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Latest FirmWare

Started by Tek10, Oct 06 2011 12:27 AM

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4 replies to this topic

#1 Tek10

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6 posts

Posted 06 October 2011 - 12:27 AM

Will the release of firmware 4.2.0 require the .NET Micro Framework 4.2 or visa versa? Will the new firmware have ability to adjust frequency for PWM? I'm new to this forum so if I posted incorrectly please let me know where I should post. Any help would be appreciated.

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#2 Stefan

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1965 posts

LocationBreda, the Netherlands

Posted 06 October 2011 - 06:03 AM

Will the release of firmware 4.2.0 require the .NET Micro Framework 4.2 or visa versa?

Yep

Will the new firmware have ability to adjust frequency for PWM?

I believe so, but no details are available so far.

The makers of Netduino are working hard on the Netduino 4.2 RC3 firmware. Stay tuned!

_{"Fact that I'm a moderator doesn't make me an expert in things." Stefan, the eternal newb!}
My .NETMF projects: .NETMF Toolbox / Gadgeteer Light / Some PCB designs

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#3 Cuno

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LocationZ�rich / Switzerland

Posted 06 October 2011 - 07:54 AM

Will the new firmware have ability to adjust frequency for PWM?

Yes. You can set the period and duration (within a period) of the pulses, or alternatively the frequency and duty cycle.

namespace Microsoft.SPOT.Hardware
{
    public class PWM : IDisposable
    {
        public PWM(Cpu.PWMChannel channel, uint period_us, uint duration_us, bool invert);
        public PWM(Cpu.PWMChannel channel, double frequency_Hz, double dutyCycle, bool invert);

        public uint Duration { get; set; }
        public uint Period { get; set; }

        public double DutyCycle { get; set; }
        public double Frequency { get; set; }

        ...
    }
}

Frequency and DutyCycle are only syntactic sugar, they are internally converted to Duration and Period. The latter are both interpreted as microseconds (in the source code, the comments erroneously claim that they are a frequency and a percentage).

Best regards

Cuno

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#4 Tek10

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6 posts

Posted 06 October 2011 - 02:23 PM

Yep

I believe so, but no details are available so far.

The makers of Netduino are working hard on the Netduino 4.2 RC3 firmware. Stay tuned!

Thanks... waiting patiently

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#5 Tek10

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Members
6 posts

Posted 06 October 2011 - 02:25 PM

Yes. You can set the period and duration (within a period) of the pulses, or alternatively the frequency and duty cycle.
namespace Microsoft.SPOT.Hardware
{
    public class PWM : IDisposable
    {
        public PWM(Cpu.PWMChannel channel, uint period_us, uint duration_us, bool invert);
        public PWM(Cpu.PWMChannel channel, double frequency_Hz, double dutyCycle, bool invert);

        public uint Duration { get; set; }
        public uint Period { get; set; }

        public double DutyCycle { get; set; }
        public double Frequency { get; set; }

        ...
    }
}
Frequency and DutyCycle are only syntactic sugar, they are internally converted to Duration and Period. The latter are both interpreted as microseconds (in the source code, the comments erroneously claim that they are a frequency and a percentage).

Best regards

Cuno

This is awesome!!! exactly what i've been looking to do