hal_usart.h File Reference

USART header file for ATmega328P HAL driver. More...

#include <stdint.h>

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Data Structures
struct	usart_t

Enumerations
enum	usart_result {   usart_success = 0 , usart_error , usart_error_overrun , usart_error_underrun ,   usart_error_framing , usart_error_parity }
enum	usart_direction { usart_direction_transmit , usart_direction_receive , usart_direction_transmit_and_receive }
enum	usart_mode { usart_mode_asynchronous_normal , usart_mode_asynchronous_double_speed , usart_mode_synchronous_master }
enum	usart_parity { usart_parity_disabled , usart_parity_even , usart_parity_odd }

Functions
enum usart_result	usart_init (struct usart_t *usart)
	Initialize USART. More...
enum usart_result	usart_transmit (struct usart_t *usart, uint8_t *data, uint16_t len)
	Transmit data over USART. More...
enum usart_result	usart_receive (struct usart_t *usart, uint8_t *data, uint16_t len)
	Receive data over USART. More...
void	usart_stdio_init ()
	Initialize standart I/O stream.

Detailed Description

USART header file for ATmega328P HAL driver.

Author

Ceyhun Şen

Enumeration Type Documentation

usart_direction

enum usart_direction

USART data direction.

usart_mode

enum usart_mode

Operating modes for USART.

usart_parity

enum usart_parity

Parity options for USART.

usart_result

enum usart_result

Return results for USART module.

Function Documentation

usart_init()

enum usart_result usart_init

(

struct usart_t *

usart

)

Initialize USART.

Parameters

usart

USART struct.

usart_receive()

enum usart_result usart_receive	(	struct usart_t *	usart,
		uint8_t *	data,
		uint16_t	len
	)

Receive data over USART.

Parameters

usart	USART struct.
data	Data buffer that will hold read data from USART buffer.
len	Data buffer length.

usart_transmit()

enum usart_result usart_transmit	(	struct usart_t *	usart,
		uint8_t *	data,
		uint16_t	len
	)

Transmit data over USART.

Parameters

usart	USART struct.
data	Data buffer that will be written to USART buffer.
len	Data buffer length.