00001 /*This file has been prepared for Doxygen automatic documentation generation.*/ 00021 /* Copyright (C) 2006-2008, Atmel Corporation All rights reserved. 00022 * 00023 * Redistribution and use in source and binary forms, with or without 00024 * modification, are permitted provided that the following conditions are met: 00025 * 00026 * 1. Redistributions of source code must retain the above copyright notice, 00027 * this list of conditions and the following disclaimer. 00028 * 00029 * 2. Redistributions in binary form must reproduce the above copyright notice, 00030 * this list of conditions and the following disclaimer in the documentation 00031 * and/or other materials provided with the distribution. 00032 * 00033 * 3. The name of ATMEL may not be used to endorse or promote products derived 00034 * from this software without specific prior written permission. 00035 * 00036 * THIS SOFTWARE IS PROVIDED BY ATMEL ``AS IS'' AND ANY EXPRESS OR IMPLIED 00037 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 00038 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE EXPRESSLY AND 00039 * SPECIFICALLY DISCLAIMED. IN NO EVENT SHALL ATMEL BE LIABLE FOR ANY DIRECT, 00040 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 00041 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 00042 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND 00043 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 00044 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 00045 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 00046 */ 00047 00048 00049 #include "pio.h" 00050 00051 #ifdef __GNUC__ 00052 #include <avr32/io.h> 00053 #elif __ICCAVR32__ 00054 #include <avr32/ioap7000.h> 00055 #else 00056 #error No known compiler used 00057 #endif 00058 00059 #define INPUT_MASK 0x000000ff 00060 #define OUTPUT_MASK 0x000000ff 00061 00062 #define SUCCESS 0 00063 00064 00074 int main( void ) 00075 { 00076 volatile avr32_pio_t *piob = &AVR32_PIOB; 00077 volatile avr32_pio_t *pioc = &AVR32_PIOC; 00078 unsigned int input, output; 00079 00080 pioc->per = OUTPUT_MASK; 00081 piob->per = INPUT_MASK; 00082 00083 pioc->oer = OUTPUT_MASK; 00084 pioc->puer = OUTPUT_MASK; 00085 pioc->codr = OUTPUT_MASK; 00086 piob->codr = INPUT_MASK; 00087 00088 while(1){ 00089 input = ( piob->pdsr & INPUT_MASK); /* get input */ 00090 output = ( pioc->pdsr & OUTPUT_MASK); /* get output */ 00091 00092 if ( output != input){ 00093 pioc->codr = OUTPUT_MASK; /* clear output */ 00094 pioc->sodr = (~input & OUTPUT_MASK); /* set output from input */ 00095 } 00096 00097 } 00098 }