usart.c File Reference

SAM SERCOM USART Driver.

Copyright (c) 2012-2020 Microchip Technology Inc. and its subsidiaries.

#include "usart.h"
#include <pinmux.h>
#include "usart_interrupt.h"

Functions
static enum status_code	_usart_set_config (struct usart_module *const module, const struct usart_config *const config)
enum status_code	usart_init (struct usart_module *const module, Sercom *const hw, const struct usart_config *const config)
	Initializes the device. More...
enum status_code	usart_read_buffer_wait (struct usart_module *const module, uint8_t *rx_data, uint16_t length)
	Receive a buffer of length characters via the USART. More...
enum status_code	usart_read_wait (struct usart_module *const module, uint16_t *const rx_data)
	Receive a character via the USART. More...
enum status_code	usart_write_buffer_wait (struct usart_module *const module, const uint8_t *tx_data, uint16_t length)
	Transmit a buffer of characters via the USART. More...
enum status_code	usart_write_wait (struct usart_module *const module, const uint16_t tx_data)
	Transmit a character via the USART. More...

static enum status_code _usart_set_config ( struct usart_module *const  module, const struct usart_config *const  config  )

static

Set Configuration of the USART module

References _sercom_get_async_baud_val(), _sercom_get_sercom_inst_index(), _sercom_get_sync_baud_val(), Assert, usart_config::baudrate, usart_config::character_size, usart_config::clock_polarity_inverted, usart_config::data_order, usart_config::ext_clock_freq, spi_config::mode, usart_config::mux_setting, usart_config::parity, usart_config::receiver_enable, usart_config::run_in_standby, SERCOM_ASYNC_OPERATION_MODE_ARITHMETIC, SERCOM_ASYNC_OPERATION_MODE_FRACTIONAL, SERCOM_ASYNC_SAMPLE_NUM_16, SERCOM_ASYNC_SAMPLE_NUM_3, SERCOM_ASYNC_SAMPLE_NUM_8, STATUS_OK, usart_config::stopbits, system_gclk_chan_get_hz(), system_is_debugger_present(), spi_config::transfer_mode, usart_config::transfer_mode, usart_config::transmitter_enable, USART_CHARACTER_SIZE_8BIT, USART_PARITY_NONE, USART_STOPBITS_1, USART_TRANSFER_ASYNCHRONOUSLY, USART_TRANSFER_SYNCHRONOUSLY, and usart_config::use_external_clock.

Referenced by usart_init().