USB Project (15th July) Ian Coulter

Modifications FSI Mode – Runs the ADC in Frequency Scanning Mode where we get a single data transfer when all the readings have been taken FFI Mode – Runs the ADC in Fixed Frequency Mode where we require continuous data transfer FFI Stop – Used to stop FFI mode operation

Modifications Changed the C code to produce a HEX file containing the new commands The USB interface downloads this HEX file and so can convert the hexadecimal commands put into the interface to the binary used in the ADC

Modifications Changed C++ code of the interface to include these commands in the preset options menu Next: test these new options using a signal generator to see if they work

DLL Dynamic Link Library A library of commands that can be used by another program to call up functions Can be moved into different programs so several can share the same basic set of commands

DLL Have assembled DLLs that can: Write to and read from a file Add two numbers together Write an array to file and sum the components Have added these into simple Labview programs

Addition of two numbers DLL in Labview

Sum of the components of an array in Labview

DLL Need to assemble a DLL with commands that transfer data in and out of the USB Write this data transfer DLL into Labview to allow use of the USB through Labview