diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 078daee850..d389845a2d 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -147,6 +147,7 @@ jobs:
- "electronut_labs_papyr"
- "escornabot_makech"
- "espruino_pico"
+ - "espruino_wifi"
- "feather_bluefruit_sense"
- "feather_m0_adalogger"
- "feather_m0_basic"
diff --git a/ports/stm32f4/boards/espruino_pico/mpconfigboard.h b/ports/stm32f4/boards/espruino_pico/mpconfigboard.h
index aa179c7931..d4430380c6 100644
--- a/ports/stm32f4/boards/espruino_pico/mpconfigboard.h
+++ b/ports/stm32f4/boards/espruino_pico/mpconfigboard.h
@@ -32,8 +32,8 @@
#define FLASH_SIZE (0x60000)
#define FLASH_PAGE_SIZE (0x4000)
-#define AUTORESET_DELAY_MS 500
+#define AUTORESET_DELAY_MS (500)
#define BOARD_FLASH_SIZE (FLASH_SIZE - 0x4000)
-#define BOARD_OSC_DIV 8
+#define BOARD_OSC_DIV (8)
diff --git a/ports/stm32f4/boards/espruino_wifi/README.MD b/ports/stm32f4/boards/espruino_wifi/README.MD
new file mode 100644
index 0000000000..8c2cd3be2b
--- /dev/null
+++ b/ports/stm32f4/boards/espruino_wifi/README.MD
@@ -0,0 +1,15 @@
+# Flashing the Espruino Wifi
+
+The Espruino Wifi is normally updated via a bootloader activated by the Espruino web app. This approach is not practical for Circuitpython as it takes too much space from the internal filesystem - thus, you will need to follow the instructions for advanced reflashing using the built-in ROM bootloader on all STM32F4 MCUs (instructions sourced from https://www.espruino.com/Wifi#advanced-reflashing)
+
+ - Short out the BOOT0/BTN solder jumper on the back of the board - you can do this by drawing over it with a pencil.
+ - Install ST's DFU utility on Windows, or dfu-util for Mac or Linux
+ - **Mac**: install with Homebrew: `brew install dfu-util`
+ - **Linux**: install with apt-get: `sudo apt-get install dfu-util`
+ - **Windows**: download [ST's application](https://www.st.com/en/development-tools/stsw-stm32080.html) or install the Linux subsystem for Windows 10 and follow the linux instructions.
+ - Hold down the Wifi's button while plugging it into USB (when overwriting Espruino's default firmware)
+ - Navigate to the same directory as your firmware.bin file for Circuitpython and run the following command: `sudo dfu-util -a 0 -s 0x08000000 -D firmware.bin` or use the ST utility on Windows.
+ - Restart the board.
+
+
+To reinstall Espruino, follow the same steps with the latest Espruino Wifi binary from espruino.com/binaries. This will reinstall the usual Espruino bootloader. You must un-short the BOOT0/BTN jumper to re-use the original Espruino Bootloader again. If you used a Pencil mark then you may need to use cleaning fluid and a small brush to totally clear out the graphite.
