Problems connecting to mobile phone CDC interface

[benjamindonnachie]

Thank you for this port! Are there any known issues using it as a host to connect to a mobile phone's CDC interface please? I'm using the Arduino port with a Waveshare RP-2040 Zero.

The waveshare is powered and I can get it to enumerate HIDs (mice and keyboard). I pared right down to the bare bones but tuh_cdc_mount_cb() just doesn't seem to be called when the phone is connected as the LED doesn't change colour (debug probe on order!)

This version is based on Adafruit's serial_host_bridge:

#include <FastLED.h>
#define NUM_LEDS 1 // Single LED
#define DATA_PIN 16 // Waveshare RP-2040 Zero

// Define the array of leds
CRGB leds[NUM_LEDS];
int mounted=CRGB::Red;

#include "Adafruit_TinyUSB.h"
Adafruit_USBH_Host USBHost;

// CDC Host object
Adafruit_USBH_CDC SerialHost;

const uint32_t interval_ms = 500;
uint32_t start_ms = 0;
bool led_state = false;

void setup() {
  USBHost.begin(0);
  FastLED.addLeds<WS2812, DATA_PIN, RGB>(leds, NUM_LEDS);  // GRB ordering is typical
  // Initialize SerialHost
  SerialHost.begin(115200);
}

void loop() {
  USBHost.task();

  // Blink every interval ms
  if ( millis() - start_ms >= interval_ms)  {   
  start_ms += interval_ms;

  leds[0] = (led_state ? mounted : CRGB::Black);

  FastLED.show();
  led_state = 1 - led_state; // toggle
  }
}

//--------------------------------------------------------------------+
// TinyUSB Host callbacks
//--------------------------------------------------------------------+
extern "C" {

// Invoked when a device with CDC interface is mounted
// idx is index of cdc interface in the internal pool.
void tuh_cdc_mount_cb(uint8_t idx) {
  // bind SerialHost object to this interface index
  SerialHost.mount(idx);
  leds[0] = CRGB::Green;
}

// Invoked when a device with CDC interface is unmounted
void tuh_cdc_umount_cb(uint8_t idx) {
  SerialHost.umount(idx);
  leds[0] = CRGB::Orange;
}

}

My blinken lights remain firmly on red unless I place similar LED hooks in tuh_mount_cb but then they are only called for 'regular' USB devices.

Thanks!

[IngHK]

can you please post a dump of device's descriptors (easy to do with https://www.uwe-sieber.de/usbtreeview_e.html) and your tusb_config.h?

[benjamindonnachie]

Thanks IngHK. tusb_config.h should pull in "arduino/ports/rp2040/tusb_config_rp2040.h", which I haven't edited:

/*
    The MIT License (MIT)

    Copyright (c) 2018, hathach for Adafruit

    Permission is hereby granted, free of charge, to any person obtaining a copy
    of this software and associated documentation files (the "Software"), to
   deal in the Software without restriction, including without limitation the
   rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
   sell copies of the Software, and to permit persons to whom the Software is
    furnished to do so, subject to the following conditions:

    The above copyright notice and this permission notice shall be included in
    all copies or substantial portions of the Software.

    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
    IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
    FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
    AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
    LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
   FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
   IN THE SOFTWARE.
*/

#ifndef _TUSB_CONFIG_RP2040_H_
#define _TUSB_CONFIG_RP2040_H_

#ifdef __cplusplus
extern "C" {
#endif

//--------------------------------------------------------------------
// COMMON CONFIGURATION
//--------------------------------------------------------------------

#ifdef USE_TINYUSB_HOST
// native as host
#define CFG_TUD_ENABLED 0
#define CFG_TUH_ENABLED 1
#define CFG_TUH_RPI_PIO_USB 0

#else
// native as device
#define CFG_TUD_ENABLED 1

#if __has_include("pio_usb.h")
// Enable host stack with pio-usb if Pico-PIO-USB library is available
#define CFG_TUH_ENABLED 1
#define CFG_TUH_RPI_PIO_USB 1

#else
// Otherwise enable host controller with MAX3421E
#define CFG_TUH_ENABLED 1
#define CFG_TUH_MAX3421 1

#endif // pio_usb.h
#endif // USE_TINYUSB_HOST

#ifndef CFG_TUSB_MCU
#define CFG_TUSB_MCU OPT_MCU_RP2040
#endif

#ifndef CFG_TUSB_OS
#define CFG_TUSB_OS OPT_OS_PICO
#endif

#ifndef CFG_TUSB_DEBUG
#define CFG_TUSB_DEBUG 0
#endif

// For selectively disable device log (when > CFG_TUSB_DEBUG)
// #define CFG_TUD_LOG_LEVEL 3
// #define CFG_TUH_LOG_LEVEL 3

#define CFG_TUSB_MEM_SECTION
#define CFG_TUSB_MEM_ALIGN TU_ATTR_ALIGNED(4)

//--------------------------------------------------------------------
// Device Configuration
//--------------------------------------------------------------------

#define CFG_TUD_ENDOINT0_SIZE 64

#define CFG_TUD_CDC 1
#define CFG_TUD_MSC 1
#define CFG_TUD_HID 2
#define CFG_TUD_MIDI 1
#define CFG_TUD_VENDOR 1
// #define CFG_TUD_VIDEO 1

// CDC FIFO size of TX and RX
#define CFG_TUD_CDC_RX_BUFSIZE 256
#define CFG_TUD_CDC_TX_BUFSIZE 256

// MSC Buffer size of Device Mass storage
#define CFG_TUD_MSC_EP_BUFSIZE 512

// HID buffer size Should be sufficient to hold ID (if any) + Data
#define CFG_TUD_HID_EP_BUFSIZE 64

// MIDI FIFO size of TX and RX
#define CFG_TUD_MIDI_RX_BUFSIZE 128
#define CFG_TUD_MIDI_TX_BUFSIZE 128

