hi guys,
I have a problem! I am tryin' to program a STM32F407VGT microcontroller, but when I connect the programmer the st-link debugger keeps sayin' "no st-link detected" . I have installed the st-link usb driver over and over but didn't help. usin' the utility doesn't change anything as well. please help... (I'm using keil u vision 5 by the way)
Ok, so perhaps you haven't built this one properly?
Check for obvious electrical issues like shorts, opens, lack of power, etc. that might interfere with connectivity, or cause the ST-LINK to malfunction.
Do you have other interfaces you could try? Say USART or USB in boot mode?
Good point!
So, another thing to check: Is the STLink detected OK when it's not connected to your board?
I think it would have to be quite a gross error to actually stop the STLink working!
Note that the error "STLink not detected" is distinct from "Cannot connect to target" errors (in the ST Utility, at least):
* "STLink not detected" means that the PC cannot see the STLink at all - check in Device Manager;
* "Cannot connect to target" errors mean that the STLink can be seen, but then there's a problem connecting to the target.
Is it a genuine, standalone STLink - from ST?
Is it a genuine, embedded STLink - on a Discovery or Nucleo board?
Or is it a cheap knock-off from ebay, etc?
If it's a cheap ebay knock-off, check the target connector pinout carefully - there are some identical-looking units which have different pinouts!!