About APast.1

APast.1 · 2021-03-28

APast.1 · 2021-03-28

Thanks for your help, the only solution was to try and try to change the position of the connections until the error disappeared

APast.1 · 2021-03-28

Could you please explain to me what these changes are?unfortunately if I directly connect stlink to the MC it works but as soon as I connect the other pins to the breadboard it stops working

APast.1 · 2021-03-28

truein reality if I keep the same length as in the second case but I change the final position in some cases it works. This drives me crazy :)i tried up to 15 khz, nothing to do

APast.1 · 2021-03-28

... Ensure you StLink works on some other device.I tried another StLink, same behavior.... Connect the uC via USART in boot mode.I will try

APast.1 · 2021-03-28

... Check the continuityIt's ok.... Check signal with scopeIt seems that the MC is not responding in the second position of the breadboard.first:second:

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I'm going crazy, look at the photos: if I move the SWD CLK connection in one point of the breadboard the connection works, in another it doesn't! The chip is a STM32L412KB, I tried to replace it but nothing! I also replaced the ST-LINK but nothing yet.

Re: I'm going crazy, look at the photos: if I move the SWD CLK connection in one point of the breadboard the connection works, in another it doesn't! The chip is a STM32L412KB, I tried to replace it but nothing! I also replaced the ST-LINK but nothing yet.

Re: I'm going crazy, look at the photos: if I move the SWD CLK connection in one point of the breadboard the connection works, in another it doesn't! The chip is a STM32L412KB, I tried to replace it but nothing! I also replaced the ST-LINK but nothing yet.

Re: I'm going crazy, look at the photos: if I move the SWD CLK connection in one point of the breadboard the connection works, in another it doesn't! The chip is a STM32L412KB, I tried to replace it but nothing! I also replaced the ST-LINK but nothing yet.

Re: I'm going crazy, look at the photos: if I move the SWD CLK connection in one point of the breadboard the connection works, in another it doesn't! The chip is a STM32L412KB, I tried to replace it but nothing! I also replaced the ST-LINK but nothing yet.

Re: I'm going crazy, look at the photos: if I move the SWD CLK connection in one point of the breadboard the connection works, in another it doesn't! The chip is a STM32L412KB, I tried to replace it but nothing! I also replaced the ST-LINK but nothing yet.