// Vendor FIFO size of TX and RX
#define CFG_TUD_VENDOR_RX_BUFSIZE 64
#define CFG_TUD_VENDOR_TX_BUFSIZE 64

//--------------------------------------------------------------------
// Host Configuration
//--------------------------------------------------------------------

// Size of buffer to hold descriptors and other data used for enumeration
#define CFG_TUH_ENUMERATION_BUFSIZE 256

// Number of hub devices
#define CFG_TUH_HUB 1

// max device support (excluding hub device): 1 hub typically has 4 ports
#define CFG_TUH_DEVICE_MAX (3 * CFG_TUH_HUB + 1)

// Enable tuh_edpt_xfer() API
// #define CFG_TUH_API_EDPT_XFER       1

// Number of mass storage
#define CFG_TUH_MSC 1

// Number of HIDs
// typical keyboard + mouse device can have 3,4 HID interfaces
#define CFG_TUH_HID (3 * CFG_TUH_DEVICE_MAX)

// Number of CDC interfaces
// FTDI and CP210x are not part of CDC class, only to re-use CDC driver API
#define CFG_TUH_CDC 1
#define CFG_TUH_CDC_FTDI 1
#define CFG_TUH_CDC_CP210X 1
#define CFG_TUH_CDC_CH34X 1

// RX & TX fifo size
#define CFG_TUH_CDC_RX_BUFSIZE 128
#define CFG_TUH_CDC_TX_BUFSIZE 128

// Set Line Control state on enumeration/mounted:
// DTR ( bit 0), RTS (bit 1)
#define CFG_TUH_CDC_LINE_CONTROL_ON_ENUM 0x03

// Set Line Coding on enumeration/mounted, value for cdc_line_coding_t
// bit rate = 115200, 1 stop bit, no parity, 8 bit data width
// This need Pico-PIO-USB at least 0.5.1
#define CFG_TUH_CDC_LINE_CODING_ON_ENUM                                        \
  { 115200, CDC_LINE_CODING_STOP_BITS_1, CDC_LINE_CODING_PARITY_NONE, 8 }

#ifdef __cplusplus
}
#endif

#endif /* _TUSB_CONFIG_RP2040_H_ */

Here's the info from USBview:

    =========================== USB Port1 ===========================

Connection Status        : 0x01 (Device is connected)
Port Chain               : 1-1
Properties               : 0x09
 IsUserConnectable       : yes
 PortIsDebugCapable      : no
 PortHasMultiCompanions  : no
 PortConnectorIsTypeC    : yes
ConnectionIndex          : 0x01 (Port 1)
CompanionIndex           : 0
 CompanionHubSymLnk      : USB#ROOT_HUB30#4&2aef6ccc&0&0#{f18a0e88-c30c-11d0-8815-00a0c906bed8}
 CompanionPortNumber     : 0x10 (Port 16)
 -> CompanionPortChain   : 1-16

      ========================== Summary =========================
Vendor ID                : 0x04E8 (Samsung Electronics Co., Ltd.)
Product ID               : 0x6860
USB Version              : 2.0
Port maximum Speed       : High-Speed (Companion Port 1-16 supports SuperSpeed)
Device maximum Speed     : High-Speed
Device Connection Speed  : High-Speed
Self powered             : yes
Demanded Current         : 0 mA
Used Endpoints           : 9

      ======================== USB Device ========================

        +++++++++++++++++ Device Information ++++++++++++++++++
Device Description       : SAMSUNG Mobile USB Composite Device
Device Path 1            : \\?\USB#VID_04E8&PID_6860#xxxxxxxxxxx#{a5dcbf10-6530-11d2-901f-00c04fb951ed} (GUID_DEVINTERFACE_USB_DEVICE)
Device Path 2            : \\?\USB#VID_04E8&PID_6860#xxxxxxxxxxx#{c9c19988-aeba-4731-aad6-db79968703c6}
Kernel Name              : \Device\USBPDO-2
Device ID                : USB\VID_04E8&PID_6860\xxxxxxxxxxx
Hardware IDs             : USB\VID_04E8&PID_6860&REV_0400 USB\VID_04E8&PID_6860
Driver KeyName           : {36fc9e60-c465-11cf-8056-444553540000}\0019 (GUID_DEVCLASS_USB)
Driver                   : \SystemRoot\system32\DRIVERS\ssudbus2.sys (Version: 2.19.1.0  Date: 2022-09-30  Company: Samsung Electronics Co., Ltd.)
Driver Inf               : C:\WINDOWS\inf\oem103.inf
Legacy BusType           : PNPBus
Class                    : USB
Class GUID               : {36fc9e60-c465-11cf-8056-444553540000} (GUID_DEVCLASS_USB)
Service                  : dg_ssudbus
Enumerator               : USB
Location Info            : Port_#0001.Hub_#0001
Address                  : 1
Location IDs             : PCIROOT(0)#PCI(1400)#USBROOT(0)#USB(1), ACPI(_SB_)#ACPI(PCI0)#ACPI(XHC_)#ACPI(RHUB)#ACPI(HS01)
Container ID             : {1366d241-c3e7-5e90-9732-c325a171412d}
Manufacturer Info        : SAMSUNG Electronics Co., Ltd. 
Capabilities             : 0x94 (Removable, UniqueID, SurpriseRemovalOK)
Status                   : 0x0180600A (DN_DRIVER_LOADED, DN_STARTED, DN_DISABLEABLE, DN_REMOVABLE, DN_NT_ENUMERATOR, DN_NT_DRIVER)
Problem Code             : 0
Address                  : 1
Power State              : D0 (supported: D0, D3, wake from D0)

        +++++++++++++++++ Registry USB Flags +++++++++++++++++
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\usbflags\04E868600400
 osvc                    : REG_BINARY 01 01
 SkipContainerIdQuery    : REG_BINARY 01 00

