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1 /*\r
2     FreeRTOS V7.1.0 - Copyright (C) 2011 Real Time Engineers Ltd.\r
3         \r
4 \r
5     ***************************************************************************\r
6      *                                                                       *\r
7      *    FreeRTOS tutorial books are available in pdf and paperback.        *\r
8      *    Complete, revised, and edited pdf reference manuals are also       *\r
9      *    available.                                                         *\r
10      *                                                                       *\r
11      *    Purchasing FreeRTOS documentation will not only help you, by       *\r
12      *    ensuring you get running as quickly as possible and with an        *\r
13      *    in-depth knowledge of how to use FreeRTOS, it will also help       *\r
14      *    the FreeRTOS project to continue with its mission of providing     *\r
15      *    professional grade, cross platform, de facto standard solutions    *\r
16      *    for microcontrollers - completely free of charge!                  *\r
17      *                                                                       *\r
18      *    >>> See http://www.FreeRTOS.org/Documentation for details. <<<     *\r
19      *                                                                       *\r
20      *    Thank you for using FreeRTOS, and thank you for your support!      *\r
21      *                                                                       *\r
22     ***************************************************************************\r
23 \r
24 \r
25     This file is part of the FreeRTOS distribution.\r
26 \r
27     FreeRTOS is free software; you can redistribute it and/or modify it under\r
28     the terms of the GNU General Public License (version 2) as published by the\r
29     Free Software Foundation AND MODIFIED BY the FreeRTOS exception.\r
30     >>>NOTE<<< The modification to the GPL is included to allow you to\r
31     distribute a combined work that includes FreeRTOS without being obliged to\r
32     provide the source code for proprietary components outside of the FreeRTOS\r
33     kernel.  FreeRTOS is distributed in the hope that it will be useful, but\r
34     WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY\r
35     or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for\r
36     more details. You should have received a copy of the GNU General Public\r
37     License and the FreeRTOS license exception along with FreeRTOS; if not it\r
38     can be viewed here: http://www.freertos.org/a00114.html and also obtained\r
39     by writing to Richard Barry, contact details for whom are available on the\r
40     FreeRTOS WEB site.\r
41 \r
42     1 tab == 4 spaces!\r
43 \r
44     http://www.FreeRTOS.org - Documentation, latest information, license and\r
45     contact details.\r
46 \r
47     http://www.SafeRTOS.com - A version that is certified for use in safety\r
48     critical systems.\r
49 \r
50     http://www.OpenRTOS.com - Commercial support, development, porting,\r
51     licensing and training services.\r
52 */\r
53 \r
54 /* Scheduler include files. */\r
55 #include "FreeRTOS.h"\r
56 #include "task.h"\r
57 \r
58 /* Demo file headers. */\r
59 #include "regtest.h"\r
60 \r
61 /*\r
62  * Test tasks that sets registers to known values, then checks to ensure the\r
63  * values remain as expected.  Test 1 and test 2 use different values.\r
64  */\r
65 static void prvRegisterCheck1( void *pvParameters );\r
66 static void prvRegisterCheck2( void *pvParameters );\r
67 \r
68 /* Set to a non zero value should an error be found. */\r
69 portBASE_TYPE xRegTestError = pdFALSE;\r
70 \r
71 /*-----------------------------------------------------------*/\r
72 \r
73 void vStartRegTestTasks( void )\r
74 {\r
75         xTaskCreate( prvRegisterCheck1, ( signed char * ) "Reg1", configMINIMAL_STACK_SIZE, NULL, tskIDLE_PRIORITY, NULL );\r
76         xTaskCreate( prvRegisterCheck2, ( signed char * ) "Reg2", configMINIMAL_STACK_SIZE, NULL, tskIDLE_PRIORITY, NULL );             \r
77 }\r
78 /*-----------------------------------------------------------*/\r
79 \r
80 portBASE_TYPE xAreRegTestTasksStillRunning( void )\r
81 {\r
82 portBASE_TYPE xReturn;\r
83 \r
84         /* If a register was found to contain an unexpected value then the\r
85         xRegTestError variable would have been set to a non zero value. */\r
86         if( xRegTestError == pdFALSE )\r
87         {\r
88                 xReturn = pdTRUE;\r
89         }\r
