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-# NUCLEO-F072RB 开发板 BSP 说明
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+# STM32F072-Nucleo BSP Introduction
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-## 简介
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+[中文](README_zh.md)
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-本文档为刘恒为 NUCLEO-F072RB 开发板提供的 BSP (板级支持包) 说明。
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+## MCU: STM32F072RB @48MHz, 128KB FLASH, 16KB RAM
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-主要内容如下：
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+The STM32F072x8/xB microcontrollers incorporate the high-performance ARM®Cortex®-M0 32-bit RISC core operating at up to 48 MHz frequency, high-speed embedded memories (up to 128 Kbytes of Flash memory and 16 Kbytes of SRAM), and an extensive range of enhanced peripherals and I/Os. All devices offer standard communication interfaces (two I2Cs, two SPI/I2S, one HDMI CEC and four USARTs), one USB Full-speed device (crystal-less), one CAN, one 12-bit ADC, one 12-bit DAC with two channels, seven 16-bit timers, one 32-bit timer and an advanced-control PWM timer.
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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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+The STM32F072x8/xB microcontrollers operate in the -40 to +85 °C and -40 to +105 °C temperature ranges, from a 2.0 to 3.6 V power supply. A comprehensive set of power-saving modes allows the design of low-power applications.
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+The STM32F072x8/xB microcontrollers include devices in seven different packages ranging from 48 pins to 100 pins with a die form also available upon request. Depending on the device chosen, different sets of peripherals are included.
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+These features make the STM32F072x8/xB microcontrollers suitable for a wide range of applications such as application control and user interfaces, hand-held equipment, A/V receivers and digital TV, PC peripherals, gaming and GPS platforms, industrial applications, PLCs, inverters, printers, scanners, alarm systems, video intercoms and HVACs.
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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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+#### KEY FEATURES
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-## 开发板介绍
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+- Core: ARM®32-bit Cortex®-M0 CPU, frequency up to 48 MHz
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-NUCLEO-F072RB 是 ST 官方推出的开发板，搭载 STM32F072RBT6 芯片，基于 ARM Cortex-M0 内核，最高主频 48 MHz，具有丰富的板载资源，可以充分发挥 STM32F072RBT6 的芯片性能。
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+- Memories
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-开发板外观如下图所示：
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+- - 64 to 128 Kbytes of Flash memory
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+ - 16 Kbytes of SRAM with HW parity
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-
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+- CRC calculation unit
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-NUCLEO-F072RB 开发板常用 **板载资源** 如下：
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+- Reset and power management
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-- MCU：STM32F072RBT6，主频 48MHz，128KB FLASH ，16KB RAM
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-- 常用外设
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- - LED：3 个，USB communication (LD1), user LED (LD2), power LED (LD3) 。
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- - 按键：2 个，USER and RESET 。
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-- 常用接口：USB 转串口、Arduino Uno 和 ST morpho 两类扩展接口
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-- 调试接口：板载 ST-LINK/V2-1 调试器。
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+- - Digital and I/O supply: VDD= 2.0 V to 3.6 V
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+ - Analog supply: VDDA= VDDto 3.6 V
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+ - Selected I/Os: VDDIO2= 1.65 V to 3.6 V
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+ - Power-on/Power down reset (POR/PDR)
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+ - Programmable voltage detector (PVD)
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+ - Low power modes: Sleep, Stop, Standby
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+ - VBATsupply for RTC and backup registers
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-开发板更多详细信息请参考意法半导体[NUCLEO-F072RB](https://www.st.com/content/st_com/en/products/evaluation-tools/product-evaluation-tools/mcu-mpu-eval-tools/stm32-mcu-mpu-eval-tools/stm32-nucleo-boards/nucleo-f072rb.html)
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+- Clock management
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-## 外设支持
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+- - 4 to 32 MHz crystal oscillator
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+ - 32 kHz oscillator for RTC with calibration
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+ - Internal 8 MHz RC with x6 PLL option
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+ - Internal 40 kHz RC oscillator
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+ - Internal 48 MHz oscillator with automatic trimming based on ext. synchronization
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-本 BSP 目前对外设的支持情况如下：
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+- Up to 87 fast I/Os
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-| **片上外设** | **支持情况** | **备注** |
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-| :------------ | :----------: | :-----------------------------------: |
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-| GPIO | 支持 | PA0, PA1... PH1 ---> PIN: 0, 1...63 |
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-| UART | 支持 | UART2 |
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-| LED | 支持 | LED2 |
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+- - All mappable on external interrupt vectors
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+ - Up to 68 I/Os with 5V tolerant capability and 19 with independent supply VDDIO2
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-## 使用说明
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+- Seven-channel DMA controller
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-使用说明分为如下两个章节：
