There is no virtual serial port when the STM32F0discovery development board is plugged into the computer?

littleshrimp

There is no virtual serial port when the STM32F0discovery development board is plugged into the computer? [Copy link]

 

I haven't used this board for several years. When I used it recently, I plugged it into the computer and downloaded the program on ST-LINK. I could see no virtual serial port device in the device manager. I forgot whether it existed before. The schematic diagram shows that there is a UART connected to ST-LINK. Has anyone encountered this problem?

qwerghf

It didn't exist before.

RCSN

My stm32f4 discovery also has no cdc. The stlink version is too low

cruelfox

Not sure, if the ST-Link part above is STM32F103C8T6, then it doesn't have it, it's ST-Link-v2. My STM32F4Discovery is the same. The one with VCP is ST-Link-v2-1, the MCU is STM32F103CBT6, such as the one on the Nucleo board.

RCSN

My stm32f4 discovery also has no cdc. stlink version is low

littleshrimp

qwerghf posted on 2018-11-24 09:14 It didn't exist before

If it doesn't exist, how can I debug this serial port? It's already connected to the ST-LINK

littleshrimp

cruelfox posted on 2018-11-24 09:16 Not sure, if the ST-Link part above is STM32F103C8T6, then there is no, that is ST-Link-v2. My STM32F4Discovery is the same...

It is STM32F103C8T6, the UART has been connected, but it can't be used?

ddllxxrr

The virtual serial port is simulated by STLINK, which means you need to add a driver. If you can't add it, then there is no

qwerghf

littleshrimp posted on 2018-11-24 09:29 It is STM32F103C8T6. UART has been connected. Why can't it be used?

It can't be used in the first place. Early stlink did not support cdc. It was added later. However, you can burn daplink firmware to support cdc

littleshrimp

RCSN posted on 2018-11-24 09:17 My stm32f4 discovery also has no cdc. The stlink version is low

The pcb has been designed, it will not support

littleshrimp

ddllxxrr posted on 2018-11-24 09:49 The virtual serial port is simulated by STLINK, which means you need to add a driver. If the OP can't add it, then there is no

The ST-LINK driver has been installed

littleshrimp

qwerghf posted on 2018-11-24 09:52 It can't be used in the first place. The early stlink did not support cdc. It was added later. But you can burn daplink firmware to support cdc

Google didn't find a solution either. I won't bother with it anymore. I'll add another NUCLEO board to do USB->UART. It's just a bit troublesome