systemview  1.3.1
systemview
SEGGER_RTT.h
1 /*********************************************************************
2 * SEGGER Microcontroller GmbH & Co. KG *
3 * The Embedded Experts *
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10 **********************************************************************
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12 * SEGGER SystemView * Real-time application analysis *
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19 * to or modify the source code of this software in order to stay *
20 * compatible with the RTT protocol and J-Link. *
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55 * SystemView version: V2.52a *
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57 **********************************************************************
58 ---------------------------END-OF-HEADER------------------------------
59 File : SEGGER_RTT.h
60 Purpose : Implementation of SEGGER real-time transfer which allows
61  real-time communication on targets which support debugger
62  memory accesses while the CPU is running.
63 Revision: $Rev: 6849 $
64 ----------------------------------------------------------------------
65 */
66 
67 #ifndef SEGGER_RTT_H
68 #define SEGGER_RTT_H
69 
70 #include "SEGGER_RTT_configuration.h"
71 
72 /*********************************************************************
73 *
74 * Defines, fixed
75 *
76 **********************************************************************
77 */
78 
79 /*********************************************************************
80 *
81 * Types
82 *
83 **********************************************************************
84 */
85 
86 //
87 // Description for a circular buffer (also called "ring buffer")
88 // which is used as up-buffer (T->H)
89 //
90 typedef struct {
91  const char* sName; // Optional name. Standard names so far are: "Terminal", "SysView", "J-Scope_t4i4"
92  char* pBuffer; // Pointer to start of buffer
93  unsigned SizeOfBuffer; // Buffer size in bytes. Note that one byte is lost, as this implementation does not fill up the buffer in order to avoid the problem of being unable to distinguish between full and empty.
94  unsigned WrOff; // Position of next item to be written by either target.
95  volatile unsigned RdOff; // Position of next item to be read by host. Must be volatile since it may be modified by host.
96  unsigned Flags; // Contains configuration flags
98 
99 //
100 // Description for a circular buffer (also called "ring buffer")
101 // which is used as down-buffer (H->T)
102 //
103 typedef struct {
104  const char* sName; // Optional name. Standard names so far are: "Terminal", "SysView", "J-Scope_t4i4"
105  char* pBuffer; // Pointer to start of buffer
106  unsigned SizeOfBuffer; // Buffer size in bytes. Note that one byte is lost, as this implementation does not fill up the buffer in order to avoid the problem of being unable to distinguish between full and empty.
107  volatile unsigned WrOff; // Position of next item to be written by host. Must be volatile since it may be modified by host.
108  unsigned RdOff; // Position of next item to be read by target (down-buffer).
109  unsigned Flags; // Contains configuration flags
111 
112 //
113 // RTT control block which describes the number of buffers available
114 // as well as the configuration for each buffer
115 //
116 //
117 typedef struct {
118  char acID[16]; // Initialized to "SEGGER RTT"
119  int MaxNumUpBuffers; // Initialized to SEGGER_RTT_MAX_NUM_UP_BUFFERS (type. 2)
120  int MaxNumDownBuffers; // Initialized to SEGGER_RTT_MAX_NUM_DOWN_BUFFERS (type. 2)
121  SEGGER_RTT_BUFFER_UP aUp[SEGGER_RTT_MAX_NUM_UP_BUFFERS]; // Up buffers, transferring information up from target via debug probe to host
122  SEGGER_RTT_BUFFER_DOWN aDown[SEGGER_RTT_MAX_NUM_DOWN_BUFFERS]; // Down buffers, transferring information down from host via debug probe to target
123 } SEGGER_RTT_CB;
124 
125 /*********************************************************************
126 *
127 * Global data
128 *
129 **********************************************************************
130 */
131 extern SEGGER_RTT_CB _SEGGER_RTT;
132 
133 /*********************************************************************
134 *
135 * RTT API functions
136 *
137 **********************************************************************
138 */
139 #ifdef __cplusplus
140  extern "C" {
141 #endif
142 int SEGGER_RTT_AllocDownBuffer (const char* sName, void* pBuffer, unsigned BufferSize, unsigned Flags);
143 int SEGGER_RTT_AllocUpBuffer (const char* sName, void* pBuffer, unsigned BufferSize, unsigned Flags);
