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Pwm support for windows embedded

andrea de benedictis
Prodigy 40 points

hello,
I would ask questions about the pwm available, in my application I have to handle the intensity of the screen, I bought a card Variscite, with the Am335 processor and are not available for pwm drivers. It seems that it is not supported by the operating system (Windows Embedded Compact 7), but is it possible? The TI provides something you do not know? May need a map. H all processor registers to manage the pwm?

thanks in advance for any help

Andrea

  • 0
    Mastermind 9310 points

    Hello Andrea,

    The AM335x WEC7 BSP (A8.02.30.00) has a backlight driver that controls the backlight on the Am335x EVM's backlight. However, it only turns on or off a GPIO to enable/disable the backlight. However, if you wanted to use a backlight on your custom hardware that controlled the intensity using a PWM signal from the SoC, the AM335x has a Pulse-Width Modulation SubSystem (PWMSS) controller that can be used to control the backlight. Unfortunately, there is not a driver that already uses this controller. This would mean that a new driver would have to be created that uses the PWM, or the backlight driver would have to be modified to use the PWM controller to control the intensity of your backlight.