Teensy 4.1 USB host ERROR Followup

**Xantra** · 09-17-2020, 01:04 PM

Hi,
I have an enumeration issue when I plug a Boss Katana amplifier to the USB host of my Teensy 4.1

Code:

USB2 PLL running
 reset waited 6
USBHS_ASYNCLISTADDR = 0
USBHS_PERIODICLISTBASE = 20003000
periodictable = 20003000
Ready
port change: 14001403
    connect
  begin reset
port change: 14001005
  port enabled
  end recovery
new_Device: 1.5 Mbit/sec
new_Pipe
ERROR Followup
    remove from followup list
    stray halted 200034C0
  qtd: 20003480, token=80080180, next=200034C0
  qtd: 200034C0, token=80008080, next=20003500
  dummy halt: 20003500
enumeration:
    remain on followup list
    remain on followup list
    remain on followup list

Here's some info from Linux on this device :

Code:

[  167.356085] usb 1-1.3: new high-speed USB device number 4 using dwc_otg
[  167.488353] usb 1-1.3: New USB device found, idVendor=0582, idProduct=01d8, bcdDevice= 0.00
[  167.488439] usb 1-1.3: New USB device strings: Mfr=1, Product=2, SerialNumber=0
[  167.488465] usb 1-1.3: Product: KATANA
[  167.488487] usb 1-1.3: Manufacturer: BOSS

pi@raspberrypi:~ $ lsusb -v -d 0582:01d8
Bus 001 Device 005: ID 0582:01d8 Roland Corp.
Couldn't open device, some information will be missing
Device Descriptor:
  bLength                18
  bDescriptorType         1
  bcdUSB               2.00
  bDeviceClass          255 Vendor Specific Class
  bDeviceSubClass         0
  bDeviceProtocol       255
  bMaxPacketSize0        64
  idVendor           0x0582 Roland Corp.
  idProduct          0x01d8
  bcdDevice            0.00
  iManufacturer           1
  iProduct                2
  iSerial                 0
  bNumConfigurations      1
  Configuration Descriptor:
    bLength                 9
    bDescriptorType         2
    wTotalLength       0x00bc
    bNumInterfaces          4
    bConfigurationValue     1
    iConfiguration          0
    bmAttributes         0xc0
      Self Powered
    MaxPower                0mA
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        0
      bAlternateSetting       0
      bNumEndpoints           0
      bInterfaceClass       255 Vendor Specific Class
      bInterfaceSubClass    255 Vendor Specific Subclass
      bInterfaceProtocol      0
      iInterface              0
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        1
      bAlternateSetting       0
      bNumEndpoints           0
      bInterfaceClass       255 Vendor Specific Class
      bInterfaceSubClass      2
      bInterfaceProtocol      2
      iInterface              0
      ** UNRECOGNIZED:  06 24 f1 01 00 00
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        1
      bAlternateSetting       1
      bNumEndpoints           1
      bInterfaceClass       255 Vendor Specific Class
      bInterfaceSubClass      2
      bInterfaceProtocol      2
      iInterface              0
      ** UNRECOGNIZED:  07 24 01 01 00 01 00
      ** UNRECOGNIZED:  0b 24 02 01 04 04 18 01 44 ac 00
      ** UNRECOGNIZED:  06 24 f1 04 16 00
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x0d  EP 13 OUT
        bmAttributes            5
          Transfer Type            Isochronous
          Synch Type               Asynchronous
          Usage Type               Data
        wMaxPacketSize     0x0070  1x 112 bytes
        bInterval               1
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        2
      bAlternateSetting       0
      bNumEndpoints           0
      bInterfaceClass       255 Vendor Specific Class
      bInterfaceSubClass      2
      bInterfaceProtocol      1
      iInterface              0
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        2
      bAlternateSetting       1
      bNumEndpoints           1
      bInterfaceClass       255 Vendor Specific Class
      bInterfaceSubClass      2
      bInterfaceProtocol      1
      iInterface              0
      ** UNRECOGNIZED:  07 24 01 07 00 01 00
      ** UNRECOGNIZED:  0b 24 02 01 04 04 18 01 44 ac 00
      ** UNRECOGNIZED:  06 24 f1 04 16 00
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x8e  EP 14 IN
        bmAttributes           37
          Transfer Type            Isochronous
          Synch Type               Asynchronous
          Usage Type               Implicit feedback Data
        wMaxPacketSize     0x0070  1x 112 bytes
        bInterval               1
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        3
      bAlternateSetting       0
      bNumEndpoints           2
      bInterfaceClass       255 Vendor Specific Class
      bInterfaceSubClass      3
      bInterfaceProtocol      0
      iInterface              0
      ** UNRECOGNIZED:  06 24 f1 02 03 03
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x03  EP 3 OUT
        bmAttributes            2
          Transfer Type            Bulk
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0200  1x 512 bytes
        bInterval               1
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x84  EP 4 IN
        bmAttributes            2
          Transfer Type            Bulk
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0200  1x 512 bytes
        bInterval               0
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        3
      bAlternateSetting       1
      bNumEndpoints           2
      bInterfaceClass       255 Vendor Specific Class
      bInterfaceSubClass      3
      bInterfaceProtocol      0
      iInterface              0
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x03  EP 3 OUT
        bmAttributes            3
          Transfer Type            Interrupt
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0200  1x 512 bytes
        bInterval               4
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x85  EP 5 IN
        bmAttributes            3
          Transfer Type            Interrupt
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0200  1x 512 bytes
        bInterval               4

