serialF0.h File Reference

Serial interface voor HvA-Xmegaboard. More...

#include <stdio.h>

Go to the source code of this file.

Macros
#define	TXBUF_DEPTH_F0   100
	size of transmit buffer
#define	RXBUF_DEPTH_F0   100
	size of receive buffer
#define	UART_NO_DATA   0x0100
	Macro UART_NO_DATA is returned by uart_getc when no data is present.
#define	clear_screen()   printf("\e[H\e[2J\e[3J");
	Macro to reset and clear the terminal.

Functions
char *	getline (char *buf, uint16_t len)
	Get a line from the serial input. More...
void	init_stream (uint32_t f_cpu)
	Initializes the serial stream for the HvA-Xmegaboard. More...
uint16_t	uartF0_getc (void)
	Read a byte from UARTF0. More...
void	uartF0_putc (uint8_t data)
	Send a byte to UARTF0. More...
void	uartF0_puts (char *s)
	Send a string to UARTF0. More...

Detailed Description

Serial interface voor HvA-Xmegaboard.

Author

Wim Dolman (w.e.dolman@hva.nl)

Date

16-04-2018

Version

1.8

This serial interface doesn't use the drivers of Atmel The interface uses two non circulair buffers for sending and receiving the data. It is based om md_serial.c from J.D.Bakker.

It is a serial interface for the HvA-Xmegaboard (Version 2) with a Xmega256a3u and Xmega32a4u for programming and the serial interface. You can use the standard printf, putchar, puts, scanf, getchar, ... functions.

The baud rate is 115200

Function Documentation

getline()

char* getline	(	char *	buf,
		uint16_t	len
	)

Get a line from the serial input.

Parameters

buf	pointer to a buffer to store the received line
len	length of the buffer to store the received line

The line has to be finished with a End-Of-Line. This can be <CR>, <CR><LF> or <LF>

Returns

Received character

init_stream()

void init_stream

(

uint32_t

f_cpu

)

Initializes the serial stream for the HvA-Xmegaboard.

Parameters

f_cpu

clock frequency

The only paramter is the clockfrequency. The default baud rate is 115200. At the moment this match best with the HvA-Xmegaboard. If you want to use another baud rate you can change it in this function.

Returns

void

uartF0_getc()

uint16_t uartF0_getc ( void  )

inline

Read a byte from UARTF0.

Returns

Received byte from buffer or UART_NO_DATA if buffer is empty

uartF0_putc()

void uartF0_putc ( uint8_t  data )

inline

Send a byte to UARTF0.

Parameters

data	byte to send

Returns

void

uartF0_puts()

void uartF0_puts

(

char *

s

)

Send a string to UARTF0.

Parameters

s	a pointer to the pointer

Returns

void