I have a B-L462E-CELL1 board, wich has a oled display. I want to turn it on, but i dont know the vdd pin. The datasheet is very brief.

[CYANG.1]

If the board is a new board, the OLED should display by default. The OLED was operated by SPI3 of STM32L462, and the display reset is controlled by PH1 of STM32L462.

[jiangfan]

it is better to start or recover to default configuration.

user may get some binary or source files from x-cube-cellular website https://www.st.com/en/embedded-software/x-cube-cellular.html, then you can find the binary at (or similar location) STM32CubeExpansion_CELLULAR_V5.2.0\Projects\B_L462E\Demonstrations\Cellular\Binaries\l462_t1se_socket_v520.bin