xref: /bsp/stm32/stm32f412-st-nucleo/

# STM32F412-Nucleo BSP Introduction

[中文](README_zh.md)

## MCU: STM32F412ZG @100MHz, 1024KB FLASH,  256KB RAM

STM32F412xE/G devices are based on the high-performance Arm® Cortex® -M4 32-bit RISC core operating at a frequency of up to 100 MHz. Their Cortex®-M4 core features a Floating point unit (FPU) single precision which supports 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) which enhances application security.

STM32F412xE/G devices belong to the STM32 Dynamic Efficiency™ product line (with products combining power efficiency, performance and integration) while adding a new innovative feature called Batch Acquisition Mode (BAM) allowing even more power consumption saving during data batching.
STM32F412xE/G devices incorporate high-speed embedded memories (up to 1 Mbyte of Flash memory, 256 Kbytes of SRAM), and an extensive range of enhanced I/Os and peripherals connected to two APB buses, three AHB buses and a 32-bit multi-AHB bus matrix.
All devices offer one 12-bit ADC, a low-power RTC, twelve general-purpose 16-bit timers, two PWM timers for motor control and two general-purpose 32-bit timers.
They also feature standard and advanced communication interfaces:
In addition, STM32F412xE/G devices embed advanced peripherals:
STM32F412xE/G devices are offered in 7 packages ranging from 48 to 144 pins. The set of available peripherals depends on the selected package.
The STM32F412xE/G operates in the -40 to +125 °C temperature range from a 1.7 (PDR OFF) to 3.6 V power supply. A comprehensive set of power-saving modes allows the design of low-power applications.
These features make the STM32F412xE/G microcontrollers suitable for a wide range of applications.

#### KEY FEATURES

- Dynamic Efficiency Line with BAM (Batch Acquisition Mode)
- 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 100 MHz, memory protection unit, 125 DMIPS/1.25 DMIPS/MHz (Dhrystone 2.1), and DSP instructions
- Memories
  - Up to 1 Mbyte of Flash memory
  - 256 Kbyte of SRAM
  - Flexible external static memory controller with up to 16-bit data bus: SRAM, PSRAM, NOR Flash memory
  - Dual mode Quad-SPI interface
- LCD parallel interface, 8080/6800 modes
- Clock, reset and supply management
  - 1.7 V to 3.6 V application supply and I/Os
  - POR, PDR, PVD and BOR
  - 4-to-26 MHz crystal oscillator
  - Internal 16 MHz factory-trimmed RC
  - 32 kHz oscillator for RTC with calibration
  - Internal 32 kHz RC with calibration
- Power consumption
  - Run: 112 μA/MHz (peripheral off)
  - Stop (Flash in Stop mode, fast wakeup time): 50 μA Typ @ 25 °C; 75 μA max @25 °C
  - Stop (Flash in Deep power down mode, slow wakeup time): down to 18 μA @ 25 °C; 40 μA max @25 °C
  - Standby: 2.4 μA @25 °C / 1.7 V without RTC; 12 μA @85 °C @1.7 V
  - VBAT supply for RTC: 1 μA @25 °C
- 1×12-bit, 2.4 MSPS ADC: up to 16 channels
- 2xdigital filters for sigma delta modulator, 4xPDM interfaces, stereo microphone support
- General-purpose DMA: 16-stream DMA

- Up to 17 timers: up to twelve 16-bit timers, two 32-bit timers up to 100 MHz each with up to four IC/OC/PWM or pulse counter and quadrature (incremental) encoder input, two watchdog timers (independent and window), one SysTick timer
- Debug mode
  - Serial wire debug (SWD) & JTAG
  - Cortex®-M4 Embedded Trace Macrocell™
- Up to 114 I/O ports with interrupt capability
  - Up to 109 fast I/Os up to 100 MHz
  - Up to 114 five V-tolerant I/Os
- Up to 17 communication interfaces
  - Up to 4xI2C interfaces (SMBus/PMBus)
  - Up to 4 USARTs (2x12.5 Mbit/s, 2x6.25 Mbit/s), ISO 7816 interface, LIN, IrDA, modem control)
  - Up to 5 SPI/I2Ss (up to 50 Mbit/s, SPI or I2S audio protocol), out of which 2 muxed full-duplex I2S interfaces
  - SDIO interface (SD/MMC/eMMC)
  - Advanced connectivity: USB 2.0 full-speed device/host/OTG controller with PHY
  - 2xCAN (2.0B Active)
- True random number generator
- CRC calculation unit
- 96-bit unique ID
- RTC: subsecond accuracy, hardware calendar
- All packages are ECOPACK®2



