uart_samd.c File Reference

UART functions.

Copyright (c) 2014-2018 Microchip Technology Inc. and its subsidiaries.

#include "conf_example.h"
#include "conf_usb_host.h"
#include <asf.h>

Functions
void	uart_close (void)
	Closes communication line. More...
void	uart_config (usb_cdc_line_coding_t *cfg)
	Configures communication line. More...
void	uart_open (void)
	Opens communication line. More...
void	uart_rx_notify (void)
	Callback called by CDC interface when the CDC device has received data. More...
static void	usart_rx_callback (struct usart_module *const module)
	USART interrupt callback function. More...
static void	usart_tx_callback (struct usart_module *const module)
	USART interrupt callback function. More...

Variables
static uint8_t	rx_data
static volatile uint8_t	tx_callback_flag = 0
static uint8_t	tx_data
struct usart_config	usart_conf
struct usart_module	usart_module_edbg

void uart_close

(

void

)

Closes communication line.

References usart_disable(), and usart_module_edbg.

void uart_config

(

usb_cdc_line_coding_t *

cfg

)

Configures communication line.

Parameters

cfg	pointer on line configuration descriptor

References usart_config::baudrate, usb_cdc_line_coding_t::bCharFormat, usb_cdc_line_coding_t::bDataBits, usb_cdc_line_coding_t::bParityType, CDC_PAR_EVEN, CDC_PAR_MARK, CDC_PAR_NONE, CDC_PAR_ODD, CDC_PAR_SPACE, CDC_STOP_BITS_1, CDC_STOP_BITS_1_5, CDC_STOP_BITS_2, usart_config::character_size, CONF_USART_BASE, CONF_USART_MUX_SETTING, CONF_USART_PINMUX_PAD0, CONF_USART_PINMUX_PAD1, CONF_USART_PINMUX_PAD2, CONF_USART_PINMUX_PAD3, usb_cdc_line_coding_t::dwDTERate, LE32_TO_CPU, usart_config::mux_setting, usart_config::parity, usart_config::pinmux_pad0, usart_config::pinmux_pad1, usart_config::pinmux_pad2, usart_config::pinmux_pad3, rx_data, usart_config::stopbits, USART_CALLBACK_BUFFER_RECEIVED, USART_CALLBACK_BUFFER_TRANSMITTED, USART_CHARACTER_SIZE_5BIT, USART_CHARACTER_SIZE_6BIT, USART_CHARACTER_SIZE_7BIT, USART_CHARACTER_SIZE_8BIT, usart_conf, usart_disable(), usart_enable(), usart_enable_callback(), usart_get_config_defaults(), usart_init(), usart_module_edbg, USART_PARITY_EVEN, USART_PARITY_NONE, USART_PARITY_ODD, usart_read_buffer_job(), usart_register_callback(), usart_rx_callback(), USART_STOPBITS_1, USART_STOPBITS_2, and usart_tx_callback().

Referenced by ui_usb_enum_event().

void uart_open

(

void

)

Opens communication line.

References usart_enable(), and usart_module_edbg.

Referenced by ui_usb_enum_event().

void uart_rx_notify

(

void

)

Callback called by CDC interface when the CDC device has received data.

References tx_callback_flag, tx_data, uhi_cdc_getc(), ui_com_rx_start(), USART_CALLBACK_BUFFER_TRANSMITTED, usart_enable_callback(), usart_module_edbg, and usart_write_buffer_job().

static void usart_rx_callback ( struct usart_module *const  module )

static

USART interrupt callback function.

Called by USART driver when receiving is complete.

• Parameters

  module

  USART module causing the interrupt (not used)

References rx_data, uhi_cdc_is_tx_ready(), uhi_cdc_putc(), ui_com_overflow(), ui_com_tx_start(), ui_com_tx_stop(), usart_module_edbg, and usart_read_buffer_job().

Referenced by uart_config().

static void usart_tx_callback ( struct usart_module *const  module )

static

USART interrupt callback function.

Called by USART driver when transmit is complete.

• Parameters

  module

  USART module causing the interrupt (not used)

References tx_callback_flag, tx_data, uhi_cdc_getc(), uhi_cdc_is_rx_ready(), ui_com_rx_start(), ui_com_rx_stop(), USART_CALLBACK_BUFFER_TRANSMITTED, usart_disable_callback(), usart_module_edbg, and usart_write_buffer_job().

Referenced by uart_config().

uint8_t rx_data

static

Referenced by _usart_read_buffer(), uart_config(), uhi_cdc_getc(), and usart_rx_callback().

volatile uint8_t tx_callback_flag = 0

static

Referenced by uart_rx_notify(), and usart_tx_callback().

uint8_t tx_data

static

Referenced by _usart_write_buffer(), uart_rx_notify(), usart_tx_callback(), and usart_write_wait().

struct usart_config usart_conf

Referenced by uart_config().

struct usart_module usart_module_edbg

Referenced by uart_close(), uart_config(), uart_open(), uart_rx_notify(), usart_rx_callback(), and usart_tx_callback().