T-Kernel Specification (1.B0.02)

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174 CHAPTER 4. T-KERNEL/OS FUNCTIONS tk stp cyc Stop Cyclic Handler [C Language Interface] ER ercd = tk_stp_cyc ( ID cycid ) ; [Parameters] ID cycid Cyclic handler ID [Return Parameters] ER ercd Error code [Error Codes] E OK E ID E NOEXS Normal completion Invalid ID number (cycid is invalid or cannot be used) Object does not exist (the cyclic handler designated in cycid does not exist) [Description] Deactivates a cyclic handler, putting it in inactive state. It the cyclic handler was already in inactive state, this system call has no effect (no operation). Copyright c○ 2002, 2003 by T-Engine Forum T-Kernel 1.B0.02
4.7. TIME MANAGEMENT FUNCTIONS 175 tk ref cyc Reference Cyclic Handler Status [C Language Interface] ER ercd = tk_ref_cyc ( ID cycid, T_RCYC *pk_rcyc ) ; [Parameters] ID cycid Cyclic handler ID T RCYC* pk rcyc Address of packet for returning status information [Return Parameters] ER ercd Error code pk rcyc detail: VP exinf Extended information RELTIM lfttim Time remaining until the next start time UINT cycstat Cyclic handler activation state (Other implementation-dependent parameters may be added beyond this point.) [Error Codes] E OK E ID E NOEXS E PAR Normal completion Invalid ID number (cycid is invalid or cannot be used) Object does not exist (the cyclic handler designated in cycid does not exist) Parameter error (the return parameter packet address cannot be used) [Description] References the status of the cyclic handler designated in cycid, passing in return parameters the cyclic handler activation state cycstat, the time remaining until the next start lfttim, and extended information exinf. The following information is returned in cycstat. cycstat:= (TCYC_STP | TCYC_STA) TCYC STP TCYC STA The cyclic handler is inactive The cyclic handler is active #define TCYC_STP 0x00 /* cyclic handler is inactive */ #define TCYC_STA 0x01 /* cyclic handler is active */ If the cyclic handler designated in cycid does not exist, error code E NOEXS is returned. Copyright c○ 2002, 2003 by T-Engine Forum T-Kernel 1.B0.02
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T-Kernel Specification T-Kernel 1.B
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Contents 1 T-Kernel Overview 1 1.1
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CONTENTS v tk set flg (Set Event Fl
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CONTENTS vii 5.2.2 Address Space Ch
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CONTENTS ix td cal que (Reference Q
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List of Figures 1.1 Position of T-K
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List of Tables 2.1 State Transition
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System Call Notation In the parts o
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Index of T-Kernel/OS System Calls T
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INDEX OF T-KERNEL/OS SYSTEM CALLS x
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Index of T-Kernel/SM Extended SVC L
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Index of T-Kernel/DS System Calls T
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Chapter 1 T-Kernel Overview 1.1 Pos
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1.2. SCALABILITY 3 • Middleware m
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Chapter 2 Concepts Underlying the T
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2.2. TASK STATES AND SCHEDULING RUL
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2.2. TASK STATES AND SCHEDULING RUL
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2.3. INTERRUPT HANDLING 11 preceden
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2.5. SYSTEM STATES 13 Transient sta
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2.7. MEMORY 15 which the upper and
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Chapter 3 Common T-Kernel Specifica
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3.2. SYSTEM CALLS 19 /* * Common co
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3.2. SYSTEM CALLS 21 Ordinarily a f
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3.3. HIGH-LEVEL LANGUAGE SUPPORT RO
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Chapter 4 T-Kernel/OS Functions Thi
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4.1. TASK MANAGEMENT FUNCTIONS 27 t
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4.2. TASK-DEPENDENT SYNCHRONIZATION
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4.3. TASK EXCEPTION HANDLING FUNCTI
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4.4. SYNCHRONIZATION AND COMMUNICAT
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5.2. ADDRESS SPACE MANAGEMENT FUNCT
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5.3. DEVICE MANAGEMENT FUNCTIONS 22
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5.4. INTERRUPT MANAGEMENT FUNCTIONS
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5.5. IO PORT ACCESS SUPPORT FUNCTIO
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5.7. SYSTEM CONFIGURATION INFORMATI
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5.7. SYSTEM CONFIGURATION INFORMATI
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5.8. SUBSYSTEM AND DEVICE DRIVER ST
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260 CHAPTER 6. T-KERNEL/DS FUNCTION
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284 CHAPTER 7. REFERENCE INT tevptn
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286 CHAPTER 7. REFERENCE ER ercd =
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288 CHAPTER 7. REFERENCE INT ct = t
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290 CHAPTER 7. REFERENCE E OACV ERC
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T-Kernel Specification (1.B0.02)

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