Arduino Nano ATmega328 (old bootloader) cannot open connection

[davidezanella]

It seems that the library is not able to open a connection with my Arduino Nano ATmega328 (old bootloader) even if it is correctly identified. It is something related to the UART protocol, I suppose. The following is the avrdude output while uploading from Arduino IDE:

avrdude: Version 6.3-20190619
         Copyright (c) 2000-2005 Brian Dean, http://www.bdmicro.com/
         Copyright (c) 2007-2014 Joerg Wunsch

         System wide configuration file is "C:\Program Files (x86)\Arduino\hardware\tools\avr/etc/avrdude.conf"

         Using Port                    : COM9
         Using Programmer              : arduino
         Overriding Baud Rate          : 57600
         AVR Part                      : ATmega328P
         Chip Erase delay              : 9000 us
         PAGEL                         : PD7
         BS2                           : PC2
         RESET disposition             : dedicated
         RETRY pulse                   : SCK
         serial program mode           : yes
         parallel program mode         : yes
         Timeout                       : 200
         StabDelay                     : 100
         CmdexeDelay                   : 25
         SyncLoops                     : 32
         ByteDelay                     : 0
         PollIndex                     : 3
         PollValue                     : 0x53
         Memory Detail                 :

                                  Block Poll               Page                       Polled
           Memory Type Mode Delay Size  Indx Paged  Size   Size #Pages MinW  MaxW   ReadBack
           ----------- ---- ----- ----- ---- ------ ------ ---- ------ ----- ----- ---------
           eeprom        65    20     4    0 no       1024    4      0  3600  3600 0xff 0xff
           flash         65     6   128    0 yes     32768  128    256  4500  4500 0xff 0xff
           lfuse          0     0     0    0 no          1    0      0  4500  4500 0x00 0x00
           hfuse          0     0     0    0 no          1    0      0  4500  4500 0x00 0x00
           efuse          0     0     0    0 no          1    0      0  4500  4500 0x00 0x00
           lock           0     0     0    0 no          1    0      0  4500  4500 0x00 0x00
           calibration    0     0     0    0 no          1    0      0     0     0 0x00 0x00
           signature      0     0     0    0 no          3    0      0     0     0 0x00 0x00

         Programmer Type : Arduino
         Description     : Arduino
         Hardware Version: 2
         Firmware Version: 1.16
         Vtarget         : 0.0 V
         Varef           : 0.0 V
         Oscillator      : Off
         SCK period      : 0.1 us

avrdude: AVR device initialized and ready to accept instructions

This is the log of the library while trying to open a connection: (I changed some log to report more data)

