CooCox CoOS User's Guide

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6.5.6 CoFreeMemoryBuffer() Function Prototype: StatusType CoFreeMemoryBuffer ( OS_MMID mmID, void* buf ); Description: Release the memory block which has the initial address buf to a certain memory partition. Parameters: [IN] mmID The ID of the memory partition [IN] buf The initial address of the memory block which needs to be released Returns: E_INVALID_ID, The ID of the memory partition is invalid. E_INVALID_PARAMETER, Invalid parameter buf. E_OK, Release the memory block successfully. 74
Example usage: #include "CCRTOS.h" OS_MMID mmc; void TaskN (void *pdata) { int *ptr; ... /* Get a memory block from memory partition */ /* mmc: Created by other task */ ptr = (int* )CoGetMemoryBuffer(mmc); if (ptr == NULL) { printf("Assign buffer fail !\n"); } else { ... /* Process assigned buffer here */ ... /* Free assigned buffer to memory partition */ CoFreeMemoryBuffer(mmc, (void* )ptr); } ... } Note: MemBuf must be obtained by CoKmalloc(), or it will error return. 6.5.7 CoGetFreeBlockNum() Function Prototype: U32 CoGetFreeBlockNum ( OS_MMID mmID, StatusType* perr ) Description: Obtain the number of the free block in a certain memory partition. Parameters: [IN] mmID The ID of the memory partition [OUT] perr Errors returned: E_INVALID_ID, The ID is invalid. 75
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CooCox CoOS User's Guide Revision 1
Page 3 and 4:
1 OverView 1.1 About CooCox CoOS Co
Page 5 and 6:
1.2 CooCox CoOS getting started Thi
Page 7 and 8:
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
Page 23 and 24:
Code 1 System tick interrupt handli
Page 25 and 26: 3.3 Software Timer Software timer i
Page 27 and 28: 4 Memory Management 4.1 Static Memo
Page 29 and 30: Assigned memory block list 50 100 2
Page 31 and 32: while allocate the memory. To all t
Page 33 and 34: 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: 6.5.5 CoGetMemoryBuffer() Function
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 and 86: Example usage: Note: #include "CCRT
Page 87 and 88: Example usage: #include "CCRTOS.h"
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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