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i need help with na stm32l031k6, I want to just start the processor and read it with an st-link v2, I have connected BOOT0 to GND(i haven’t added a 10k resistor, but that shouldn’t be the problem ), NRST with pull-up 1k to VDD, VDDA and VDD are connected together. From what I read online I can pass without the external crystal because there is an internal one. So when I connect the VDD to 3v3 on the st-link, the GND to the st-link GND, SWCLK to PA14, SWDIO to PA13 and the chip isn’t recognized. I have ruled out an faulty st link because it recognizes a blue pill f103 board.
Hi @lub0_o
you connect VDD to 3V3. do you have an other power source on VDD ? 3V3 on st-link cannot supply your board, it just read the voltage level.
have you connected NRST to the Reset pin on ST-link ? the st-link need to force reset the mcu to start the connection, to insure that SWD pins have the right configuration
dont worry i fixed it, the st-link does provide power though, i power it on that way and the nrst pin has an internal pullup so it really its never hung
Yeah
the problem was that i am a big dumb dumb and switched swdio and swclk
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