D/AutoCommunicator: POSSIBLY WCH
    Yes WCH!
D/UartWinCH34x: Trying VID: 6790
D/UsbCdcConnection: VID PASS 6790
    PID PASS 29987
    ACM PASS
    ch == chNum
    deviceIsConnected 0
D/UsbAccessor: Device(0) : UsbDevice[mName=/dev/bus/usb/001/002,mVendorId=6790,mProductId=29987,mClass=255,mSubclass=0,mProtocol=0,mManufacturerName=null,mProductName=USB2.0-Ser!,mVersion=2.54,mSerialNumberReader=android.hardware.usb.IUsbSerialReader$Stub$Proxy@505625,mConfigurations=[
    UsbConfiguration[mId=1,mName=null,mAttributes=128,mMaxPower=48,mInterfaces=[
    UsbInterface[mId=0,mAlternateSetting=0,mName=null,mClass=255,mSubclass=1,mProtocol=2,mEndpoints=[
    UsbEndpoint[mAddress=130,mAttributes=2,mMaxPacketSize=32,mInterval=0]
    UsbEndpoint[mAddress=2,mAttributes=2,mMaxPacketSize=32,mInterval=0]
    UsbEndpoint[mAddress=129,mAttributes=3,mMaxPacketSize=8,mInterval=1]]]]
D/UsbAccessor: Device(0) : UsbDevice[mName=/dev/bus/usb/001/002,mVendorId=6790,mProductId=29987,mClass=255,mSubclass=0,mProtocol=0,mManufacturerName=null,mProductName=USB2.0-Ser!,mVersion=2.54,mSerialNumberReader=android.hardware.usb.IUsbSerialReader$Stub$Proxy@60badab,mConfigurations=[
    UsbConfiguration[mId=1,mName=null,mAttributes=128,mMaxPower=48,mInterfaces=[
    UsbInterface[mId=0,mAlternateSetting=0,mName=null,mClass=255,mSubclass=1,mProtocol=2,mEndpoints=[
    UsbEndpoint[mAddress=130,mAttributes=2,mMaxPacketSize=32,mInterval=0]
    UsbEndpoint[mAddress=2,mAttributes=2,mMaxPacketSize=32,mInterval=0]
    UsbEndpoint[mAddress=129,mAttributes=3,mMaxPacketSize=8,mInterval=1]]]]
D/UsbAccessor: Interface(0,0) : UsbInterface[mId=0,mAlternateSetting=0,mName=null,mClass=255,mSubclass=1,mProtocol=2,mEndpoints=[
    UsbEndpoint[mAddress=130,mAttributes=2,mMaxPacketSize=32,mInterval=0]
    UsbEndpoint[mAddress=2,mAttributes=2,mMaxPacketSize=32,mInterval=0]
    UsbEndpoint[mAddress=129,mAttributes=3,mMaxPacketSize=8,mInterval=1]]
D/UsbCdcConnection: Find VID:1a86, PID:7523, DevNum:0, IntfNum:0
D/UsbAccessor: Device(0) : UsbDevice[mName=/dev/bus/usb/001/002,mVendorId=6790,mProductId=29987,mClass=255,mSubclass=0,mProtocol=0,mManufacturerName=null,mProductName=USB2.0-Ser!,mVersion=2.54,mSerialNumberReader=android.hardware.usb.IUsbSerialReader$Stub$Proxy@f253c08,mConfigurations=[
    UsbConfiguration[mId=1,mName=null,mAttributes=128,mMaxPower=48,mInterfaces=[
    UsbInterface[mId=0,mAlternateSetting=0,mName=null,mClass=255,mSubclass=1,mProtocol=2,mEndpoints=[
    UsbEndpoint[mAddress=130,mAttributes=2,mMaxPacketSize=32,mInterval=0]
    UsbEndpoint[mAddress=2,mAttributes=2,mMaxPacketSize=32,mInterval=0]
    UsbEndpoint[mAddress=129,mAttributes=3,mMaxPacketSize=8,mInterval=1]]]]
D/UsbAccessor: Interface(0,0) : UsbInterface[mId=0,mAlternateSetting=0,mName=null,mClass=255,mSubclass=1,mProtocol=2,mEndpoints=[
    UsbEndpoint[mAddress=130,mAttributes=2,mMaxPacketSize=32,mInterval=0]
    UsbEndpoint[mAddress=2,mAttributes=2,mMaxPacketSize=32,mInterval=0]
    UsbEndpoint[mAddress=129,mAttributes=3,mMaxPacketSize=8,mInterval=1]]
D/UsbAccessor: Device(0) : UsbDevice[mName=/dev/bus/usb/001/002,mVendorId=6790,mProductId=29987,mClass=255,mSubclass=0,mProtocol=0,mManufacturerName=null,mProductName=USB2.0-Ser!,mVersion=2.54,mSerialNumberReader=android.hardware.usb.IUsbSerialReader$Stub$Proxy@1552fa1,mConfigurations=[
    UsbConfiguration[mId=1,mName=null,mAttributes=128,mMaxPower=48,mInterfaces=[
    UsbInterface[mId=0,mAlternateSetting=0,mName=null,mClass=255,mSubclass=1,mProtocol=2,mEndpoints=[
    UsbEndpoint[mAddress=130,mAttributes=2,mMaxPacketSize=32,mInterval=0]
    UsbEndpoint[mAddress=2,mAttributes=2,mMaxPacketSize=32,mInterval=0]
    UsbEndpoint[mAddress=129,mAttributes=3,mMaxPacketSize=8,mInterval=1]]]]
D/UsbAccessor: Interface(0,0) : UsbInterface[mId=0,mAlternateSetting=0,mName=null,mClass=255,mSubclass=1,mProtocol=2,mEndpoints=[
