return _ebss;
+}
+
+// void HardFault_Handler(void) {
+
+// }
diff --git a/ports/stm32f4/supervisor/usb.c b/ports/stm32f4/supervisor/usb.c
index 09429a15b2..9135235238 100644
--- a/ports/stm32f4/supervisor/usb.c
+++ b/ports/stm32f4/supervisor/usb.c
@@ -42,24 +42,39 @@
 
 
 void init_usb_hardware(void) {
+ // HAL_GPIO_WritePin(GPIOE, GPIO_PIN_1, GPIO_PIN_RESET); //LED 2
   GPIO_InitTypeDef GPIO_InitStruct = {0};
-  __HAL_RCC_GPIOA_CLK_ENABLE();
-  /**USB_OTG_FS GPIO Configuration    
+  /**USB_OTG_FS GPIO Configuration
   PA10     ------> USB_OTG_FS_ID
   PA11     ------> USB_OTG_FS_DM
   PA12     ------> USB_OTG_FS_DP 
   */
-  GPIO_InitStruct.Pin = USB_OTGFS_ID_Pin|USB_OTGFS_DM_Pin|USB_OTGFS_DP_Pin;
+  GPIO_InitStruct.Pin = USB_OTGFS_VBUS_Pin;
+  GPIO_InitStruct.Mode = GPIO_MODE_INPUT;
+  GPIO_InitStruct.Pull = GPIO_NOPULL;
+  HAL_GPIO_Init(USB_OTGFS_VBUS_GPIO_Port, &GPIO_InitStruct);
+
+  GPIO_InitStruct.Pin = USB_OTGFS_DM_Pin|USB_OTGFS_DP_Pin;
   GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
   GPIO_InitStruct.Pull = GPIO_NOPULL;
   GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_VERY_HIGH;
   GPIO_InitStruct.Alternate = GPIO_AF10_OTG_FS;
   HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
 
+  //TinyUSB suggestion
+  GPIO_InitStruct.Pin = USB_OTGFS_ID_Pin;
+  GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
+  GPIO_InitStruct.Pull = GPIO_PULLUP;
+  GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_VERY_HIGH;
+  GPIO_InitStruct.Alternate = GPIO_AF10_OTG_FS;
+  HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
+
   /* Peripheral clock enable */
   __HAL_RCC_USB_OTG_FS_CLK_ENABLE();
 
   /* Peripheral interrupt init */
   HAL_NVIC_SetPriority(OTG_FS_IRQn, 0, 0);
   HAL_NVIC_EnableIRQ(OTG_FS_IRQn);
+
+  //HAL_GPIO_WritePin(GPIOE, GPIO_PIN_2, GPIO_PIN_RESET); //LED 3
 }
diff --git a/supervisor/supervisor.mk b/supervisor/supervisor.mk
index 5490bf0594..11f0adbf9a 100644
--- a/supervisor/supervisor.mk
+++ b/supervisor/supervisor.mk
@@ -51,7 +51,7 @@ else
 	SRC_SUPERVISOR += supervisor/internal_flash.c
 endif
 
-USB=FALSE
+USB=TRUE
 ifeq ($(USB),FALSE)
 	ifeq ($(wildcard supervisor/serial.c),)
 		SRC_SUPERVISOR += supervisor/stub/serial.c