        ---------------- Connection Information ---------------
Connection Index         : 0x01 (Port 1)
Connection Status        : 0x01 (DeviceConnected)
Current Config Value     : 0x01 (Configuration 1)
Device Address           : 0x06 (6)
Is Hub                   : 0x00 (no)
Device Bus Speed         : 0x02 (High-Speed)
Number of open Pipes     : 0x08 (8 pipes to data endpoints)
Pipe[0]                  : EndpointID=1  Direction=IN   ScheduleOffset=0  Type=Bulk       wMaxPacketSize=0x200   bInterval=0  
Pipe[1]                  : EndpointID=1  Direction=OUT  ScheduleOffset=0  Type=Bulk       wMaxPacketSize=0x200   bInterval=1  
Pipe[2]                  : EndpointID=2  Direction=IN   ScheduleOffset=0  Type=Interrupt  wMaxPacketSize=0x1C    bInterval=6   -> 382 Bits/ms = 47750 Bytes/s
Pipe[3]                  : EndpointID=4  Direction=IN   ScheduleOffset=0  Type=Interrupt  wMaxPacketSize=0xA     bInterval=9   -> 214 Bits/ms = 26750 Bytes/s
Pipe[4]                  : EndpointID=3  Direction=IN   ScheduleOffset=0  Type=Bulk       wMaxPacketSize=0x200   bInterval=0  
Pipe[5]                  : EndpointID=2  Direction=OUT  ScheduleOffset=0  Type=Bulk       wMaxPacketSize=0x200   bInterval=0  
Pipe[6]                  : EndpointID=3  Direction=OUT  ScheduleOffset=0  Type=Bulk       wMaxPacketSize=0x200   bInterval=0  
Pipe[7]                  : EndpointID=5  Direction=IN   ScheduleOffset=0  Type=Bulk       wMaxPacketSize=0x200   bInterval=0  
Data (HexDump)           : 01 00 00 00 12 01 00 02 00 00 00 40 E8 04 60 68   ...........@..`h
                           00 04 01 02 03 01 01 02 00 06 00 08 00 00 00 01   ................
                           00 00 00 07 05 81 02 00 02 00 00 00 00 00 07 05   ................
                           01 02 00 02 01 00 00 00 00 07 05 82 03 1C 00 06   ................
                           00 00 00 00 07 05 84 03 0A 00 09 00 00 00 00 07   ................
                           05 83 02 00 02 00 00 00 00 00 07 05 02 02 00 02   ................
                           00 00 00 00 00 07 05 03 02 00 02 00 00 00 00 00   ................
                           07 05 85 02 00 02 00 00 00 00 00                  ...........

        --------------- Connection Information V2 -------------
Connection Index         : 0x01 (1)
Length                   : 0x10 (16 bytes)
SupportedUsbProtocols    : 0x03
 Usb110                  : 1 (yes, port supports USB 1.1)
 Usb200                  : 1 (yes, port supports USB 2.0)
 Usb300                  : 0 (no, port not supports USB 3.0) -> but Companion Port 1-16 does
 ReservedMBZ             : 0x00
Flags                    : 0x00
 DevIsOpAtSsOrHigher     : 0 (Device is not operating at SuperSpeed or higher)
 DevIsSsCapOrHigher      : 0 (Device is not SuperSpeed capable or higher)
 DevIsOpAtSsPlusOrHigher : 0 (Device is not operating at SuperSpeedPlus or higher)
 DevIsSsPlusCapOrHigher  : 0 (Device is not SuperSpeedPlus capable or higher)
 ReservedMBZ             : 0x00
Data (HexDump)           : 01 00 00 00 10 00 00 00 03 00 00 00 00 00 00 00   ................

    ---------------------- Device Descriptor ----------------------
bLength                  : 0x12 (18 bytes)
bDescriptorType          : 0x01 (Device Descriptor)
bcdUSB                   : 0x200 (USB Version 2.0)
bDeviceClass             : 0x00 (defined by the interface descriptors)
bDeviceSubClass          : 0x00
bDeviceProtocol          : 0x00
bMaxPacketSize0          : 0x40 (64 bytes)
idVendor                 : 0x04E8 (Samsung Electronics Co., Ltd.)
idProduct                : 0x6860
bcdDevice                : 0x0400
iManufacturer            : 0x01 (String Descriptor 1)
 Language 0x0409         : "SAMSUNG"
iProduct                 : 0x02 (String Descriptor 2)
 Language 0x0409         : "SAMSUNG_Android"
iSerialNumber            : 0x03 (String Descriptor 3)
 Language 0x0409         : "xxxxxxxxxxx"
bNumConfigurations       : 0x01 (1 Configuration)
Data (HexDump)           : 12 01 00 02 00 00 00 40 E8 04 60 68 00 04 01 02   .......@..`h....
                           03 01                                             ..

    ------------------ Configuration Descriptor -------------------
bLength                  : 0x09 (9 bytes)
bDescriptorType          : 0x02 (Configuration Descriptor)
wTotalLength             : 0x0088 (136 bytes)
bNumInterfaces           : 0x04 (4 Interfaces)
bConfigurationValue      : 0x01 (Configuration 1)
iConfiguration           : 0x04 (String Descriptor 4)
 Language 0x0409         : "Conf 1"
bmAttributes             : 0xC0
 D7: Reserved, set 1     : 0x01
 D6: Self Powered        : 0x01 (yes)
 D5: Remote Wakeup       : 0x00 (no)
 D4..0: Reserved, set 0  : 0x00
MaxPower                 : 0x00 (0 mA)
Data (HexDump)           : 09 02 88 00 04 01 04 C0 00 09 04 00 00 03 06 01   ................
                           01 05 07 05 81 02 00 02 00 07 05 01 02 00 02 01   ................
                           07 05 82 03 1C 00 06 08 24 80 0C 00 01 00 01 08   ........$.......
                           0B 01 02 02 02 01 08 09 04 01 00 01 02 02 01 06   ................
                           05 24 00 10 01 05 24 01 00 02 04 24 02 02 05 24   .$....$....$...$
                           06 01 02 07 05 84 03 0A 00 09 09 04 02 00 02 0A   ................
                           00 00 07 07 05 83 02 00 02 00 07 05 02 02 00 02   ................
                           00 09 04 03 00 02 FF 42 01 0A 07 05 03 02 00 02   .......B........
                           00 07 05 85 02 00 02 00                           ........

