Search found 3 matches

by grugrugru
24 Nov 2020, 20:45
Forum: Everything Coding
Topic: Huawei E3531 dongle and usb otg host
Replies: 3
Views: 2451

Re: Huawei E3531 dongle and usb otg host

Turns out I didn't convert the raw message into bytestring. Thanks for the support.
by grugrugru
24 Nov 2020, 18:12
Forum: Everything Coding
Topic: Huawei E3531 dongle and usb otg host
Replies: 3
Views: 2451

Re: Huawei E3531 dongle and usb otg host

Enumeration is usually done by the kernel (udev or hotplug) not by the user, are you sure you need to do that by yourself? The ST USB HOST library has its own enumeration process implementation. I only need to reset the peripheral to get the re-enumeration process started. Be aware that some USB ho...
by grugrugru
23 Nov 2020, 12:56
Forum: Everything Coding
Topic: Huawei E3531 dongle and usb otg host
Replies: 3
Views: 2451

Huawei E3531 dongle and usb otg host

Hi, I am trying to use the huawei e3531 dongle with the STM32 microprocessor via usb otg. This means that I have to perform mode switching to switch to modem mode. I read the source code but still didn't know quite sure the steps needed to perform the mode switching operation. In my understanding, I...