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How to connect STM32F4 Discovery Board to St-link?
First open the STM32 ST-LINK Utility. push and hold discover black button (nrst button), click target -> setting, select “connect under reset” option; at the same time click refresh and release discovery board black button,
Why does stm32-st link does not connect to target stack?
Pins PA13 and PA14 are not used for another purpose. The setting in ST-LINK like Core Reset or Software reset does not work. I only have a connection when I push down Reset switch and then try to connect only in ST-Link Utility. Where do I make mistake and what is “connect Under Reset”?
What to do if your stm32f0 disco cannot connect to target?
If the above steps do not help, start up the STM-32 Link Utility, perform a firmware update (in the ST-Link menu) Given your findings of hardware damage, at a certain point you should face the economic reality that this is a $10 board into which you have expended far more than that in effort.
How to connect to a controller in STM32?
Put the uc into bootloader using boot0 pin and then try to connect with debugger. Try setting the programmer options to “connect under reset”. Then press reset on the target controller, keep it pressed while klicking on connect in the programmertool, release reset on controller. Programmer should connect to the controller now.
How to get STM32 to detect St link?
You can also try to remove the SWD jumpers (connector CN2) on your board to detach the ST-Link from the built-in microcontroller part. Since the ST-Link part is independent it will still be detected by the STM32 ST-Link Utility (but you will have to put the jumpers back if you want to actually program your microcontroller). Just ran into this.
When to connect SWD to St-link V2?
If so, first download program to discovery; your code conflicts with swd pins. When you power your board, your source code changes the pa13 and pa14 pins roles. You must connect swd to your board immediately after reset (and do so after power) before loading your code to the CPU.
Why does St-link not connect to target stack?
Reason: No device found on the target. It happens all the time. When I use ST-LINK utility I have the same problem, but when I push down RESET switch on board I have a connection. Pins PA13 and PA14 are not used for another purpose.