144 int SEGGER_RTT_ConfigUpBuffer (unsigned BufferIndex, const char* sName, void* pBuffer, unsigned BufferSize, unsigned Flags);
145 int SEGGER_RTT_ConfigDownBuffer (unsigned BufferIndex, const char* sName, void* pBuffer, unsigned BufferSize, unsigned Flags);
146 int SEGGER_RTT_GetKey (void);
147 unsigned SEGGER_RTT_HasData (unsigned BufferIndex);
148 int SEGGER_RTT_HasKey (void);
149 void SEGGER_RTT_Init (void);
150 unsigned SEGGER_RTT_Read (unsigned BufferIndex, void* pBuffer, unsigned BufferSize);
151 unsigned SEGGER_RTT_ReadNoLock (unsigned BufferIndex, void* pData, unsigned BufferSize);
152 int SEGGER_RTT_SetNameDownBuffer (unsigned BufferIndex, const char* sName);
153 int SEGGER_RTT_SetNameUpBuffer (unsigned BufferIndex, const char* sName);
154 int SEGGER_RTT_SetFlagsDownBuffer (unsigned BufferIndex, unsigned Flags);
155 int SEGGER_RTT_SetFlagsUpBuffer (unsigned BufferIndex, unsigned Flags);
156 int SEGGER_RTT_WaitKey (void);
157 unsigned SEGGER_RTT_Write (unsigned BufferIndex, const void* pBuffer, unsigned NumBytes);
158 unsigned SEGGER_RTT_WriteNoLock (unsigned BufferIndex, const void* pBuffer, unsigned NumBytes);
159 unsigned SEGGER_RTT_WriteSkipNoLock (unsigned BufferIndex, const void* pBuffer, unsigned NumBytes);
160 unsigned SEGGER_RTT_WriteString (unsigned BufferIndex, const char* s);
161 void SEGGER_RTT_WriteWithOverwriteNoLock(unsigned BufferIndex, const void* pBuffer, unsigned NumBytes);
162 unsigned SEGGER_RTT_PutChar (unsigned BufferIndex, char c);
163 unsigned SEGGER_RTT_PutCharSkip (unsigned BufferIndex, char c);
164 unsigned SEGGER_RTT_PutCharSkipNoLock (unsigned BufferIndex, char c);
165 //
166 // Function macro for performance optimization
167 //
168 #define SEGGER_RTT_HASDATA(n) (_SEGGER_RTT.aDown[n].WrOff - _SEGGER_RTT.aDown[n].RdOff)
169 
170 /*********************************************************************
171 *
172 * RTT "Terminal" API functions
173 *
174 **********************************************************************
175 */
176 int SEGGER_RTT_SetTerminal (char TerminalId);
177 int SEGGER_RTT_TerminalOut (char TerminalId, const char* s);
178 
179 /*********************************************************************
180 *
181 * RTT printf functions (require SEGGER_RTT_printf.c)
182 *
183 **********************************************************************
184 */
185 int SEGGER_RTT_printf(unsigned BufferIndex, const char * sFormat, ...);
186 #ifdef __cplusplus
187  }
188 #endif
189 
190 /*********************************************************************
191 *
192 * Defines
193 *
194 **********************************************************************
195 */
196 
197 //
198 // Operating modes. Define behavior if buffer is full (not enough space for entire message)
199 //
200 #define SEGGER_RTT_MODE_NO_BLOCK_SKIP (0U) // Skip. Do not block, output nothing. (Default)
201 #define SEGGER_RTT_MODE_NO_BLOCK_TRIM (1U) // Trim: Do not block, output as much as fits.
202 #define SEGGER_RTT_MODE_BLOCK_IF_FIFO_FULL (2U) // Block: Wait until there is space in the buffer.
203 #define SEGGER_RTT_MODE_MASK (3U)
204 
205 //
206 // Control sequences, based on ANSI.
207 // Can be used to control color, and clear the screen
208 //
209 #define RTT_CTRL_RESET "" // Reset to default colors
210 #define RTT_CTRL_CLEAR "" // Clear screen, reposition cursor to top left
211 
212 #define RTT_CTRL_TEXT_BLACK ""
213 #define RTT_CTRL_TEXT_RED ""
214 #define RTT_CTRL_TEXT_GREEN ""
215 #define RTT_CTRL_TEXT_YELLOW ""
216 #define RTT_CTRL_TEXT_BLUE ""
217 #define RTT_CTRL_TEXT_MAGENTA ""
218 #define RTT_CTRL_TEXT_CYAN ""
219 #define RTT_CTRL_TEXT_WHITE ""
220 
221 #define RTT_CTRL_TEXT_BRIGHT_BLACK ""
222 #define RTT_CTRL_TEXT_BRIGHT_RED ""
223 #define RTT_CTRL_TEXT_BRIGHT_GREEN ""
224 #define RTT_CTRL_TEXT_BRIGHT_YELLOW ""
225 #define RTT_CTRL_TEXT_BRIGHT_BLUE ""
226 #define RTT_CTRL_TEXT_BRIGHT_MAGENTA ""
227 #define RTT_CTRL_TEXT_BRIGHT_CYAN ""
228 #define RTT_CTRL_TEXT_BRIGHT_WHITE ""
229 
230 #define RTT_CTRL_BG_BLACK ""
231 #define RTT_CTRL_BG_RED ""
232 #define RTT_CTRL_BG_GREEN ""
233 #define RTT_CTRL_BG_YELLOW ""
234 #define RTT_CTRL_BG_BLUE ""
235 #define RTT_CTRL_BG_MAGENTA ""
236 #define RTT_CTRL_BG_CYAN ""
237 #define RTT_CTRL_BG_WHITE ""
238 
239 #define RTT_CTRL_BG_BRIGHT_BLACK ""
240 #define RTT_CTRL_BG_BRIGHT_RED ""
241 #define RTT_CTRL_BG_BRIGHT_GREEN ""
242 #define RTT_CTRL_BG_BRIGHT_YELLOW ""
243 #define RTT_CTRL_BG_BRIGHT_BLUE ""
244 #define RTT_CTRL_BG_BRIGHT_MAGENTA ""
245 #define RTT_CTRL_BG_BRIGHT_CYAN ""
246 #define RTT_CTRL_BG_BRIGHT_WHITE ""
247 
248 
249 #endif
250 
251 /*************************** End of file ****************************/