STM32L496G-Discovery Unknown Device

[Adams.Peter]

Posted on September 26, 2017 at 22:21

My STM32L496G-Discovery shows up as an 'Unknown Device' in the Windows 7 Device manager.

I tried connecting to it with the ST-LINK Utility, it gives a 'No ST_LINK detected' error message.

Is there a way to directly connect to U6 (the 32F103 running ST-LINK firmware) over USB to do DFU?

#st-link #st-link-error

[Tesla DeLorean]

Posted on September 27, 2017 at 01:35

Having broken firmware in the ST-LINK, as delivered, isn't something we see much of, more likely something specific to the system.

daemon tools?

[Adams.Peter]

Posted on September 27, 2017 at 16:16

Vangelis,

Thank you, this was the knock on the head I needed.

Connected another ST dev board, and it also shows as an 'unknown device'.

So, It looks like a problem with the driver.

[AMera]

same problem

on a Gentoo Linux machine

Yesterday the atollicTrueStudio told me that the STLink firmeware on my STM32F411 Nucleo is old and there is an update available

-> OK

then i debugged a part of software ...all works for about 2houres

OK then i disconnected the board,

powered off my PC and today it doesn't work any more

the Program on the Target is still running like charm

BUT

there is no more connection

dmesg
 
 
[551559.359615] usb 11-4: USB disconnect, device number 6
 
[551563.688058] usb 11-4: new full-speed USB device number 7 using ohci-pci
 
[551563.967202] usb 11-4: New USB device found, idVendor=0483, idProduct=374b
 
[551563.967210] usb 11-4: New USB device strings: Mfr=1, Product=2, SerialNumber=3
 
[551563.967214] usb 11-4: Product: STM32 STLink
 
[551563.967217] usb 11-4: Manufacturer: STMicroelectronics
 
[551563.967220] usb 11-4: SerialNumber: 066AFF494851877267065831
 
[551563.969199] usb 11-4: can't set config #1, error -62
 
 
 

dmesg

[551559.359615] usb 11-4: USB disconnect, device number 6

[551563.688058] usb 11-4: new full-speed USB device number 7 using ohci-pci

[551563.967202] usb 11-4: New USB device found, idVendor=0483, idProduct=374b

[551563.967210] usb 11-4: New USB device strings: Mfr=1, Product=2, SerialNumber=3

[551563.967214] usb 11-4: Product: STM32 STLink

[551563.967217] usb 11-4: Manufacturer: STMicroelectronics

[551563.967220] usb 11-4: SerialNumber: 066AFF494851877267065831

[551563.969199] usb 11-4: can't set config #1, error -62

st-info --probe

setting new configuration (0 -> 1)

Found 1 stlink programmers

serial:

openocd: ""

flash: 0 (pagesize: 0)

sram: 0

chipid: 0x0000

descr: unknown device

so it looks like Atollic has, with this update, killed the STLink on my nucleo device :oops: :evil:

perhaps somebody knows how to fix this problem

[AMera]

NO DRIVER PROBLEM

another STM32F411 nucleo from the same batch

i bought 4 of this at the same time 3 working like charm

[583125.632133] usb 11-4: new full-speed USB device number 13 using ohci-pci

[583125.931172] usb 11-4: New USB device found, idVendor=0483, idProduct=374b

[583125.931175] usb 11-4: New USB device strings: Mfr=1, Product=2, SerialNumber=3

[583125.931176] usb 11-4: Product: STM32 STLink

[583125.931177] usb 11-4: Manufacturer: STMicroelectronics

[583125.931178] usb 11-4: SerialNumber: 066EFF494851877267013639

[583125.941190] usb-storage 11-4:1.1: USB Mass Storage device detected

[583125.941383] scsi host8: usb-storage 11-4:1.1

[583125.943287] cdc_acm 11-4:1.2: ttyACM0: USB ACM device

[583127.019180] scsi 8:0:0:0: Direct-Access    MBED    microcontroller 1.0 PQ: 0 ANSI: 2

[583127.019398] sd 8:0:0:0: Attached scsi generic sg5 type 0

[583127.029117] sd 8:0:0:0: [sde] 1056 512-byte logical blocks: (541 kB/528 KiB)

[583127.035123] sd 8:0:0:0: [sde] Write Protect is off

[583127.035126] sd 8:0:0:0: [sde] Mode Sense: 03 00 00 00

[583127.041129] sd 8:0:0:0: [sde] No Caching mode page found

[583127.041132] sd 8:0:0:0: [sde] Assuming drive cache: write through

[583127.121279] sd 8:0:0:0: [sde] Attached SCSI removable disk

[JMora.7]

Hi, I’m in the same situation here, brand new Nucleo board, and I get the following with

st-info — probe 
setting new configuration (0 -> 1)
Found 1 st-link programmers 
seria: XXXXXXXXXXXXXXXXXX < Edit 
flash: 0 (pagesize: 0)
sram: 0
chipid: 0x0000
descr: unknown device

It will not connect to the board.

Any procedure to resolve this?

Thanks,