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-# NUCLEO-F446ZE 开发板 BSP 说明
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-
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-## 简介
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-
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-本文档为 NUCLEO-F446ZE 开发板的 BSP (板级支持包) 说明。
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-
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-主要内容如下：
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-
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-- 开发板资源介绍
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-- BSP 快速上手
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-- 进阶使用方法
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-
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-通过阅读快速上手章节开发者可以快速地上手该 BSP，将 RT-Thread 运行在开发板上。在进阶使用指南章节，将会介绍更多高级功能，帮助开发者利用 RT-Thread 驱动更多板载资源。
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-
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-## 开发板介绍
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-
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-NUCLEO-F446ZE 是 ST 公司推出的一款针对 STM32F4 系列设计的 Cortex-M4 Nucleo-144 开发板，支持 mbed，兼容 Arduino、还带有ST Zio和 ST Morpho 扩展接口，可连接微控制器的所有周边外设。
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-
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-开发板外观如下图所示：
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-
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-该开发板常用 **板载资源** 如下：
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-
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-- MCU：STM32f446ZE，主频 180MHz，512KB FLASH ，128KB RAM
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-- 常用外设
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- - LED：3个，LED1 (绿色，PB0),LED2（蓝色，PB7），LED3（红色，PB14）
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-- 常用接口：USB 转串口
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-- 调试接口，标准 ST-LINK/SWD
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-
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-开发板更多详细信息请参考【NUCLEO-F446ZE】 [开发板介绍](https://www.st.com/zh/evaluation-tools/nucleo-f446ze.html)。
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-
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-## 外设支持
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-
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-本 BSP 目前对外设的支持情况如下：
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-
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-| **板载外设** | **支持情况** | **备注** |
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-| :----------------- | :----------: | :------------------------------------- |
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-| USB 转串口 | 支持 | |
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-| **片上外设** | **支持情况** | **备注** |
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-| GPIO | 支持 | |
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-| UART | 支持 | UART1 |
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-
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-## 使用说明
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-
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-使用说明分为如下两个章节：
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-
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-- 快速上手
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-
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- 本章节是为刚接触 RT-Thread 的新手准备的使用说明，遵循简单的步骤即可将 RT-Thread 操作系统运行在该开发板上，看到实验效果 。
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-
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-- 进阶使用
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-
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- 本章节是为需要在 RT-Thread 操作系统上使用更多开发板资源的开发者准备的。通过使用 ENV 工具对 BSP 进行配置，可以开启更多板载资源，实现更多高级功能。
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-
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-
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-### 快速上手
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-
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-本 BSP 为开发者提供 MDK5 和 IAR 工程，并且支持 GCC 开发环境。下面以 MDK5 开发环境为例，介绍如何将系统运行起来。
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-
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-#### 硬件连接
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-
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-使用数据线连接开发板到 PC，通过数据线对开发板供电,下载,调试。
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-
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-#### 编译下载
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-
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-双击 project.uvprojx 文件，打开 MDK5 工程，编译并下载程序到开发板。
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-
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-> 工程默认配置使用 ST-LINK 仿真器下载程序，在通过 ST-LINK 连接开发板的基础上，点击下载按钮即可下载程序到开发板
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-
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-#### 运行结果
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-
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-下载程序成功之后，系统会自动运行，蓝色的 LED2 以 500MS 周期闪烁。
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-
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-连接开发板对应串口到 PC , 在终端工具里打开相应的串口（115200-8-1-N），复位设备后，可以看到 RT-Thread 的输出信息:
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-
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-```bash
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- \ | /
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-- RT - Thread Operating System
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- / | \ 4.0.0 build Jan 7 2019
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- 2006 - 2018 Copyright by rt-thread team
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-msh >
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-```
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-### 进阶使用
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-
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-此 BSP 默认只开启了 GPIO 和 串口1 的功能，如果需使用 SD 卡、Flash 等更多高级功能，需要利用 ENV 工具对BSP 进行配置，步骤如下：
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-
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-1. 在 bsp 下打开 env 工具。
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-
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-2. 输入`menuconfig`命令配置工程，配置好之后保存退出。
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-
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-3. 输入`pkgs --update`命令更新软件包。
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-
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-4. 输入`scons --target=mdk4/mdk5/iar` 命令重新生成工程。
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-
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-本章节更多详细的介绍请参考 [STM32 系列 BSP 外设驱动使用教程](../docs/STM32系列BSP外设驱动使用教程.md)。
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-
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-## 注意事项
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-
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-- 默认终端输出设备是 UART1
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-
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-## 联系人信息
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-
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-维护人:
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-
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-- 邮箱：<qihengchuan8888@163.com>
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+# STM32F446-Nucleo BSP Introduction
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+
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+[中文](README_zh.md)
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+
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+## MCU: STM32F446ZE @180MHz, 512KB FLASH, 128KB RAM
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+
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+The STM32F446xC/E devices are based on the high-performance Arm® Cortex®-M4 32-bit RISC core operating at a frequency of up to 180 MHz. The Cortex-M4 core features a floating point unit (FPU) single precision supporting all Arm® single-precision data-processing instructions and data types. It also implements a full set of DSP instructions and a memory protection unit (MPU) that enhances application security.