I know this is not class compliant, I'll be dealing with that later, for now I just want Teensy to enumerate it correctly before I work on a custom driver for it.

What could be causing this "ERROR Followup", and where should I look to debug this ? Is there more debug print in the library I can enable to get more details on this ?

Thanks

**KurtE** · 09-17-2020, 02:12 PM

Looks like everything about this USB device is vendor specific...

You already turned on the main debug output code.

But: many of the source files have debug code commented out. As being too verbose...

If it were me, I would probably go into enumeration.cpp And uncomment the few that are there...

Likewise in ehci.cpp especially when that file has the print for ERROR Followup.

Also what sketch are you running? Which USB devices have you added? Reason I ask is if none are added maybe there are not any resources like transfers and the like that can be allocated?

I would probably go into: USBHost::new_Device and add some more prints to see where it is erroring out?
And then localize down to what is failing.

**Xantra** · 09-17-2020, 03:47 PM

Thanks for the advice, I'll give that a go.

Here's the code I use :

Code:

#include "USBHost_t36.h"

USBHost myusb;
USBHub hub1(myusb);
USBHub hub2(myusb);
MIDIDevice midi1(myusb);

void setup() {
  Serial.begin(115200);
  delay(1500);
  myusb.begin();
  Serial.println("Ready");
}

void loop() {
  myusb.Task();
  midi1.read();
}

I noticed that I get different results with different cables.

One cable gives me :

Code:

USB2 PLL running
begin ehci reset reset waited 6
USBHS_ASYNCLISTADDR = 0
USBHS_PERIODICLISTBASE = 20003000
periodictable = 20003000
Ready
port change: 10001803
    connect
timer0
  begin reset
port change: 10001005
  port enabled
timer0
  end recovery
new_Device: 12 Mbit/sec
new_Pipe
  first in async list
new_Control_Transfer
setup address 200033B0
Transfer Followup List 20003540 to 200034C0
    forward:
    20003540 OUT 0
    20003480 IN 8
    200034C0 OUT 0
    backward:
    200034C0 OUT 0
    20003480 IN 8
    20003540 OUT 0

While 2 other cables give me :

Code:

