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NI RFSG Peer To Peer Attributes
- NIRFSG_ATTR_P2P_DATA_TRANSFER_PERMISSION_INITIAL_CREDITS
- NIRFSG_ATTR_P2P_DATA_TRANSFER_PERMISSION_INTERVAL
- NIRFSG_ATTR_P2P_ENABLED
- NIRFSG_ATTR_P2P_ENDPOINT_COUNT
- NIRFSG_ATTR_P2P_ENDPOINT_SIZE
- NIRFSG_ATTR_P2P_GENERATION_FIFO_SAMPLE_QUANTUM
- NIRFSG_ATTR_P2P_IS_FINITE_GENERATION
- NIRFSG_ATTR_P2P_MOST_SPACE_AVAILABLE_IN_ENDPOINT
- NIRFSG_ATTR_P2P_NUMBER_OF_SAMPLES_TO_GENERATE
- NIRFSG_ATTR_P2P_SPACE_AVAILABLE_IN_ENDPOINT
| Numeric Value | Data Type | Access | Coercion | High-Level Functions |
|---|---|---|---|---|
| 1150135 | ViInt64 | R/W | Yes | None |
Specifies the initial amount of data that the writer peer can transfer over the bus into the configured endpoint when the peer-to-peer data stream is enabled. If this attribute is not set and the endpoint is empty, credits equal to the full endpoint size are issued to the writer peer. If data is written to the endpoint using the niRFSG_WriteP2PEndpointI16 function prior to enabling the stream, credits equal to the remaining space available in the endpoint are issued to the writer peer. This attribute is coerced up by NI-RFSG to 8-byte boundaries. This attribute is endpoint-based.
Units: samples per channel
Default Value: 1,024
Supported Devices: PXIe-5673E
Related Topics
Configuring a Peer-to-Peer Endpoint
Configuring Flow Control
| Numeric Value | Data Type | Access | Coercion | High-Level Functions |
|---|---|---|---|---|
| 1150134 | ViInt64 | R/W | Yes | None |
Specifies the interval at which the RF signal generator issues credits to allow the writer peer to transfer data over the bus into the configured endpoint. This attribute is coerced up by NI-RFSG to the nearest 128-byte boundary. This attribute is endpoint-based.
Units: samples per channel
Supported Devices: PXIe-5673E
Related Topics
Configuring a Peer-to-Peer Endpoint
Configuring Flow Control
| Numeric Value | Data Type | Access | Applies to | Coercion | High-Level Functions |
|---|---|---|---|---|---|
| 1150123 | ViBoolean | R/W | Endpoint | None | None |
Specifies whether the RF signal generator reads data from the peer-to-peer endpoint. This attribute is endpoint-based.
Defined Values:
| VI_TRUE | Peer-to-peer data streaming is enabled. |
|---|---|
| VI_FALSE | Peer-to-peer data streaming is disabled. |
| Default Value: VI_FALSE |
Supported Devices: PXIe-5673E, PXIe-5820/5830/5831/5832/5840/5841
Related Topics
Configuring a Peer-to-Peer Endpoint
| Numeric Value | Data Type | Access | Coercion | High-Level Functions |
|---|---|---|---|---|
| 1150127 | ViInt32 | RO | None | None |
Returns the number of peer-to-peer FIFO endpoints supported by the device.
Supported Devices: PXIe-5673E, PXIe-5820/5830/5831/5832/5840/5841
Related Topics
Configuring a Peer-to-Peer Endpoint
| Numeric Value | Data Type | Access | Applies to | Coercion | High-Level Functions |
|---|---|---|---|---|---|
| 1150124 | ViInt32 | RO | Endpoint | None | None |
Returns the size, in samples, of the device endpoint. This attribute is endpoint-based.
Units: samples (s)
Supported Devices: PXIe-5673E, PXIe-5820/5830/5831/5832/5840/5841
Related Topics
Configuring a Peer-to-Peer Endpoint
| Numeric Value | Data Type | Access | Applies to | Coercion | High-Level Functions |
|---|---|---|---|---|---|
| 1150219 | ViInt64 | RO | Endpoint | None | None |
Returns how many samples NI-RFSG pulls from the peer-to-peer FIFO per read. You can use this attribute to determine how many samples to send across the peer-to-peer bus to ensure that no samples are ignored. If you send a number of samples that is not a multiple of this value, the remaining samples are not read from the FIFO during generation. This attribute is endpoint-based.
Supported Devices: PXIe-5820/5830/5831/5832/5840/5841
| Numeric Value | Data Type | Access | Applies to | Coercion | High-Level Functions |
|---|---|---|---|---|---|
| 1150217 | ViBoolean | R/W | Endpoint | None | None |
Specifies whether peer-to-peer should continuously generate data from the peer-to-peer stream or from only a finite number of samples, according to the NIRFSG_ATTR_P2P_NUMBER_OF_SAMPLES_TO_GENERATE attribute. To use this attribute, peer-to-peer must be enabled. This attribute is endpoint-based.
Defined Values:
| VI_TRUE | Data is generated from only a finite number of samples. |
|---|---|
| VI_FALSE | Data is continuously generated from the peer-to-peer stream. |
| Default Value: VI_FALSE |
Supported Devices: PXIe-5820/5830/5831/5832/5840/5841
| Numeric Value | Data Type | Access | Applies to | Coercion | High-Level Functions |
|---|---|---|---|---|---|
| 1150126 | ViInt32 | RO | Endpoint | None | None |
Returns the largest number of samples per channel available in the endpoint since this attribute was last read. You can use this attribute to determine how much endpoint space to use as a buffer against bus traffic latencies by reading the attribute and keeping track of the largest value returned. This attribute is endpoint-based.
If you want to minimize the latency for data to move through the endpoint and be generated by the RF signal generator, use the NIRFSG_ATTR_P2P_DATA_TRANSFER_PERMISSION_INITIAL_CREDITS attribute to grant fewer initial credits than the default of the entire endpoint size.
Units: samples per channel
Supported Devices: PXIe-5673E, PXIe-5820/5830/5831/5832/5840/5841
Related Topics
Configuring a Peer-to-Peer Endpoint
| Numeric Value | Data Type | Access | Applies to | Coercion | High-Level Functions |
|---|---|---|---|---|---|
| 1150218 | ViInt64 | R/W | Endpoint | None | None |
Specifies how many samples are generated from the peer-to-peer subsystem when it is enabled. To use this attribute, peer-to-peer must be enabled and set to finite generation. This attribute is endpoint-based.
Supported Devices: PXIe-5820/5830/5831/5832/5840/5841
Related Topics
Configuring a Peer-to-Peer Endpoint
| Numeric Value | Data Type | Access | Applies to | Coercion | High-Level Functions |
|---|---|---|---|---|---|
| 1150125 | ViInt32 | RO | Endpoint | None | None |
Returns the current space available in the endpoint. You can use this attribute when priming the endpoint with initial data using the niRFSG_WriteP2PEndpointI16 function to determine how many samples you can write. You also can use this attribute to characterize the performance and measure the latency of the peer-to-peer stream as data moves across the bus. This attribute is endpoint-based.
Units: samples per channel
Supported Devices: PXIe-5673E, PXIe-5820/5830/5831/5832/5840/5841
Related Topics
Configuring a Peer-to-Peer Endpoint
Starting Peer-to-Peer Generation
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