SWD connection on SKR3 EZ board

[dresco]

Hi,

I see from the schematic that the SWCLK and SWDIO connections on the SWD header are shared with SCL and SDA on the AT24C32 EEPROM. The SDA pin on the EEPROM is open drain, and I think SWDIO is usually push pull?

Any recommendations for safely using SWD with this device? My concern is that the EEPROM may attempt to pull SDA low while it's being driven high by an attached ST-Link..

[kisslorand]

I used STLink on my SKR3 and it works just fine.

[dresco]

I used STLink on my SKR3 and it works just fine.

Thanks @kisslorand, debug as well as programming? I was concerned that the AT24C32 may try to drive the data line low while SWD is driving it high, but am probably worrying unnecessarily. I suppose it won't do anything with the data line without receiving a valid address first anyway...

[kisslorand]

I did just programming but debug must work as well.