1# The Arduino Compatible for STM32F469 Discovery Board 2 3**English** | [中文](README_zh.md) 4 5## 1 RTduino - Arduino Ecosystem Compatibility Layer for RT-Thread 6 7STM32F469 Discovery 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. 8 9### 1.1 How to Enable RTduino 10 11Please go to the [RTduino repository](https://github.com/RTduino/RTduino) to see the details. 12 13```Kconfig 14Hardware Drivers Config ---> 15 Onboard Peripheral Drivers ---> 16 [*] Compatible with Arduino Ecosystem (RTduino) 17``` 18 19## 2 Arduino Pinout 20 21 22 23This 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). 24 25| Arduino Pin | STM32 Pin | 5V Tolerate | Note | 26| --------------------- | --------- | ----------- | --------------------------------------------------------------------------------------------- | 27| 0 (D0) | PG9 | Yes | Serial-Rx. Token over by RT-Thread UART device by default | 28| 1 (D1) | PG14 | Yes | Serial-Tx. Token over by RT-Thread UART device by default | 29| 2 (D2) | PG13 | Yes | | 30| 3 (D3) | PA1 | Yes | PWM2-CH2. Token over by RT-Thread PWM device by default | 31| 4 (D4) | PG12 | Yes | | 32| 5 (D5) | PA2 | Yes | PWM2-CH3. Token over by RT-Thread PWM device by default | 33| 6 (D6) | PA6 | Yes | PWM3-CH1. Token over by RT-Thread PWM device by default | 34| 7 (D7) | PG11 | Yes | | 35| 8 (D8) | PG10 | Yes | | 36| 9 (D9) | PA7 | Yes | PWM3-CH2. Token over by RT-Thread PWM device by default | 37| 10 (D10) | PH6 | Yes | PWM12-CH1. Token over by RT-Thread PWM device by default | 38| 11 (D11) | PB15 | Yes | PWM12-CH2. Token over by RT-Thread PWM device by default | 39| 12 (D12) | PB14 | Yes | | 40| 13 (D13, LED_BUILTIN) | PD3 | Yes | USER LED1 | 41| 14 (D14) | PB9 | Yes | I2C-SDA. Token over by RT-Thread I2C device by default | 42| 15 (D15) | PB8 | Yes | I2C-SCL. Token over by RT-Thread I2C device by default | 43| 16 (D16) | PA0 | Yes | USER Button | 44| 17（D17） | PG6 | Yes | USER LED2 | 45| 18（D18） | PD4 | Yes | USER LED3 | 46| 19（D19） | PD5 | Yes | USER LED4 | 47| 20（D20） | PK3 | Yes | USER LED5 | 48| A0 | PB1 | Yes | ADC1-CH9. Token over by RT-Thread ADC device by default | 49| A1 | PC2 | Yes | ADC1-CH12. Token over by RT-Thread ADC device by default | 50| A2 | PC3 | Yes | ADC1-CH13. Token over by RT-Thread ADC device by default | 51| A3 | PC4 | Yes | ADC1-CH14. Token over by RT-Thread ADC device by default | 52| A4 | PC5 | Yes | ADC1-CH15. Token over by RT-Thread ADC device by default | 53| A5 | PA4 | Yes | ADC1-CH4. Token over by RT-Thread ADC device by default | 54| A6 | -- | | On-chip internal voltage sensor. ADC1-CH17. Token over by RT-Thread ADC device by default | 55| A7 | -- | | On-chip internal temperature sensor. ADC1-CH16. Token over by RT-Thread ADC device by default | 56 57> Notice: 58> 59> 1. Don't use a same hardware timer to drive PWM (analogRead) and servos at same time, because hardware timers can only generate a same frequency for 4 PWM channels. Otherwise, it could cause a failure when drive servos. 60 61> References 62> 63> 1. [STM32F469 Discovery ST Website](https://www.st.com/en/evaluation-tools/32f469idiscovery.html#documentation) 64 65## 3 Communication 66 67### 3.1 I2C Bus 68 69I2C 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. 70 71### 3.2 SPI Bus 72 73This board doesn't support Arduino SPI header file and functions. 74 75### 3.3 Serial 76 77This board supports to use `Serial.` method to operate `uart3` device. See [example](https://github.com/RTduino/RTduino/blob/master/examples/Basic/helloworld.cpp). 78 79### 3.4 USB Virtual Serial 80 81This board supports USB virtual serial. See [example](https://github.com/RTduino/RTduino/tree/master/examples/USBSerial). You may enable it if is needed. 82 83```Kconfig 84RT-Thread online packages ---> 85 Arduino libraries ---> 86 [*] RTduino: Arduino Ecological Compatibility Layer 87 [*] Enable USB Serial 88``` 89
