Unable to open 2 x SPI bus at same time

[AdrianSoundy]

2nd bus needs to use different DMA channel
Also updated CmakeSettings.json so i could build using VS

Tested with simple program to open both spi buses and write to both

using System;
using System.Threading;
using Windows.Devices.Spi;
using nanoFramework.Hardware.Esp32;

namespace SpiTest1
{
    public class Program
    {
        public static void Main()
        {
            // SPI pins mosi, miso, clk,           CS
            //  1       23    25    19  (default)   22
            //  2       4      5     17             18
            Configuration.SetPinFunction(17, DeviceFunction.SPI2_CLOCK);
            Configuration.SetPinFunction(5, DeviceFunction.SPI2_MISO);
            Configuration.SetPinFunction(4, DeviceFunction.SPI2_MOSI);

            var spi1 = SpiDevice.FromId("SPI1", new SpiConnectionSettings(22){ ClockFrequency = 1 * 1000 * 1000, DataBitLength = 8 });
            var spi2 = SpiDevice.FromId("SPI2", new SpiConnectionSettings(18) { ClockFrequency = 1 * 1000 * 1000, DataBitLength = 8 });

            while (true)
            {
                spi1.Write(new byte[] { 0x0 });
                spi2.Write(new byte[] { 0x0 });
                Thread.Sleep(1000);
            }
        }
    }
}

Types of changes

• Improvement (non-breaking change that improves a feature, code or algorithm)
• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Checklist:

• My code follows the code style of this project.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have read the CONTRIBUTING document.
• I have added tests to cover my changes.
• All new and existing tests passed.

Signed-off-by: adriansoundy adriansoundy@gmail.com

[nfbot]

Hi @AdrianSoundy,

I'm nanoFramework bot.
Thank you for your contribution!

A human will be reviewing it shortly. 😉