USB2 PLL running
begin ehci reset reset waited 6
USBHS_ASYNCLISTADDR = 0
USBHS_PERIODICLISTBASE = 20003000
periodictable = 20003000
Ready
port change: 14001403
    connect
timer0
  begin reset
port change: 14001005
  port enabled
timer0
  end recovery
new_Device: 1.5 Mbit/sec
new_Pipe
  first in async list
new_Control_Transfer
setup address 200033B0
Transfer Followup List 20003540 to 200034C0
    forward:
    20003540 OUT 0
    20003480 IN 8
    200034C0 OUT 0
    backward:
    200034C0 OUT 0
    20003480 IN 8
    20003540 OUT 0
ERROR Followup
  Followup 20003540    token=80259
    completed
    remove from followup list
    stray halted 200034C0
  qtd: 20003480, token=80080180, next=200034C0
  qtd: 200034C0, token=80008080, next=20003500
  dummy halt: 20003500
enumeration:
00 00 00 00 00 00 00 00 
Transfer @ 200034C0
   next:  20003500
   anext: 1
   token: 800080C0
   bufs:  0,1000,2000,3000,4000
new_Control_Transfer
setup address 200033B0
Transfer Followup List 20003500 to 200022E0
    forward:
    20003500 OUT 0
    200022E0 IN 0
    backward:
    200022E0 IN 0
    20003500 OUT 0
  Followup 20003480    token=80080180
    remain on followup list
  Followup 20003500    token=80280
    remain on followup list
  Followup 200022E0    token=80008180
    remain on followup list

I suspect that the first cable is bad, but let me know what you think.

I'll add some more debug print in the library and keep you posted.

**KurtE** · 09-17-2020, 04:07 PM

I am not sure if it would help much, but I do have a sketch I posted about yesterday (with a PR to add to hopefully next release of Teensyduino), that prints out a lot of information about device when plugged in. Mainly for HID devices, but some of the top level stuff might be useful. And would at least see if it enumerates the devices properly...

You might try running it and see if it at least shows the enumeration being called and if it makes it to enumeration of Interfaces...

**Xantra** · 09-17-2020, 04:28 PM

Sweet, thanks, unfortunately it doesn't print anything when I plug the device in, so as I suspected I'm not completing enumeration at all. It will be handy later though once I solved the enumeration issue.

**Xantra** · 09-17-2020, 07:39 PM

Right, I think I found the problem, I'm an idiot. I soldered my usb socket back to front... Good thing I didn't blow up the Teensy nor the Amp

.
I now have enumeration :

Code:

