Renesas M3T-MR100 Uživatelský manuál Strana 22
- Strana / 304
- Tabulka s obsahem
- KNIHY
Hodnocené. / 5. Na základě hodnocení zákazníků
- 8 -
Key input
microcomputer
Remote control
microcomputer
LED illumination
microcomputer
Arbiter
microcomputer
Volume control
microcomputer
Monitor
microcomputer
Mechanical
control
microcom
p
uter
Figure 3.2 Microcomputer-based System Example(Audio Equipment)
Using independent microcomputers for various functions as indicated in the above example offers the following advan-
tages.
1. Individual programs are small so that program development is easy.
2. It is very easy to use previously developed software.
3. Completely independent programs are provided for various functions so that program devel-
opment can easily be conducted by a number of engineers.
On the other hand, there are the following disadvantages.
1. The number of parts used increases, thereby raising the product cost.
2. Hardware design is complicated.
3. Product physical size is enlarged.
Therefore, if you employ the real-time OS in which a number of programs to be operated by a number of microcomputers
are placed under software control of one microcomputer, making it appear that the programs run on separate microcomput-
ers, you can obviate all the above disadvantages while retaining the above-mentioned advantages.
Figure 3.3 shows an example system that will be obtained if the real-time OS is incorporated in the system indicated in
Figure 3.2.
- M3T-MR100/4 V.1.00 1
- • Release Note 3
- • Users Manual (PDF file) 3
- Contents 5
- List of Figures 10
- List of Tables 13
- 2. General Information 17
- 2.3 MR100 Features 20
- 3. Introduction to Kernel 21
- Key input 23
- Monitor 24
- Register 26
- Memory map 26
- Register stored 27
- Register not stored 27
- 3.2 Service Call 28
- 3.3 Object 34
- 3.4 Task 35
- DORMANT 36
- SUSPENDED 36
- Priority 39
- Called the task context 41
- 3.5 System States 42
- 1. Interrupt Handler 42
- 2. Cyclic Handler 42
- 3. Alarm Handler 42
- 0 1 2 3 4 5 6 7 45
- 3.7 Stacks 48
- • User Stack 48
- • System Stack 48
- 4. Kernel 49
- 4.1.2 Module Overview 50
- Startup request count > 0 51
- 0 0 1 2 1 53
- Number of 54
- • Delay task (dly_tsk) 56
- Returned after use 57
- WAIT state 58
- Data Data 61
- Message Message 62
- Message 63
- • Processing speed 66
- • Memory usage efficiency 66
- • Ease of configuration 66
- • Set System Time (set_tim) 69
- Move the end of the queue 72
- Save Registers 73
- Task Selection 73
- 5. Service call reffernce 77
- No. Item Content 98
- - 102 116
- - 105 119
- - 107 121
- - 110 124
- - 112 126
- - 115 129
- - 117 131
- - 121 135
- - 124 138
- - 126 140
- - 132 146
- - 134 148
- - 138 152
- - 140 154
- (handler only) 155
- - 142 156
- - 147 161
- - 149 163
- - 152 166
- - 154 168
- - 158 172
- - 161 175
- - 164 178
- - 167 181
- - 173 187
- - 176 190
- - 190 204
- - 193 207
- - 198 212
- - 200 214
- - 202 216
- Overview 219
- - 206 220
- Figure 6.2 Program Example 222
- 6.2.4 System generation 223
- 6.2.5 Writing ROM 224
- 7. Detailed Applications 225
- - 214 228
- 7.2.1 Writing Task 229
- - 217 231
- For examples: 231
- - 219 233
- - 220 234
- - 221 235
- - 222 236
- 7.4 Memory Allocation 238
- • asm_sec.inc 238
- • c_sec.inc 238
- 8. Using Configurator 241
- Symbol 242
- MPU clock 245
- ID No 251
- ID name 251
- Number of data queues 252
- Select message queue 254
- Maximum message priority 254
- ID Name 256
- Section name 256
- Message buffer size 256
- Maximum message size 256
- Start address 259
- Extended information 259
- Vector No 260
- 8.2.1 Configurator Overview 268
- Configuration file name 270
- Error messages 271
- Warning messages 273
- 9.2 Program Source Listing 275
- 9.3 Configuration File 276
- XXX_XXX() 278
- System Stack 279
- Stack Section 279
- Sections used in MR100 280
- User stack size = 280
- Stack growing direction 281
- Σβi( γ) 282
- The necessary system stack 283
- Interrupt 283
- = register to be used 285
- 10.2 Necessary Stack Size 286
- 11. Note 289
- 17. Precautions 290
- 12. Appendix 293
- - 283 297
- - 284 298
- - 285 299
- - 288 302
- M3T-MR100/4 304
- User's Manual 304
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