90         else\r
91         {\r
92                 xReturn = pdFALSE;\r
93         }\r
94         \r
95         return xReturn;\r
96 }\r
97 /*-----------------------------------------------------------*/\r
98 \r
99 static void prvRegisterCheck1( void *pvParameters )\r
100 {\r
101         ( void ) pvParameters;\r
102 \r
103         for( ;; )\r
104         {\r
105                 asm(    "LDI    r31,    5"              );              \r
106                 asm(    "MOV    r0,             r31"    );\r
107                 asm(    "LDI    r31,    6"              );\r
108                 asm(    "MOV    r1,             r31"    );\r
109                 asm(    "LDI    r31,    7"              );\r
110                 asm(    "MOV    r2,             r31"    );\r
111                 asm(    "LDI    r31,    8"              );\r
112                 asm(    "MOV    r3,             r31"    );\r
113                 asm(    "LDI    r31,    9"              );\r
114                 asm(    "MOV    r4,             r31"    );\r
115                 asm(    "LDI    r31,    10"             );\r
116                 asm(    "MOV    r5,             r31"    );\r
117                 asm(    "LDI    r31,    11"             );\r
118                 asm(    "MOV    r6,             r31"    );\r
119                 asm(    "LDI    r31,    12"             );\r
120                 asm(    "MOV    r7,             r31"    );\r
121                 asm(    "LDI    r31,    13"             );\r
122                 asm(    "MOV    r8,             r31"    );\r
123                 asm(    "LDI    r31,    14"             );\r
124                 asm(    "MOV    r9,             r31"    );\r
125                 asm(    "LDI    r31,    15"             );\r
126                 asm(    "MOV    r10,    r31"    );\r
127                 asm(    "LDI    r31,    16"             );\r
128                 asm(    "MOV    r11,    r31"    );\r
129                 asm(    "LDI    r31,    17"             );\r
130                 asm(    "MOV    r12,    r31"    );\r
131                 asm(    "LDI    r31,    18"             );\r
132                 asm(    "MOV    r13,    r31"    );\r
133                 asm(    "LDI    r31,    19"             );\r
134                 asm(    "MOV    r14,    r31"    );\r
135                 asm(    "LDI    r31,    20"             );\r
136                 asm(    "MOV    r15,    r31"    );\r
137                 asm(    "LDI    r16,    21"             );\r
138                 asm(    "LDI    r17,    22"             );\r
139                 asm(    "LDI    r18,    23"             );\r
140                 asm(    "LDI    r19,    24"             );\r
141                 asm(    "LDI    r20,    25"             );\r
142                 asm(    "LDI    r21,    26"             );\r
143                 asm(    "LDI    r22,    27"             );\r
144                 asm(    "LDI    r23,    28"             );\r
145                 asm(    "LDI    r24,    29"             );\r
146                 asm(    "LDI    r25,    30"             );\r
147                 asm(    "LDI    r26,    31"             );\r
148                 asm(    "LDI    r27,    32"             );\r
149                 asm(    "LDI    r30,    33"             );\r
150 \r
151                 asm(    "LDI    r31,    5"                      );\r
152                 asm(    "CPSE   r31,    r0"                     );\r
153                 asm(    "STS    xRegTestError, r0"      );\r
154                 asm(    "LDI    r31,    6"                      );\r
155                 asm(    "CPSE   r31,    r1"                     );\r
156                 asm(    "STS    xRegTestError, r0"      );\r
157                 asm(    "LDI    r31,    7"                      );\r
158                 asm(    "CPSE   r31,    r2"                     );\r
159                 asm(    "STS    xRegTestError, r0"      );\r
160                 asm(    "LDI    r31,    8"                      );\r
161                 asm(    "CPSE   r31,    r3"                     );\r
162                 asm(    "STS    xRegTestError, r0"      );\r
163                 asm(    "LDI    r31,    9"                      );\r
164                 asm(    "CPSE   r31,    r4"                     );\r
165                 asm(    "STS    xRegTestError, r0"      );\r
166                 asm(    "LDI    r31,    10"                     );\r
167                 asm(    "CPSE   r31,    r5"                     );\r
168                 asm(    "STS    xRegTestError, r0"      );\r
169                 asm(    "LDI    r31,    11"                     );\r
