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Tyassin
Tyassin
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Your NRST (pin 7) is either connected to GND or a capacitor. That is not correct. Use a pull-upcould have an external resistor and then you can add a capacitor to GNDhave a more defined RC time constant.

Another thing which is unclear now, is that usually the STLink don’t supply power to the MCU. There can be a 3.3V connection but that is usually a sense pin to let the programmer set the correct voltages.

Your NRST (pin 7) is either connected to GND or a capacitor. That is not correct. Use a pull-up resistor and then you can add a capacitor to GND.

Another thing which is unclear now, is that usually the STLink don’t supply power to the MCU. There can be a 3.3V connection but that is usually a sense pin to let the programmer set the correct voltages.

Your NRST (pin 7) could have an external resistor to have a more defined RC time constant.

Another thing which is unclear now, is that usually the STLink don’t supply power to the MCU. There can be a 3.3V connection but that is usually a sense pin to let the programmer set the correct voltages.

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Tyassin
Tyassin
  • 3.7k
  • 1
  • 3
  • 20

Your NRST (pin 7) is either connected to GND or a capacitor. That is not correct. Use a pull-up resistor and then you can add a capacitor to GND.

Another thing which is unclear now, is that usually the STLink don’t supply power to the MCU. There can be a 3.3V connection but that is usually a sense pin to let the programmer set the correct voltages.