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  • [ABANDONED] GigaDevice GD32F307VC Connect after reconfiguring Debug / SWD Pins to GPIOs in Firmware

    dwi - - J-Link/Flasher related

    Post

    Hi Alex, yes, reset pin is connected to the reset pin j-link compact (pin 15). Development on device has already been completed. Programming the MCU for the first time is also no problem, but in case re-programming is required (e.g. in production) this issue pops up. I know debug pins should be avoided to be used as GPIOs, nevertheless it was required since all pins have already been in use. As far as I know GD32F307VC should be able be safely reset by using the nRST pin? Thanks, Daniel

  • [ABANDONED] GigaDevice GD32F307VC Connect after reconfiguring Debug / SWD Pins to GPIOs in Firmware

    dwi - - J-Link/Flasher related

    Post

    Hi, setup: - PCBA incl. GigaGevice GD32F307VC - J-Link Compact: SWD Interface - Windows 10 - DLL Version: v7.80c When I reconfigure the SWD Pins to normal GPIOs in the firmware right after bootup I'm having the issue that I'm not able to connect to the controller through SWD interface anymore by using jlink.exe: 1. connect [ENTER] 2. GD32F307VC [ENTER] 3. S [ENTER] // using SWD Interface 4. [ENTER] // using default speed: 4000 kHz => Failed to power up DAP => CPU cannot be halted I've already tr…