\ No newline at end of file
diff --git a/ports/stm32f4/boards/espruino_wifi/board.c b/ports/stm32f4/boards/espruino_wifi/board.c
new file mode 100644
index 0000000000..4421970eef
--- /dev/null
+++ b/ports/stm32f4/boards/espruino_wifi/board.c
@@ -0,0 +1,38 @@
+/*
+ * 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/espruino_wifi/mpconfigboard.h b/ports/stm32f4/boards/espruino_wifi/mpconfigboard.h
new file mode 100644
index 0000000000..abdc9e8fac
--- /dev/null
+++ b/ports/stm32f4/boards/espruino_wifi/mpconfigboard.h
@@ -0,0 +1,36 @@
+/*
+ * This file is part of the MicroPython project, http://micropython.org/
+ *
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2020 Lucian Copeland 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 "Espruino Wifi"
+#define MICROPY_HW_MCU_NAME "STM32F411xE"
+
+#define FLASH_SIZE (0x80000) //512K
+#define FLASH_PAGE_SIZE (0x4000) //16K
+
+#define BOARD_OSC_DIV (8)
+#define BOARD_OVERWRITE_SWD (1)
diff --git a/ports/stm32f4/boards/espruino_wifi/mpconfigboard.mk b/ports/stm32f4/boards/espruino_wifi/mpconfigboard.mk
new file mode 100644
index 0000000000..8b28cf07c7
--- /dev/null
+++ b/ports/stm32f4/boards/espruino_wifi/mpconfigboard.mk
@@ -0,0 +1,16 @@
+USB_VID = 0x239A
+USB_PID = 0x8090
+USB_PRODUCT = "Espruino Wifi"
+USB_MANUFACTURER = "Espruino"
+USB_DEVICES = "CDC,MSC"
+
+INTERNAL_FLASH_FILESYSTEM = 1
+LONGINT_IMPL = NONE
+
+MCU_SERIES = m4
+MCU_VARIANT = stm32f4
+MCU_SUB_VARIANT = stm32f411xe
+MCU_PACKAGE = 48
+CMSIS_MCU = STM32F411xE
+LD_FILE = boards/STM32F411VETx_FLASH.ld
+
diff --git a/ports/stm32f4/boards/espruino_wifi/pins.c b/ports/stm32f4/boards/espruino_wifi/pins.c
new file mode 100644
index 0000000000..8800317d50
--- /dev/null
+++ b/ports/stm32f4/boards/espruino_wifi/pins.c
@@ -0,0 +1,39 @@
+#include "shared-bindings/board/__init__.h"
+
+STATIC const mp_rom_map_elem_t board_module_globals_table[] = {
+ //P1
+ { MP_ROM_QSTR(MP_QSTR_A0), MP_ROM_PTR(&pin_PA00) },
+ { MP_ROM_QSTR(MP_QSTR_A1), MP_ROM_PTR(&pin_PA01) },
+ { MP_ROM_QSTR(MP_QSTR_A4), MP_ROM_PTR(&pin_PA04) },
+ { MP_ROM_QSTR(MP_QSTR_A5), MP_ROM_PTR(&pin_PA05) },
+ { MP_ROM_QSTR(MP_QSTR_A6), MP_ROM_PTR(&pin_PA06) },
+ { MP_ROM_QSTR(MP_QSTR_A7), MP_ROM_PTR(&pin_PA07) },
+ { MP_ROM_QSTR(MP_QSTR_B1), MP_ROM_PTR(&pin_PB01) },
+ { MP_ROM_QSTR(MP_QSTR_B10), MP_ROM_PTR(&pin_PB10) },
+ { MP_ROM_QSTR(MP_QSTR_B13), MP_ROM_PTR(&pin_PB13) },
+ { MP_ROM_QSTR(MP_QSTR_B14), MP_ROM_PTR(&pin_PB14) },
+ { MP_ROM_QSTR(MP_QSTR_B15), MP_ROM_PTR(&pin_PB15) },
+
+ { MP_ROM_QSTR(MP_QSTR_B0), MP_ROM_PTR(&pin_PB00) },
+ { MP_ROM_QSTR(MP_QSTR_B9), MP_ROM_PTR(&pin_PB09) },
+ { MP_ROM_QSTR(MP_QSTR_B8), MP_ROM_PTR(&pin_PB08) },
+ { MP_ROM_QSTR(MP_QSTR_B7), MP_ROM_PTR(&pin_PB07) },
+ { MP_ROM_QSTR(MP_QSTR_B6), MP_ROM_PTR(&pin_PB06) },
+ { MP_ROM_QSTR(MP_QSTR_B5), MP_ROM_PTR(&pin_PB05) },
