00001 /* 00002 * "Copyright (c) 2008 Robert B. Reese, Bryan A. Jones, J. W. Bruce ("AUTHORS")" 00003 * All rights reserved. 00004 * (R. Reese, reese_AT_ece.msstate.edu, Mississippi State University) 00005 * (B. A. Jones, bjones_AT_ece.msstate.edu, Mississippi State University) 00006 * (J. W. Bruce, jwbruce_AT_ece.msstate.edu, Mississippi State University) 00007 * 00008 * Permission to use, copy, modify, and distribute this software and its 00009 * documentation for any purpose, without fee, and without written agreement is 00010 * hereby granted, provided that the above copyright notice, the following 00011 * two paragraphs and the authors appear in all copies of this software. 00012 * 00013 * IN NO EVENT SHALL THE "AUTHORS" BE LIABLE TO ANY PARTY FOR 00014 * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES ARISING OUT 00015 * OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF THE "AUTHORS" 00016 * HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 00017 * 00018 * THE "AUTHORS" SPECIFICALLY DISCLAIMS ANY WARRANTIES, 00019 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY 00020 * AND FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS 00021 * ON AN "AS IS" BASIS, AND THE "AUTHORS" HAS NO OBLIGATION TO 00022 * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS." 00023 * 00024 * Please maintain this header in its entirety when copying/modifying 00025 * these files. 00026 * 00027 * 00028 */ 00029 00030 #include "pic24_all.h" 00031 00039 //Interrupt Service Routine for Change Notification 00040 void _ISRFAST _CNInterrupt (void) { 00041 _CNIF = 0; //clear the change notification interrupt bit 00042 } 00043 00045 inline void CONFIG_SW1() { 00046 CONFIG_RB13_AS_DIG_INPUT(); //use RB13 for switch input 00047 ENABLE_RB13_PULLUP(); //enable the pull-up 00048 ENABLE_RB13_CN_INTERRUPT(); //CN13IE = 1 00049 DELAY_US(1); // Wait for pull-up 00050 } 00051 00052 int main (void) { 00053 configBasic(HELLO_MSG); 00055 CONFIG_SW1(); //enables individual CN interrupt also 00057 _CNIF = 0; //Clear the interrupt flag 00058 _CNIP = 2; //Choose a priority > 0 00059 _CNIE = 1; //enable the Change Notification general interrupt 00060 while (1) { 00061 outString("Entering Sleep mode. Press button to wake.\n"); 00062 // Finish sending characters before sleeping 00063 WAIT_UNTIL_TRANSMIT_COMPLETE_UART1(); 00064 SLEEP(); //macro for asm("pwrsav #0") 00065 } 00066 }
1.5.8