Comments (5)
larsgk
commented on July 19, 2024
Quoting from mbed.org for the lazy ;) ->
"I have been using USBSerial for 1/2 year now on FRDM-KL25Z with no problems at all. All of a sudden (when testing on a new MacBook Air 2013) - I see that when connected to either USB port, the device no longer pops up in the /dev/tty.xxx list.
The error that dmesg displays is:
1
2
USBF: 110.115 The IOUSBFamily gave up enumerating a USB device after 10 retries. (Port 1 of Hub at 0x14000000)
USBF: 110.115 The IOUSBFamily was not able to enumerate the device (Port 1 of Hub at 0x14000000).
I seem to have narrowed it down to be a problem on the new Haswell Mac laptops (tried it on a new Pro 2013 and Air 2013 that shows the problem - and an old Pro and Air (pre-2013) that works just fine.
At the moment, I am trying to modify the kext "driver" files in /System/Library/Extensions to grab my particular VID/PID and force some USB serial driver/module.
My guess:
- the new macs use a new USB3 chip that - for some reason - is not compatible with the serial devices I have tried (google gives many examples of the same problem with e.g. Macbook Air 2013 and other devices)
- the new macs are just more strict in the software so one needs to be 100% compliant with the USB CDC profile (somehow)
I have also tried to build with the latest mbed code from github (same result).
.. these are just guesses... digging further.
UPDATE:
I tried to make the VID/PID the same as for the main flashing port that seems to mount fine as a USB serial device on the mac... the problem then might be in the details of the CDC setup. I am attaching the two printouts of lsusb from linux with the details."
from mbed-os.
larsgk
commented on July 19, 2024
I can't include the txt printouts as attachments - so pasting in here:
KL25Z normal flashing port (CDC profile works on the new mac):
Bus 002 Device 012: ID 1357:0707 P&E Microcomputer Systems
Device Descriptor:
bLength 18
bDescriptorType 1
bcdUSB 2.00
bDeviceClass 239 Miscellaneous Device
bDeviceSubClass 2 ?
bDeviceProtocol 1 Interface Association
bMaxPacketSize0 16
idVendor 0x1357 P&E Microcomputer Systems
idProduct 0x0707
bcdDevice 8.00
iManufacturer 1
iProduct 2
iSerial 0
bNumConfigurations 1
Configuration Descriptor:
bLength 9
bDescriptorType 2
wTotalLength 98
bNumInterfaces 3
bConfigurationValue 1
iConfiguration 0
bmAttributes 0xc0
Self Powered
MaxPower 464mA
Interface Association:
bLength 8
bDescriptorType 11
bFirstInterface 0
bInterfaceCount 2
bFunctionClass 2 Communications
bFunctionSubClass 3 Telephone
bFunctionProtocol 0
iFunction 2
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 0
bAlternateSetting 0
bNumEndpoints 1
bInterfaceClass 2 Communications
bInterfaceSubClass 2 Abstract (modem)
bInterfaceProtocol 0 None
iInterface 0
CDC Header:
bcdCDC 1.10
CDC Call Management:
bmCapabilities 0x01
call management
bDataInterface 1
CDC ACM:
bmCapabilities 0x06
sends break
line coding and serial state
CDC Union:
bMasterInterface 0
bSlaveInterface 1
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x85 EP 5 IN
bmAttributes 3
Transfer Type Interrupt
Synch Type None
Usage Type Data
wMaxPacketSize 0x0010 1x 16 bytes
bInterval 10
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 1
bAlternateSetting 0
bNumEndpoints 2
bInterfaceClass 10 CDC Data
bInterfaceSubClass 0 Unused
bInterfaceProtocol 0
iInterface 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x83 EP 3 IN
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize 0x0010 1x 16 bytes
bInterval 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x04 EP 4 OUT
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize 0x0010 1x 16 bytes
bInterval 0
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 2
bAlternateSetting 0
bNumEndpoints 2
bInterfaceClass 8 Mass Storage
bInterfaceSubClass 6 SCSI
bInterfaceProtocol 80 Bulk-Only
iInterface 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x81 EP 1 IN
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize 0x0040 1x 64 bytes
bInterval 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x02 EP 2 OUT
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize 0x0040 1x 64 bytes
bInterval 0
Same output - but from the USB Serial (=> USB CDC) generated profile from the "user port" of the KL25Z board:
Bus 002 Device 011: ID 1357:0707 P&E Microcomputer Systems
Device Descriptor:
bLength 18
bDescriptorType 1
bcdUSB 1.10
bDeviceClass 2 Communications
bDeviceSubClass 0
bDeviceProtocol 0
bMaxPacketSize0 64
idVendor 0x1357 P&E Microcomputer Systems
idProduct 0x0707
bcdDevice 1.00
iManufacturer 1
iProduct 2
