uart_sam.c File Reference

UART functions.

Copyright (c) 2012-2018 Microchip Technology Inc. and its subsidiaries.

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

Macros
#define	USART_PERIPH_CLK_ENABLE()   sysclk_enable_peripheral_clock(USART_BASE)

Functions
	ISR (USART_HANDLER)
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...

Variables
static sam_usart_opt_t	usart_options

#define USART_PERIPH_CLK_ENABLE

(

)

sysclk_enable_peripheral_clock(USART_BASE)

Referenced by uart_open().

ISR

(

USART_HANDLER

)

References uhi_cdc_getc(), uhi_cdc_is_rx_ready(), uhi_cdc_is_tx_ready(), uhi_cdc_putc(), ui_com_error(), ui_com_overflow(), ui_com_rx_start(), ui_com_rx_stop(), ui_com_tx_start(), ui_com_tx_stop(), USART_BASE, usart_disable_interrupt(), usart_disable_tx(), usart_enable_rx(), usart_get_status(), usart_read(), usart_reset_rx(), and usart_write().

void uart_close

(

void

)

Closes communication line.

References USART_BASE, USART_DISABLE, and usart_disable_interrupt().

void uart_config

(

usb_cdc_line_coding_t *

cfg

)

Configures communication line.

Parameters

cfg	pointer on line configuration descriptor

References sam_usart_opt_t::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, sam_usart_opt_t::channel_mode, sam_usart_opt_t::char_length, usb_cdc_line_coding_t::dwDTERate, LE32_TO_CPU, sam_usart_opt_t::parity_type, sam_usart_opt_t::stop_bits, sysclk_get_peripheral_bus_hz(), USART_BASE, usart_disable_interrupt(), usart_enable_interrupt(), usart_enable_rx(), usart_enable_tx(), usart_get_interrupt_mask(), and usart_init_rs232().

Referenced by ui_usb_enum_event().

void uart_open

(

void

)

Opens communication line.

References sysclk_get_peripheral_bus_hz(), USART_BASE, USART_ENABLE, usart_enable_interrupt(), usart_enable_rx(), usart_enable_tx(), usart_init_rs232(), USART_INT_IRQn, USART_INT_LEVEL, and USART_PERIPH_CLK_ENABLE.

Referenced by ui_usb_enum_event().

void uart_rx_notify

(

void

)

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

References USART_BASE, usart_enable_interrupt(), usart_enable_tx(), and usart_get_interrupt_mask().

sam_usart_opt_t usart_options

static

Initial value:

= {
    .baudrate = 115200,
    .char_length = US_MR_CHRL_8_BIT,
    .parity_type = US_MR_PAR_NO,
    .stop_bits = US_MR_NBSTOP_1_BIT,
    .channel_mode = US_MR_CHMODE_NORMAL,
}