        ---------------- Interface Descriptor -----------------
bLength                  : 0x09 (9 bytes)
bDescriptorType          : 0x04 (Interface Descriptor)
bInterfaceNumber         : 0x00 (Interface 0)
bAlternateSetting        : 0x00
bNumEndpoints            : 0x03 (3 Endpoints)
bInterfaceClass          : 0x06 (Image)
bInterfaceSubClass       : 0x01 (Still Imaging device)
bInterfaceProtocol       : 0x01
iInterface               : 0x05 (String Descriptor 5)
 Language 0x0409         : "MTP"
Data (HexDump)           : 09 04 00 00 03 06 01 01 05                        .........

        ----------------- Endpoint Descriptor -----------------
bLength                  : 0x07 (7 bytes)
bDescriptorType          : 0x05 (Endpoint Descriptor)
bEndpointAddress         : 0x81 (Direction=IN EndpointID=1)
bmAttributes             : 0x02 (TransferType=Bulk)
wMaxPacketSize           : 0x0200 (max 512 bytes)
bInterval                : 0x00 (never NAKs)
Data (HexDump)           : 07 05 81 02 00 02 00                              .......

        ----------------- Endpoint Descriptor -----------------
bLength                  : 0x07 (7 bytes)
bDescriptorType          : 0x05 (Endpoint Descriptor)
bEndpointAddress         : 0x01 (Direction=OUT EndpointID=1)
bmAttributes             : 0x02 (TransferType=Bulk)
wMaxPacketSize           : 0x0200 (max 512 bytes)
bInterval                : 0x01 (at most 1 NAK each 1 microframe -> 0.125 ms)
Data (HexDump)           : 07 05 01 02 00 02 01                              .......

        ----------------- Endpoint Descriptor -----------------
bLength                  : 0x07 (7 bytes)
bDescriptorType          : 0x05 (Endpoint Descriptor)
bEndpointAddress         : 0x82 (Direction=IN EndpointID=2)
bmAttributes             : 0x03 (TransferType=Interrupt)
wMaxPacketSize           : 0x001C
 Bits 15..13             : 0x00 (reserved, must be zero)
 Bits 12..11             : 0x00 (0 additional transactions per microframe -> allows 1..1024 bytes per packet)
 Bits 10..0              : 0x1C (28 bytes per packet)
bInterval                : 0x06 (32 microframes -> 4 ms)
Data (HexDump)           : 07 05 82 03 1C 00 06                              .......

        ----------------- Unknown Descriptor ------------------
bLength                  : 0x08 (8 bytes)
bDescriptorType          : 0x24
Data (HexDump)           : 08 24 80 0C 00 01 00 01 

        ------------------- IAD Descriptor --------------------
bLength                  : 0x08 (8 bytes)
bDescriptorType          : 0x0B (Interface Association Descriptor)
bFirstInterface          : 0x01 (Interface 1)
bInterfaceCount          : 0x02 (2 Interfaces)
bFunctionClass           : 0x02 (Communications and CDC Control)
bFunctionSubClass        : 0x02
bFunctionProtocol        : 0x01
iFunction                : 0x08 (String Descriptor 8)
 Language 0x0409         : "CDC Serial"
Data (HexDump)           : 08 0B 01 02 02 02 01 08                           ........

        ---------------- Interface Descriptor -----------------
bLength                  : 0x09 (9 bytes)
bDescriptorType          : 0x04 (Interface Descriptor)
bInterfaceNumber         : 0x01 (Interface 1)
bAlternateSetting        : 0x00
bNumEndpoints            : 0x01 (1 Endpoint)
bInterfaceClass          : 0x02 (Communications and CDC Control)
bInterfaceSubClass       : 0x02 (Abstract Control Model)
bInterfaceProtocol       : 0x01 (AT Commands defined by ITU-T V.250 etc)
iInterface               : 0x06 (String Descriptor 6)
 Language 0x0409         : "CDC Abstract Control Model (ACM)"
Data (HexDump)           : 09 04 01 00 01 02 02 01 06                        .........

        -------------- CDC Interface Descriptor ---------------
bFunctionLength          : 0x05 (5 bytes)
bDescriptorType          : 0x24 (Interface)
bDescriptorSubType       : 0x00 (Header Functional Descriptor)
bcdCDC                   : 0x110 (CDC Version 1.10)
Data (HexDump)           : 05 24 00 10 01                                    .$...

        -------------- CDC Interface Descriptor ---------------
bFunctionLength          : 0x05 (5 bytes)
bDescriptorType          : 0x24 (Interface)
bDescriptorSubType       : 0x01 (Call Management Functional Descriptor)
bmCapabilities           : 0x00
 D7..2                   : 0x00 (Reserved)
 D1                      : 0x00 (sends/receives call management information only over the Communication Class interface)
 D0                      : 0x00 (does not handle call management itself)
bDataInterface           : 0x02
Data (HexDump)           : 05 24 01 00 02                                    .$...

