This module enables communication via USART. More...

#include "board.h"

Macros
#define	USART_PORT USB_USART_PORT

#define	USART_MODULE USB_USART_MODULE

#define	USART_RX_PIN_bp USB_USART_RX_PIN_bp

#define	USART_RX_PIN_bm USB_USART_RX_PIN_bm

#define	USART_TX_PIN_bp USB_USART_TX_PIN_bp

#define	USART_TX_PIN_bm USB_USART_TX_PIN_bm

#define	USART_DRE_vect USB_USART_DRE_vect

#define	USART_RXC_vect USB_USART_RXC_vect

#define	USART_BSEL_gc 11

#define	USART_BSCALE_gc -7

#define	USART_CONFIG (USART_CHSIZE_8BIT_gc \| USART_PMODE_DISABLED_gc)

Functions
void	usart_init (void)
	Initialize the USART. More...

uint8_t	usart_receive_complete (void)
	Receive complete. More...

uint8_t	usart_receive (void)
	Receive data. More...

uint8_t	usart_data_register_empty (void)
	Data register empty. More...

void	usart_transmit (uint8_t data)
	Transmit data. More...

Detailed Description

This module enables communication via USART.

Author: Wolfgang Neff

Version: 2.0

Date: 2018-07-04

History: Created: 2012-09-03
Modified: 2014-10-17
Modified: 2015-01-28
Modified: 2018-07-04

Macro Definition Documentation

◆ USART_BSCALE_gc

#define USART_BSCALE_gc -7

◆ USART_BSEL_gc

#define USART_BSEL_gc 11

◆ USART_CONFIG

#define USART_CONFIG (USART_CHSIZE_8BIT_gc | USART_PMODE_DISABLED_gc)

◆ USART_DRE_vect

#define USART_DRE_vect USB_USART_DRE_vect

◆ USART_MODULE

#define USART_MODULE USB_USART_MODULE

◆ USART_PORT

#define USART_PORT USB_USART_PORT

◆ USART_RX_PIN_bm

#define USART_RX_PIN_bm USB_USART_RX_PIN_bm

◆ USART_RX_PIN_bp

#define USART_RX_PIN_bp USB_USART_RX_PIN_bp

◆ USART_RXC_vect

#define USART_RXC_vect USB_USART_RXC_vect

◆ USART_TX_PIN_bm

#define USART_TX_PIN_bm USB_USART_TX_PIN_bm

◆ USART_TX_PIN_bp

#define USART_TX_PIN_bp USB_USART_TX_PIN_bp

Function Documentation

◆ usart_data_register_empty()

uint8_t usart_data_register_empty ( void )

Data register empty.

Checks if the data register is empty. If it is empty new data can be transmitted.

Returns: True if the data register is empty.

◆ usart_init()

void usart_init ( void )

Initialize the USART.

Initializes the USART the gateway. The baud rate and the serial line parameters can be specified by the predefined constants.

◆ usart_receive()

uint8_t usart_receive ( void )

Receive data.

Waits until a byte of data has been received and returns it.

Returns: The data received.

◆ usart_receive_complete()

uint8_t usart_receive_complete ( void )

Receive complete.

Checks if a new data byte has been received.

Returns: True if a data byte has been received.

◆ usart_transmit()

void usart_transmit ( uint8_t data )

Transmit data.

Waits until the transmit buffer is empty and then transmits the passed byte of data.

Parameters

data	The data to be transmitted.

Macros

Functions