1 /*
2 * Copyright (c) 2018, The OpenThread Authors.
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are met:
7 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
12 * 3. Neither the name of the copyright holder nor the
13 * names of its contributors may be used to endorse or promote products
14 * derived from this software without specific prior written permission.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
17 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
20 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
23 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
24 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
25 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
26 * POSSIBILITY OF SUCH DAMAGE.
27 */
28
29 /**
30 * @file
31 * This file implements the OpenThread platform abstraction for logging.
32 *
33 */
34
35 #include <openthread-core-config.h>
36 #include <openthread/config.h>
37
38 #include <utils/code_utils.h>
39 #include <openthread/platform/alarm-milli.h>
40 #include <openthread/platform/logging.h>
41
42 #include "SEGGER_RTT.h"
43 #include "logging_rtt.h"
44
45 #if (OPENTHREAD_CONFIG_LOG_OUTPUT == OPENTHREAD_CONFIG_LOG_OUTPUT_PLATFORM_DEFINED)
46 #if (LOG_RTT_COLOR_ENABLE == 1)
47 #define RTT_COLOR_CODE_DEFAULT "\x1B[0m"
48 #define RTT_COLOR_CODE_RED "\x1B[1;31m"
49 #define RTT_COLOR_CODE_GREEN "\x1B[1;32m"
50 #define RTT_COLOR_CODE_YELLOW "\x1B[1;33m"
51 #define RTT_COLOR_CODE_CYAN "\x1B[1;36m"
52 #else // LOG_RTT_COLOR_ENABLE == 1
53 #define RTT_COLOR_CODE_DEFAULT ""
54 #define RTT_COLOR_CODE_RED ""
55 #define RTT_COLOR_CODE_GREEN ""
56 #define RTT_COLOR_CODE_YELLOW ""
57 #define RTT_COLOR_CODE_CYAN ""
58 #endif // LOG_RTT_COLOR_ENABLE == 1
59
60 static bool sLogInitialized = false;
61
62 #if LOG_RTT_BUFFER_INDEX != 0
63 static uint8_t sLogBuffer[LOG_RTT_BUFFER_SIZE];
64 #endif
65
66 /**
67 * Function for getting color of a given level log.
68 *
69 * @param[in] aLogLevel The log level.
70 *
71 * @returns String with a log level color value.
72 */
levelToString(otLogLevel aLogLevel)73 static inline const char *levelToString(otLogLevel aLogLevel)
74 {
75 switch (aLogLevel)
76 {
77 case OT_LOG_LEVEL_CRIT:
78 return RTT_COLOR_CODE_RED;
79
80 case OT_LOG_LEVEL_WARN:
81 return RTT_COLOR_CODE_YELLOW;
82
83 case OT_LOG_LEVEL_INFO:
84 return RTT_COLOR_CODE_GREEN;
85
86 case OT_LOG_LEVEL_DEBG:
87 default:
88 return RTT_COLOR_CODE_DEFAULT;
89 }
90 }
91
92 #if (LOG_TIMESTAMP_ENABLE == 1)
93 /**
94 * Function for printing actual timestamp.
95 *
96 * @param[in,out] aLogString Pointer to the log buffer.
97 * @param[in] aMaxSize Maximum size of the log buffer.
98 *
99 * @returns Number of bytes successfully written to the log buffer.
100 */
logTimestamp(char * aLogString,uint16_t aMaxSize)101 static inline int logTimestamp(char *aLogString, uint16_t aMaxSize)
102 {
103 long unsigned int now = otPlatAlarmMilliGetNow();
104 return snprintf(aLogString, (size_t)aMaxSize, "%s[%010lu]", RTT_COLOR_CODE_CYAN, now);
105 }
106 #endif
107
108 /**
109 * Function for printing log level.
110 *
111 * @param[in,out] aLogString Pointer to log buffer.
112 * @param[in] aMaxSize Maximum size of log buffer.
113 * @param[in] aLogLevel Log level.
114 *
115 * @returns Number of bytes successfully written to the log buffer.
116 */
logLevel(char * aLogString,uint16_t aMaxSize,otLogLevel aLogLevel)117 static inline int logLevel(char *aLogString, uint16_t aMaxSize, otLogLevel aLogLevel)
118 {
119 return snprintf(aLogString, (size_t)aMaxSize, "%s ", levelToString(aLogLevel));
120 }
121
utilsLogRttInit(void)122 void utilsLogRttInit(void)
123 {
124 #if LOG_RTT_BUFFER_INDEX != 0
125 int res = SEGGER_RTT_ConfigUpBuffer(LOG_RTT_BUFFER_INDEX, LOG_RTT_BUFFER_NAME, sLogBuffer, LOG_RTT_BUFFER_SIZE,
126 SEGGER_RTT_MODE_NO_BLOCK_TRIM);
127 #else
128 int res = SEGGER_RTT_SetFlagsUpBuffer(LOG_RTT_BUFFER_INDEX, SEGGER_RTT_MODE_NO_BLOCK_TRIM);
129 #endif
130
131 otEXPECT(res >= 0);
132
133 sLogInitialized = true;
134
135 exit:
136 return;
137 }
138
utilsLogRttDeinit(void)139 void utilsLogRttDeinit(void) { sLogInitialized = false; }
140
utilsLogRttOutput(otLogLevel aLogLevel,otLogRegion aLogRegion,const char * aFormat,va_list ap)141 void utilsLogRttOutput(otLogLevel aLogLevel, otLogRegion aLogRegion, const char *aFormat, va_list ap)
142 {
143 (void)aLogRegion;
144
145 uint16_t length = 0;
146 int charsWritten;
147 char logString[LOG_PARSE_BUFFER_SIZE + 1];
148
149 otEXPECT(sLogInitialized == true);
150
151 #if (LOG_TIMESTAMP_ENABLE == 1)
152 length += logTimestamp(logString, LOG_PARSE_BUFFER_SIZE);
153 #endif
154
155 // Add level information.
156 length += logLevel(&logString[length], (LOG_PARSE_BUFFER_SIZE - length), aLogLevel);
157
158 charsWritten = vsnprintf(&logString[length], (size_t)(LOG_PARSE_BUFFER_SIZE - length), aFormat, ap);
159 otEXPECT(charsWritten >= 0);
160 length += charsWritten;
161
162 if (length > LOG_PARSE_BUFFER_SIZE)
163 {
164 length = LOG_PARSE_BUFFER_SIZE;
165 }
166
167 logString[length++] = '\n';
168
169 // Write user log to the RTT memory block.
170 SEGGER_RTT_WriteNoLock(LOG_RTT_BUFFER_INDEX, logString, length);
171
172 exit:
173 return;
174 }
175 #endif // (OPENTHREAD_CONFIG_LOG_OUTPUT == OPENTHREAD_CONFIG_LOG_OUTPUT_PLATFORM_DEFINED)
176