## Read more

|                          Documents                           |                         Description                          |
| :----------------------------------------------------------: | :----------------------------------------------------------: |
| [STM32_Nucleo-144_BSP_Introduction](../docs/STM32_Nucleo-144_BSP_Introduction.md) | How to run RT-Thread on STM32 Nucleo-144 boards (**Must-Read**) |
| [STM32F412ZG ST Official Website](https://www.st.com/en/microcontrollers-microprocessors/stm32f412zg.html#documentation) |          STM32F412ZG datasheet and other resources           |



## Maintained By

[flybreak](https://github.com/guozhanxin)  g1171407708@163.com



## Translated By

Meco Man @ RT-Thread Community

> jiantingman@foxmail.com
>
> https://github.com/mysterywolf

# NUCLEO-F412ZG 开发板 BSP 说明

## 简介

本文档为 RT-Thread 开发团队为 NUCLEO-F412ZG 开发板提供的 BSP (板级支持包) 说明。

主要内容如下：

- 开发板资源介绍
- BSP 快速上手
- 进阶使用方法

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。

## 开发板介绍

探索者 NUCLEO-F412ZG 是意法半导体推出的一款基于 ARM Cortex-M4 内核的开发板，最高主频为 100Mhz，该开发板具有丰富的板载资源，可以充分发挥 STM32F411ZG 的芯片性能。

开发板外观如下图所示：

![board](figures/board.png)

该开发板常用 **板载资源** 如下：

- MCU：STM32F412ZG，主频 100MHz，1024KB FLASH ，256KB RAM。
- 常用外设
  - LED：3 个，USB communication (LD1), user LED (LD2), power LED (LD3) 。
  - 按键，2 个，USER and RESET 。
- 常用接口：USB 支持 3 种不同接口：虚拟 COM 端口、大容量存储和调试端口。
- 调试接口，板载 ST-LINK/V2-1 调试器。

开发板更多详细信息请参考意法半导体 [NUCLEO-F412ZG 开发板介绍](https://www.st.com/en/evaluation-tools/nucleo-f412zg.html)。

## 外设支持

本 BSP 目前对外设的支持情况如下：

| **片上外设** | **支持情况** |               **备注**                |
| :------------ | :----------: | :-----------------------------------: |
| GPIO         |     支持     | PA0, PA1... PH1 ---> PIN: 0, 1...63 |
| UART         |     支持     |              UART2,UART3            |
| Onchip Flash |     支持     |                                     |
|  USB Device  |     支持     |                                     |

## 使用说明

使用说明分为如下两个章节：

- 快速上手

    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 。

- 进阶使用

    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。


### 快速上手

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。

**请注意！！！**

在执行编译工作前请先打开ENV执行以下指令（该指令用于拉取必要的HAL库及CMSIS库，否则无法通过编译）：

```bash
pkgs --update
```

#### 硬件连接

使用 Type-A to Micro-B 线连接开发板和 PC 供电，红色 LED LD3 (PWR) 和 LD1 (COM) 会点亮。

#### 编译下载

双击 project.uvprojx 文件，打开 MDK5 工程，编译并下载程序到开发板。

> 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。

#### 运行结果

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、蓝色 LD2 会周期性闪烁。

USB 虚拟 COM 端口默认连接串口 3，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:

```bash
 \ | /
- RT -     Thread Operating System
 / | \     4.0.2 build Oct 20 2019
 2006 - 2019 Copyright by rt-thread team
msh >
```
### 进阶使用

此 BSP 默认只开启了 GPIO 和 串口 3 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：

1. 在 BSP 下打开 env 工具。

2. 输入 `menuconfig` 命令配置工程，配置好之后保存退出。

3. 输入 `pkgs --update` 命令更新软件包。

4. 输入 `scons --target=mdk5/iar` 命令重新生成工程。

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)。

## 注意事项

暂无

## 联系人信息

维护人:

- [flybreak](https://github.com/guozhanxin) ，邮箱：<g1171407708@163.com>

Last Index update Fri Aug 22 02:45:11 CST 2025