I start a new project with an ATMega2560-16u, but i don't understand how I can select the good clock source for the device...
it should exist some selection boxes for internal (RC) or external (XTAL) oscillator but there are no boxes availables in online or installed Atmel-Studio ... (see joined files)
On the integrated programming tool, I can select the correct clock source I want to use, but only as values in fuses regiters, but how can I be sure
that is really stored in the production files generated ?
how can I be sure of the results and how can I modify easily these settings if I need ?