serial_test.h File Reference

#include <errno.h>
#include <zephyr/device.h>

Go to the source code of this file.

Typedefs
typedef void(*	serial_vnd_write_cb_t) (const struct device *dev, void *user_data)
	Callback called after bytes written to the virtual serial port. More...

Functions
int	serial_vnd_queue_in_data (const struct device *dev, unsigned char *data, uint32_t size)
	Queues data to be read by the virtual serial port. More...
uint32_t	serial_vnd_out_data_size_get (const struct device *dev)
	Returns size of unread written data. More...
uint32_t	serial_vnd_read_out_data (const struct device *dev, unsigned char *data, uint32_t size)
	Read data written to virtual serial port. More...
uint32_t	serial_vnd_peek_out_data (const struct device *dev, unsigned char *data, uint32_t size)
	Peek at data written to virtual serial port. More...
void	serial_vnd_set_callback (const struct device *dev, serial_vnd_write_cb_t callback, void *user_data)
	Sets the write callback on a virtual serial port. More...

Typedef Documentation

serial_vnd_write_cb_t

typedef void(* serial_vnd_write_cb_t) (const struct device *dev, void *user_data)

Callback called after bytes written to the virtual serial port.

Parameters

dev	Address of virtual serial port.
user_data	User data.

Function Documentation

serial_vnd_out_data_size_get()

uint32_t serial_vnd_out_data_size_get

(

const struct device *

dev

)

Returns size of unread written data.

Parameters

dev	Address of virtual serial port.

Returns

Output data size (in bytes).

serial_vnd_peek_out_data()

uint32_t serial_vnd_peek_out_data	(	const struct device *	dev,
		unsigned char *	data,
		uint32_t	size
	)

Peek at data written to virtual serial port.

Reads the data without consuming it. Future calls to serial_vnd_peek_out_data() or serial_vnd_read_out_data() will return this data again. Requires CONFIG_RING_BUFFER.

Warning

Use cases involving multiple reads of the data must prevent concurrent read operations, either by preventing all readers from being preempted or by using a mutex to govern reads.

Parameters

dev	Address of virtual serial port.
data	Address of the output buffer. Cannot be NULL.
size	Data size (in bytes).

Return values

Number

of bytes written to the output buffer.

serial_vnd_queue_in_data()

int serial_vnd_queue_in_data	(	const struct device *	dev,
		unsigned char *	data,
		uint32_t	size
	)

Queues data to be read by the virtual serial port.

Warning

Use cases involving multiple writers virtual serial port must prevent concurrent write operations, either by preventing all writers from being preempted or by using a mutex to govern writes.

Parameters

dev	Address of virtual serial port.
data	Address of data.
size	Data size (in bytes).

Return values

Number

of bytes written.

serial_vnd_read_out_data()

uint32_t serial_vnd_read_out_data	(	const struct device *	dev,
		unsigned char *	data,
		uint32_t	size
	)

Read data written to virtual serial port.

Consumes the data, such that future calls to serial_vnd_read_out_data() will not include this data. Requires CONFIG_RING_BUFFER.

Warning

Use cases involving multiple reads of the data must prevent concurrent read operations, either by preventing all readers from being preempted or by using a mutex to govern reads.

Parameters

dev	Address of virtual serial port.
data	Address of the output buffer. Can be NULL to discard data.
size	Data size (in bytes).

Return values

Number

of bytes written to the output buffer.

serial_vnd_set_callback()

void serial_vnd_set_callback	(	const struct device *	dev,
		serial_vnd_write_cb_t	callback,
		void *	user_data
	)

Sets the write callback on a virtual serial port.

Parameters

dev	Address of virtual serial port.
callback	Function to call after each write to the port.
user_data	Opaque data to pass to the callback.