NUCLEO F308R8 Peripherals - martinriis/USEV-Microcontrollers-Workshop GitHub Wiki

The STM32F302R8 has three I²C (Inter-Integrated Circuit) peripherals, all of which are broken out to the headers on the NUCLEO development board.

This example sends the text 'Hello World!' to I²C device 0x71 every second via I2C1 on pins PB7 and PB6.

#include <Wire.h>
//            SDA  SCL
TwoWire Wire1(PB7, PB6);

void setup() {
  Wire2.begin(); 
}

void loop() {
  Wire2.beginTransmission(0x71);
  Wire2.write('Hello World!');
  Wire2.endTransmission();
  delay(1000);
}

The STM32F302R8 has three USART (Universal Synchronous/Asynchronous Receiver Transmitter) peripherals, all of which are broken out to the headers on the NUCLEO development board.

On the NUCLEO-F302R8 development board, the USB/UART converter is connected to Serial2 on pins PA2 and PA3.

The STM32F302R8 has two SPI (Serial Peripheral Interface) peripherals, all of which are broken out to the headers on the NUCLEO development board.