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PWM assembly code for 4 PWM signals

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omaxboss

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I am doing a project in 8051 mc in which I have to generate atleast 4 PWM signals with varying both period and duration to control invertor using the software method. The duration of each PWM varies about 20-100ms. 8051 mc accepts set point from the computer, and according to it sends the necessary PWM signal.
Actually, Iwant that inverter management was symmetric, asymmetrical and serial. Can anyone explain some logic for that. Is anyone having the assembly code in 8051 for this? If so please send it to me at omaxboss@sibmail.com.

Thanks in advance.
 

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