00001 /* 00002 00003 Copyright (c) 2010, Embedded Adventures, www.embeddedadventures.com 00004 All rights reserved. 00005 00006 Redistribution and use in source and binary forms, with or without 00007 modification, are permitted provided that the following conditions are met: 00008 00009 - Redistributions of source code must retain the above copyright notice, 00010 this list of conditions and the following disclaimer. 00011 00012 - Redistributions in binary form must reproduce the above copyright 00013 notice, this list of conditions and the following disclaimer in the 00014 documentation and/or other materials provided with the distribution. 00015 00016 - Neither the name of Embedded Adventures nor the names of its contributors 00017 may be used to endorse or promote products derived from this software 00018 without specific prior written permission. 00019 00020 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 00021 AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 00022 IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 00023 ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE 00024 LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 00025 CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 00026 SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 00027 INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 00028 CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 00029 ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF 00030 THE POSSIBILITY OF SUCH DAMAGE. 00031 00032 Contact us at admin@embeddedadventures.com 00033 00034 */ 00035 00041 #ifndef __pic_pwm_h 00042 #define __pic_pwm_h 00043 00044 00045 #include "config.h" 00046 00047 00048 #include "pic_utils.h" 00049 00050 00051 // For config.h 00052 /* 00053 00054 // PWM config details 00055 // - - - - - - - - - - - - - - 00056 #define PWM_NUM_PINS 3 00057 00058 #define PWM_PORT_0 PORTB 00059 #define PWM_PIN_0 1 00060 00061 #define PWM_PORT_1 PORTB 00062 #define PWM_PIN_1 4 00063 00064 #define PWM_PORT_2 PORTB 00065 #define PWM_PIN_2 6 00066 00067 00068 // - - - - - - - - - - - - - 00069 00070 */ 00071 00072 extern uns8 pwm_count; 00073 00074 extern uns8 pwm_level[PWM_NUM_PINS]; 00075 00076 // Handle PWM interrupt 00077 void pwm_handle(); 00078 00079 // Set the level of a particular pin (8 bit value) 00080 void pwm_set_level(uns8 pwm_item, uns8 level); 00081 00082 // Retrieve the level of a particular pin (8 bit value) 00083 uns8 pwm_get_level(uns8 pwm_item); 00084 00085 // Setup PWM pins as outputs 00086 void pwm_setup_io(); 00087 00088 // Transition to another level over time 00089 void pwm_set_transition(uns8 to_level, uns16 steps); 00090 00091 #endif