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Problem using STM32F769-Discovery with STM32CubeMX 4.27

MLau.9
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I've got a few problems when creating a simple project using STM32CubeMX :

1) using all the default setting by STM32CubeMX and clicked YES to "initialize all peripherals with their default MODE", the LED ports were default to input mode ! Weird ! If set them manually to output mode, the user labels were cleared !

2) after generating code, adding two lines for LED blink, compile and run, the board just didn't have any respond. If stopping the debugging, MDK showed an error "Could not stop Cortex-M device! Please check the JTAG cable."

I have tried the same process to two other models of Nucleo boards, no problem at all.

Does the current version of STM32CubeMX have any incompatible problem with STM32F769-Discovery ?

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