Master Clock Output (MCO)
Overview
This sample is a minimum application to demonstrate how to output one of the internal clocks for external use by the application.
Requirements
The SoC should support MCO functionality and use a pin that has the MCO alternate function. To support another board, add a dts overlay file in boards folder. Make sure that the output clock is enabled in dts overlay file.
Building and Running
# From the root of the zephyr repository
west build -b nucleo_u5a5zj_q samples/boards/st/mco
west flash
After flashing, the LSE clock will be output on the MCO pin enabled in Device Tree. The clock can be observed using a probing device, such as a logic analyzer.