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DMAcompleted

int DMAcompleted( dma_chan_t handle, unsigned int * len );

Description

This function checks to see if a channel is finished with its DMA operation. If complete, the number of bytes transferred in the last operation is returned in *len (if len is not NULL), and 1 is returned.

Parameters

handle

Handle for channel to check

len

Pointer to the value to be filled with the number of bytes last transferred

Return Value

1: DMA operation is complete
0: Allocated channel has never been used or is currently running
-EINVAL: Invalid handle

Library

DMA.LIB

See Also

DMAstop