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The file implements the API which is used to open an EDMA channel. More...
#include <ti/csl/csl_edma3.h>
Functions | |
CSL_Edma3ChannelHandle | CSL_edma3ChannelOpen (CSL_Edma3ChannelObj *pEdmaObj, CSL_InstNum edmaNum, CSL_Edma3ChannelAttr *pChAttr, CSL_Status *pStatus) |
The file implements the API which is used to open an EDMA channel.
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CSL_Edma3ChannelHandle CSL_edma3ChannelOpen | ( | CSL_Edma3ChannelObj * | pEdmaObj, |
CSL_InstNum | edmaNum, | ||
CSL_Edma3ChannelAttr * | pChAttr, | ||
CSL_Status * | pStatus | ||
) |
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CSL_edma3ChannelOpen
Description
The API returns a handle for the specified EDMA Channel for use. The channel can be re-opened anytime after it has been normally closed if so required. The handle returned by this call is input as an essential argument for many of the APIs described for this module.
Arguments
pEdmaObj pointer to the object that holds reference to the channel instance of the Specified DMA edmaNum Instance of EDMA whose channel is requested pChAttr Channel Attributes which describe the channel to be opened. status Status of the function call
Return Value
Success - Channel Handle
Error - NULL
Pre Condition
CSL_edma3Init(), CSL_edma3Open() must be invoked successfully in that order before this API can be invoked
Post Condition EDMA channel object structure is populated
Affects
None
Example
CSL_Edma3Handle hModule; CSL_Edma3Obj edmaObj; CSL_Edma3ChannelObj chObj; CSL_Edma3ChannelHandle hChannel; CSL_Edma3ChannelAttr chAttr; CSL_Status status; // Module Initialization CSL_edma3Init(NULL); // Module Level Open hModule = CSL_edma3Open(&edmaObj, 0, NULL,&status); // Channel 0 Open in context of Shadow region 0 chAttr.regionNum = CSL_EDMA3_REGION_0; chAttr.chaNum = 0; hChannel = CSL_edma3ChannelOpen(&chObj, 0, &chAttr, &status); ...
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