        -------------- CDC Interface Descriptor ---------------
bFunctionLength          : 0x04 (4 bytes)
bDescriptorType          : 0x24 (Interface)
bDescriptorSubType       : 0x02 (Abstract Control Management Functional Descriptor)
bmCapabilities           : 0x02
 D7..4                   : 0x00 (Reserved)
 D3                      : 0x00 (not supports the notification Network_Connection)
 D2                      : 0x00 (not supports the request Send_Break)
 D1                      : 0x01 (supports the request combination of Set_Line_Coding, Set_Control_Line_State, Get_Line_Coding, and the notification Serial_State)
 D0                      : 0x00 (not supports the request combination of Set_Comm_Feature, Clear_Comm_Feature, and Get_Comm_Feature)
Data (HexDump)           : 04 24 02 02                                       .$..

        -------------- CDC Interface Descriptor ---------------
bFunctionLength          : 0x05 (5 bytes)
bDescriptorType          : 0x24 (Interface)
bDescriptorSubType       : 0x06 (Union Functional Descriptor)
bControlInterface        : 0x01
bSubordinateInterface[0] : 0x02
Data (HexDump)           : 05 24 06 01 02                                    .$...

        ----------------- Endpoint Descriptor -----------------
bLength                  : 0x07 (7 bytes)
bDescriptorType          : 0x05 (Endpoint Descriptor)
bEndpointAddress         : 0x84 (Direction=IN EndpointID=4)
bmAttributes             : 0x03 (TransferType=Interrupt)
wMaxPacketSize           : 0x000A
 Bits 15..13             : 0x00 (reserved, must be zero)
 Bits 12..11             : 0x00 (0 additional transactions per microframe -> allows 1..1024 bytes per packet)
 Bits 10..0              : 0x0A (10 bytes per packet)
bInterval                : 0x09 (256 microframes -> 32 ms)
Data (HexDump)           : 07 05 84 03 0A 00 09                              .......

        ---------------- Interface Descriptor -----------------
bLength                  : 0x09 (9 bytes)
bDescriptorType          : 0x04 (Interface Descriptor)
bInterfaceNumber         : 0x02 (Interface 2)
bAlternateSetting        : 0x00
bNumEndpoints            : 0x02 (2 Endpoints)
bInterfaceClass          : 0x0A (CDC-Data)
bInterfaceSubClass       : 0x00
bInterfaceProtocol       : 0x00
iInterface               : 0x07 (String Descriptor 7)
 Language 0x0409         : "CDC ACM Data"
Data (HexDump)           : 09 04 02 00 02 0A 00 00 07                        .........

        ----------------- Endpoint Descriptor -----------------
bLength                  : 0x07 (7 bytes)
bDescriptorType          : 0x05 (Endpoint Descriptor)
bEndpointAddress         : 0x83 (Direction=IN EndpointID=3)
bmAttributes             : 0x02 (TransferType=Bulk)
wMaxPacketSize           : 0x0200 (max 512 bytes)
bInterval                : 0x00 (never NAKs)
Data (HexDump)           : 07 05 83 02 00 02 00                              .......

        ----------------- Endpoint Descriptor -----------------
bLength                  : 0x07 (7 bytes)
bDescriptorType          : 0x05 (Endpoint Descriptor)
bEndpointAddress         : 0x02 (Direction=OUT EndpointID=2)
bmAttributes             : 0x02 (TransferType=Bulk)
wMaxPacketSize           : 0x0200 (max 512 bytes)
bInterval                : 0x00 (never NAKs)
Data (HexDump)           : 07 05 02 02 00 02 00                              .......

        ---------------- Interface Descriptor -----------------
bLength                  : 0x09 (9 bytes)
bDescriptorType          : 0x04 (Interface Descriptor)
bInterfaceNumber         : 0x03 (Interface 3)
bAlternateSetting        : 0x00
bNumEndpoints            : 0x02 (2 Endpoints)
bInterfaceClass          : 0xFF (Vendor Specific)
bInterfaceSubClass       : 0x42
bInterfaceProtocol       : 0x01
iInterface               : 0x0A (String Descriptor 10)
 Language 0x0409         : "ADB Interface"
Data (HexDump)           : 09 04 03 00 02 FF 42 01 0A                        ......B..

        ----------------- Endpoint Descriptor -----------------
bLength                  : 0x07 (7 bytes)
bDescriptorType          : 0x05 (Endpoint Descriptor)
bEndpointAddress         : 0x03 (Direction=OUT EndpointID=3)
bmAttributes             : 0x02 (TransferType=Bulk)
wMaxPacketSize           : 0x0200 (max 512 bytes)
bInterval                : 0x00 (never NAKs)
Data (HexDump)           : 07 05 03 02 00 02 00                              .......

        ----------------- Endpoint Descriptor -----------------
bLength                  : 0x07 (7 bytes)
bDescriptorType          : 0x05 (Endpoint Descriptor)
bEndpointAddress         : 0x85 (Direction=IN EndpointID=5)
bmAttributes             : 0x02 (TransferType=Bulk)
wMaxPacketSize           : 0x0200 (max 512 bytes)
bInterval                : 0x00 (never NAKs)
Data (HexDump)           : 07 05 85 02 00 02 00                              .......

    --------- Device Qualifier Descriptor (for Full-Speed) --------
bLength                  : 0x0A (10 bytes)
bDescriptorType          : 0x06 (Device_qualifier Descriptor)
bcdUSB                   : 0x200 (USB Version 2.00)
bDeviceClass             : 0x00 (defined by the interface descriptors)
bDeviceSubClass          : 0x00
bDeviceProtocol          : 0x00
bMaxPacketSize0          : 0x40 (64 Bytes)
bNumConfigurations       : 0x01 (1 other-speed configuration)
bReserved                : 0x00
Data (HexDump)           : 0A 06 00 02 00 00 00 40 01 00                     .......@..