USB2 PLL running
 reset waited 6
USBHS_ASYNCLISTADDR = 0
USBHS_PERIODICLISTBASE = 20003000
periodictable = 20003000
Ready
port change: 10001803
    connect
  begin reset
port change: 18001205
  port enabled
  end recovery
new_Device: 480 Mbit/sec
new_Pipe
enumeration:
enumeration:
enumeration:
Device Descriptor:
  12 01 00 02 FF 00 FF 40 82 05 D8 01 00 00 01 02 00 01 
    VendorID = 0582, ProductID = 01D8, Version = 0000
    Class/Subclass/Protocol = 255 / 0 / 255
    Number of Configurations = 1
enumeration:
enumeration:
Manufacturer: BOSS
enumeration:
Product: KATANA
enumeration:
Config data length = 188
enumeration:
Configuration Descriptor:
  09 02 BC 00 04 01 00 C0 00 
    NumInterfaces = 4
    ConfigurationValue = 1
  09 04 00 00 00 FF FF 00 00 
    Interface = 0
    Number of endpoints = 0
    Class/Subclass/Protocol = 255 / 255 / 0
  09 04 01 00 00 FF 02 02 00 
    Interface = 1
    Number of endpoints = 0
    Class/Subclass/Protocol = 255 / 2 / 2
  06 24 F1 01 00 00 
  09 04 01 01 01 FF 02 02 00 
    Interface = 1
    Number of endpoints = 1
    Class/Subclass/Protocol = 255 / 2 / 2
  07 24 01 01 00 01 00 
  0B 24 02 01 04 04 18 01 44 AC 00 
  06 24 F1 04 16 00 
  07 05 0D 05 70 00 01 
    Endpoint = 13 OUT
    Type = Isochronous
    Max Size = 112
    Polling Interval = 1
  07 25 01 00 00 00 00 
  09 04 02 00 00 FF 02 01 00 
    Interface = 2
    Number of endpoints = 0
    Class/Subclass/Protocol = 255 / 2 / 1
  09 04 02 01 01 FF 02 01 00 
    Interface = 2
    Number of endpoints = 1
    Class/Subclass/Protocol = 255 / 2 / 1
  07 24 01 07 00 01 00 
  0B 24 02 01 04 04 18 01 44 AC 00 
  06 24 F1 04 16 00 
  07 05 8E 25 70 00 01 
    Endpoint = 14 IN
    Type = Isochronous
    Max Size = 112
    Polling Interval = 1
  07 25 01 00 00 00 00 
  09 04 03 00 02 FF 03 00 00 
    Interface = 3
    Number of endpoints = 2
    Class/Subclass/Protocol = 255 / 3 / 0
  06 24 F1 02 03 03 
  07 05 03 02 00 02 01 
    Endpoint = 3 OUT
    Type = Bulk
    Max Size = 512
    Polling Interval = 1
  07 05 84 02 00 02 00 
    Endpoint = 4 IN
    Type = Bulk
    Max Size = 512
    Polling Interval = 0
  09 04 03 01 02 FF 03 00 00 
    Interface = 3
    Number of endpoints = 2
    Class/Subclass/Protocol = 255 / 3 / 0
  07 05 03 03 00 02 04 
    Endpoint = 3 OUT
    Type = Interrupt
    Max Size = 512
    Polling Interval = 4
  07 05 85 03 00 02 04 
    Endpoint = 5 IN
    Type = Interrupt
    Max Size = 512
    Polling Interval = 4
enumeration:
USBHub memory usage = 960
USBHub claim_device this=200023A0
USBHub memory usage = 960
USBHub claim_device this=20002760
Descriptor 4 = INTERFACE
MIDIDevice claim this=20001CC0
len = 179
  Interface is unknown (might be Yahama)
type: 4, len: 9
This interface is not MIDI
Descriptor 4 = INTERFACE
MIDIDevice claim this=20001CC0
len = 170
  Interface is unknown (might be Yahama)
type: 36, len: 6
    Unknown MIDI CS_INTERFACE descriptor!
Descriptor 36 =  ???
Descriptor 4 = INTERFACE
MIDIDevice claim this=20001CC0
len = 155
  Interface is unknown (might be Yahama)
type: 36, len: 7
    MIDI Header (ignored)
type: 36, len: 11
    MIDI IN Jack (ignored)
type: 36, len: 6
    Unknown MIDI CS_INTERFACE descriptor!
Descriptor 36 =  ???
Descriptor 36 =  ???
Descriptor 36 =  ???
Descriptor 5 = ENDPOINT
Descriptor 37 =  ???
Descriptor 4 = INTERFACE
MIDIDevice claim this=20001CC0
len = 108
  Interface is unknown (might be Yahama)
type: 4, len: 9
This interface is not MIDI
Descriptor 4 = INTERFACE
MIDIDevice claim this=20001CC0
len = 99
  Interface is unknown (might be Yahama)
type: 36, len: 7
    MIDI Header (ignored)
type: 36, len: 11
    MIDI IN Jack (ignored)
type: 36, len: 6
    Unknown MIDI CS_INTERFACE descriptor!
Descriptor 36 =  ???
Descriptor 36 =  ???
Descriptor 36 =  ???
Descriptor 5 = ENDPOINT
Descriptor 37 =  ???
Descriptor 4 = INTERFACE
MIDIDevice claim this=20001CC0
len = 52
  Interface is unknown (might be Yahama)
type: 36, len: 6
    Roland vendor-specific (ignored)
type: 5, len: 7
    MIDI Endpoint: 3
      tx_size = 512
type: 5, len: 7
    MIDI Endpoint: 84
      rx_size = 512
type: 4, len: 9
Descriptor 36 =  ???
Descriptor 5 = ENDPOINT
Descriptor 5 = ENDPOINT
Descriptor 4 = INTERFACE
MIDIDevice claim this=20001CC0
len = 23
  Interface is unknown (might be Yahama)
type: 5, len: 7
    MIDI Endpoint: 3
      tx_size = 512
type: 5, len: 7
    MIDI Endpoint: 85
      rx_size = 512
This interface is not MIDI
Descriptor 5 = ENDPOINT
Descriptor 5 = ENDPOINT

I will now be working on a MIDI driver for this.

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