usb f407

[David.Cheng]

i have a slave device(SIMcom LTE) which needs more than two interfaces USB serial and USB RMnet

i dont know whether f407 support it? meanwhile i want to do it on RTEMS

RM document:

Up to 8 host channels (pipes): each channel is dynamically reconfigurable to allocate

any type of USB transfer.

[Pavel A.]

Decode the interface descriptors using any decent USB analyzer and determine the number of required endpoints.

Composite devices are supported, so multiple interfaces are not a problem (though the "middlewares" provided by ST are of very little help)

-- pa

[David.Cheng]

simcom device in windows

This device is part of a composite device.

Connection Information

 Port: 1

 Speed: High Speed (USB 2.0)

 Device address: 6

 Open pipes: 17

 Connection status: Device connected

Device Descriptor

 USB version: 2.0

 Device class: 0x0 - (Defined at Interface level)

 Device subclass: 0x0 - Unknown

 Device protocol: 0x0 - Unknown

 Control pipe max size: 64 bytes

 Vendor ID: 0x1e0e (Qualcomm / Option)

 Product ID: 0x9001 (Unknown)

 Product version: 3.18

 Manufacturer: String descriptor 1 (unable to read)

 Product: String descriptor 2 (unable to read)

 Serial Number: String descriptor 3 (unable to read)

 Configurations: 1

doing it with stm32 is worthy?

[Pavel A.]

The host (aka OTG) controller of STM32 supports only 16 endpoints. But this device wants 17.

Need to check if some endponts are not actually used.

-- pa

[David.Cheng]

but i dont know how to do it