    ------------ Other Speed Configuration Descriptor -------------
bLength                  : 0x09 (9 bytes)
bDescriptorType          : 0x07 (Other_speed_configuration Descriptor)
wTotalLength             : 0x0080 (128 bytes)
bNumInterfaces           : 0x04 (4 Interfaces)
bConfigurationValue      : 0x01 (Configuration 1)
iConfiguration           : 0x04 (String Descriptor 4)
 Language 0x0409         : "Conf 1"
bmAttributes             : 0xC0
 D7: Reserved, set 1     : 0x01
 D6: Self Powered        : 0x01 (yes)
 D5: Remote Wakeup       : 0x00 (no)
 D4..0: Reserved, set 0  : 0x00
MaxPower                 : 0x00 (0 mA)
Data (HexDump)           : 09 07 80 00 04 01 04 C0 00 09 04 00 00 03 06 01   ................
                           01 05 07 05 81 02 40 00 00 07 05 01 02 40 00 00   ......@......@..
                           07 05 82 03 1C 00 06 08 0B 01 02 02 02 01 08 09   ................
                           04 01 00 01 02 02 01 06 05 24 00 10 01 05 24 01   .........$....$.
                           00 02 04 24 02 02 05 24 06 01 02 07 05 84 03 0A   ...$...$........
                           00 20 09 04 02 00 02 0A 00 00 07 07 05 83 02 40   . .............@
                           00 00 07 05 02 02 40 00 00 09 04 03 00 02 FF 42   ......@........B
                           01 0A 07 05 03 02 40 00 00 07 05 85 02 40 00 00   ......@......@..

        ---------------- Interface Descriptor -----------------
bLength                  : 0x09 (9 bytes)
bDescriptorType          : 0x04 (Interface Descriptor)
bInterfaceNumber         : 0x00 (Interface 0)
bAlternateSetting        : 0x00
bNumEndpoints            : 0x03 (3 Endpoints)
bInterfaceClass          : 0x06 (Image)
bInterfaceSubClass       : 0x01 (Still Imaging device)
bInterfaceProtocol       : 0x01
iInterface               : 0x05 (String Descriptor 5)
 Language 0x0409         : "MTP"
Data (HexDump)           : 09 04 00 00 03 06 01 01 05                        .........

        ----------------- Endpoint Descriptor -----------------
bLength                  : 0x07 (7 bytes)
bDescriptorType          : 0x05 (Endpoint Descriptor)
bEndpointAddress         : 0x81 (Direction=IN EndpointID=1)
bmAttributes             : 0x02 (TransferType=Bulk)
wMaxPacketSize           : 0x0040 (64 bytes)
bInterval                : 0x00 (ignored)
Data (HexDump)           : 07 05 81 02 40 00 00                              ....@..

        ----------------- Endpoint Descriptor -----------------
bLength                  : 0x07 (7 bytes)
bDescriptorType          : 0x05 (Endpoint Descriptor)
bEndpointAddress         : 0x01 (Direction=OUT EndpointID=1)
bmAttributes             : 0x02 (TransferType=Bulk)
wMaxPacketSize           : 0x0040 (64 bytes)
bInterval                : 0x00 (ignored)
Data (HexDump)           : 07 05 01 02 40 00 00                              ....@..

        ----------------- Endpoint Descriptor -----------------
bLength                  : 0x07 (7 bytes)
bDescriptorType          : 0x05 (Endpoint Descriptor)
bEndpointAddress         : 0x82 (Direction=IN EndpointID=2)
bmAttributes             : 0x03 (TransferType=Interrupt)
wMaxPacketSize           : 0x001C (28 bytes)
bInterval                : 0x06 (6 ms)
Data (HexDump)           : 07 05 82 03 1C 00 06                              .......

        ------------------- IAD Descriptor --------------------
bLength                  : 0x08 (8 bytes)
bDescriptorType          : 0x0B (Interface Association Descriptor)
bFirstInterface          : 0x01 (Interface 1)
bInterfaceCount          : 0x02 (2 Interfaces)
bFunctionClass           : 0x02 (Communications and CDC Control)
bFunctionSubClass        : 0x02
bFunctionProtocol        : 0x01
iFunction                : 0x08 (String Descriptor 8)
 Language 0x0409         : "CDC Serial"
Data (HexDump)           : 08 0B 01 02 02 02 01 08                           ........

        ---------------- Interface Descriptor -----------------
bLength                  : 0x09 (9 bytes)
bDescriptorType          : 0x04 (Interface Descriptor)
bInterfaceNumber         : 0x01 (Interface 1)
bAlternateSetting        : 0x00
bNumEndpoints            : 0x01 (1 Endpoint)
bInterfaceClass          : 0x02 (Communications and CDC Control)
bInterfaceSubClass       : 0x02 (Abstract Control Model)
bInterfaceProtocol       : 0x01 (AT Commands defined by ITU-T V.250 etc)
iInterface               : 0x06 (String Descriptor 6)
 Language 0x0409         : "CDC Abstract Control Model (ACM)"
Data (HexDump)           : 09 04 01 00 01 02 02 01 06                        .........

        -------------- CDC Interface Descriptor ---------------
bFunctionLength          : 0x05 (5 bytes)
bDescriptorType          : 0x24 (Interface)
bDescriptorSubType       : 0x00 (Header Functional Descriptor)
bcdCDC                   : 0x110 (CDC Version 1.10)
Data (HexDump)           : 05 24 00 10 01                                    .$...

        -------------- CDC Interface Descriptor ---------------
bFunctionLength          : 0x05 (5 bytes)
bDescriptorType          : 0x24 (Interface)
bDescriptorSubType       : 0x01 (Call Management Functional Descriptor)
bmCapabilities           : 0x00
 D7..2                   : 0x00 (Reserved)
 D1                      : 0x00 (sends/receives call management information only over the Communication Class interface)
 D0                      : 0x00 (does not handle call management itself)
bDataInterface           : 0x02
Data (HexDump)           : 05 24 01 00 02                                    .$...

