RTMDblocks library

From Lehigh RTMD Wiki

To load the RTMD Library, run RTMDblocks at a Matlab command prompt. These blocks are used with Simulink and xPC. Note: C:\RTMDMatlab needs to be added to the Matlab path.

There are 4 sections:

Contents 1 Controller Blocks 2 DAQ Blocks 3 xPC Blocks 4 SCRAMNet Blocks

Controller Blocks

• Float -> Fixed: Converts a floating point number to the IEEE fixed point representation used by the Servotest DSP
• Fixed -> Float: Converts a IEEE fixed point representation from the Servotest DSP to a floating point number
• Float 1/1 Fixed: Same as the Float -> Fixed except provides a scaling factor
• Fixed 1 Float: Same as Fixed -> Float except provides a scaling factor

DAQ Blocks

• Counts -> EU: Converts a 16 bit signed integer to Engineering Units. The mask provides the parameters
• Counts -> Counts: Converts a 16 bit signed integer to counts

xPC Blocks

• File Scope: Stores inputs as a binary file on the xPC

SCRAMNet Blocks

• init: Initializes the SCRAMNet
• read: Reads a value from SCRAMNet. A partition struct parameter must be created in Matlab
• write: Writes a value to SCRAMNet. A partition struct parameter must be created in Matlab

When using the read and write SCRAMNet blocks, a Matlab script must be created for setting parameters. The following is an example of setting up a partition struct for address 0x0.

node.Interface.NodeID = '4';
node = completenodestruct([],'scramnet');
p0.Address='0x0';
completepartitionstruct(p0,'scramnet');