mirror of
https://github.com/oliverschmidt/contiki.git
synced 2024-12-24 07:29:42 +00:00
79 lines
2.9 KiB
C
79 lines
2.9 KiB
C
/*
|
|
* Copyright (c) 2008 Swedish Institute of Computer Science
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions are met:
|
|
*
|
|
* * Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* * Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in
|
|
* the documentation and/or other materials provided with the
|
|
* distribution.
|
|
* * Neither the name of the copyright holders nor the names of
|
|
* contributors may be used to endorse or promote products derived
|
|
* from this software without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
|
|
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
|
|
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
|
|
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
|
|
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
|
|
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
|
|
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
|
|
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
|
* POSSIBILITY OF SUCH DAMAGE.
|
|
*/
|
|
/**
|
|
* \file
|
|
*
|
|
* \brief
|
|
* Handles the control of the USART for communication with the ATmega1284p
|
|
* for sending commands.
|
|
*
|
|
* \author
|
|
* Mike Vidales mavida404@gmail.com
|
|
*
|
|
*/
|
|
|
|
#ifndef __UART_H__
|
|
#define __UART_H__ 1
|
|
|
|
#include <inttypes.h>
|
|
|
|
/** \name ASCII characters defined */
|
|
/** \{ */
|
|
#define SOF_CHAR (0x01) /**< Start-of-frame character. */
|
|
#define EOF_CHAR (0x04) /**< End-of-frame character. */
|
|
/** \} */
|
|
|
|
/* Macros & Defines */
|
|
|
|
#define BUFSIZE 80
|
|
#define BAUD_RATE_38400 (12)
|
|
|
|
/** \brief Circular buffer structure */
|
|
typedef struct {
|
|
volatile uint8_t head; /**< Index to last available character in buffer. */
|
|
volatile uint8_t tail; /**< Index to first available character in buffer. */
|
|
uint8_t buf[BUFSIZE]; /**< The actual buffer used for storing characters. */
|
|
} tcirc_buf;
|
|
|
|
extern tcirc_buf rxbuf;
|
|
#define rx_char_ready() (rxbuf.head != rxbuf.tail)
|
|
|
|
/* Serial port functions */
|
|
void uart_init(void);
|
|
void uart_deinit(void);
|
|
uint8_t uart_circ_buf_has_char(tcirc_buf *cbuf);
|
|
void uart_clear_rx_buf(void);
|
|
uint8_t uart_get_char_rx(void);
|
|
void uart_send_byte(uint8_t byte);
|
|
void uart_serial_send_frame(uint8_t cmd, uint8_t payload_length, uint8_t *payload);
|
|
void uart_serial_rcv_frame(uint8_t wait_for_it);
|
|
|
|
#endif /* __UART_H__ */
|