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 00044 #ifndef __i2c_h 00045 #define __i2c_h defined 00046 00047 #include "config.h" 00048 00049 00050 #include "pic_utils.h" 00051 00052 00053 /* Include this in your config.h 00054 00055 // - - - - - - - - - - - - - - - - - - - - 00056 // pic i2c defines 00057 // - - - - - - - - - - - - - - - - - - - - 00058 00059 #define i2c_scl_port PORTA 00060 #define i2c_sda_port PORTA 00061 #define i2c_scl_pin 0 00062 #define i2c_sda_pin 1 00063 00064 // - - - - - - - - - - - - - - - - - - - - 00065 00066 */ 00068 #define i2c_write_sda() clear_bit(tris_array[i2c_sda_port - PORTA], i2c_sda_pin); // output 00069 00070 #define i2c_read_sda() set_bit(tris_array[i2c_sda_port - PORTA], i2c_sda_pin); // input 00071 00076 void i2c_start(void); 00077 00083 void i2c_stop(void); 00084 00091 uns8 i2c_receive_byte(); 00092 00099 void i2c_send_byte(uns8 data); 00100 00106 uns8 i2c_read_eeprom(uns8 device_address, uns8 mem_address); 00107 00112 void i2c_write_eeprom(uns8 device_address, uns8 mem_address, uns8 data); 00113 00118 void i2c_write_eeprom_16bit(uns8 device_address, uns8 mem_address, uns16 data); 00119 00125 uns16 i2c_read_eeprom_16bit(uns8 device_address, uns8 mem_address); 00126 00132 void i2c_send_ack(void); 00133 00139 void i2c_setup_io(); 00140 #define i2c_setup() i2c_setup_io() 00141 00142 #ifndef i2c_scl_port 00143 #error "You haven't defined i2c_scl_port in your config.h!" 00144 #endif 00145 00146 #ifndef i2c_sda_port 00147 #error "You haven't defined i2c_sda_port in your config.h!" 00148 #endif 00149 00150 #ifndef i2c_scl_pin 00151 #error "You haven't defined i2c_scl_pin in your config.h!" 00152 #endif 00153 00154 #ifndef i2c_sda_pin 00155 #error "You haven't defined i2c_sda_pin in your config.h!" 00156 #endif 00157 00158 00159 00160 #endif