+ { MP_ROM_QSTR(MP_QSTR_B4), MP_ROM_PTR(&pin_PB04) },
+ { MP_ROM_QSTR(MP_QSTR_B3), MP_ROM_PTR(&pin_PB03) },
+
+ { MP_ROM_QSTR(MP_QSTR_A10), MP_ROM_PTR(&pin_PA10) },
+ { MP_ROM_QSTR(MP_QSTR_A8), MP_ROM_PTR(&pin_PA08) },
+
+ { MP_ROM_QSTR(MP_QSTR_LED1), MP_ROM_PTR(&pin_PB02) },
+ { MP_ROM_QSTR(MP_QSTR_LED2), MP_ROM_PTR(&pin_PB12) },
+ { MP_ROM_QSTR(MP_QSTR_BTN), MP_ROM_PTR(&pin_PC13) },
+
+ { MP_ROM_QSTR(MP_QSTR_ESP_RX), MP_ROM_PTR(&pin_PA02) },
+ { MP_ROM_QSTR(MP_QSTR_ESP_TX), MP_ROM_PTR(&pin_PA03) },
+ { MP_ROM_QSTR(MP_QSTR_ESP_GPIO0), MP_ROM_PTR(&pin_PA13) },
+ { MP_ROM_QSTR(MP_QSTR_ESP_CHPD), MP_ROM_PTR(&pin_PA14) },
+ { MP_ROM_QSTR(MP_QSTR_ESP_GPIO13), MP_ROM_PTR(&pin_PA15) },
+};
+MP_DEFINE_CONST_DICT(board_module_globals, board_module_globals_table);
diff --git a/ports/stm32f4/boards/espruino_wifi/stm32f4xx_hal_conf.h b/ports/stm32f4/boards/espruino_wifi/stm32f4xx_hal_conf.h
new file mode 100644
index 0000000000..18d9d60ebe
--- /dev/null
+++ b/ports/stm32f4/boards/espruino_wifi/stm32f4xx_hal_conf.h
@@ -0,0 +1,439 @@
+/**
+ ******************************************************************************
+ * @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
+ *
+ *
© Copyright (c) 2017 STMicroelectronics.
+ * All rights reserved.
+ *
+ * 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/feather_stm32f405_express/mpconfigboard.h b/ports/stm32f4/boards/feather_stm32f405_express/mpconfigboard.h
index 3ea469383d..6600fcf671 100644
--- a/ports/stm32f4/boards/feather_stm32f405_express/mpconfigboard.h
+++ b/ports/stm32f4/boards/feather_stm32f405_express/mpconfigboard.h
@@ -34,7 +34,7 @@
#define MICROPY_HW_NEOPIXEL (&pin_PC00)
-#define BOARD_OSC_DIV 12
+#define BOARD_OSC_DIV (12)
// On-board flash
#define SPI_FLASH_MOSI_PIN (&pin_PB05)
@@ -44,7 +44,7 @@
// Bootloader only
#ifdef UF2_BOOTLOADER_ENABLED
- #define BOARD_VTOR_DEFER //Leave VTOR relocation to bootloader
+ #define BOARD_VTOR_DEFER (1) //Leave VTOR relocation to bootloader
#endif
#define DEFAULT_I2C_BUS_SCL (&pin_PB06)
diff --git a/ports/stm32f4/boards/meowbit_v121/mpconfigboard.h b/ports/stm32f4/boards/meowbit_v121/mpconfigboard.h
index c849e03b6c..babf54a3a9 100644
--- a/ports/stm32f4/boards/meowbit_v121/mpconfigboard.h
+++ b/ports/stm32f4/boards/meowbit_v121/mpconfigboard.h
@@ -35,9 +35,9 @@
#define AUTORESET_DELAY_MS 500
#define BOARD_FLASH_SIZE (FLASH_SIZE - 0x4000)
-#define BOARD_OSC_DIV 12
-#define BOARD_NO_VBUS_SENSE
-#define BOARD_VTOR_DEFER //Leave VTOR relocation to bootloader
+#define BOARD_OSC_DIV (12)
+#define BOARD_NO_VBUS_SENSE (1)
+#define BOARD_VTOR_DEFER (1) //Leave VTOR relocation to bootloader
#define BOARD_USE_INTERNAL_SPI
// On-board flash
diff --git a/ports/stm32f4/boards/pyb_nano_v2/mpconfigboard.h b/ports/stm32f4/boards/pyb_nano_v2/mpconfigboard.h
index 7980ca93d6..965e7d5ff4 100644
--- a/ports/stm32f4/boards/pyb_nano_v2/mpconfigboard.h
