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STM32F407VG doesn't work over SWD, but over JTAG it works

Question asked by brandl.mathias on Oct 24, 2014
Latest reply on Oct 30, 2014 by nouha
Hello everybody,
my company has a project with the STM32F407VG. Since yesterday, we have a problem with flashing the controller. For flashing we use the ST-Link V2. When the ST-Link is in Port SWD, we couldn't flash the Controller, but in Port JTAG it works. We use also Matlab and in this Program we can only flash in SWD. What is wrong??

With kind regards Mathias