77 lines
6.0 KiB
Markdown
77 lines
6.0 KiB
Markdown
# The Arduino Compatible for STM32F412 Nucleo Board
|
|
|
|
**English** | [中文](README_zh.md)
|
|
|
|
## 1 RTduino - Arduino Ecosystem Compatibility Layer for RT-Thread
|
|
|
|
STM32F412 Nucleo board has support [RTduino](https://github.com/RTduino/RTduino). Users can use Arduino APIs, third party libraries and programming method to program on the board.
|
|
|
|
### 1.1 How to Enable RTduino
|
|
|
|
Please go to the [RTduino repository](https://github.com/RTduino/RTduino) to see the details.
|
|
|
|
```Kconfig
|
|
Hardware Drivers Config --->
|
|
Onboard Peripheral Drivers --->
|
|
[*] Compatible with Arduino Ecosystem (RTduino)
|
|
```
|
|
|
|
## 2 Arduino Pinout
|
|
|
|
|
|
|
|
This board complies with Arduino UNO pins layout. For more details, please take a look at: [pins_arduino.c](pins_arduino.c) and [pins_arduino.h](pins_arduino.h).
|
|
|
|
| Arduino Pin | STM32 Pin | 5V Tolerate | Note |
|
|
| --------------------- | --------- | ----------- | --------------------------------------------------------------------------------------------- |
|
|
| 0 (D0) | PG9 | Yes | Serial-Rx. Token over by RT-Thread UART device by default |
|
|
| 1 (D1) | PG14 | Yes | Serial-Tx. Token over by RT-Thread UART device by default |
|
|
| 2 (D2) | PF15 | Yes | |
|
|
| 3 (D3) | PE13 | Yes | PWM1-CH3. Token over by RT-Thread PWM device by default |
|
|
| 4 (D4) | PF14 | Yes | |
|
|
| 5 (D5) | PE11 | Yes | PWM1-CH2. Token over by RT-Thread PWM device by default |
|
|
| 6 (D6) | PE9 | Yes | PWM1-CH1. Token over by RT-Thread PWM device by default |
|
|
| 7 (D7) | PF13 | Yes | |
|
|
| 8 (D8) | PF12 | Yes | |
|
|
| 9 (D9) | PD15 | Yes | PWM4-CH4. Token over by RT-Thread PWM device by default |
|
|
| 10 (D10) | PD14 | Yes | PWM4-CH3. Token over by RT-Thread PWM device by default |
|
|
| 11 (D11) | PA7 | Yes | PWM14-CH1. Token over by RT-Thread PWM device by default |
|
|
| 12 (D12) | PA6 | Yes | |
|
|
| 13 (D13) | PA5 | Yes | |
|
|
| 14 (D14) | PB9 | Yes | I2C-SDA. Token over by RT-Thread I2C device by default |
|
|
| 15 (D15) | PB8 | Yes | I2C-SCL. Token over by RT-Thread I2C device by default |
|
|
| 16 (D16) | PC13 | Yes | USER Button |
|
|
| 17 (D17, LED_BUILTIN) | PB0 | Yes | USER LED1 |
|
|
| 18 (D18) | PB7 | Yes | USER LED2 |
|
|
| 19 (D19) | PB14 | Yes | USER LED3 |
|
|
| A0 | PA3 | Yes | ADC1-CH3. Token over by RT-Thread ADC device by default |
|
|
| A1 | PC0 | Yes | ADC1-CH10. Token over by RT-Thread ADC device by default |
|
|
| A2 | PC3 | Yes | ADC1-CH13. Token over by RT-Thread ADC device by default |
|
|
| A3 | PC1 | Yes | ADC1-CH11. Token over by RT-Thread ADC device by default |
|
|
| A4 | PC4 | Yes | ADC1-CH14. Token over by RT-Thread ADC device by default |
|
|
| A5 | PC5 | Yes | ADC1-CH15. Token over by RT-Thread ADC device by default |
|
|
| A6 | -- | | On-chip internal voltage sensor. ADC1-CH17. Token over by RT-Thread ADC device by default |
|
|
| A7 | -- | | On-chip internal temperature sensor. ADC1-CH16. Token over by RT-Thread ADC device by default |
|
|
|
|
> Notice:
|
|
>
|
|
> 1. Don't use a same hardware timer to drive PWM (analogRead) and servos at same time, because hardware timer can only generate a same frequency for 4 PWM channels. Otherwise, it could cause a failure when drive servos.
|
|
|
|
> References
|
|
>
|
|
> 1. [STM32 Nucleo-144 user manual](https://www.st.com/resource/en/user_manual/um1974-stm32-nucleo144-boards-mb1137-stmicroelectronics.pdf)
|
|
|
|
## 3 Communication
|
|
|
|
### 3.1 I2C Bus
|
|
|
|
I2C bus is `SCL/D15` and `SDA/D14` pins. Users can directly include the `#include <Wire.h>`, which is the Arduino official I2C header file, to use the I2C bus.
|
|
|
|
### 3.2 SPI Bus
|
|
|
|
This board doesn't support Arduino SPI header file and functions.
|
|
|
|
### 3.3 Serial
|
|
|
|
This board supports to use `Serial.` method to operate `uart3` device. See [example](https://github.com/RTduino/RTduino/blob/master/examples/Basic/helloworld.cpp).
|