Wave generation using DAC, Microprocessors
lorddongAssume we are required to generate a sinusoidal waveform of 293.665 Hz (music tone D), and the DAC converter is triggered by TIM4 TRGO with a frequency of 44,100Hz.
a. How many DAC outputs should we produce during one cycle of the sinusoidal waveform?
b. The angle of the sine function should increase from 0° to 360° to complete one cycle of the sinusoidal waveform. How many degrees should the angle variable be increased in timer interrupt handler each time?
c. The processor only supports integer arithmetic. If the angle degree to be increased is not an integer, what can you do to get around this issue? Scale the degree angle to make it an integer.
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