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Questions on PWM

Jason Tan
Prodigy 20 points

Hi,

This is my first time using the TI mcu. I am working on solar project and I am required to program the f2812 to generate a pwm to drive my power transistor to operate in mppt condition. I have studied the C/C++ header files and example for PWM. However I am still not able to understand how to initialize the event manager to generate a PWM.

   EvaRegs.T1PR = 0xFFFF;      
   EvaRegs.T1CMPR = 0x3C00;   
    EvaRegs.T1CON.all = 0x1042;  

Why the T1PR, T1CMPR and T1CON.all is set for that particular value in this example?

Is there any flowchart for guidance to generate a PWM waveform of different duty cycle for every loop to drive my dc-dc converter work at mppt?

Thank you .

  • 0
    Genius 5170 points

    Please check out the example projects which come with header file installation .. you will find projects on various peripherals including PWM/Even manager etc.

    By the way, if it is possible and not too late then I believe you will be better off using 280xxx devices instead of 281x .. newer devices will offer you more flexible peripherals and latest example code. I think TI even has a renewable enegy Kit based on  newer devices ...