Make cpu usage graph to display an I2C signal graph.

Program.cs

// make cpu usage graph to display an I2C signal graph.
// delay is for AMD Ryzen 9 3900X
// tested on AMD Ryzen 9 3900X
// up is SCL, down is SDA

using System.Diagnostics;

Process Proc = Process.GetCurrentProcess();
long AffinityMask = (long)Proc.ProcessorAffinity;
AffinityMask &= (1|1<<6);
Proc.ProcessorAffinity = (IntPtr)AffinityMask;

byte data = 0xD4;

new Thread(new ThreadStart(scl)).Start();
new Thread(new ThreadStart(sda)).Start();

List<int> list = new List<int>();

Proc.Threads[1].ProcessorAffinity = (IntPtr)(1L);
Proc.Threads[2].ProcessorAffinity = (IntPtr)(1L<<6);

Thread.Sleep(30 * 1000);

void high()
{
    for (long i = 0; i < 15000000000; i++) ;
}

void low()
{
    Thread.Sleep(3500);
}

void scl()
{
    high();
    high();
    high();
    low();
    for (int i = 0; i < 8; i++)
    {
        high();
        low();
    }
}

void sda()
{
    high();
    high();
    low();
    low();
    for (int i = 0; i < 8; i++)
    {
        int d = ((data << i) & 0x80);
        Console.WriteLine(d);
        if (d == 0)
            low();
        else
            high();
        low();
    }
}