    UsbEndpoint[mAddress=130,mAttributes=2,mMaxPacketSize=32,mInterval=0]
    UsbEndpoint[mAddress=2,mAttributes=2,mMaxPacketSize=32,mInterval=0]
    UsbEndpoint[mAddress=129,mAttributes=3,mMaxPacketSize=8,mInterval=1]]
    Endpoint(0,0,0) : UsbEndpoint[mAddress=130,mAttributes=2,mMaxPacketSize=32,mInterval=0]
D/UsbAccessor: Device(0) : UsbDevice[mName=/dev/bus/usb/001/002,mVendorId=6790,mProductId=29987,mClass=255,mSubclass=0,mProtocol=0,mManufacturerName=null,mProductName=USB2.0-Ser!,mVersion=2.54,mSerialNumberReader=android.hardware.usb.IUsbSerialReader$Stub$Proxy@d4e85c6,mConfigurations=[
    UsbConfiguration[mId=1,mName=null,mAttributes=128,mMaxPower=48,mInterfaces=[
    UsbInterface[mId=0,mAlternateSetting=0,mName=null,mClass=255,mSubclass=1,mProtocol=2,mEndpoints=[
    UsbEndpoint[mAddress=130,mAttributes=2,mMaxPacketSize=32,mInterval=0]
    UsbEndpoint[mAddress=2,mAttributes=2,mMaxPacketSize=32,mInterval=0]
    UsbEndpoint[mAddress=129,mAttributes=3,mMaxPacketSize=8,mInterval=1]]]]
D/UsbAccessor: Interface(0,0) : UsbInterface[mId=0,mAlternateSetting=0,mName=null,mClass=255,mSubclass=1,mProtocol=2,mEndpoints=[
    UsbEndpoint[mAddress=130,mAttributes=2,mMaxPacketSize=32,mInterval=0]
    UsbEndpoint[mAddress=2,mAttributes=2,mMaxPacketSize=32,mInterval=0]
    UsbEndpoint[mAddress=129,mAttributes=3,mMaxPacketSize=8,mInterval=1]]
D/UsbAccessor: Device(0) : UsbDevice[mName=/dev/bus/usb/001/002,mVendorId=6790,mProductId=29987,mClass=255,mSubclass=0,mProtocol=0,mManufacturerName=null,mProductName=USB2.0-Ser!,mVersion=2.54,mSerialNumberReader=android.hardware.usb.IUsbSerialReader$Stub$Proxy@4557987,mConfigurations=[
    UsbConfiguration[mId=1,mName=null,mAttributes=128,mMaxPower=48,mInterfaces=[
    UsbInterface[mId=0,mAlternateSetting=0,mName=null,mClass=255,mSubclass=1,mProtocol=2,mEndpoints=[
    UsbEndpoint[mAddress=130,mAttributes=2,mMaxPacketSize=32,mInterval=0]
    UsbEndpoint[mAddress=2,mAttributes=2,mMaxPacketSize=32,mInterval=0]
    UsbEndpoint[mAddress=129,mAttributes=3,mMaxPacketSize=8,mInterval=1]]]]
D/UsbAccessor: Interface(0,0) : UsbInterface[mId=0,mAlternateSetting=0,mName=null,mClass=255,mSubclass=1,mProtocol=2,mEndpoints=[
    UsbEndpoint[mAddress=130,mAttributes=2,mMaxPacketSize=32,mInterval=0]
    UsbEndpoint[mAddress=2,mAttributes=2,mMaxPacketSize=32,mInterval=0]
    UsbEndpoint[mAddress=129,mAttributes=3,mMaxPacketSize=8,mInterval=1]]
    Endpoint(0,0,0) : UsbEndpoint[mAddress=130,mAttributes=2,mMaxPacketSize=32,mInterval=0]
D/UsbAccessor: Device(0) : UsbDevice[mName=/dev/bus/usb/001/002,mVendorId=6790,mProductId=29987,mClass=255,mSubclass=0,mProtocol=0,mManufacturerName=null,mProductName=USB2.0-Ser!,mVersion=2.54,mSerialNumberReader=android.hardware.usb.IUsbSerialReader$Stub$Proxy@8d610b4,mConfigurations=[
    UsbConfiguration[mId=1,mName=null,mAttributes=128,mMaxPower=48,mInterfaces=[
    UsbInterface[mId=0,mAlternateSetting=0,mName=null,mClass=255,mSubclass=1,mProtocol=2,mEndpoints=[
    UsbEndpoint[mAddress=130,mAttributes=2,mMaxPacketSize=32,mInterval=0]
    UsbEndpoint[mAddress=2,mAttributes=2,mMaxPacketSize=32,mInterval=0]
    UsbEndpoint[mAddress=129,mAttributes=3,mMaxPacketSize=8,mInterval=1]]]]
D/UsbAccessor: Interface(0,0) : UsbInterface[mId=0,mAlternateSetting=0,mName=null,mClass=255,mSubclass=1,mProtocol=2,mEndpoints=[
    UsbEndpoint[mAddress=130,mAttributes=2,mMaxPacketSize=32,mInterval=0]
    UsbEndpoint[mAddress=2,mAttributes=2,mMaxPacketSize=32,mInterval=0]
    UsbEndpoint[mAddress=129,mAttributes=3,mMaxPacketSize=8,mInterval=1]]
    Endpoint(0,0,1) : UsbEndpoint[mAddress=2,mAttributes=2,mMaxPacketSize=32,mInterval=0]
D/UartWinCH34x: Opening WCH, VID: 6790
    init
D/UartWinCH34x: init r != 2 for 0x5f, r: -1 size: 8 buff: [0, 0, 0, 0, 0, 0, 0, 0]
    Trying VID: 17224
D/UsbCdcConnection: Cannot find VID:17224, PID:0
D/UartWinCH34x: Opening WCH failed
D/AutoCommunicator: Nothing on USB

