UD435 fails when using PWM3.4

[MMajo]

Using PWM3.4 in combination with UD435 causes UD435 to fail on SCM20260D Dev.

[Palomino34]

I am assuming PWM3.4 = Controller3.PB1. because PB1 because this pin is controller3, channel4. This also connects to Buzzer on 20260Dev. The test code below, I don't see any bug or wrong on display and buzzer sound.

using GHIElectronics.TinyCLR.Devices.Gpio;
using GHIElectronics.TinyCLR.Devices.Pwm;
using GHIElectronics.TinyCLR.Pins;
using System;
using System.Collections;
using System.Diagnostics;
using System.Drawing;
using System.Text;
using System.Threading;

namespace TestString
{
    internal class Program
    {
        const int BACKLIGHT = SC20260.GpioPin.PA15;

        //const int LED1 = SC20260.GpioPin.PA0; // PB0
        const int LED1 = SC20260.GpioPin.PB0; // PB0
        const int LDR1 = SC20260.GpioPin.PE3; // PB7;

        const int SCREEN_WIDTH = 480;
        const int SCREEN_HEIGHT = 272;

        static GpioPin led1;
        static GpioPin ldr1;
        static void Main()
        {

            var controller = GpioController.GetDefault();

            led1 = controller.OpenPin(LED1);
            ldr1 = controller.OpenPin(LDR1);

            led1.SetDriveMode(GpioPinDriveMode.Output);

            ldr1.SetDriveMode(GpioPinDriveMode.InputPullUp);

            while (true)
            {
                if (ldr1.Read() == GpioPinValue.Low)
                {
                    while (ldr1.Read() == GpioPinValue.Low) ;

                    break;


                }

            }

            if (BACKLIGHT != 0)
            {
                GpioPin backlight = GpioController.GetDefault().OpenPin(BACKLIGHT);

                backlight.SetDriveMode(GpioPinDriveMode.Output);

                backlight.Write(GpioPinValue.Low);

                Thread.Sleep(100);

                backlight.Write(GpioPinValue.High);
            }

            var displayController = GHIElectronics.TinyCLR.Devices.Display.DisplayController.GetDefault();

            var controllerSetting = new GHIElectronics.TinyCLR.Devices.Display.ParallelDisplayControllerSettings
            {
                Width = SCREEN_WIDTH,
                Height = SCREEN_HEIGHT,
                DataFormat = GHIElectronics.TinyCLR.Devices.Display.DisplayDataFormat.Rgb565,
                PixelClockRate = 10000000,
                PixelPolarity = false,
                DataEnablePolarity = false,
                DataEnableIsFixed = false,
                HorizontalFrontPorch = 2,
                HorizontalBackPorch = 2,
                HorizontalSyncPulseWidth = 41,
                HorizontalSyncPolarity = false,
                VerticalFrontPorch = 2,
                VerticalBackPorch = 2,
                VerticalSyncPulseWidth = 10,
                VerticalSyncPolarity = false,
            };


            displayController.SetConfiguration(controllerSetting);
            displayController.Enable();

            var screen = Graphics.FromHdc(displayController.Hdc);

            new Thread(() =>
            {
                while (true)
                {
                    if (ldr1.Read() == GpioPinValue.Low)
                    {
                        while (ldr1.Read() == GpioPinValue.Low) ;

                        break;


                    }

                    Thread.Sleep(10);

                }
                var pwmController3 = PwmController.FromName(SC20260.Timer.Pwm.Controller3.Id);

                var pwmChannel4 = pwmController3.OpenChannel(SC20260.Timer.Pwm.Controller3.PB1);

                pwmController3.SetDesiredFrequency(1 / 0.0011);

                pwmChannel4.SetActiveDutyCyclePercentage(0.25);

                pwmChannel4.Start();
            }
            ).Start();

            var x = 0;
            var y = 0;
            var dirx = 1;
            var diry = 1;
            while (true)
            {
                screen.Clear();

                screen.FillEllipse(new SolidBrush(System.Drawing.Color.FromArgb(255, 0xFF, 0, 0)), x, y, 100, 100);
               

                screen.Flush();


                x += (10 * dirx);
                y += (5 * diry);

                if (x >= SCREEN_WIDTH)
                    dirx = -1;
                else if (x <= 0)
                    dirx = 1;

                if (y >= SCREEN_HEIGHT)
                    diry = -1;
                else if (y <= 0)
                    diry = 1;



                Thread.Sleep(250);

            }

        }
    }
}