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Com. Design files and schematics as well as custom versions are also available. , the frequency will change). In the case of the frequency ramp function, the actual value of a profile’s frequency tuning word is not actually changed; instead, a frequency accumulator register is used along with an adder to combine the two values before passing them on to the phase accumulator. The frequency ramp function can ramp the DDS frequency up and down (in any amount) from the DDS’s minimum-frequency resolution on up.

Less than the thickness of the board). However, resistors and other parts with longer leads are a different matter. In this case, you must either trim the Photo 2—A small pin is my favorite tool for punching holes in the foam board. com Photo 3—Notice that D1 doesn’t actually touch J2, as the PCB layout program’s silkscreen outline indicates. leads—which is fine if you’re not planning to reuse the component—or extend the hole to the backside with something like a map pin. That’s what I usually do.

Usually, I would start writing the code before I finished building the hardware. Simulation is 46 Issue 156 July 2003 the only way to test software. But, I already had the MSP430edu PCB, so why would I simulate first? It’s easier to use the hardware for debugging. I had eight LEDs to display data and indicate the start of routines and subroutines. I also had two switches to give inputs or start an interrupt. I simply flashed the code and tried it. I changed some lines of code and flashed it again within seconds to see the results of the new lines of code.

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