Thanks for the quick response.

I am getting the hrWRONGPID error in the dispatchPacket function.

The packet ID is (tokIN | nDevice->bulk_in.address) so what can be wrong here…

I don’t have any problems in reading or writing during the configuration process.

The dispatchPacket function also doesn’t give any errors when I’m writing to the bulk_in.

I only have the hrWRONGPID error when I read from the bulk_out.

The tokIN is 0b00000000 (HS=0, ISO=0, OUTNIN=0, SETUP=0) so the only thing that can be wrong in the PID is the endpoint adress.

These are the descriptors that I got during configuration:
Configuration Descriptor: 09 02 20 00 01 01 00 80 64
Interface Descriptor: 09 04 00 00 02 08 06 50 00
InEndpoint Descriptor: 07 05 81 02 40 00 00
OutEndpoint Descriptor: 07 05 02 02 40 00 00

So the bulk_in.address is 0×81 and the bulk_out.address is 02.

And I’ve initialized the bulk_out using the usb_initEndPoint function:
bulk_out.address = address;//address = 0×02
bulk_out.sendToggle = bmSNDTOG0;
bulk_out.receiveToggle = bmRCVTOG0;
bulk_out.attributes = USB_TRANSFER_TYPE_BULK;
bulk_out.maxPacketSize = Endpoint.wMaxPacketSize;//wMaxPacketSize = 0×0040

Do you have any idea on this?

I am lost here…

I am going on with the project. I am implementing a Host and I want to read a pendrive.

I am able to read and write to the control endPint wish allowed me to get the Configuration Descriptor and configure the rest of the endpoints.

Now I am writing to the out endpint with no errors but I am unable to read.

I am getting no data available (MAX_REG_HIRQ & bmHXFRDNIRQ != bmHXFRDNIRQ)

I think that there is a problem with the SCSI Command that I am sending.

Do you know some “Hello World” command to verify that I am communicating with the pendrive?

The chip is dead.

The internal ppl didn’t start and it should start as soon as we power it. That is when I realized that it was an hardware problem.

I’ve replaced the chip and now it is working.

Thanks for the quick response.

I am connecting Max3421e with ATXmega192A3U to have USB host.

I am using your code but I had to change it to adjust it for the ATXmega192A3U.

The functions to read an write to registers are working but now I am stuck in the reset process.

I am getting “OSCOKIRQ failed to assert”.

The reset is ok because the CHIPRES bit is clearing the registers that it is suppose to clear.

The problem is that the internal oscillator does not restart.

Is there some configurations that I am missing?

In file included from sketch_apr23a.cpp:4:
C:\Users\EWAQAMU\Desktop\arduino-0023\hardware\arduino\cores\arduino/max3421e.h:11: error: expected class-name before ‘{‘ token

Can you please help in giving me an idea where I can be going wrong ?