Dallas IBUTTON and UART

[SGian.1]

Hi there!

i start to work with Dallas Ibutton and for my project i use STM32G031K8 nucleo. Because i need to read only one ibutton i use the UART peripheral and no ic dedicate for 1Wire. My problem is when i try to  use the rx callback function for know when i receive all data (and i start wit  receive one bit at the time) never shoot, If i put a simple delay of 1ms everythingh wor very well i can see all my data on my logic analyzer .Question because the nucleo use the second uart2 for debug is possible that give me the problem ? and if yes how can i resolve ?

Thank you soo much 

Sergio

[TDK]

> Question because the nucleo use the second uart2 for debug is possible that give me the problem ?

No, if you're not using USART2 in your code, it won't affect your program. Doesn't matter that it's hooked up to the ST-Link chip.

[SofLit]

Hello,

Not everyone here knows what is "Dallas Ibutton". So, when you formulate a request please think about others that need the have a clear a picture of your issue/request.

https://community.st.com/t5/community-guidelines/how-to-write-your-question-to-maximize-your-chances-to-find-a/ta-p/575228

[SGian.1]

Yep you have a reason 

https://www.analog.com/media/en/technical-documentation/data-sheets/DS1992-DS1993.pdf