+++ b/ports/stm32f4/boards/pyb_nano_v2/mpconfigboard.h
@@ -32,7 +32,7 @@
#define FLASH_SIZE (0x80000)
#define FLASH_PAGE_SIZE (0x4000)
-#define BOARD_OSC_DIV 8
+#define BOARD_OSC_DIV (8)
// On-board flash
#define SPI_FLASH_MOSI_PIN (&pin_PB15)
@@ -40,8 +40,8 @@
#define SPI_FLASH_SCK_PIN (&pin_PB13)
#define SPI_FLASH_CS_PIN (&pin_PB12)
-#define CIRCUITPY_AUTORELOAD_DELAY_MS 500
+#define CIRCUITPY_AUTORELOAD_DELAY_MS (500)
#define BOARD_FLASH_SIZE (FLASH_SIZE - 0x2000 - 0xC000)
-#define AUTORESET_DELAY_MS 500
+#define AUTORESET_DELAY_MS (500)
diff --git a/ports/stm32f4/boards/pyboard_v11/mpconfigboard.h b/ports/stm32f4/boards/pyboard_v11/mpconfigboard.h
index 2da2c6da95..398731d30c 100644
--- a/ports/stm32f4/boards/pyboard_v11/mpconfigboard.h
+++ b/ports/stm32f4/boards/pyboard_v11/mpconfigboard.h
@@ -32,7 +32,7 @@
#define FLASH_SIZE (0x100000)
#define FLASH_PAGE_SIZE (0x4000)
-#define BOARD_OSC_DIV 12
+#define BOARD_OSC_DIV (12)
#define DEFAULT_I2C_BUS_SCL (&pin_PB06)
#define DEFAULT_I2C_BUS_SDA (&pin_PB07)
diff --git a/ports/stm32f4/boards/stm32f411ce_blackpill/mpconfigboard.h b/ports/stm32f4/boards/stm32f411ce_blackpill/mpconfigboard.h
index 05e2a384a1..2ae1a29268 100644
--- a/ports/stm32f4/boards/stm32f411ce_blackpill/mpconfigboard.h
+++ b/ports/stm32f4/boards/stm32f411ce_blackpill/mpconfigboard.h
@@ -32,8 +32,8 @@
#define FLASH_SIZE (0x80000)
#define FLASH_PAGE_SIZE (0x4000)
-#define BOARD_OSC_DIV 25
-#define BOARD_NO_VBUS_SENSE
+#define BOARD_OSC_DIV (25)
+#define BOARD_NO_VBUS_SENSE (1)
// On-board flash
// #define SPI_FLASH_MOSI_PIN (&pin_PA07)
@@ -41,8 +41,8 @@
// #define SPI_FLASH_SCK_PIN (&pin_PA05)
// #define SPI_FLASH_CS_PIN (&pin_PA04)
-#define CIRCUITPY_AUTORELOAD_DELAY_MS 500
+#define CIRCUITPY_AUTORELOAD_DELAY_MS (500)
#define BOARD_FLASH_SIZE (FLASH_SIZE - 0x2000 - 0xC000)
-#define AUTORESET_DELAY_MS 500
+#define AUTORESET_DELAY_MS (500)
diff --git a/ports/stm32f4/boards/stm32f411ve_discovery/mpconfigboard.h b/ports/stm32f4/boards/stm32f411ve_discovery/mpconfigboard.h
index 7a53354078..49ef80cdd7 100644
--- a/ports/stm32f4/boards/stm32f411ve_discovery/mpconfigboard.h
+++ b/ports/stm32f4/boards/stm32f411ve_discovery/mpconfigboard.h
@@ -32,4 +32,4 @@
#define FLASH_SIZE (0x80000) //512K
#define FLASH_PAGE_SIZE (0x4000) //16K
-#define BOARD_OSC_DIV 8
+#define BOARD_OSC_DIV (8)
diff --git a/ports/stm32f4/boards/stm32f412zg_discovery/mpconfigboard.h b/ports/stm32f4/boards/stm32f412zg_discovery/mpconfigboard.h
index b6d28cb127..f34b830fb2 100644
--- a/ports/stm32f4/boards/stm32f412zg_discovery/mpconfigboard.h
+++ b/ports/stm32f4/boards/stm32f412zg_discovery/mpconfigboard.h
@@ -32,7 +32,7 @@
#define FLASH_SIZE (0x100000)
#define FLASH_PAGE_SIZE (0x4000)
-#define BOARD_OSC_DIV 8
+#define BOARD_OSC_DIV (8)
#define DEFAULT_I2C_BUS_SCL (&pin_PB10)
#define DEFAULT_I2C_BUS_SDA (&pin_PB09)
