GPIO

GPIO driver interface. More...

Functions
void	gpio_output_init (const OutputConfig *pin_config, GPIOOType_TypeDef otype)
	Initialize a pin as an output.
void	gpio_output_set (const OutputConfig *pin_config, bool asserted)
	Assert or deassert an output.
void	gpio_input_init (const InputConfig *input_cfg)
	Initialize a pin as an input without pull resistor.
void	gpio_input_init_pull_up_down (const InputConfig *input_cfg, GPIOPuPd_TypeDef pupd)
	Initialize a pin as an input with a pull resistor.
bool	gpio_input_read (const InputConfig *input_cfg)
	Read an input.

Detailed Description

GPIO driver interface.

Pins are described by the board's OutputConfig and InputConfig.

gpio_output_init(&dev->reset_gpio, GPIO_OType_PP);
gpio_output_set(&dev->reset_gpio, false);
 
gpio_input_init_pull_up_down(&dev->int_input, GPIO_PuPd_UP);
bool level = gpio_input_read(&dev->int_input);

Function Documentation

gpio_input_init()

void gpio_input_init

(

const InputConfig *

input_cfg

)

Initialize a pin as an input without pull resistor.

Parameters

input_cfg

Pin configuration.

gpio_input_init_pull_up_down()

void gpio_input_init_pull_up_down	(	const InputConfig *	input_cfg,
		GPIOPuPd_TypeDef	pupd
	)

Initialize a pin as an input with a pull resistor.

Parameters

input_cfg	Pin configuration.
pupd	Pull resistor.

gpio_input_read()

bool gpio_input_read

(

const InputConfig *

input_cfg

)

Read an input.

Parameters

input_cfg

Pin configuration.

Returns

Pin level, true if high.

gpio_output_init()

void gpio_output_init	(	const OutputConfig *	pin_config,
		GPIOOType_TypeDef	otype
	)

Initialize a pin as an output.

Parameters

pin_config	Pin configuration.
otype	Output type, GPIO_OType_PP or GPIO_OType_OD.

gpio_output_set()

void gpio_output_set	(	const OutputConfig *	pin_config,
		bool	asserted
	)

Assert or deassert an output.

Asserting drives the pin high if active_high is set in pin_config, low otherwise.

Parameters

pin_config	Pin configuration.
asserted	True to assert.