Cannot connect to STM32VL under Linux

[cedricboudinet]

Hello

I am trying to connect to a STM32VL discovery board (STM32F100RBT6B) under Debian 9 32bits.
Unfortunately, st-info seems to be unable to detect the board:

$ st-info --probe
Found 0 stlink programmers

But the board is connected:
$ lsusb
Bus 002 Device 004: ID 0483:3744 STMicroelectronics STLINK Pseudo disk

I checked st-info with a STM32F407 discovery board (STLINK/V2) and it works.

Does it mean that stlink for STLINK/V1 is not working under Linux or am I doing something wrong?

Regards
Cedric

[xor-gate]

I think the stlink v1 programmers are claimed by the kernel and for normal users it is with the default permissions possible to detach the kernel driver for the emulated disk drive and send raw programming commands. Not much people use the stlinkv1 but this is what I found: https://github.com/texane/stlink/blob/ba898b1c9c75800b566e8b1983ff7643e104a994/src/sg.c#L62-L74

[cedricboudinet]

/etc/modprobe.d/stlink_v1.conf has been automatically installed and seems to be taken into account.
When I plug the card, dmesg gives:
[ 5290.649419] usb 2-1.2: USB disconnect, device number 5
[ 5293.944538] usb 2-1.2: new full-speed USB device number 6 using ehci-pci
[ 5294.061008] usb 2-1.2: New USB device found, idVendor=0483, idProduct=3744
[ 5294.061021] usb 2-1.2: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[ 5294.061027] usb 2-1.2: Product: STM32 STLink
[ 5294.061033] usb 2-1.2: Manufacturer: STMicroelectronics
[ 5294.061038] usb 2-1.2: SerialNumber: Pÿn�PgRUG�\xffffffc2\xffffff87
[ 5294.061774] usb-storage 2-1.2:1.0: USB Mass Storage device detected
[ 5294.061958] usb-storage 2-1.2:1.0: device ignored

I think that the last line means that the device is not mounted as a mass storage.

I just tried something else: I connected the board and launched st-util: it manages to connect.
It seems the issue is only with st-info.

[cedricboudinet]

STLINK/V1 is ignored in stlink_probe_usb_devs (https://github.com/texane/stlink/blob/b69c1d51b03a4345c4d478ac1d8c2088002cd36a/src/usb.c#L976 and https://github.com/texane/stlink/blob/b69c1d51b03a4345c4d478ac1d8c2088002cd36a/src/usb.c#L1000).
I changed the test to make it took into account but then the stlink_print_info output seems to be broken (e.g. for openocd and serial). Should the display be adapted to the stlink version ?