iSerial 3
bNumConfigurations 1
Configuration Descriptor:
bLength 9
bDescriptorType 2
wTotalLength 75
bNumInterfaces 2
bConfigurationValue 1
iConfiguration 0
bmAttributes 0x80
(Bus Powered)
MaxPower 100mA
Interface Association:
bLength 8
bDescriptorType 11
bFirstInterface 0
bInterfaceCount 2
bFunctionClass 2 Communications
bFunctionSubClass 2 Abstract (modem)
bFunctionProtocol 0 None
iFunction 0
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 0
bAlternateSetting 0
bNumEndpoints 1
bInterfaceClass 2 Communications
bInterfaceSubClass 2 Abstract (modem)
bInterfaceProtocol 1 AT-commands (v.25ter)
iInterface 0
CDC Header:
bcdCDC 1.10
CDC Call Management:
bmCapabilities 0x03
call management
use DataInterface
bDataInterface 1
CDC ACM:
bmCapabilities 0x06
sends break
line coding and serial state
CDC Union:
bMasterInterface 0
bSlaveInterface 1
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x81 EP 1 IN
bmAttributes 3
Transfer Type Interrupt
Synch Type None
Usage Type Data
wMaxPacketSize 0x0040 1x 64 bytes
bInterval 16
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 1
bAlternateSetting 0
bNumEndpoints 2
bInterfaceClass 10 CDC Data
bInterfaceSubClass 0 Unused
bInterfaceProtocol 0
iInterface 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x82 EP 2 IN
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize 0x0040 1x 64 bytes
bInterval 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x02 EP 2 OUT
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize 0x0040 1x 64 bytes
bInterval 0
from mbed-os.
larsgk
commented on July 19, 2024
OK - I have investigated this a bit further:
The FRDM-KL25Z fresh from factory has firmware on it from Freescale that WORKS ON THE NEW MACS while the mbed USB CDC/Serial doesn't.
I have tried to hack the CDC USB descriptors in USBCDC.cpp to match as good as possible but it seems to be some handshake after the initial init that goes wrong. I see a difference in endpoint values in the descriptor but have no idea where to change in the underlying USB code - please help me out there ;)
I am including a dump of the working Freescale (factory) firmware descriptor (when attached to the user USB port -> new haswell macbook air):
Bus 001 Device 008: ID 15a2:a50f Freescale Semiconductor, Inc.
Device Descriptor:
bLength 18
bDescriptorType 1
bcdUSB 1.10
bDeviceClass 2 Communications
bDeviceSubClass 0
bDeviceProtocol 0
bMaxPacketSize0 32
idVendor 0x15a2 Freescale Semiconductor, Inc.
idProduct 0xa50f
bcdDevice 0.00
iManufacturer 1
iProduct 2
iSerial 3
bNumConfigurations 1
Configuration Descriptor:
bLength 9
bDescriptorType 2
wTotalLength 67
bNumInterfaces 2
bConfigurationValue 1
iConfiguration 0
bmAttributes 0xc0
Self Powered
MaxPower 100mA
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 0
bAlternateSetting 0
bNumEndpoints 1
bInterfaceClass 2 Communications
bInterfaceSubClass 2 Abstract (modem)
bInterfaceProtocol 1 AT-commands (v.25ter)
iInterface 1
CDC Header:
bcdCDC 1.10
CDC Call Management:
bmCapabilities 0x00
bDataInterface 1
CDC ACM:
bmCapabilities 0x00
CDC Union:
bMasterInterface 0
bSlaveInterface 1
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x81 EP 1 IN
bmAttributes 3
Transfer Type Interrupt
Synch Type None
Usage Type Data
wMaxPacketSize 0x0020 1x 32 bytes
bInterval 2
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 1
bAlternateSetting 0
bNumEndpoints 2
bInterfaceClass 10 CDC Data
bInterfaceSubClass 0 Unused
bInterfaceProtocol 0
iInterface 1
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x82 EP 2 IN
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize 0x0020 1x 32 bytes
bInterval 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x03 EP 3 OUT
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize 0x0020 1x 32 bytes
bInterval 0
from mbed-os.
larsgk
commented on July 19, 2024
There is an update from Apple who were so kind to take a look at the issue (bought a board, installed the firmware and did tests..) - they found the following:
"This is not an OS X problem. It is a low level problem with the board when communicating with a USB 3.0 controller. The device is not responding to a SET_ADDRESS command. In other cases, it does not respond to the GET_DESCRIPTOR(CONFIGURATION). It has nothing to do with the descriptors programmed."
I am not a USB low level expert - so I hope that there are someone here who can help me out with what this means.
br
Lars
from mbed-os.
larsgk
commented on July 19, 2024
Seems to have been fixed with 43113cf
great work (and I hope it is stable 👍 )
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