        -------------- CDC Interface Descriptor ---------------
bFunctionLength          : 0x04 (4 bytes)
bDescriptorType          : 0x24 (Interface)
bDescriptorSubType       : 0x02 (Abstract Control Management Functional Descriptor)
bmCapabilities           : 0x02
 D7..4                   : 0x00 (Reserved)
 D3                      : 0x00 (not supports the notification Network_Connection)
 D2                      : 0x00 (not supports the request Send_Break)
 D1                      : 0x01 (supports the request combination of Set_Line_Coding, Set_Control_Line_State, Get_Line_Coding, and the notification Serial_State)
 D0                      : 0x00 (not supports the request combination of Set_Comm_Feature, Clear_Comm_Feature, and Get_Comm_Feature)
Data (HexDump)           : 04 24 02 02                                       .$..

        -------------- CDC Interface Descriptor ---------------
bFunctionLength          : 0x05 (5 bytes)
bDescriptorType          : 0x24 (Interface)
bDescriptorSubType       : 0x06 (Union Functional Descriptor)
bControlInterface        : 0x01
bSubordinateInterface[0] : 0x02
Data (HexDump)           : 05 24 06 01 02                                    .$...

        ----------------- Endpoint Descriptor -----------------
bLength                  : 0x07 (7 bytes)
bDescriptorType          : 0x05 (Endpoint Descriptor)
bEndpointAddress         : 0x84 (Direction=IN EndpointID=4)
bmAttributes             : 0x03 (TransferType=Interrupt)
wMaxPacketSize           : 0x000A (10 bytes)
bInterval                : 0x20 (32 ms)
Data (HexDump)           : 07 05 84 03 0A 00 20                              ...... 

        ---------------- Interface Descriptor -----------------
bLength                  : 0x09 (9 bytes)
bDescriptorType          : 0x04 (Interface Descriptor)
bInterfaceNumber         : 0x02 (Interface 2)
bAlternateSetting        : 0x00
bNumEndpoints            : 0x02 (2 Endpoints)
bInterfaceClass          : 0x0A (CDC-Data)
bInterfaceSubClass       : 0x00
bInterfaceProtocol       : 0x00
iInterface               : 0x07 (String Descriptor 7)
 Language 0x0409         : "CDC ACM Data"
Data (HexDump)           : 09 04 02 00 02 0A 00 00 07                        .........

        ----------------- Endpoint Descriptor -----------------
bLength                  : 0x07 (7 bytes)
bDescriptorType          : 0x05 (Endpoint Descriptor)
bEndpointAddress         : 0x83 (Direction=IN EndpointID=3)
bmAttributes             : 0x02 (TransferType=Bulk)
wMaxPacketSize           : 0x0040 (64 bytes)
bInterval                : 0x00 (ignored)
Data (HexDump)           : 07 05 83 02 40 00 00                              ....@..

        ----------------- Endpoint Descriptor -----------------
bLength                  : 0x07 (7 bytes)
bDescriptorType          : 0x05 (Endpoint Descriptor)
bEndpointAddress         : 0x02 (Direction=OUT EndpointID=2)
bmAttributes             : 0x02 (TransferType=Bulk)
wMaxPacketSize           : 0x0040 (64 bytes)
bInterval                : 0x00 (ignored)
Data (HexDump)           : 07 05 02 02 40 00 00                              ....@..

        ---------------- Interface Descriptor -----------------
bLength                  : 0x09 (9 bytes)
bDescriptorType          : 0x04 (Interface Descriptor)
bInterfaceNumber         : 0x03 (Interface 3)
bAlternateSetting        : 0x00
bNumEndpoints            : 0x02 (2 Endpoints)
bInterfaceClass          : 0xFF (Vendor Specific)
bInterfaceSubClass       : 0x42
bInterfaceProtocol       : 0x01
iInterface               : 0x0A (String Descriptor 10)
 Language 0x0409         : "ADB Interface"
Data (HexDump)           : 09 04 03 00 02 FF 42 01 0A                        ......B..

        ----------------- Endpoint Descriptor -----------------
bLength                  : 0x07 (7 bytes)
bDescriptorType          : 0x05 (Endpoint Descriptor)
bEndpointAddress         : 0x03 (Direction=OUT EndpointID=3)
bmAttributes             : 0x02 (TransferType=Bulk)
wMaxPacketSize           : 0x0040 (64 bytes)
bInterval                : 0x00 (ignored)
Data (HexDump)           : 07 05 03 02 40 00 00                              ....@..

        ----------------- Endpoint Descriptor -----------------
bLength                  : 0x07 (7 bytes)
bDescriptorType          : 0x05 (Endpoint Descriptor)
bEndpointAddress         : 0x85 (Direction=IN EndpointID=5)
bmAttributes             : 0x02 (TransferType=Bulk)
wMaxPacketSize           : 0x0040 (64 bytes)
bInterval                : 0x00 (ignored)
Data (HexDump)           : 07 05 85 02 40 00 00                              ....@..