170                 asm(    "CPSE   r31,    r6"                     );\r
171                 asm(    "STS    xRegTestError, r0"      );\r
172                 asm(    "LDI    r31,    12"                     );\r
173                 asm(    "CPSE   r31,    r7"                     );\r
174                 asm(    "STS    xRegTestError, r0"      );\r
175                 asm(    "LDI    r31,    13"                     );\r
176                 asm(    "CPSE   r31,    r8"                     );\r
177                 asm(    "STS    xRegTestError, r0"      );\r
178                 asm(    "LDI    r31,    14"                     );\r
179                 asm(    "CPSE   r31,    r9"                     );\r
180                 asm(    "STS    xRegTestError, r0"      );\r
181                 asm(    "LDI    r31,    15"                     );\r
182                 asm(    "CPSE   r31,    r10"            );\r
183                 asm(    "STS    xRegTestError, r0"      );\r
184                 asm(    "LDI    r31,    16"                     );\r
185                 asm(    "CPSE   r31,    r11"            );\r
186                 asm(    "STS    xRegTestError, r0"      );\r
187                 asm(    "LDI    r31,    17"                     );\r
188                 asm(    "CPSE   r31,    r12"            );\r
189                 asm(    "STS    xRegTestError, r0"      );\r
190                 asm(    "LDI    r31,    18"                     );\r
191                 asm(    "CPSE   r31,    r13"            );\r
192                 asm(    "STS    xRegTestError, r0"      );\r
193                 asm(    "LDI    r31,    19"                     );\r
194                 asm(    "CPSE   r31,    r14"            );\r
195                 asm(    "STS    xRegTestError, r0"      );\r
196                 asm(    "LDI    r31,    20"                     );\r
197                 asm(    "CPSE   r31,    r15"            );\r
198                 asm(    "STS    xRegTestError, r0"      );\r
199                 asm(    "LDI    r31,    21"                     );\r
200                 asm(    "CPSE   r31,    r16"            );\r
201                 asm(    "STS    xRegTestError, r0"      );\r
202                 asm(    "LDI    r31,    22"                     );\r
203                 asm(    "CPSE   r31,    r17"            );\r
204                 asm(    "STS    xRegTestError, r0"      );\r
205                 asm(    "LDI    r31,    23"                     );\r
206                 asm(    "CPSE   r31,    r18"            );\r
207                 asm(    "STS    xRegTestError, r0"      );\r
208                 asm(    "LDI    r31,    24"                     );\r
209                 asm(    "CPSE   r31,    r19"            );\r
210                 asm(    "STS    xRegTestError, r0"      );\r
211                 asm(    "LDI    r31,    25"                     );\r
212                 asm(    "CPSE   r31,    r20"            );\r
213                 asm(    "STS    xRegTestError, r0"      );\r
214                 asm(    "LDI    r31,    26"                     );\r
215                 asm(    "CPSE   r31,    r21"            );\r
216                 asm(    "STS    xRegTestError, r0"      );\r
217                 asm(    "LDI    r31,    27"                     );\r
218                 asm(    "CPSE   r31,    r22"            );\r
219                 asm(    "STS    xRegTestError, r0"      );\r
220                 asm(    "LDI    r31,    28"                     );\r
221                 asm(    "CPSE   r31,    r23"            );\r
222                 asm(    "STS    xRegTestError, r0"      );\r
223                 asm(    "LDI    r31,    29"                     );\r
224                 asm(    "CPSE   r31,    r24"            );\r
225                 asm(    "STS    xRegTestError, r0"      );\r
226                 asm(    "LDI    r31,    30"                     );\r
227                 asm(    "CPSE   r31,    r25"            );\r
228                 asm(    "STS    xRegTestError, r0"      );\r
229                 asm(    "LDI    r31,    31"                     );\r
230                 asm(    "CPSE   r31,    r26"            );\r
231                 asm(    "STS    xRegTestError, r0"      );\r
232                 asm(    "LDI    r31,    32"                     );\r
233                 asm(    "CPSE   r31,    r27"            );\r
234                 asm(    "STS    xRegTestError, r0"      );\r
235                 asm(    "LDI    r31,    33"                     );\r
236                 asm(    "CPSE   r31,    r30"            );\r
