00001 /* FreeEMS - the open source engine management system 00002 * 00003 * Copyright 2008, 2009 Fred Cooke 00004 * 00005 * This file is part of the FreeEMS project. 00006 * 00007 * FreeEMS software is free software: you can redistribute it and/or modify 00008 * it under the terms of the GNU General Public License as published by 00009 * the Free Software Foundation, either version 3 of the License, or 00010 * (at your option) any later version. 00011 * 00012 * FreeEMS software is distributed in the hope that it will be useful, 00013 * but WITHOUT ANY WARRANTY; without even the implied warranty of 00014 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 00015 * GNU General Public License for more details. 00016 * 00017 * You should have received a copy of the GNU General Public License 00018 * along with any FreeEMS software. If not, see http://www.gnu.org/licenses/ 00019 * 00020 * We ask that if you make any changes to this file you email them upstream to 00021 * us at admin(at)diyefi(dot)org or, even better, fork the code on github.com! 00022 * 00023 * Thank you for choosing FreeEMS to run your engine! 00024 */ 00025 00026 00032 /* Header file multiple inclusion protection courtesy eclipse Header Template */ 00033 /* and http://gcc.gnu.org/onlinedocs/gcc-3.1.1/cpp/ C pre processor manual */ 00034 #ifndef FILE_COMMS_ISRS_H_SEEN 00035 #define FILE_COMMS_ISRS_H_SEEN 00036 00037 00038 #ifdef EXTERN 00039 #warning "EXTERN already defined by another header, please sort it out!" 00040 #undef EXTERN /* If fail on warning is off, remove the definition such that we can redefine correctly. */ 00041 #endif 00042 00043 00044 #ifdef COMMSISRS_C 00045 #define EXTERN 00046 #else 00047 #define EXTERN extern 00048 #endif 00049 00050 00051 /* SCISR1 register fields 00052 * 00053 * From left most/most significant to right most/least significant. 00054 * 00055 * Abrev Description Actions/Meaning 00056 * TRDE - Transmit Data Register Empty - Load with more data if there is any - Main Flag 00057 * TC - Transmit Complete - Nothing being sent and nothing loaded ready - unused 00058 * RDRF - Receive Data Register Full - Store data in buffer until packet complete - Main Flag 00059 * IDLE - Idle Line - Receive line is quiet - unused 00060 * OR - Overrun - Discard partial data received and increment counter 00061 * NF - Noise Flag - Discard partial data received and increment counter 00062 * FE - Framing Error - Discard partial data received and increment counter 00063 * PF - Parity Error - Discard partial data received and increment counter 00064 * 00065 * SCISR1 flag masks */ 00066 #define SCISR1_TX_REGISTER_EMPTY BIT7 00067 #define SCISR1_TX_COMPLETE BIT6 00068 #define SCISR1_RX_REGISTER_FULL BIT5 00069 #define SCISR1_RX_IDLE_LINE BIT4 00070 #define SCISR1_RX_OVERRUN BIT3 00071 #define SCISR1_RX_NOISE BIT2 00072 #define SCISR1_RX_FRAMING BIT1 00073 #define SCISR1_RX_PARITY BIT0 00074 00075 00076 /* TX/RX state variables */ 00077 EXTERN unsigned char TXByteEscaped; 00078 EXTERN unsigned char RXCalculatedChecksum; 00079 00080 00081 #undef EXTERN 00082 00083 #else 00084 /* let us know if we are being untidy with headers */ 00085 #warning "Header file COMMS_ISRS_H seen before, sort it out!" 00086 /* end of the wrapper ifdef from the very top */ 00087 #endif
1.6.3