diff --git a/ports/stm32f4/boards/stm32f4_discovery/mpconfigboard.h b/ports/stm32f4/boards/stm32f4_discovery/mpconfigboard.h
index c51fa2e044..fcd7aa09cd 100644
--- a/ports/stm32f4/boards/stm32f4_discovery/mpconfigboard.h
+++ b/ports/stm32f4/boards/stm32f4_discovery/mpconfigboard.h
@@ -32,4 +32,4 @@
#define FLASH_SIZE (0x100000)
#define FLASH_PAGE_SIZE (0x4000)
-#define BOARD_OSC_DIV 8
+#define BOARD_OSC_DIV (8)
diff --git a/ports/stm32f4/mpconfigport.h b/ports/stm32f4/mpconfigport.h
index 7737bda8d4..283984ea90 100644
--- a/ports/stm32f4/mpconfigport.h
+++ b/ports/stm32f4/mpconfigport.h
@@ -39,6 +39,17 @@
#include "py/circuitpy_mpconfig.h"
+//Board flags:
+#ifndef BOARD_OVERWRITE_SWD
+#define BOARD_OVERWRITE_SWD (0)
+#endif
+#ifndef BOARD_VTOR_DEFER
+#define BOARD_VTOR_DEFER (0)
+#endif
+#ifndef BOARD_NO_VBUS_SENSE
+#define BOARD_NO_VBUS_SENSE (0)
+#endif
+
#define MAX_UART 10 //how many UART are implemented
#define MICROPY_PORT_ROOT_POINTERS \
diff --git a/ports/stm32f4/peripherals/stm32f4/stm32f411xe/gpio.c b/ports/stm32f4/peripherals/stm32f4/stm32f411xe/gpio.c
index 651aea2691..aee0bd5eb8 100644
--- a/ports/stm32f4/peripherals/stm32f4/stm32f411xe/gpio.c
+++ b/ports/stm32f4/peripherals/stm32f4/stm32f411xe/gpio.c
@@ -26,6 +26,7 @@
#include "stm32f4xx_hal.h"
#include "stm32f4/gpio.h"
+#include "py/mpconfig.h"
#include "common-hal/microcontroller/Pin.h"
void stm32f4_peripherals_gpio_init(void) {
@@ -40,8 +41,11 @@ void stm32f4_peripherals_gpio_init(void) {
//Never reset pins
never_reset_pin_number(2,14); //PC14 OSC32_IN
never_reset_pin_number(2,15); //PC15 OSC32_OUT
+
+ #if !(BOARD_OVERWRITE_SWD)
never_reset_pin_number(0,13); //PA13 SWDIO
never_reset_pin_number(0,14); //PA14 SWCLK
+ #endif
// Port H is not included in GPIO port array
// never_reset_pin_number(5,0); //PH0 JTDO
diff --git a/ports/stm32f4/supervisor/usb.c b/ports/stm32f4/supervisor/usb.c
index afafe26a90..358c2de5b3 100644
--- a/ports/stm32f4/supervisor/usb.c
+++ b/ports/stm32f4/supervisor/usb.c
@@ -38,7 +38,7 @@
STATIC void init_usb_vbus_sense(void) {
-#ifdef BOARD_NO_VBUS_SENSE
+#if (BOARD_NO_VBUS_SENSE)
// Disable VBUS sensing
#ifdef USB_OTG_GCCFG_VBDEN
USB_OTG_FS->GCCFG &= ~USB_OTG_GCCFG_VBDEN;
diff --git a/ports/stm32f4/system_stm32f4xx.c b/ports/stm32f4/system_stm32f4xx.c
index bce420056d..caa4f9cafb 100644
--- a/ports/stm32f4/system_stm32f4xx.c
+++ b/ports/stm32f4/system_stm32f4xx.c
@@ -218,7 +218,7 @@ void SystemInit(void)
#endif /* DATA_IN_ExtSRAM || DATA_IN_ExtSDRAM */
/* Configure the Vector Table location add offset address ------------------*/
-#if !defined(BOARD_VTOR_DEFER) //only set VTOR if the bootloader hasn't already
+#if !(BOARD_VTOR_DEFER) //only set VTOR if the bootloader hasn't already
#ifdef VECT_TAB_SRAM
SCB->VTOR = SRAM_BASE | VECT_TAB_OFFSET; /* Vector Table Relocation in Internal SRAM */
#else