CooCox CoOS User's Guide

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Descriptions: To wait the semaphore. Parameters: [in] id the designated semaphore ID [in] timeout Returns: E_CALL, overtime time,0 means waiting indefinitely E_INVALID_ID, E_TIMEOUT, E_OK, be called in the interrupt service program the semaphore ID that was incomed is invalid time is out for waiting resources to obtain the resources successfully 84
Example usage: #include "CCRTOS.h" OS_EventID semaphore;; void TaskN (void *pdata) { StatusType result; ... /* Pend a semaphore, Time out: 20 */ result = CoPendSem (semaphore, 20); if (result != E_OK) { if (result == E_INVALID_ID) { printf("Invalid event ID !\n"); } else if (result == E_CALL) { printf("Error call in ISR !\n"); } else if (result == E_TIMEOUT) { printf("Semaphore was not received within the specified timeout time !\n"); } } else { … /* Process semaphore here */ … } ... } Note: 1)This function runs a task sheduling while waiting and give the system execution time to the highest priority task. 2)The number of the semaphore resources substract 1 after getting the resources successfully. 3)The function cann’t be used in the interrupt service program. 85
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CooCox CoOS User's Guide Revision 1
Page 3 and 4:
1 OverView 1.1 About CooCox CoOS Co
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1.2 CooCox CoOS getting started Thi
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1.2.3 Write application code Open '
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void taskB (void* pdata) { for (;;)
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2 Task Management 2.1 Task During O
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TASK_WAITTING CoDelTask() Set event
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stkPtr: prio: state: taskID: A poin
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2.4 Task Ready List CooCox CoOS lin
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Code 4 Task with a higher priority
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2.7 Interrupts In CooCox CoOS, the
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Code 1 System tick interrupt handli
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3.3 Software Timer Software timer i
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4 Memory Management 4.1 Static Memo
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Assigned memory block list 50 100 2
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while allocate the memory. To all t
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4.3 Stack Overflow Check Stack Over
Page 35 and 36: Code 2 The use of the semaphore voi
Page 37 and 38: Code 3 The use of the mutex section
Page 39 and 40: Code5 Wait for multiple flags void
Page 41 and 42: You can create a mailbox by calling
Page 43 and 44: 6 API Reference 6.1 System Manageme
Page 45 and 46: 6.1.3 CoEnterISR() Function Prototy
Page 47 and 48: tasks so as to protect the critical
Page 49 and 50: 6.2 Task Management 6.2.1 CoCreateT
Page 51 and 52: Function Prototype: OS_TID CoCreate
Page 53 and 54: void CoExitTask(void); Description:
Page 55 and 56: #include "CCRTOS.h" void TaskN (voi
Page 57 and 58: #include "CCRTOS.h" void TaskN (voi
Page 59 and 60: Returns: E_INVALID_ID, E_OK, Exampl
Page 61 and 62: Example Usage: #include "CCRTOS.h"
Page 63 and 64: Description: Delay a task for a spe
Page 65 and 66: Example Usage: #include "CCRTOS.h"
Page 67 and 68: The ID of the specified timer Retur
Page 69 and 70: Returns: E_OK, Get the current coun
Page 71 and 72: 6.5 Memory Management 6.5.1 CoKmall
Page 73 and 74: Description: Create a memory partit
Page 75 and 76: 6.5.5 CoGetMemoryBuffer() Function
Page 77 and 78: Example usage: #include "CCRTOS.h"
Page 79 and 80: 6.6 Mutex Section 6.6.1 CoCreateMut
Page 81 and 82: [in] muterID the designated mutex s
Page 83 and 84: Note: None 6.7.2 CoDelSem() Functio
Page 85: Example usage: Note: #include "CCRT
Page 89 and 90: 6.7.6 isr_PostSem() Function Protot
Page 91 and 92: 6.8.2 CoDelMbox() Function Prototyp
Page 99 and 100: 6.9 Message Queues 6.9.1 CoCreateQu
Page 101 and 102: E_INVALID_PARAMETER, invalid parame
Page 103 and 104: 6.9.4 CoPendQueueMail() Function Pr
Page 105 and 106: Note: 1)This function runs a task s
Page 107 and 108: Note: If the number of the message
Page 109 and 110: 6.10 Flags 6.10.1 CoCreateFlag() Fu
Page 111 and 112: E_OK, Example usage: Delete success
Page 113 and 114: OPT_WAIT_ALL, Wait for all the flag
Page 119 and 120: Returns: E_INVALID_ID, E_OK, Exampl
Page 121 and 122: 6.11 System Utilities 6.11.1 CoTick
Page 123 and 124: Returns: E_INVALID_PARAMETER, E_OK,
Page 125: Returns: None Example usage: void C
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