Hi there, i'm working on the STM32MP157-dk1 development board. I want to communicate with a fingerprint sensor using uart protocol, i found in the web that i have to open a file, i want to know, which file i have to open in the dev folder.

[KDari]

STM32MP157-dk1, UART, file to open, fingerprint sensor

[Yli.8]

• I think you should change the serial port state that will correspond in the device tree

[KDari]

thank you very much, we used pinctrl, and rebuilded the kernel STM1 that was dissabled now appeared thank you.