What I get is that it doesn't receive any data from the Arduino during the init phase. Can someone please help me understanding the problem or redirecting me to some documentations/specifications?

[xxxajk]

D/UartWinCH34x: init r != 2 for 0x5f, r: -1 size: 8 buff: [0, 0, 0, 0, 0, 0, 0, 0]
seems to be the bug with your hardware...

https://github.com/xxxajk/PhysicaloidLibrary/blob/master/PhysicaloidLibrary/src/com/physicaloid/lib/usb/driver/uart/UartWinCH34x.java#L263

:-)

[xxxajk]

Actually, what is the VID:PID?

[davidezanella]

The VID is: 1A86 and PID: 7523

[xxxajk]

Found the issue, I'll have time on Sunday to fix it. Thanks for locating the bug!

[jangminhyeok]

I fixed this problem with below codes in 'UartWinCH34x.java'.

// USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_OUT

private static final byte REQTYPE_HOST_TO_INTERFACE = (byte) (UsbConstants.USB_TYPE_VENDOR | UsbConstants.USB_DIR_OUT);

// USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN

private static final byte REQTYPE_INTERFACE_TO_HOST = (byte) (UsbConstants.USB_TYPE_VENDOR | UsbConstants.USB_DIR_IN);

[xxxajk]

Please make a pull request.