Functions for using General Purpose Input/Output (GPIO) peripheral. More...

Modules
Types
Hardware GPIO data types.

Functions
gos_result_t	gos_gpio_init ( gos_gpio_t gpio, gos_gpio_config_t direction, bool init_val)
	Initialize GPIO as input or output. More...

gos_result_t	gos_gpio_direct_init ( gos_gpio_t gpio, gos_gpio_config_t direction)
	Initialize GPIO as input or output. More...

gos_result_t	gos_gpio_deinit ( gos_gpio_t gpio)
	De-initialize a GPIO. This is the equivalent of using the Command API function `gpio_dir` with argument `none` More...

gos_result_t	gos_gpio_set ( gos_gpio_t gpio, bool value)
	Set value of output GPIO (HIGH or LOW) More...

gos_result_t	gos_gpio_direct_set ( gos_gpio_t gpio, bool value)
	Set value of output GPIO (HIGH or LOW) More...

bool	gos_gpio_get ( gos_gpio_t gpio)
	Get value of GPIO. More...

gos_result_t	gos_gpio_irq_enable ( gos_gpio_t gpio, gos_gpio_irq_trigger_t edge, gos_handler_t callback, void *arg)
	Execute the given callback when the specified edge event is detected on the GPIO. More...

gos_result_t	gos_gpio_irq_disable ( gos_gpio_t gpio)
	Disables an interrupt trigger for an input GPIO pin. More...

gos_result_t	gos_gpio_mask_set (uint32_t gpio_mask)
	Set output GPIOs HIGH. More...

gos_result_t	gos_gpio_mask_clear (uint32_t gpio_mask)
	Set output GPIOs LOW. More...

uint32_t	gos_gpio_mask_get (uint32_t gpio_mask)
	Return value of GPIOs. More...

Detailed Description

Functions for using General Purpose Input/Output (GPIO) peripheral.

Function Documentation

◆ gos_gpio_deinit()

gos_result_t gos_gpio_deinit ( gos_gpio_t gpio )

De-initialize a GPIO. This is the equivalent of using the Command API function gpio_dir with argument none

See Gecko OS Command API documentation: gpio_dir .

Note: The GPIO must be initialized with gos_gpio_init() first.

◆ gos_gpio_direct_init()

gos_result_t gos_gpio_direct_init	(	gos_gpio_t	`gpio,`
		gos_gpio_config_t	`direction`
	)

Initialize GPIO as input or output.

Note: This only initializes the GPIO at the hardware level. Use gos_gpio_init() for Gecko OS to be aware of this GPIO.

◆ gos_gpio_direct_set()

gos_result_t gos_gpio_direct_set	(	gos_gpio_t	`gpio,`
		bool	`value`
	)

Set value of output GPIO (HIGH or LOW)

Note: This bypass Gecko OS and directly accesses the GPIO driver.

◆ gos_gpio_get()

bool gos_gpio_get ( gos_gpio_t gpio )

Get value of GPIO.

See Gecko OS Command API documentation: gpio_set .

Note: The gpio need NOT be initialized as an input first.

Examples:: dms/messages/main.c , dms/telemetry/main.c , network/http_server/requests/json_generator.c , network/http_server_stream/main.c , peripheral/gpio_irq/main.c , utility/msgpack/read_write_buffer.c , and utility/msgpack/read_write_stream.c .

◆ gos_gpio_init()

gos_result_t gos_gpio_init	(	gos_gpio_t	`gpio,`
		gos_gpio_config_t	`direction,`
		bool	`init_val`
	)

Initialize GPIO as input or output.

See Gecko OS Command API documentation: gpio_dir .

Examples:: dms/messages/main.c , dms/telemetry/main.c , intro/blinky/main.c , network/http_server/main.c , network/http_server_stream/main.c , peripheral/gpio_irq/main.c , system/indicator/main.c , and test/spi_loop_back/main.c .

◆ gos_gpio_irq_disable()

gos_result_t gos_gpio_irq_disable ( gos_gpio_t gpio )

Disables an interrupt trigger for an input GPIO pin.

Disables an interrupt trigger for an input GPIO pin. Using this function on a gpio pin which has not been set up using gos_gpio_irq_enable() is undefined.

Parameters

gpio : the gpio pin which provided the interrupt trigger

◆ gos_gpio_irq_enable()

gos_result_t gos_gpio_irq_enable	(	gos_gpio_t	`gpio,`
		gos_gpio_irq_trigger_t	`edge,`
		gos_handler_t	`callback,`
		void *	`arg`
	)

Execute the given callback when the specified edge event is detected on the GPIO.

The callback is executed in the IRQ context and MUST be very light-weight. All heavy processing should be deferred to the app thread.

Note: The corresponding GPIO need MUST be configured as an input first.

Examples:: peripheral/gpio_irq/main.c .

◆ gos_gpio_mask_clear()

gos_result_t gos_gpio_mask_clear ( uint32_t gpio_mask )

Set output GPIOs LOW.

For any bit in the mask that's '1', the corresponding GPIO's value is driven LOW ('0' valued bits are ignored)

Note: The corresponding GPIO must be configured as an OUTPUT first.

◆ gos_gpio_mask_get()

uint32_t gos_gpio_mask_get ( uint32_t gpio_mask )

Return value of GPIOs.

For any bit in the mask that's '1', the corresponding GPIO's value is read and returned in the value mask.

Note: The corresponding GPIO need NOT be configured as an input first.

Examples:: file/log_file/main.c , file/log_file_encrypted/main.c , network/tcp_client/main.c , network/udp_client/main.c , network/udp_hello_gpio/main.c , and network/websocket_client/main.c .

◆ gos_gpio_mask_set()

gos_result_t gos_gpio_mask_set ( uint32_t gpio_mask )

Set output GPIOs HIGH.

For any bit in the mask that's '1', the corresponding GPIO's value is driven HIGH ('0' valued bits are ignored)

Note: The corresponding GPIO must be configured as an OUTPUT first.

◆ gos_gpio_set()

gos_result_t gos_gpio_set	(	gos_gpio_t	`gpio,`
		bool	`value`
	)