AlazarHyperDisp(HANDLE handle, void *buffer, U32 bufferSize, U8 *viewBuffer, U32 viewBufferSize, U32 numOfPixels, U32 option, U32 channelSelect, U32 record, long transferOffset, U32 *error)¶
Enable the on-board FPGA to process records acquired to on-board memory, and transfer the processed data to host memory.
HyperDisp processing enables the on-board FPGA to divide a record acquired to on-board memory into intervals, find the minimum and maximum sample values during each interval, and transfer an array of minimum and maximum sample values to a buffer in host memory. This allows the acquisition of relatively long records to on-board memory, but the transfer of relatively short, processed records to a buffer in host memory.
For example, it would take an ATS860-256M about ~2.5 seconds to transfer a 250,000,000 sample record from on-board memory, across the PCI bus, to a buffer in host memory. With HyperDisp enabled, it would take the on-board FPGA a fraction of a second to process the record and transfer a few hundred samples from on-board memory, across the PCI bus, to a buffer in host memory.
This function is part of the single-port data acquisition API. It cannot be used with the dual-port AutoDMA APIs.
[in] handle: Board handle
[in] buffer: Reserved (Set to NULL)
[in] bufferSize: Number of samples to process
[out] viewBuffer: Buffer to receive processed data
[in] viewBufferSize: Size of processed data buffer in bytes
[in] numOfPixels: Number of HyperDisp points
[in] option: Processing mode. Pass 1 to enable HyperDisp processing.
[in] channelSelect: Channel to process
[in] record: Record to process (1-indexed)
[in] transferOffset: The offset, in samples, of first sample to process relative to the trigger position in record.
[out] error: Pointer to value to receive a result code.