STLINK cannot recognize the chip

chenbingjy

STLINK cannot recognize the chip [Copy link]

 

There are two STLINKs, one is good and can recognize the chip, the other one can't.

This is the emulator.

It is said that this kind of emulator is not easy to break. Can an expert fix it? For example, re-flash the firmware or something. I don't know how to do it. Please give me some advice, thank you!

huo_hu

Flashing the firmware is troublesome. Besides, I'm not sure if your hardware is good. Just buy a new one.

chenbingjy

huo_hu posted on 2020-6-27 17:20 Flashing the firmware is very troublesome. Besides, I am not sure if your hardware is good. Just buy a new one

The drive can be identified.

I never give up.

huo_hu

chenbingjy posted on 2020-6-27 17:36 The driver can be recognized. I never give up.

From the screenshot above, the serial number has been identified, so stlink should be fine.

chenbingjy

huo_hu posted on 2020-6-27 19:25 From the screenshot above, the serial number has been identified, so stlink should be fine

Thank you! That's strange. Why can't STLINK detect the chip when there is no problem?

If the other STLINK can detect it, it means there is no problem with the board.

曹伟1993

The ST-Link serial number has been identified, which means your downloader is fine. Please check the problem of your board. In most cases, it is your board's problem. Also, some ST-Links have 3.3V power supply, while others do not. This needs attention.

chenbingjy

Cao Wei 1993 posted on 2020-6-28 14:51 The ST-Link serial number has been identified, which means there is no problem with your downloader. Please check the problem of your board. In most cases, you...

Thanks! The board should be fine, another STLINK can recognize it, the same STLINK.

I remember there was a broken one before, and that colleague reflashed the firmware and it fixed it. But that colleague left the company.

damiaa

I guess the firmware is not broken. The computer can recognize it. It should be a hardware problem, maybe the connection or power supply.

damiaa

If it doesn't work, forget it. ST has STLINK on every board. Why bother with it?

chenbingjy

damiaa posted on 2020-7-2 15:40 If it doesn't work, forget it. ST has STLINK on every board. Why bother with all that?

Self-made board, without STLINK

chenbingjy

I reflashed the firmware and it said The content of the ST-LINK is corrupt.

How can I do this? Thank you

chenbingjy

It can be upgraded using the STM32 ST-LINK Utility.

But it just can't connect to the device.

I posted two pictures of the simulator.

This is bad.

This is good.

This one is broken. I checked it and found that there is an R1 on the left side of the 20-pin jack that is not soldered. I don't know if it has any effect.

These two emulators are different, one is produced in May and the other in July. The one produced in July 2019 is the bad one.