GPIO Usage & Used Pins

Usage

typedef <GPIOA, 9> somePin; //Define pin PA9 as somePin

After that you can

//Read from that pin
somePin::mode(Mode::INPUT); 
int value = somePin::value();

//Set the pin's value
somePin::mode(Mode::OUTPUT);
somePin::high();
somePin::low();

All the possible pin modes and speeds can be found in the gpio_impl.h inside libs/miosix-kernel/miosix/arch/<your_arch>/common/interfaces-impl.

Discovery Boards

These are some commonly used pins that you'll need when writing software for discovery boards.

• STM32F429ZI_DISCO (with screen)

  stm32f429zi
  Red Led	PG13
  Green Led	PG14
  User Button	PA0

You can find a complete pin usage description here.

• STM32F407VG_DISCO (no screen)

  stm32f407vg
  Red Led
  Green Led
  User Button	PA0

Take a look at the f407 datasheet for more.

Miosix Pin Definition

Where are the stm32 pins which are used in miosix? (all paths are referred to /libs/miosix-kernel/miosix ).

• SD memory: arch/common/drivers/sd_stm32f2_f4.cpp

  D0	D1	D2	D3	CLK	CMD
  PC8	PC9	PC10	PC11	PC12	PD2

• Serial Ports: arch/common/drivers/serial_stm32.cpp

  USART	TX	RX	CTS	RTS
  1	PA9	PA0	PA11	PA12
  2	PA2	PA3	PA0	PA1
  3	PB10	PB11	PB13	PB14

• Servo: arch/common/drivers/servo_stm32.cpp

  SERVO1	SERVO2	SERVO3	SERVO4
  PB6	PB7	PB8	PB9