      -------------------- String Descriptors -------------------
             ------ String Descriptor 0 ------
bLength                  : 0x04 (4 bytes)
bDescriptorType          : 0x03 (String Descriptor)
Language ID[0]           : 0x0409 (English - United States)
Data (HexDump)           : 04 03 09 04                                       ....
             ------ String Descriptor 1 ------
bLength                  : 0x10 (16 bytes)
bDescriptorType          : 0x03 (String Descriptor)
Language 0x0409          : "SAMSUNG"
Data (HexDump)           : 10 03 53 00 41 00 4D 00 53 00 55 00 4E 00 47 00   ..S.A.M.S.U.N.G.
             ------ String Descriptor 2 ------
bLength                  : 0x20 (32 bytes)
bDescriptorType          : 0x03 (String Descriptor)
Language 0x0409          : "SAMSUNG_Android"
Data (HexDump)           : 20 03 53 00 41 00 4D 00 53 00 55 00 4E 00 47 00    .S.A.M.S.U.N.G.
                           5F 00 41 00 6E 00 64 00 72 00 6F 00 69 00 64 00   _.A.n.d.r.o.i.d.
             ------ String Descriptor 3 ------
bLength                  : 0x18 (24 bytes)
bDescriptorType          : 0x03 (String Descriptor)
Language 0x0409          : "xxxxxxxxxxx"
Data (HexDump)           : xx xx xx xx xx xx xx xx xx xx xx xx xx xx xx xx   ..x.x.x.x.x.x.x.
                           xx xx xx xx xx xx xx xx                           x.x.x.x.
             ------ String Descriptor 4 ------
bLength                  : 0x0E (14 bytes)
bDescriptorType          : 0x03 (String Descriptor)
Language 0x0409          : "Conf 1"
Data (HexDump)           : 0E 03 43 00 6F 00 6E 00 66 00 20 00 31 00         ..C.o.n.f. .1.
             ------ String Descriptor 5 ------
bLength                  : 0x08 (8 bytes)
bDescriptorType          : 0x03 (String Descriptor)
Language 0x0409          : "MTP"
Data (HexDump)           : 08 03 4D 00 54 00 50 00                           ..M.T.P.
             ------ String Descriptor 6 ------
bLength                  : 0x42 (66 bytes)
bDescriptorType          : 0x03 (String Descriptor)
Language 0x0409          : "CDC Abstract Control Model (ACM)"
Data (HexDump)           : 42 03 43 00 44 00 43 00 20 00 41 00 62 00 73 00   B.C.D.C. .A.b.s.
                           74 00 72 00 61 00 63 00 74 00 20 00 43 00 6F 00   t.r.a.c.t. .C.o.
                           6E 00 74 00 72 00 6F 00 6C 00 20 00 4D 00 6F 00   n.t.r.o.l. .M.o.
                           64 00 65 00 6C 00 20 00 28 00 41 00 43 00 4D 00   d.e.l. .(.A.C.M.
                           29 00                                             ).
             ------ String Descriptor 7 ------
bLength                  : 0x1A (26 bytes)
bDescriptorType          : 0x03 (String Descriptor)
Language 0x0409          : "CDC ACM Data"
Data (HexDump)           : 1A 03 43 00 44 00 43 00 20 00 41 00 43 00 4D 00   ..C.D.C. .A.C.M.
                           20 00 44 00 61 00 74 00 61 00                      .D.a.t.a.
             ------ String Descriptor 8 ------
bLength                  : 0x16 (22 bytes)
bDescriptorType          : 0x03 (String Descriptor)
Language 0x0409          : "CDC Serial"
Data (HexDump)           : 16 03 43 00 44 00 43 00 20 00 53 00 65 00 72 00   ..C.D.C. .S.e.r.
                           69 00 61 00 6C 00                                 i.a.l.
             ------ String Descriptor 10 ------
bLength                  : 0x1C (28 bytes)
bDescriptorType          : 0x03 (String Descriptor)
Language 0x0409          : "ADB Interface"
Data (HexDump)           : 1C 03 41 00 44 00 42 00 20 00 49 00 6E 00 74 00   ..A.D.B. .I.n.t.
                           65 00 72 00 66 00 61 00 63 00 65 00               e.r.f.a.c.e.

I'm working through the USB CDC specs but information is spread across multiple locations so it's taking a while. Although there are multiple CDC endpoints, I'd expect at least one to trigger tuh_cdc_mount_cb() and change my blinken light?

Debug probe should arrive soon for some more meaningful messages.

Thanks again!

[IngHK]

I don't see any obvious reasons why it shouldn't work. ACM (Abstract Control Model) is supported by TinyUSB and the associated interface descriptors initially look plausible.
Can you post the debug logs with #define CFG_TUSB_DEBUG 2?

[IngHK]

I just tested my Samsung Tablet and here it works (tuh_cdc_mount_cb() is called)

[benjamindonnachie]

Interesting. Thanks IngHK. As soon as the debug probe gets here, I'll grab some logs for you.

[benjamindonnachie]

Needs more investigation when I have time. #define CFG_TUSB_DEBUG 2 set but no output from TinyUSB. Redefined SERIAL_TUSB_DEBUG Serial1 to be sure, still nothing except for serial output statements I added in the main loop.

[benjamindonnachie]

I seem to be making progress with the Arduino host_device_info example. Will report back later. Thanks.

[benjamindonnachie]

Worked once after a lot of messing around with cables:

TinyUSB Host: Device Info Example
SerialHost is connected to a new CDC device
Device attached, address = 1
Device 1: ID 04e8:6860
Device Descriptor:
bLength 18
bDescriptorType 1
bcdUSB 0200
bDeviceClass 0
bDeviceSubClass 0
bDeviceProtocol 0
bMaxPacketSize0 64
idVendor 0x04e8
idProduct 0x6860
bcdDevice 0400
iManufacturer 1 SAMSUNG
iProduct 2 SAMSUNG_Android
iSerialNumber 3 xxxxx
bNumConfigurations 1
Device 1: ID 04e8:6860 SAMSUNG SAMSUNG_Android
Device removed, address = 1
No device connected (except hub)
SerialHost is disconnected

Starting to look promising and perhaps a hardware issue rather than TinyUSB. According to Waveshare just a c-to-c cable should be needed for host but I'm having most success with type C to type A and back with type A to type C.... !

[IngHK]

the phone may starts to charge and the 5v breaks down...

[benjamindonnachie]

Thanks; it’s a good theory. The Zero is powered from a USB battery bank and doesn’t get beyond 0.06A but I haven’t checked what it can deliver. Tried with USB power isolated but results suggest phone needs power presented. I’ll try connecting the battery pack direct over the weekend. Extremely promising for TinyUSB and the Arduino port though!

[benjamindonnachie]

Powering phone direct from battery bank did the trick - thank you very much for you help! :)