GPIO

This module provides a low-level interface to the Leaderboard’s GPIO ports, intended for switches and some lights. The code is fairly straightforward, and only slightly simplifies the Minions Driver.

group BSP_GPIO

Enums

enum port_t

Values:

enumerator PORTA

enumerator PORTB

enumerator PORTC

enumerator PORTD

enumerator NUM_PORTS

enum direction_t

Values:

enumerator INPUT

enumerator OUTPUT

Functions

GPIO_TypeDef *GPIO_GetPort(port_t port)

void BSP_GPIO_Init(port_t port, uint16_t mask, direction_t direction, bool pull_down)

Initializes a GPIO port.

Parameters:

• port – - port to initialize

• mask – - pins

• direction – - input or output

Returns:

None

uint16_t BSP_GPIO_Read(port_t port)

Reads value of the specified port.

Parameters:

port – to read

Returns:

data of the port

void BSP_GPIO_Write(port_t port, uint16_t data)

Writes data to a specified port.

Parameters:

• port – port to write to

• data – data to write

Returns:

None

uint8_t BSP_GPIO_Read_Pin(port_t port, uint16_t pinmask)

Reads data from a specified pin (not applicalbe to output pins)

Reads data from a specified pin (not applicalbe to output pins)

Parameters:

• port – The port to read from

• pinmask – Mask from stm header file that says which pin to read from

• port – The port to read from

• pin – The pin to read from

Returns:

State of the pin

Returns:

State of the pin

void BSP_GPIO_Write_Pin(port_t port, uint16_t pinmask, bool state)

Writes data to a specified pin.

Parameters:

• port – The port to write to

• pinmask – Mask from stm header file that says which pin to write too

• state – true=ON or false=OFF

• port – The port to write to

• pin – The pin to write to

• state – true=ON or false=OFF

Returns:

None

Returns:

None

uint8_t BSP_GPIO_Get_State(port_t port, uint16_t pin)

Returns state of output pin (not applicable to input pins)

Parameters:

• port – The port to get state from

• pin – The pin to get state from

Returns:

1 if pin is high, 0 if low