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5.3
Data
Acquisition
Modes
5.4
Point-by-
Point API
Table 5-1 Low-level DNx-VR-608 API Functions
Function
DqAdv608SetCfg
DqAdv608GetCfg
DqAdv608SetCfgExt
DqAdv608GetCfgExt
DqAdv608SetADCClock
DqAdv608ConvertRawData
DqAdv608Read
DqAdv608ReadADCStatus
DqAdv608ReadADCFifo
DqAdv608ReadFifo
DqAdv608ReadStatus
DqAdv608SetSensorSim
DqAdv608SetWatermark
DqAdv608Enable
© Copyright 2024
United Electronic Industries, Inc.
The following data acquisition (DAQ) mode is available for transferring data
between the DNx-VR-608 and the low-level user application:
•
Point-by-Point: Transfers one data point at a time to/from each
configured channel of a single I/O board. Timing is controlled by the
user application, which limits the transfer rate to 100Hz. This mode is
also known as immediate mode or simple mode.
•
Real-Time Data Map (RtDMap): Transfers a packet containing one
data point for each channel in the user-defined map. The newest data is
transferred and old data is discarded. RtDMap is designed for closed-
loop (control) applications and may include channels across multiple I/O
boards.
Please refer to "FAQ - Data Acquisition Modes" for an overview and comparison
of all the different acquisition modes offered by UEI. The "PowerDNx Protocol
Manual" includes more detailed information about the protocols. Both of these
documents are located in the directories listed in Section 5.1.
Table 5-1 summarizes the low-level API used to configure, read from, and write
to the DNx-VR-608 in Point-by-Point DAQ mode.
Configure a VR-608 Rev.1 board.
Get the presently configured parameters for a Rev.1 board.
Configure a VR-608 Rev. 2 board.
Get the presently configured parameters for a Rev.2 board.
Set the ADC rate for the VR-608 device.
Converts raw counter data to velocity, position, and tooth count.
Reads position, velocity, tooth count, time stamp inputs.
Reads ADC status, most recent calibrated voltages, and
min/max voltages.
Read raw ADC data stored in the FIFO and enable ADC writes
to the FIFO.
Read VR channel data from the FIFO.
Reads VR alarm, TTL input routing, and revision information.
Configure VR simulator outputs.
Set the buffer watermark level to control dataflow from the IOM.
Start or stop a VR-608 device.
The functions and parameters are described in detail in the "PowerDNA API
Reference Manual". See Sample608.c for a comprehensive example which
includes typical initialization, error handling, and usage of these functions.
February 2024
DNx-VR-608 Variable Reluctance Interface
Programming with the Low-level API
Description
Chapter 5
44
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