00001 /* 00002 * Copyright (C) 2001-2003 by egnite Software GmbH. All rights reserved. 00003 * 00004 * Redistribution and use in source and binary forms, with or without 00005 * modification, are permitted provided that the following conditions 00006 * are met: 00007 * 00008 * 1. Redistributions of source code must retain the above copyright 00009 * notice, this list of conditions and the following disclaimer. 00010 * 2. Redistributions in binary form must reproduce the above copyright 00011 * notice, this list of conditions and the following disclaimer in the 00012 * documentation and/or other materials provided with the distribution. 00013 * 3. Neither the name of the copyright holders nor the names of 00014 * contributors may be used to endorse or promote products derived 00015 * from this software without specific prior written permission. 00016 * 00017 * THIS SOFTWARE IS PROVIDED BY EGNITE SOFTWARE GMBH AND CONTRIBUTORS 00018 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 00019 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 00020 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL EGNITE 00021 * SOFTWARE GMBH OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 00022 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 00023 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS 00024 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 00025 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 00026 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF 00027 * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 00028 * SUCH DAMAGE. 00029 * 00030 * For additional information see http://www.ethernut.de/ 00031 * 00032 */ 00033 00034 /* 00035 * $Log: debug1.c,v $ 00036 * Revision 1.4 2006/10/08 16:48:07 haraldkipp 00037 * Documentation fixed 00038 * 00039 * Revision 1.3 2005/10/17 08:46:53 hwmaier 00040 * Setting baudrate function changed: For CPUs w/ 12 and 16 MHz xtal double rate mode is now used (only if set by NUT_CPU_FREQ) 00041 * 00042 * Revision 1.2 2005/08/02 17:46:45 haraldkipp 00043 * Major API documentation update. 00044 * 00045 * Revision 1.1 2005/07/26 18:02:27 haraldkipp 00046 * Moved from dev. 00047 * 00048 * Revision 1.3 2005/02/06 16:36:59 haraldkipp 00049 * Fixes ICCAVR V7 baudrate miscalculation. 00050 * 00051 * Revision 1.2 2004/02/25 16:19:10 haraldkipp 00052 * Support baudrate settings 00053 * 00054 * Revision 1.1.1.1 2003/05/09 14:40:37 haraldkipp 00055 * Initial using 3.2.1 00056 * 00057 * Revision 1.2 2003/05/06 18:29:49 harald 00058 * ICCAVR port 00059 * 00060 * Revision 1.1 2003/04/07 12:15:27 harald 00061 * First release 00062 * 00063 */ 00064 00065 #include <dev/debug.h> 00066 00067 #include <cfg/os.h> 00068 #include <sys/timer.h> 00069 #include <sys/device.h> 00070 #include <sys/file.h> 00071 00076 00077 #ifdef __AVR_ENHANCED__ 00078 00079 static NUTFILE dbgfile; 00080 00081 static int DebugIOCtl(NUTDEVICE * dev, int req, void *conf) 00082 { 00083 if(req == UART_SETSPEED) { 00084 #if defined(__AVR_ENHANCED__) && ((NUT_CPU_FREQ == 12000000) || (NUT_CPU_FREQ == 16000000)) 00085 /* On enhanced MCUs we use double rate mode, so we can use 115200 bps 00086 * with 12.0 and 16.0 crystals. 00087 */ 00088 sbi(UCSR1A, U2X1); 00089 outb(UBRR1L, (u_char) ((((2UL * NutGetCpuClock()) / (*((u_long *)conf) * 8UL)) + 1UL) / 2UL) - 1UL); 00090 #else 00091 outb(UBRR1L, (u_char) ((((2UL * NutGetCpuClock()) / (*((u_long *)conf) * 16UL)) + 1UL) / 2UL) - 1UL); 00092 #endif 00093 return 0; 00094 } 00095 return -1; 00096 } 00097 00098 static int DebugInit(NUTDEVICE * dev) 00099 { 00100 /* Note: Default baudrate has been set in nutinit.c */ 00101 UCSR1B = BV(RXEN) | BV(TXEN); 00102 return 0; 00103 } 00104 00105 static void DebugPut(char ch) 00106 { 00107 while((UCSR1A & BV(UDRE)) == 0); 00108 UDR1 = ch; 00109 if(ch == '\n') 00110 DebugPut('\r'); 00111 } 00112 00113 static int DebugWrite(NUTFILE * fp, CONST void *buffer, int len) 00114 { 00115 int c = len; 00116 CONST char *cp = buffer; 00117 00118 while(c--) 00119 DebugPut(*cp++); 00120 return len; 00121 } 00122 00123 static int DebugWrite_P(NUTFILE * fp, PGM_P buffer, int len) 00124 { 00125 int c = len; 00126 PGM_P cp = buffer; 00127 00128 while(c--) { 00129 DebugPut(PRG_RDB(cp)); 00130 cp++; 00131 } 00132 return len; 00133 } 00134 00135 static NUTFILE *DebugOpen(NUTDEVICE * dev, CONST char *name, int mode, int acc) 00136 { 00137 dbgfile.nf_next = 0; 00138 dbgfile.nf_dev = dev; 00139 dbgfile.nf_fcb = 0; 00140 00141 return &dbgfile; 00142 } 00143 00147 static int DebugClose(NUTFILE * fp) 00148 { 00149 return 0; 00150 } 00151 00155 NUTDEVICE devDebug1 = { 00156 0, 00157 {'u', 'a', 'r', 't', '1', 0, 0, 0, 0}, 00158 0, 00159 0, 00160 0, 00161 0, 00162 0, 00163 DebugInit, 00164 DebugIOCtl, 00165 0, 00166 DebugWrite, 00167 DebugWrite_P, 00168 DebugOpen, 00169 DebugClose, 00170 0 00171 }; 00172 00173 #endif 00174