237                 asm(    "STS    xRegTestError, r0"      );\r
238         }\r
239 }\r
240 /*-----------------------------------------------------------*/\r
241 \r
242 static void prvRegisterCheck2( void *pvParameters )\r
243 {\r
244         ( void ) pvParameters;\r
245 \r
246         for( ;; )\r
247         {\r
248                 asm(    "LDI    r31,    1"              );              \r
249                 asm(    "MOV    r0,             r31"    );\r
250                 asm(    "LDI    r31,    2"              );\r
251                 asm(    "MOV    r1,             r31"    );\r
252                 asm(    "LDI    r31,    3"              );\r
253                 asm(    "MOV    r2,             r31"    );\r
254                 asm(    "LDI    r31,    4"              );\r
255                 asm(    "MOV    r3,             r31"    );\r
256                 asm(    "LDI    r31,    5"              );\r
257                 asm(    "MOV    r4,             r31"    );\r
258                 asm(    "LDI    r31,    6"              );\r
259                 asm(    "MOV    r5,             r31"    );\r
260                 asm(    "LDI    r31,    7"              );\r
261                 asm(    "MOV    r6,             r31"    );\r
262                 asm(    "LDI    r31,    8"              );\r
263                 asm(    "MOV    r7,             r31"    );\r
264                 asm(    "LDI    r31,    9"              );\r
265                 asm(    "MOV    r8,             r31"    );\r
266                 asm(    "LDI    r31,    10"             );\r
267                 asm(    "MOV    r9,             r31"    );\r
268                 asm(    "LDI    r31,    11"             );\r
269                 asm(    "MOV    r10,    r31"    );\r
270                 asm(    "LDI    r31,    12"             );\r
271                 asm(    "MOV    r11,    r31"    );\r
272                 asm(    "LDI    r31,    13"             );\r
273                 asm(    "MOV    r12,    r31"    );\r
274                 asm(    "LDI    r31,    14"             );\r
275                 asm(    "MOV    r13,    r31"    );\r
276                 asm(    "LDI    r31,    15"             );\r
277                 asm(    "MOV    r14,    r31"    );\r
278                 asm(    "LDI    r31,    16"             );\r
279                 asm(    "MOV    r15,    r31"    );\r
280                 asm(    "LDI    r16,    17"             );\r
281                 asm(    "LDI    r17,    18"             );\r
282                 asm(    "LDI    r18,    19"             );\r
283                 asm(    "LDI    r19,    20"             );\r
284                 asm(    "LDI    r20,    21"             );\r
285                 asm(    "LDI    r21,    22"             );\r
286                 asm(    "LDI    r22,    23"             );\r
287                 asm(    "LDI    r23,    24"             );\r
288                 asm(    "LDI    r24,    25"             );\r
289                 asm(    "LDI    r25,    26"             );\r
290                 asm(    "LDI    r26,    27"             );\r
291                 asm(    "LDI    r27,    28"             );\r
292                 asm(    "LDI    r30,    29"             );\r
293 \r
294                 asm(    "LDI    r31,    1"                      );\r
295                 asm(    "CPSE   r31,    r0"                     );\r
296                 asm(    "STS    xRegTestError, r0"      );\r
297                 asm(    "LDI    r31,    2"                      );\r
298                 asm(    "CPSE   r31,    r1"                     );\r
299                 asm(    "STS    xRegTestError, r0"      );\r
300                 asm(    "LDI    r31,    3"                      );\r
301                 asm(    "CPSE   r31,    r2"                     );\r
302                 asm(    "STS    xRegTestError, r0"      );\r
303                 asm(    "LDI    r31,    4"                      );\r
304                 asm(    "CPSE   r31,    r3"                     );\r
305                 asm(    "STS    xRegTestError, r0"      );\r
306                 asm(    "LDI    r31,    5"                      );\r
307                 asm(    "CPSE   r31,    r4"                     );\r
308                 asm(    "STS    xRegTestError, r0"      );\r
309                 asm(    "LDI    r31,    6"                      );\r
310                 asm(    "CPSE   r31,    r5"                     );\r
311                 asm(    "STS    xRegTestError, r0"      );\r
312                 asm(    "LDI    r31,    7"                      );\r
313                 asm(    "CPSE   r31,    r6"                     );\r
