CompuLab SBC-X270 Manual do Utilizador descarregar pdf (Página 5)

SCIOPTA - Real-Time Kernel

User’s Manual Manual Version 4.1 III

SCIOPTA - Real-Time Kernel

Table of Contents

5.13.3 Get Process IDs of Dynamic Processes ........................................................................................... 5-13

5.14 Process Variables ............................................................................................................................. 5-14

5.15 Process Observation......................................................................................................................... 5-15

5.16 Process System Calls........................................................................................................................ 5-16

6. Messages ................................................................................................................. 6-1

6.1 Introduction........................................................................................................................................ 6-1

6.2 Message Structure .............................................................................................................................. 6-1

6.3 Message Sizes .................................................................................................................................... 6-2

6.3.1 Example.............................................................................................................................................. 6-2

6.4 Message Pool ..................................................................................................................................... 6-2

6.5 Message Passing................................................................................................................................. 6-3

6.6 Message Declaration .......................................................................................................................... 6-4

6.6.1 Message Number................................................................................................................................ 6-4

6.6.1.1 Description......................................................................................................................................... 6-4

6.6.1.2 Syntax................................................................................................................................................. 6-4

6.6.1.3 Parameter............................................................................................................................................ 6-4

6.6.2 Message Structure .............................................................................................................................. 6-5

6.6.2.1 Description......................................................................................................................................... 6-5

6.6.2.2 Syntax................................................................................................................................................. 6-5

6.6.2.3 Parameter............................................................................................................................................ 6-5

6.6.3 Message Union................................................................................................................................... 6-6

6.6.3.1 Description......................................................................................................................................... 6-6

6.6.3.2 Syntax................................................................................................................................................. 6-6

6.6.3.3 Parameter............................................................................................................................................ 6-6

6.7 Message Number (ID) organization................................................................................................... 6-7

6.7.1 Global Message Number Defines File............................................................................................... 6-7

6.8 Example.............................................................................................................................................. 6-7

6.9 Messages and Modules ...................................................................................................................... 6-8

6.10 Message Passing and Scheduling....................................................................................................... 6-9

6.11 Message System Calls...................................................................................................................... 6-10

7. Pools........................................................................................................................ 7-1

7.1 Introduction........................................................................................................................................ 7-1

7.2 Message Pool size .............................................................................................................................. 7-1

7.3 Pool Message Buffer Memory Manager............................................................................................ 7-2

7.3.1 Example.............................................................................................................................................. 7-2

7.3.2 Message Administration Block.......................................................................................................... 7-2

7.4 Creating Pools.................................................................................................................................... 7-3

7.4.1 Static Pool Creation............................................................................................................................ 7-3

7.4.2 Dynamic Pool Creation...................................................................................................................... 7-3

7.5 Pool System Calls .............................................................................................................................. 7-4

8. SCIOPTA Trigger ................................................................................................. 8-1

8.1 Description ......................................................................................................................................... 8-1

8.2 Using SCIOPTA Trigger.................................................................................................................... 8-1

8.3 Trigger Example................................................................................................................................. 8-2

8.4 Trigger System Calls.......................................................................................................................... 8-3

9. Time Management................................................................................................. 9-1

9.1 Introduction........................................................................................................................................ 9-1

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