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# uart_drv.h

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    00001 /*This file has been prepared for Doxygen automatic documentation generation.*/
    00013
    00014 /* Copyright (c) 2007, Atmel Corporation All rights reserved.
    00015  *
    00016  * Redistribution and use in source and binary forms, with or without
    00017  * modification, are permitted provided that the following conditions are met:
    00018  *
    00019  * 1. Redistributions of source code must retain the above copyright notice,
    00020  * this list of conditions and the following disclaimer.
    00021  *
    00022  * 2. Redistributions in binary form must reproduce the above copyright notice,
    00023  * this list of conditions and the following disclaimer in the documentation
    00024  * and/or other materials provided with the distribution.
    00025  *
    00026  * 3. The name of ATMEL may not be used to endorse or promote products derived
    00027  * from this software without specific prior written permission.
    00028  *
    00029  * THIS SOFTWARE IS PROVIDED BY ATMEL ``AS IS'' AND ANY EXPRESS OR IMPLIED
    00030  * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
    00031  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE EXPRESSLY AND
    00032  * SPECIFICALLY DISCLAIMED. IN NO EVENT SHALL ATMEL BE LIABLE FOR ANY DIRECT,
    00033  * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
    00034  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
    00035  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
    00036  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
    00037  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
    00038  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
    00039  */
    00040
    00041 #ifndef _UART_DRV_H_
    00042 #define _UART_DRV_H_
    00043
    00044 #define MSK_UART_5BIT           0x00 /* UCSRnC register */
    00045 #define MSK_UART_6BIT           0x02
    00046 #define MSK_UART_7BIT           0x04
    00047 #define MSK_UART_8BIT           0x06
    00048 #define MSK_UART_9BIT           0x06
    00049
    00050 #define MSK_UART_RX_DONE        0x80 /* UCSRnA register */
    00051 #define MSK_UART_TX_COMPLET     0x40
    00052 #define MSK_UART_DRE            0x20
    00053
    00054 #define MSK_UART_ENABLE_IT_RX   0x80
    00055 #define MSK_UART_ENABLE_IT_TX   0x40
    00056 #define MSK_UART_ENABLE_RX      0x10 /* UCSRnB register */
    00057 #define MSK_UART_ENABLE_TX      0x08
    00058 #define MSK_UART_TX_BIT9        0x01
    00059 #define MSK_UART_RX_BIT9        0x02
    00060
    00061 #ifdef USE_UART1
    00062     #define UCSRC   (UCSR0C)
    00063     #define UCSRB   (UCSR0B)
    00064     #define UCSRA   (UCSR0A)
    00065     #define UDR     (UDR0)
    00066     #define UBRRL   (UBRR0L)
    00067     #define UBRRH   (UBRR0H)
    00068     #define UBRR    (UBRR0)
    00069 #endif
    00070 #ifdef USE_UART2
    00071     #define UCSRC    (UCSR1C)
    00072     #define UCSRB    (UCSR1B)
    00073     #define UCSRA    (UCSR1A)
    00074     #define UDR      (UDR1)
    00075     #define UBRRL    (UBRR1L)
    00076     #define UBRRH    (UBRR1H)
    00077     #define UBRR     (UBRR1)
    00078
    00079 #endif
    00080
    00081
    00082 #define Uart_hw_init(config)    (UCSRC=config)
    00083 #define Uart_enable()           (UCSRB|=MSK_UART_ENABLE_RX|MSK_UART_ENABLE_TX)
    00084 #define Uart_tx_ready()         (UCSRA&MSK_UART_DRE)
    00085 #define Uart_set_tx_busy()
    00086 #define Uart_send_byte(ch)      (UDR=ch)
    00087 #define Uart_rx_ready()         (UCSRA&MSK_UART_RX_DONE)
    00088 #define Uart_get_byte()         (UDR)
    00089 #define Uart_ack_rx_byte()
    00090
    00091 #define Uart_enable_it_rx()    (UCSRB|=MSK_UART_ENABLE_IT_RX)
    00092 #define Uart_enable_it_tx()    (UCSRB|=MSK_UART_ENABLE_IT_TX)
    00093 #define Uart_disable_it_rx()   (UCSRB&=~MSK_UART_ENABLE_IT_RX)
    00094
    00095 #endif