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68HC11 program


I'm looking do a program using the Motorola 68HC11, and i'm very new to the 68HC11.

So I was hoping that you might be able to help?

I want to write a 68HC11 program to produce a sinewave from a look up table and output it to a D-> Converter. I want to read the frequency of the sinewave from a series of switches connected to port A.

As much help as you can give will be much appreciated!!

Thank you in advance



  • blipblip Member Posts: 756
    I'd reccomend you start with triangle wave output, and dynamically produce it by incrementing and decrementing. If it's an 8-bit DAC then go from 0 to 255 and back down then repeat. For 16-bit, the limit is 65535. To go with the frequency specified, add a small delay value between each increment to lower it.
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