Conversation

Notices

1. Embed this notice
   emily, blinkenlight witch (emily@sparkly.uni.horse)'s status on Sunday, 19-Jan-2025 11:38:23 JST emily, blinkenlight witch

   in reply to

   did you know: stm32f103 lets you configure io pins as "i2c, but push-pull"

   this does not work and will produce extremely surprising oscilloscope output, but it lets you do it

   • Embed this notice
     emily, blinkenlight witch (emily@sparkly.uni.horse)'s status on Sunday, 19-Jan-2025 11:38:25 JST emily, blinkenlight witch

     anyway it has been 0 days since some weird I2C issue in one of my projects turned out to be "this line is always low because you forgot to put a pullup resistor on it you dummy"

     why isn't that just a thing I2C bus-driving devices have built in

     alcinnz repeated this.