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+- One 12-bit, 1.0 μs ADC (up to 16 channels)
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-- 快速上手
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+- - Conversion range: 0 to 3.6 V
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+ - Separate analog supply: 2.4 V to 3.6 V
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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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+- One 12-bit D/A converter (with 2 channels)
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-- 进阶使用
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+- Two fast low-power analog comparators with programmable input and output
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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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+- Up to 24 capacitive sensing channels for touchkey, linear and rotary touch sensors
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+- Calendar RTC with alarm and periodic wakeup from Stop/Standby
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-### 快速上手
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+- 12 timers
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-本 BSP 为开发者提供 MDK4、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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+- - One 16-bit advanced-control timer for six-channel PWM output
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+ - One 32-bit and seven 16-bit timers, with up to four IC/OC, OCN, usable for IR control decoding or DAC control
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+ - Independent and system watchdog timers
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+ - SysTick timer
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-#### 硬件连接
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+- Communication interfaces
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-使用 Type-A to Mini-B 线连接开发板和 PC 供电，红色 LED LD3 (PWR) 和 LD1 (COM) 会点亮。
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+- - Two I2C interfaces supporting Fast Mode Plus (1 Mbit/s) with 20 mA current sink, one supporting SMBus/PMBus and wakeup
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+ - Four USARTs supporting master synchronous SPI and modem control, two with ISO7816 interface, LIN, IrDA, auto baud rate detection and wakeup feature
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+ - Two SPIs (18 Mbit/s) with 4 to 16 programmable bit frames, and with I2S interface multiplexed
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+ - CAN interface
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+ - USB 2.0 full-speed interface, able to run from internal 48 MHz oscillator and with BCD and LPM support
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-#### 编译下载
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+- HDMI CEC wakeup on header reception
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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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+- Serial wire debug (SWD)
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-> 工程默认配置使用 ST-LINK 下载程序，点击下载按钮即可下载程序到开发板。
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+- 96-bit unique ID
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-#### 运行结果
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+- All packages ECOPACK®2
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-下载程序成功之后，系统会自动运行，观察开发板上 LED 的运行效果，红色 LD3 和 LD1 常亮、绿色 LD2 会周期性闪烁。
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-USB 虚拟 COM 端口默认连接串口 2，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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- \ | /
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-- RT - Thread Operating System
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- / | \ 4.0.2 build May 30 2019
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- 2006 - 2019 Copyright by rt-thread team
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-msh >
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-```
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+## Read more
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-### 进阶使用
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+| Documents | Description |
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+| :----------------------------------------------------------: | :----------------------------------------------------------: |
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+| [STM32_Nucleo-64_BSP_Introduction](../docs/STM32_Nucleo-64_BSP_Introduction.md) | How to run RT-Thread on STM32 Nucleo-64 boards (**Must-Read**) |
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+| [STM32F072RB ST Official Website](https://www.st.com/content/st_com/en/products/microcontrollers-microprocessors/stm32-32-bit-arm-cortex-mcus/stm32-mainstream-mcus/stm32f0-series/stm32f0x2/stm32f072rb.html#documentation) | STM32F072RB datasheet and other resources |
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-此 BSP 默认只开启了 GPIO 和 串口 2 的功能，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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-1. 在 bsp 下打开 env 工具。
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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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+## Maintained By
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-3. 输入`pkgs --update`命令更新软件包。
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+[刘恒](https://github.com/lhxzui)
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-4. 输入`scons --target=mdk4/mdk5/iar` 命令重新生成工程。
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+iuzxhl@qq.com
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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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-## 注意事项
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-## 联系人信息
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+## Translated By
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-维护人:
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+Meco Man @ RT-Thread Community
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-- [刘恒](https://github.com/lhxzui), 邮箱：<iuzxhl@qq.com>
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+> jiantingman@foxmail.com
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+>
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+> https://github.com/mysterywolf
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mysterywolf