uart_serial.h File Reference

Uart Serial for SAM.

Copyright (c) 2011-2018 Microchip Technology Inc. and its subsidiaries.

#include "compiler.h"
#include "sysclk.h"
#include "flexcom.h"
#include "uart.h"
#include "usart.h"
#include "conf_uart_serial.h"

Data Structures
struct	uart_rs232_options
	Input parameters when initializing RS232 and similar modes. More...

Typedefs
typedef Usart *	usart_if
	This type can be used independently to refer to USART module for the architecture used. More...
typedef struct uart_rs232_options	usart_rs232_options_t
	Input parameters when initializing RS232 and similar modes. More...
typedef usart_rs232_options_t	usart_serial_options_t

Functions
static void	usart_serial_getchar (usart_if p_usart, uint8_t *data)
	Waits until a character is received, and returns it. More...
static void	usart_serial_init (usart_if p_usart, usart_serial_options_t *opt)
	Initializes the Usart in master mode. More...
static uint32_t	usart_serial_is_rx_ready (usart_if p_usart)
	Check if Received data is ready. More...
static int	usart_serial_putchar (usart_if p_usart, const uint8_t c)
	Sends a character with the USART. More...
status_code_t	usart_serial_read_packet (usart_if usart, uint8_t *data, size_t len)
	Receive a sequence of bytes to a USART device. More...
status_code_t	usart_serial_write_packet (usart_if usart, const uint8_t *data, size_t len)
	Send a sequence of bytes to a USART device. More...

usart_if

This type can be used independently to refer to USART module for the architecture used.

It refers to the correct type definition for the architecture, ie. USART_t* for XMEGA or avr32_usart_t* for UC3.

typedef struct uart_rs232_options usart_rs232_options_t

Input parameters when initializing RS232 and similar modes.

typedef usart_rs232_options_t usart_serial_options_t

static void usart_serial_getchar ( usart_if  p_usart, uint8_t *  data  )

inlinestatic

Waits until a character is received, and returns it.

Parameters

p_usart	Base address of the USART instance.
data	Data to read

References UART, UNUSED, and usart_read().

Referenced by stdio_serial_init(), and usart_serial_read_packet().

static void usart_serial_init ( usart_if  p_usart, usart_serial_options_t *  opt  )

inlinestatic

Initializes the Usart in master mode.

Parameters

p_usart	Base address of the USART instance.
opt	Options needed to set up RS232 communication (see usart_options_t).

References uart_rs232_options::baudrate, sam_usart_opt_t::baudrate, sam_usart_opt_t::channel_mode, sam_usart_opt_t::char_length, uart_rs232_options::charlength, sam_usart_opt_t::parity_type, uart_rs232_options::paritytype, sam_usart_opt_t::stop_bits, uart_rs232_options::stopbits, sysclk_enable_peripheral_clock(), sysclk_get_peripheral_bus_hz(), UART, usart_enable_rx(), usart_enable_tx(), and usart_init_rs232().

Referenced by stdio_serial_init().

static uint32_t usart_serial_is_rx_ready ( usart_if  p_usart )

inlinestatic

Check if Received data is ready.

Parameters

p_usart

Base address of the USART instance.

Return values

1	One data has been received.
0	No data has been received.

References UART, and usart_is_rx_ready().

static int usart_serial_putchar ( usart_if  p_usart, const uint8_t  c  )

inlinestatic

Sends a character with the USART.

Parameters

p_usart	Base address of the USART instance.
c	Character to write.

Returns

Status.

Return values

1	The character was written.
0	The function timed out before the USART transmitter became ready to send.

References UART, and usart_write().

Referenced by stdio_serial_init(), and usart_serial_write_packet().

status_code_t usart_serial_read_packet	(	usart_if	usart,
		uint8_t *	data,
		size_t	len
	)

Receive a sequence of bytes to a USART device.

Parameters

usart	Base address of the USART instance.
data	data buffer to write
len	Length of data

Receive a sequence of bytes to a USART device.

Parameters

usart	Base address of the USART instance.
data	Data buffer to write
len	Length of data

References STATUS_OK, and usart_serial_getchar().

status_code_t usart_serial_write_packet	(	usart_if	usart,
		const uint8_t *	data,
		size_t	len
	)

Send a sequence of bytes to a USART device.

Parameters

usart	Base address of the USART instance.
data	data buffer to write
len	Length of data

Send a sequence of bytes to a USART device.

Parameters

usart	Base address of the USART instance.
data	Data buffer to read
len	Length of data

References STATUS_OK, and usart_serial_putchar().