314                 asm(    "STS    xRegTestError, r0"      );\r
315                 asm(    "LDI    r31,    8"                      );\r
316                 asm(    "CPSE   r31,    r7"                     );\r
317                 asm(    "STS    xRegTestError, r0"      );\r
318                 asm(    "LDI    r31,    9"                      );\r
319                 asm(    "CPSE   r31,    r8"                     );\r
320                 asm(    "STS    xRegTestError, r0"      );\r
321                 asm(    "LDI    r31,    10"                     );\r
322                 asm(    "CPSE   r31,    r9"                     );\r
323                 asm(    "STS    xRegTestError, r0"      );\r
324                 asm(    "LDI    r31,    11"                     );\r
325                 asm(    "CPSE   r31,    r10"            );\r
326                 asm(    "STS    xRegTestError, r0"      );\r
327                 asm(    "LDI    r31,    12"                     );\r
328                 asm(    "CPSE   r31,    r11"            );\r
329                 asm(    "STS    xRegTestError, r0"      );\r
330                 asm(    "LDI    r31,    13"                     );\r
331                 asm(    "CPSE   r31,    r12"            );\r
332                 asm(    "STS    xRegTestError, r0"      );\r
333                 asm(    "LDI    r31,    14"                     );\r
334                 asm(    "CPSE   r31,    r13"            );\r
335                 asm(    "STS    xRegTestError, r0"      );\r
336                 asm(    "LDI    r31,    15"                     );\r
337                 asm(    "CPSE   r31,    r14"            );\r
338                 asm(    "STS    xRegTestError, r0"      );\r
339                 asm(    "LDI    r31,    16"                     );\r
340                 asm(    "CPSE   r31,    r15"            );\r
341                 asm(    "STS    xRegTestError, r0"      );\r
342                 asm(    "LDI    r31,    17"                     );\r
343                 asm(    "CPSE   r31,    r16"            );\r
344                 asm(    "STS    xRegTestError, r0"      );\r
345                 asm(    "LDI    r31,    18"                     );\r
346                 asm(    "CPSE   r31,    r17"            );\r
347                 asm(    "STS    xRegTestError, r0"      );\r
348                 asm(    "LDI    r31,    19"                     );\r
349                 asm(    "CPSE   r31,    r18"            );\r
350                 asm(    "STS    xRegTestError, r0"      );\r
351                 asm(    "LDI    r31,    20"                     );\r
352                 asm(    "CPSE   r31,    r19"            );\r
353                 asm(    "STS    xRegTestError, r0"      );\r
354                 asm(    "LDI    r31,    21"                     );\r
355                 asm(    "CPSE   r31,    r20"            );\r
356                 asm(    "STS    xRegTestError, r0"      );\r
357                 asm(    "LDI    r31,    22"                     );\r
358                 asm(    "CPSE   r31,    r21"            );\r
359                 asm(    "STS    xRegTestError, r0"      );\r
360                 asm(    "LDI    r31,    23"                     );\r
361                 asm(    "CPSE   r31,    r22"            );\r
362                 asm(    "STS    xRegTestError, r0"      );\r
363                 asm(    "LDI    r31,    24"                     );\r
364                 asm(    "CPSE   r31,    r23"            );\r
365                 asm(    "STS    xRegTestError, r0"      );\r
366                 asm(    "LDI    r31,    25"                     );\r
367                 asm(    "CPSE   r31,    r24"            );\r
368                 asm(    "STS    xRegTestError, r0"      );\r
369                 asm(    "LDI    r31,    26"                     );\r
370                 asm(    "CPSE   r31,    r25"            );\r
371                 asm(    "STS    xRegTestError, r0"      );\r
372                 asm(    "LDI    r31,    27"                     );\r
373                 asm(    "CPSE   r31,    r26"            );\r
374                 asm(    "STS    xRegTestError, r0"      );\r
375                 asm(    "LDI    r31,    28"                     );\r
376                 asm(    "CPSE   r31,    r27"            );\r
377                 asm(    "STS    xRegTestError, r0"      );\r
378                 asm(    "LDI    r31,    29"                     );\r
379                 asm(    "CPSE   r31,    r30"            );\r
380                 asm(    "STS    xRegTestError, r0"      );\r
381         }\r
382 }\r
383 \r