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+
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+The STM32F446xC/E devices incorporate high-speed embedded memories (Flash memory up to 512 Kbytes, up to 128 Kbytes of SRAM), up to 4 Kbytes of backup SRAM, and an extensive range of enhanced I/Os and peripherals connected to two APB buses, two AHB buses and a 32-bit multi-AHB bus matrix.
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+All devices offer three 12-bit ADCs, two DACs, a low-power RTC, twelve general-purpose 16-bit timers including two PWM timers for motor control, two general-purpose 32-bit timers.
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+They also feature standard and advanced communication interfaces.
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+
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+#### KEY FEATURES
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+
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+- Core: Arm® 32-bit Cortex®-M4 CPU with FPU, Adaptive real-time accelerator (ART Accelerator) allowing 0-wait state execution from Flash memory, frequency up to 180 MHz, MPU, 225 DMIPS/1.25 DMIPS/MHz (Dhrystone 2.1), and DSP instructions
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+- Memories
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+ - 512 Kbytes of Flash memory
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+ - 128 Kbytes of SRAM
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+ - Flexible external memory controller with up to 16-bit data bus: SRAM, PSRAM, SDRAM/LPSDR SDRAM, NOR/NAND Flash memories
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+ - Dual mode QuadSPI interface
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+- LCD parallel interface, 8080/6800 modes
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+- Clock, reset and supply management
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+ - 1.7 V to 3.6 V application supply and I/Os
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+ - POR, PDR, PVD and BOR
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+ - 4 to 26 MHz crystal oscillator
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+ - Internal 16 MHz factory-trimmed RC (1% accuracy)
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+ - 32 kHz oscillator for RTC with calibration
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+ - Internal 32 kHz RC with calibration
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+- Low power
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+ - Sleep, Stop and Standby modes
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+ - VBAT supply for RTC, 20×32 bit backup registers plus optional 4 KB backup SRAM
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+- 3× 12-bit, 2.4 MSPS ADC: up to 24 channels and 7.2 MSPS in triple interleaved mode
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+- 2× 12-bit D/A converters
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+- General-purpose DMA: 16-stream DMA controller with FIFOs and burst support
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+- Up to 17 timers: 2x watchdog, 1x SysTick timer and up to twelve 16-bit and two 32-bit timers up to 180 MHz, each with up to four IC/OC/PWM or pulse counter
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+
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+- Debug mode
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+ - SWD and JTAG interfaces
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+ - Cortex®-M4 Trace Macrocell™
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+- Up to 114 I/O ports with interrupt capability
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+ - Up to 111 fast I/Os up to 90 MHz
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+ - Up to 112 5 V-tolerant I/Os
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+- Up to 20 communication interfaces
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+ - SPDIF-Rx
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+ - Up to 4× I2C interfaces (SMBus/PMBus)
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+ - Up to four USARTs and two UARTs (11.25 Mbit/s, ISO7816 interface, LIN, IrDA, modem control)
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+ - Up to four SPIs (45 Mbits/s), three with muxed I2S for audio class accuracy via internal audio PLL or external clock
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+ - 2x SAI (serial audio interface)
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+ - 2× CAN (2.0B Active)
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+ - SDIO interface
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+ - Consumer electronics control (CEC) I/F
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+- Advanced connectivity
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+ - USB 2.0 full-speed device/host/OTG controller with on-chip PHY
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+ - USB 2.0 high-speed/full-speed device/host/OTG controller with dedicated DMA, on-chip full-speed PHY and ULPI
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+ - Dedicated USB power rail enabling on-chip PHYs operation throughout the entire MCU power supply range
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+- 8- to 14-bit parallel camera interface up to 54 Mbytes/s
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+- CRC calculation unit
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+- RTC: subsecond accuracy, hardware calendar
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+- 96-bit unique ID
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+
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+
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+
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+## Read more
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+
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+| Documents | Description |
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+| :----------------------------------------------------------: | :----------------------------------------------------------: |
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+| [STM32_Nucleo-144_BSP_Introduction](../docs/STM32_Nucleo-144_BSP_Introduction.md) | How to run RT-Thread on STM32 Nucleo-144 boards (**Must-Read**) |
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+| [STM32F446ZE ST Official Website](https://www.st.com/content/st_com/en/products/microcontrollers-microprocessors/stm32-32-bit-arm-cortex-mcus/stm32-high-performance-mcus/stm32f4-series/stm32f446/stm32f446ze.html#documentation) | STM32F446ZE datasheet and other resources |
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+
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+
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+
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+## Maintained By
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+
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+qihengchuan8888@163.com
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+
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+
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+
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+## Translated By
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+
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+Meco Man @ RT-Thread Community
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+
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+> jiantingman@foxmail.com
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+>
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+> https://github.com/mysterywolf
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mysterywolf