ATMEL: uart_lib.c Source File

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# uart_lib.c

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    00001 /*This file is prepared for Doxygen automatic documentation generation.*/
    00014
    00015 /* Copyright (c) 2009 Atmel Corporation. All rights reserved.
    00016  *
    00017  * Redistribution and use in source and binary forms, with or without
    00018  * modification, are permitted provided that the following conditions are met:
    00019  *
    00020  * 1. Redistributions of source code must retain the above copyright notice,
    00021  * this list of conditions and the following disclaimer.
    00022  *
    00023  * 2. Redistributions in binary form must reproduce the above copyright notice,
    00024  * this list of conditions and the following disclaimer in the documentation
    00025  * and/or other materials provided with the distribution.
    00026  *
    00027  * 3. The name of Atmel may not be used to endorse or promote products derived
    00028  * from this software without specific prior written permission.
    00029  *
    00030  * THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR IMPLIED
    00031  * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
    00032  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE EXPRESSLY AND
    00033  * SPECIFICALLY DISCLAIMED. IN NO EVENT SHALL ATMEL BE LIABLE FOR ANY DIRECT,
    00034  * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
    00035  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
    00036  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
    00037  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
    00038  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
    00039  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
    00040  */
    00041
    00042 /*_____ I N C L U D E S ____________________________________________________*/
    00043 #include "config.h"
    00044 #include "lib_mcu/uart/uart_lib.h"
    00045
    00046
    00047 /*_____ G L O B A L    D E F I N I T I O N _________________________________*/
    00048
    00049
    00050 /*_____ D E F I N I T I O N ________________________________________________*/
    00051
    00052 /*_____ M A C R O S ________________________________________________________*/
    00053
    00054
    00055 bit uart_test_hit (void)
    00056 {
    00057 return Uart_rx_ready();
    00058 }
    00059
    00060
    00061 bit uart_init (void)
    00062 {
    00063 #ifndef UART_U2
    00064   Uart_set_baudrate(BAUDRATE);
    00065   Uart_hw_init(UART_CONFIG);
    00066 #else
    00067   Uart_set_baudrate(BAUDRATE/2);
    00068   Uart_double_bdr();
    00069   Uart_hw_init(UART_CONFIG);
    00070
    00071 #endif
    00072   Uart_enable();
    00073   return TRUE;
    00074 }
    00075
    00076
    00077 r_uart_ptchar uart_putchar (p_uart_ptchar ch)
    00078 {
    00079   while(!Uart_tx_ready());
    00080   Uart_set_tx_busy(); // Set Busy flag before sending (always)
    00081   Uart_send_byte(ch);
    00082
    00083   return ch;
    00084 }
    00085
    00086
    00087
    00088
    00089 char uart_getchar (void)
    00090 {
    00091   register char c;
    00092
    00093   while(!Uart_rx_ready());
    00094   c = Uart_get_byte();
    00095   Uart_ack_rx_byte();
    00096   return c;
    00097 }
    00098
    00099