STLINK connection error problem

chenbingjy

STLINK connection error problem [Copy link]

 

The board was burned once, but it can't be burned again. The emulator serial number becomes 3030303030303.. What's going on? Thank you!

wsmysyn

When downloading, press and hold reset, then release it to see if you can download it.

chenbingjy

wsmysyn posted on 2018-11-4 17:08 Press and hold the reset button when downloading, then release it to see if you can download it

Thank you! There is no reset button on the board

wsmysyn

chenbingjy posted on 2018-11-4 17:15 Thank you! There is no reset button on the board

Is the reset method RC? Just use tweezers or wire to short-circuit C,,

chenbingjy

I soldered a button and when I clicked download I got this error.

chenbingjy

wsmysyn posted on 2018-11-4 17:25 Is the reset method RC? Just use tweezers or wire to short-circuit C,,

Thank you, okay

wsmysyn

chenbingjy posted on 2018-11-4 17:40 Thank you, ok

Oh, it is indeed a reset problem?

chenbingjy

wsmysyn posted on 2018-11-4 19:01 Oh, it is indeed a reset problem?

I don't understand, it was better for a while, now it's sometimes better and sometimes worse

wsmysyn

chenbingjy posted on 2018-11-5 08:42 I don't understand, it was good for a while, now it's sometimes good and sometimes bad

Well, if the IO of the download port is not doing anything else (remap), the problem of the downloader may be bigger. . After remap, it must be reset. I sometimes encountered problems with the downloader before, which is the simpler stlink on the Internet that uses f101 or f102. There are generally two solutions, one is to re-plug and re-plug, and the other is to adjust the SW rate to a lower level. I have tried to set it to 4M before, and the download will definitely fail. It works when it is changed to 1.8M. .

chenbingjy

wsmysyn posted on 2018-11-5 09:31 Well, if the IO of the download port is not doing anything else (remap), the problem with the downloader may be bigger. . If it is remapped, it must be reset...

Thank you! The downloader is fine, it works on the development board. There is a problem on the board I designed myself.

ddllxxrr

Reset on the board?

chenbingjy

ddllxxrr posted on 2018-11-5 10:24 Is it the reset on the board? ? ? ? ?

Yes