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1 /* Name: oddebug.h
2 * Project: AVR library
3 * Author: Christian Starkjohann
4 * Creation Date: 2005-01-16
5 * Tabsize: 4
6 * Copyright: (c) 2005 by OBJECTIVE DEVELOPMENT Software GmbH
7 * License: GNU GPL v2 (see License.txt), GNU GPL v3 or proprietary (CommercialLicense.txt)
8 * This Revision: $Id: oddebug.h 692 2008-11-07 15:07:40Z cs $
9 */
10
11 #ifndef __oddebug_h_included__
12 #define __oddebug_h_included__
13
14 /*
15 General Description:
16 This module implements a function for debug logs on the serial line of the
17 AVR microcontroller. Debugging can be configured with the define
18 'DEBUG_LEVEL'. If this macro is not defined or defined to 0, all debugging
19 calls are no-ops. If it is 1, DBG1 logs will appear, but not DBG2. If it is
20 2, DBG1 and DBG2 logs will be printed.
21
22 A debug log consists of a label ('prefix') to indicate which debug log created
23 the output and a memory block to dump in hex ('data' and 'len').
24 */
25
26
27 #ifndef F_CPU
28 # define F_CPU 12000000 /* 12 MHz */
29 #endif
30
31 /* make sure we have the UART defines: */
32 #include "usbportability.h"
33
34 #ifndef uchar
35 # define uchar unsigned char
36 #endif
37
38 #if DEBUG_LEVEL > 0 && !(defined TXEN || defined TXEN0) /* no UART in device */
39 # warning "Debugging disabled because device has no UART"
40 # undef DEBUG_LEVEL
41 #endif
42
43 #ifndef DEBUG_LEVEL
44 # define DEBUG_LEVEL 0
45 #endif
46
47 /* ------------------------------------------------------------------------- */
48
49 #if DEBUG_LEVEL > 0
50 # define DBG1(prefix, data, len) odDebug(prefix, data, len)
51 #else
52 # define DBG1(prefix, data, len)
53 #endif
54
55 #if DEBUG_LEVEL > 1
56 # define DBG2(prefix, data, len) odDebug(prefix, data, len)
57 #else
58 # define DBG2(prefix, data, len)
59 #endif
60
61 /* ------------------------------------------------------------------------- */
62
63 #if DEBUG_LEVEL > 0
64 extern void odDebug(uchar prefix, uchar *data, uchar len);
65
66 /* Try to find our control registers; ATMEL likes to rename these */
67
68 #if defined UBRR
69 # define ODDBG_UBRR UBRR
70 #elif defined UBRRL
71 # define ODDBG_UBRR UBRRL
72 #elif defined UBRR0
73 # define ODDBG_UBRR UBRR0
74 #elif defined UBRR0L
75 # define ODDBG_UBRR UBRR0L
76 #endif
77
78 #if defined UCR
79 # define ODDBG_UCR UCR
80 #elif defined UCSRB
81 # define ODDBG_UCR UCSRB
82 #elif defined UCSR0B
83 # define ODDBG_UCR UCSR0B
84 #endif
85
86 #if defined TXEN
87 # define ODDBG_TXEN TXEN
88 #else
89 # define ODDBG_TXEN TXEN0
90 #endif
91
92 #if defined USR
93 # define ODDBG_USR USR
94 #elif defined UCSRA
95 # define ODDBG_USR UCSRA
96 #elif defined UCSR0A
97 # define ODDBG_USR UCSR0A
98 #endif
99
100 #if defined UDRE
101 # define ODDBG_UDRE UDRE
102 #else
103 # define ODDBG_UDRE UDRE0
104 #endif
105
106 #if defined UDR
107 # define ODDBG_UDR UDR
108 #elif defined UDR0
109 # define ODDBG_UDR UDR0
110 #endif
111
112 static inline void odDebugInit(void)
113 {
114 ODDBG_UCR |= (1<<ODDBG_TXEN);
115 ODDBG_UBRR = F_CPU / (19200 * 16L) - 1;
116 }
117 #else
118 # define odDebugInit()
119 #endif
120
121 /* ------------------------------------------------------------------------- */
122
123 #endif /* __oddebug_h_included__ */
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