Problem with nanoFramework.Hardware.Esp32.Rmt

[NazzaN]

Hi, I found a probably issue on nanoFramework.Hardware.Esp32.Rmt v2.0.35

with this code:

                var rxChannelSettings = new ReceiverChannelSettings(3)
                {
                    // 1us clock ( 80Mhz / 80 ) = 1Mhz
                    //ClockDivider = 80,
                    // no filter
                    EnableFilter = true,
                    FilterThreshold = 100,
                    // max time 1us clock
                    //IdleThreshold = ushort.MaxValue,
                    IdleThreshold = 40_000,
                    // timeout after 1 second
                    ReceiveTimeout = TimeSpan.FromSeconds(1),
                    EnableDemodulation = false
                };
               using var rxChannel = new ReceiverChannel(rxChannelSettings);

I receive:

++++ Exception System.Exception - CLR_E_DRIVER_NOT_REGISTERED (3) ++++
++++ Message: 
++++ nanoFramework.Hardware.Esp32.Rmt.ReceiverChannel::NativeRxInit [IP: 0000] ++++
++++ nanoFramework.Hardware.Esp32.Rmt.ReceiverChannel::.ctor [IP: 001a] ++++

on ESP32_S3_BLE XIAO_ESP32C3 ESP32_C3_REV3 ESP32_C6_THREAD

workaround is to manualy set the channel

   var rxChannelSettings = new ReceiverChannelSettings(3)
                {
                    EnableFilter = true,
                    FilterThreshold = 100,
                    IdleThreshold = 40_000,
                    ReceiveTimeout = TimeSpan.FromSeconds(1),
                    //Inserting this work but non on all boards
                    **Channel = 4,**
                    EnableDemodulation = false
                };
               using var rxChannel = new ReceiverChannel(rxChannelSettings);

but this work only on ESP32_S3_BLE non on C3 and not on C6

this problem affect also other classes using Esp32 Rtm:
Iot.Device.DHTxx.Esp32.DhtBase constructor (workaround ok only on S3)

[nanoFramework.IoT.Device/DhtBase.csdevices/Dhtxx.Esp32/DhtBase.cs]https://github.com/nanoframework/nanoFramework.IoT.Device/blob/develop/devices/Dhtxx.Esp32/DhtBase.cs

NeoPixel.NeopixelChain (affected only C3 and C6) this sample is using TransmitterChannel
samples/Hardware.Esp32.Rmt/NeoPixelStrip/NeoPixel/NeopixelChain.cs
https://github.com/nanoframework/Samples/blob/main/samples/Hardware.Esp32.Rmt/NeoPixelStrip/NeoPixel/NeopixelChain.cs

I find the exception on C++ code but I've not IDE and skills to investigate:
....nanoFramework.Hardware.Esp32.Rmt/nanoFramework_hardware_esp32_rmt_native_nanoFramework_Hardware_Esp32_Rmt_ReceiverChannel.cpp::NativeRxInit___I4
....nanoFramework.Hardware.Esp32.Rmt/nanoFramework_hardware_esp32_rmt_native_nanoFramework_Hardware_Esp32_Rmt_TransmitterChannel.cpp::NativeTxInit___I4

Thanks for attention.

N.